snapshot of https://github.com/mattermost/mattermost.git (master, 2026-09-16; blobs > 131072B omitted)

e2e-tests/cypress/tests/support/ui/account_settings_modal.d.ts

@@ -0,0 +1,59 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiOpenProfileModal`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Open the profile settings modal
+         * @param {string} section - such as `'General'`, `'Security'`, `'Notifications'`, `'Display'`, `'Sidebar'` and `'Advanced'`
+         * @return the "#accountSettingsModal"
+         *
+         * @example
+         *   cy.uiOpenProfileModal('Profile Settings').within(() => {
+         *       // Do something here
+         *   });
+         */
+        uiOpenProfileModal(section: string): Chainable<JQuery<HTMLElement>>;
+
+        /**
+         * Close the profile settings modal given that the modal itself is opened.
+         *
+         * @example
+         *   cy.uiCloseAccountSettingsModal();
+         */
+        uiCloseAccountSettingsModal(): Chainable;
+
+        /**
+         * Navigate to profile settings and verify the user's first, last name
+         * @param {String} firstname - expected user firstname
+         * @param {String} lastname - expected user lastname
+         */
+        verifyAccountNameSettings(firstname: string, lastname: string): Chainable;
+
+        /**
+         * Navigate to account display settings and change collapsed reply threads setting
+         * @param {String} setting -  ON or OFF
+         */
+        uiChangeCRTDisplaySetting(setting: string): Chainable;
+
+        /**
+         * Navigate to account display settings and change message display setting
+         * @param {String} setting -  COMPACT or STANDARD
+         */
+        uiChangeMessageDisplaySetting(setting: string): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/account_settings_modal.js

@@ -0,0 +1,60 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+Cypress.Commands.add('uiOpenProfileModal', (section = '') => {
+    // # Open profile settings modal
+    cy.uiOpenUserMenu('Profile');
+
+    const profileSettingsModal = () => cy.findByRole('dialog', {name: 'Profile'}).should('be.visible');
+
+    if (!section) {
+        return profileSettingsModal();
+    }
+
+    // # Click on a particular section
+    cy.findByRoleExtended('tab', {name: section}).should('be.visible').click();
+
+    return profileSettingsModal();
+});
+
+Cypress.Commands.add('verifyAccountNameSettings', (firstname, lastname) => {
+    // # Go to Profile
+    cy.uiOpenProfileModal('Profile Settings');
+
+    // * Check name value
+    cy.get('#nameDesc').should('have.text', `${firstname} ${lastname}`);
+    cy.uiClose();
+});
+
+Cypress.Commands.add('uiChangeGenericDisplaySetting', (setting, option) => {
+    cy.uiOpenSettingsModal('Display');
+    cy.get(setting).scrollIntoView();
+    cy.get(setting).click();
+    cy.get('.section-max').scrollIntoView();
+
+    cy.get(option).check().should('be.checked');
+
+    cy.uiSaveAndClose();
+});
+
+/*
+ * Change the message display setting
+ * @param {String} setting - as 'STANDARD' or 'COMPACT'
+ */
+Cypress.Commands.add('uiChangeMessageDisplaySetting', (setting = 'STANDARD') => {
+    const SETTINGS = {STANDARD: '#message_displayFormatA', COMPACT: '#message_displayFormatB'};
+    cy.uiChangeGenericDisplaySetting('#message_displayTitle', SETTINGS[setting]);
+});
+
+/*
+ * Change the collapsed reply threads display setting
+ * @param {String} setting - as 'OFF' or 'ON'
+ */
+Cypress.Commands.add('uiChangeCRTDisplaySetting', (setting = 'OFF') => {
+    const SETTINGS = {
+        ON: '#collapsed_reply_threadsFormatA',
+        OFF: '#collapsed_reply_threadsFormatB',
+    };
+
+    cy.uiChangeGenericDisplaySetting('#collapsed_reply_threadsTitle', SETTINGS[setting]);
+});

e2e-tests/cypress/tests/support/ui/announcement_bar.d.ts

@@ -0,0 +1,28 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiCloseAnnouncementBar`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Close the announcement bar if shown in the UI
+         *
+         * @example
+         *   cy.uiCloseAnnouncementBar();
+         */
+        uiCloseAnnouncementBar(): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/announcement_bar.js

@@ -0,0 +1,11 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+Cypress.Commands.add('uiCloseAnnouncementBar', () => {
+    cy.document().then((doc) => {
+        const announcementBar = doc.getElementsByClassName('announcement-bar')[0];
+        if (announcementBar) {
+            cy.get('.announcement-bar__close').click();
+        }
+    });
+});

e2e-tests/cypress/tests/support/ui/boards.d.ts

@@ -0,0 +1,56 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiCreateEmptyBoard`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Create a board on a given menu item.
+         *
+         * @param {string} item - one of the template menu options, ex. 'Empty board'
+         */
+        uiCreateBoard(item: string): Chainable;
+
+        /**
+         * Create an empty board.
+         * @example
+         *   cy.uiCreateEmptyBoard();
+         */
+        uiCreateEmptyBoard(): Chainable;
+
+        /**
+         * Create a board with the given title
+         *
+         * @param {string} title - title of the new board
+         */
+        uiCreateNewBoard: (title?: string) => Chainable;
+
+        /**
+         * Create a new group with the given name
+         *
+         * @param {string} name - name of the new group
+         */
+        uiAddNewGroup: (name?: string) => Chainable;
+
+        /**
+         * Create a card with the given title
+         *
+         * @param {string} title - title of the new card
+         * @param {string} columnIndex - the column index to create the card
+         */
+        uiAddNewCard: (title?: string, columnIndex?: number) => Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/boards.js

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+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import timeouts from '../../fixtures/timeouts';
+
+Cypress.Commands.add('uiCreateBoard', (item) => {
+    cy.log(`Create new board: ${item}`);
+
+    cy.uiAddBoard('Create new board');
+    cy.contains(item).click();
+    cy.contains('Use this template').click({force: true}).wait(timeouts.ONE_SEC);
+});
+
+Cypress.Commands.add('uiCreateEmptyBoard', () => {
+    cy.log('Create new empty board');
+
+    cy.contains('Create an empty board').click({force: true}).wait(timeouts.ONE_SEC);
+});
+
+Cypress.Commands.add('uiAddBoard', (item) => {
+    cy.get('.add-board-icon').should('be.visible').click();
+    cy.get('.menu-contents').should('be.visible');
+
+    if (item) {
+        cy.findByRole('button', {name: item}).click();
+    }
+});
+
+Cypress.Commands.add('uiCreateNewBoard', (title) => {
+    cy.log('**Create new empty board**');
+    cy.uiCreateEmptyBoard();
+
+    cy.findByPlaceholderText('Untitled board').should('be.visible');
+    cy.wait(timeouts.QUARTER_SEC);
+    if (title) {
+        cy.log('**Rename board**');
+        cy.findByPlaceholderText('Untitled board').type(`${title}{enter}`);
+        cy.findByRole('textbox', {name: title}).should('exist');
+    }
+    cy.wait(timeouts.HALF_SEC);
+});
+
+Cypress.Commands.add('uiAddNewGroup', (name) => {
+    cy.log('**Add a new group**');
+    cy.findByRole('button', {name: '+ Add a group'}).click();
+    cy.findByRole('textbox', {name: 'New group'}).should('exist');
+
+    if (name) {
+        cy.log('**Rename group**');
+        cy.findByRole('textbox', {name: 'New group'}).type(`{selectall}${name}{enter}`);
+        cy.findByRole('textbox', {name}).should('exist');
+    }
+    cy.wait(timeouts.HALF_SEC);
+});
+
+Cypress.Commands.add('uiAddNewCard', (title, columnIndex) => {
+    cy.log('**Add a new card**');
+    cy.findByRole('button', {name: '+ New'}).eq(columnIndex || 0).click();
+    cy.findByRole('dialog').should('exist');
+
+    if (title) {
+        cy.log('**Change card title**');
+        cy.findByPlaceholderText('Untitled').type(title);
+    }
+});

e2e-tests/cypress/tests/support/ui/channel.d.ts

@@ -0,0 +1,77 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiCreateChannel`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Create a new channel in the current team.
+         * @param {string} options.prefix - Prefix for the name of the channel, it will be added a random string ot it.
+         * @param {boolean} options.isPrivate - is the channel private or public (default)?
+         * @param {string} options.purpose - Channel's purpose
+         * @param {string} options.header - Channel's header
+         * @param {boolean} options.isNewSidebar) - the new sidebar has a different ui flow, set this setting to true to use that. Defaults to false.
+         * @param {string} options.createBoard) - Board template to create
+         *
+         * @example
+         *   cy.uiCreateChannel({prefix: 'private-channel-', isPrivate: true, purpose: 'my private channel', header: 'my private header', isNewSidebar: false});
+         */
+        uiCreateChannel(options: Record<string, unknown>): Chainable;
+
+        /**
+         * Add users to the current channel.
+         * @param {string[]} usernameList - list of userids to add to the channel
+         *
+         * @example
+         *   cy.uiAddUsersToCurrentChannel(['user1', 'user2']);
+         */
+        uiAddUsersToCurrentChannel(usernameList: string[]);
+
+        /**
+         * Invite users to the current channel.
+         * @param {string[]} usernameList - list of userids to be invited to the channel
+         *
+         * @example
+         *   cy.uiInviteUsersToCurrentChannel(['user1', 'user2']);
+         */
+        uiInviteUsersToCurrentChannel(usernameList: string[]);
+
+        /**
+         * Archive the current channel.
+         *
+         * @example
+         *   cy.uiArchiveChannel();
+         */
+        uiArchiveChannel();
+
+        /**
+         * Unarchive the current channel.
+         *
+         * @example
+         *   cy.uiUnarchiveChannel();
+         */
+        uiUnarchiveChannel();
+
+        /**
+         * Leave the current channel.
+         * @param {boolean} isPrivate - is the channel private or public (default)?
+         *
+         * @example
+         *   cy.uiLeaveChannel(true);
+         */
+        uiLeaveChannel(isPrivate?: boolean);
+    }
+}

e2e-tests/cypress/tests/support/ui/channel.js

@@ -0,0 +1,108 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {getRandomId} from '../../utils';
+import * as TIMEOUTS from '../../fixtures/timeouts';
+
+Cypress.Commands.add('uiCreateChannel', ({
+    prefix = 'channel-',
+    isPrivate = false,
+    purpose = '',
+    name = '',
+    createBoard = '',
+}) => {
+    cy.uiBrowseOrCreateChannel('Create new channel');
+
+    cy.get('#new-channel-modal').should('be.visible');
+    if (isPrivate) {
+        cy.get('#public-private-selector-button-P').click().wait(TIMEOUTS.HALF_SEC);
+    } else {
+        cy.get('#public-private-selector-button-O').click().wait(TIMEOUTS.HALF_SEC);
+    }
+    const channelName = name || `${prefix}${getRandomId()}`;
+    cy.get('#input_new-channel-modal-name').should('be.visible').clear().type(channelName);
+    if (purpose) {
+        cy.get('#new-channel-modal-purpose').clear().type(purpose);
+    }
+
+    if (createBoard) {
+        cy.get('#add-board-to-channel').should('be.visible');
+        cy.findByTestId('add-board-to-channel-check').then((el) => {
+            if (el && !el.hasClass('checked')) {
+                el.click();
+                cy.get('.templates-selector').find('input').click({force: true});
+                cy.findByText(createBoard).scrollIntoView().should('be.visible').click({force: true});
+            }
+        });
+    }
+    cy.findByText('Create channel').click();
+    cy.get('#new-channel-modal').should('not.exist');
+    cy.get('#channelIntro').should('be.visible');
+    return cy.wrap({name: channelName});
+});
+
+Cypress.Commands.add('uiAddUsersToCurrentChannel', (usernameList) => {
+    if (usernameList.length) {
+        cy.get('#channelHeaderTitle').click();
+        cy.get('#channelMembers').click();
+        cy.uiGetButton('Add').click();
+        cy.get('#addUsersToChannelModal').should('be.visible');
+        usernameList.forEach((username) => {
+            cy.get('#selectItems input').typeWithForce(`@${username}{enter}`);
+        });
+        cy.get('#saveItems').click();
+        cy.get('#addUsersToChannelModal').should('not.exist');
+    }
+});
+
+Cypress.Commands.add('uiInviteUsersToCurrentChannel', (usernameList) => {
+    if (usernameList.length) {
+        cy.get('#channelHeaderTitle').click();
+        cy.get('#channelMembers').click();
+        cy.uiGetButton('Add').click();
+        cy.get('#addUsersToChannelModal').should('be.visible');
+        usernameList.forEach((username) => {
+            cy.get('#selectItems input').typeWithForce(`@${username}{enter}`);
+        });
+        cy.get('#saveItems').click();
+        cy.get('#addUsersToChannelModal').should('not.exist');
+    }
+});
+
+Cypress.Commands.add('uiArchiveChannel', () => {
+    cy.get('#channelHeaderTitle').click();
+    cy.get('#channelArchiveChannel').click();
+    return cy.get('#deleteChannelModalDeleteButton').click();
+});
+
+Cypress.Commands.add('uiUnarchiveChannel', () => {
+    cy.get('#channelHeaderTitle').should('be.visible').click();
+    cy.get('#channelUnarchiveChannel').should('be.visible').click();
+    return cy.get('#unarchiveChannelModalDeleteButton').should('be.visible').click();
+});
+
+Cypress.Commands.add('uiLeaveChannel', (isPrivate = false) => {
+    cy.get('#channelHeaderTitle').click();
+
+    if (isPrivate) {
+        cy.get('#channelLeaveChannel').click();
+        return cy.get('#confirmModalButton').click();
+    }
+
+    return cy.get('#channelLeaveChannel').click();
+});
+
+Cypress.Commands.add('goToDm', (username) => {
+    cy.uiAddDirectMessage().click({force: true});
+
+    // # Start typing part of a username that matches previously created users
+    cy.get('#selectItems input').typeWithForce(username);
+    cy.findByRole('dialog', {name: 'Direct Messages'}).should('be.visible').wait(TIMEOUTS.ONE_SEC);
+    cy.findByRole('combobox', {name: 'Search for people'}).
+        typeWithForce(username).
+        wait(TIMEOUTS.ONE_SEC).
+        typeWithForce('{enter}');
+
+    // # Save the selected item
+    return cy.get('#saveItems').click().wait(TIMEOUTS.HALF_SEC);
+});

e2e-tests/cypress/tests/support/ui/channel_header.d.ts

@@ -0,0 +1,86 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiGetChannelFavoriteButton`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Get channel header button.
+         *
+         * @example
+         *   cy.uiGetChannelHeaderButton().click();
+         */
+        uiGetChannelHeaderButton(): Chainable;
+
+        /**
+         * Get favorite button from channel header.
+         *
+         * @example
+         *   cy.uiGetChannelFavoriteButton().click();
+         */
+        uiGetChannelFavoriteButton(): Chainable;
+
+        /**
+         * Get mute button from channel header.
+         *
+         * @example
+         *   cy.uiGetMuteButton().click();
+         */
+        uiGetMuteButton(): Chainable;
+
+        /**
+         * Get member button from channel header.
+         *
+         * @example
+         *   cy.uiGetChannelMemberButton().click();
+         */
+        uiGetChannelMemberButton(): Chainable;
+
+        /**
+         * Get pin button from channel header.
+         *
+         * @example
+         *   cy.uiGetChannelPinButton().click();
+         */
+        uiGetChannelPinButton(): Chainable;
+
+        /**
+         * Get files button from channel header.
+         *
+         * @example
+         *   cy.uiGetChannelFileButton().click();
+         */
+        uiGetChannelFileButton(): Chainable;
+
+        /**
+          * Get channel menu
+          *
+          * @example
+          *   cy.uiGetChannelMenu();
+          */
+        uiGetChannelMenu(): Chainable;
+
+        /**
+         * Open channel menu
+         * @param {string} [menu] - such as `'View Info'`, `'Notification Preferences'`, `'Team Settings'` and other items in the main menu.
+         * @return the channel menu
+         *
+         * @example
+         *   cy.uiOpenChannelMenu();
+         */
+        uiOpenChannelMenu(menu?: string): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/channel_header.js

@@ -0,0 +1,56 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+// Buttons
+
+Cypress.Commands.add('uiGetChannelHeaderButton', () => {
+    return cy.get('#channelHeaderDropdownButton').should('be.visible');
+});
+
+Cypress.Commands.add('uiGetChannelFavoriteButton', () => {
+    return cy.get('#toggleFavorite').should('be.visible');
+});
+
+Cypress.Commands.add('uiGetMuteButton', () => {
+    return cy.get('#toggleMute').should('be.visible');
+});
+
+Cypress.Commands.add('uiGetChannelMemberButton', () => {
+    return cy.get('#member_rhs').should('be.visible');
+});
+
+Cypress.Commands.add('uiGetChannelPinButton', () => {
+    return cy.get('#channelHeaderPinButton').should('be.visible');
+});
+
+Cypress.Commands.add('uiGetChannelFileButton', () => {
+    return cy.get('#channelHeaderFilesButton').should('be.visible');
+});
+
+// Menus
+
+Cypress.Commands.add('uiGetChannelMenu', (options = {exist: true}) => {
+    if (options.exist) {
+        return cy.get('#channelHeaderDropdownMenu').
+            should('be.visible');
+    }
+
+    return cy.get('#channelHeaderDropdownMenu').should('not.exist');
+});
+
+Cypress.Commands.add('uiOpenChannelMenu', (item = '') => {
+    // # Click on channel header button
+    cy.uiGetChannelHeaderButton().click();
+
+    if (!item) {
+        // # Return the menu if no item is passed
+        return cy.uiGetChannelMenu();
+    }
+
+    // # Click on a particular item
+    return cy.uiGetChannelMenu().
+        findByText(item).
+        scrollIntoView().
+        should('be.visible').
+        click();
+});

e2e-tests/cypress/tests/support/ui/channel_sidebar.ts

@@ -0,0 +1,84 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {getRandomId} from '../../utils';
+
+import type {ChainableT} from '@/types';
+
+/**
+ * Create a new category
+ *
+ * @param [categoryName] category's name
+ *
+ * @example
+ *   cy.uiCreateSidebarCategory();
+ */
+function uiCreateSidebarCategory(categoryName: string = `category-${getRandomId()}`): ChainableT<any> {
+    // # Click on the sidebar menu dropdown and select Create Category
+    cy.uiBrowseOrCreateChannel('Create new category');
+
+    cy.findByRole('dialog', {name: 'Create New Category'}).should('be.visible').within(() => {
+        // # Fill in the category name and click 'Create'
+        cy.findByRole('textbox').should('be.visible').typeWithForce(categoryName).
+            invoke('val').should('equal', categoryName);
+        cy.findByRole('button', {name: 'Create'}).should('be.enabled').click();
+    });
+
+    // * Wait for the category to appear in the sidebar
+    cy.contains('.SidebarChannelGroup', categoryName, {matchCase: false});
+
+    return cy.wrap({displayName: categoryName});
+}
+
+Cypress.Commands.add('uiCreateSidebarCategory', uiCreateSidebarCategory);
+
+/**
+ * Move a channel to a category.
+ * Open the channel menu, select Move to, and click either New Category or on the category.
+ *
+ * @param channelName channel's name
+ * @param categoryName category's name
+ * @param [newCategory=false] create a new category to move into
+ * @param [isChannelId=false] whether channelName is a channel ID
+ *
+ * @example
+ *   cy.uiMoveChannelToCategory('Town Square', 'Favorites');
+ */
+function uiMoveChannelToCategory(channelName: string, categoryName: string, newCategory = false, isChannelId = false): ChainableT<any> {
+    // # Open the channel menu, select Move to
+    cy.uiGetChannelSidebarMenu(channelName, isChannelId).within(() => {
+        cy.findByText('Move to...').should('be.visible').trigger('mouseover');
+    });
+
+    // # Select the move to category
+    cy.findAllByRole('menu', {name: 'Move to submenu'}).should('be.visible').within(() => {
+        if (newCategory) {
+            cy.findByText('New Category').should('be.visible').click({force: true});
+        } else {
+            cy.findByText(categoryName).should('be.visible').click({force: true});
+        }
+    });
+
+    if (newCategory) {
+        cy.findByRole('dialog', {name: 'Create New Category'}).should('be.visible').within(() => {
+            // # Fill in the category name and click 'Create'
+            cy.findByRole('textbox').should('be.visible').typeWithForce(categoryName).
+                invoke('val').should('equal', categoryName);
+            cy.findByRole('button', {name: 'Create'}).should('be.enabled').click();
+        });
+    }
+
+    return cy.wrap({displayName: categoryName});
+}
+
+Cypress.Commands.add('uiMoveChannelToCategory', uiMoveChannelToCategory);
+
+declare global {
+    // eslint-disable-next-line @typescript-eslint/no-namespace
+    namespace Cypress {
+        interface Chainable {
+            uiCreateSidebarCategory: typeof uiCreateSidebarCategory;
+            uiMoveChannelToCategory: typeof uiMoveChannelToCategory;
+        }
+    }
+}

e2e-tests/cypress/tests/support/ui/cloud_billing.d.ts

@@ -0,0 +1,27 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Iframe element in Stripe
+         *
+         * @example
+         *   cy.getIframeBody();
+         */
+        uiGetPaymentCardInput(): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/cloud_billing.js

@@ -0,0 +1,9 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+Cypress.Commands.add('uiGetPaymentCardInput', () => {
+    return cy.
+        get('.__PrivateStripeElement > iframe').
+        its('0.contentDocument.body').should('not.be.empty').
+        then(cy.wrap);
+});

e2e-tests/cypress/tests/support/ui/common.d.ts

@@ -0,0 +1,114 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiSave`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Click 'Save' button
+         *
+         * @example
+         *   cy.uiSave();
+         */
+        uiSave(): Chainable;
+
+        /**
+         * Click 'Cancel' button
+         *
+         * @example
+         *   cy.uiCancel();
+         */
+        uiCancel(): Chainable;
+
+        /**
+         * Click 'Close' button
+         *
+         * @example
+         *   cy.uiClose();
+         */
+        uiClose(): Chainable;
+
+        /**
+         * Click Save then Close buttons
+         *
+         * @example
+         *   cy.uiSaveAndClose();
+         */
+        uiSaveAndClose(): Chainable;
+
+        /**
+         * Get a button by its text using "cy.findByRole"
+         *
+         * @param {String} label - Button text
+         *
+         * @example
+         *   cy.uiGetButton('Save');
+         */
+        uiGetButton(label: string): Chainable;
+
+        /**
+         * Get save button
+         *
+         * @example
+         *   cy.uiSaveButton();
+         */
+        uiSaveButton(): Chainable;
+
+        /**
+         * Get cancel button
+         *
+         * @example
+         *   cy.uiCancelButton();
+         */
+        uiCancelButton(): Chainable;
+
+        /**
+         * Get close button
+         *
+         * @example
+         *   cy.uiCloseButton();
+         */
+        uiCloseButton(): Chainable;
+
+        /**
+         * Get a radio button by its text using "cy.findByRole"
+         *
+         * @example
+         *   cy.uiGetRadioButton('Custom Theme');
+         */
+        uiGetRadioButton(): Chainable;
+
+        /**
+         * Get a heading by its text using "cy.findByRole"
+         *
+         * @param {string} headingText - Heading text
+         *
+         * @example
+         *   cy.uiGetHeading('General Settings');
+         */
+        uiGetHeading(headingText: string): Chainable;
+
+        /**
+         * Get a textbox by its text using "cy.findByRole"
+         *
+         * @param {string} text - Textbox label
+         *
+         * @example
+         *   cy.uiGetTextbox('Nickname');
+         */
+        uiGetTextbox(text: string): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/common.js

@@ -0,0 +1,55 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+Cypress.Commands.add('uiSave', () => {
+    return cy.findByRole('button', {name: 'Save'}).scrollIntoView().click();
+});
+
+Cypress.Commands.add('uiCancel', () => {
+    return cy.findByRole('button', {name: 'Cancel'}).click();
+});
+
+Cypress.Commands.add('uiClose', () => {
+    return cy.findAllByRole('button', {name: 'Close'}).eq(0).click();
+});
+
+Cypress.Commands.add('uiSaveAndClose', () => {
+    cy.uiSave();
+    cy.uiClose();
+});
+
+Cypress.Commands.add('uiGetButton', (name) => {
+    return cy.findByRole('button', {name});
+});
+
+Cypress.Commands.add('uiSaveButton', () => {
+    return cy.uiGetButton('Save');
+});
+
+Cypress.Commands.add('uiCancelButton', () => {
+    return cy.uiGetButton('Cancel');
+});
+
+Cypress.Commands.add('uiCloseButton', () => {
+    return cy.uiGetButton('Close');
+});
+
+Cypress.Commands.add('uiGetRadioButton', (name) => {
+    return cy.findByRole('radio', {name}).should('be.visible');
+});
+
+Cypress.Commands.add('uiGetHeading', (name) => {
+    return cy.findByRole('heading', {name}).should('be.visible');
+});
+
+Cypress.Commands.add('uiGetTextbox', (name) => {
+    return cy.findByRole('textbox', {name}).should('be.visible');
+});
+
+Cypress.Commands.add('uiCloseOnboardingTaskList', () => {
+    cy.get('[data-cy=onboarding-task-list-action-button]').then(($btn) => {
+        if ($btn.find('i.icon-close').length) {
+            $btn.trigger('click');
+        }
+    });
+});

e2e-tests/cypress/tests/support/ui/compliance_export.d.ts

@@ -0,0 +1,39 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Select compliance export format
+         * @param {string} exportFormat - compliance export format
+         *
+         * @example
+         *   const EXPORTFORMAT = "Actiance XML";
+         *   cy.uiEnableComplianceExport(Compliance Export Format);
+         */
+        uiEnableComplianceExport(exportFormat: string): Chainable;
+
+        /**
+         * Go to Compliance Page
+         */
+        uiGoToCompliancePage(): Chainable;
+
+        /**
+         * Click Run Export Compliance and wait for Success status
+         */
+        uiExportCompliance(): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/compliance_export.js

@@ -0,0 +1,53 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import * as TIMEOUTS from '../../fixtures/timeouts';
+
+Cypress.Commands.add('uiEnableComplianceExport', (exportFormat = 'csv') => {
+    // * Verify that the page is loaded
+    cy.findByText('Enable Compliance Export:').should('be.visible');
+    cy.findByText('Compliance Export Time:').should('be.visible');
+    cy.findByText('Export Format:').should('be.visible');
+
+    // # Enable compliance export
+    cy.findByRole('radio', {name: /false/i}).click();
+    cy.findByRole('radio', {name: /true/i}).click();
+
+    // # Change export format
+    cy.findByTestId('exportFormatdropdown').should('be.visible').select(exportFormat);
+
+    // # Save settings
+    cy.uiSaveConfig({confirm: true});
+});
+
+Cypress.Commands.add('uiGoToCompliancePage', () => {
+    cy.visit('/admin_console/compliance/export');
+    cy.get('.admin-console__header', {timeout: TIMEOUTS.TWO_MIN}).should('be.visible').invoke('text').should('include', 'Compliance Export');
+});
+
+Cypress.Commands.add('uiExportCompliance', () => {
+    // # Click the export job button
+    cy.findByRole('button', {name: /run compliance export job now/i}).click();
+
+    // # Small wait to ensure new row is add
+    cy.wait(TIMEOUTS.THREE_SEC);
+
+    // # Get the first row
+    cy.get('.job-table__table').find('tbody > tr').eq(0).as('firstRow');
+
+    // # Get the first table header
+    cy.get('.job-table__table').find('thead > tr').as('firstheader');
+
+    // # Wait until export is finished
+    cy.waitUntil(() => {
+        return cy.get('@firstRow').find('td:eq(0)').then((el) => {
+            return el[0].innerText.trim() === 'Success';
+        });
+    },
+    {
+        timeout: TIMEOUTS.FIVE_MIN,
+        interval: TIMEOUTS.ONE_SEC,
+        errorMsg: 'Compliance export did not finish in time',
+    });
+});
+

e2e-tests/cypress/tests/support/ui/data_retention.d.ts

@@ -0,0 +1,86 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Go to Data Retention page
+         */
+        uiGoToDataRetentionPage(): Chainable;
+
+        /**
+         * Click create policy button
+         */
+        uiClickCreatePolicy(): Chainable;
+
+        /**
+         * Fill out custom policy form fields
+         * @param {string} name - policy name
+         * @param {string} durationDropdown - duration dropdown value (days, years, forever)
+         * @param {string?} durationText - duration text
+         */
+        uiFillOutCustomPolicyFields(name: string, durationDropdown: string, durationText?: string): Chainable;
+
+        /**
+         * Search and add teams to custom policy
+         * @param {string[]} teamNames - array of team names
+         */
+        uiAddTeamsToCustomPolicy(teamNames: string[]): Chainable;
+
+        /**
+         * Search and add channels to custom policy
+         * @param {string[]} channelNames - array of channel names
+         */
+        uiAddChannelsToCustomPolicy(channelNames: string[]): Chainable;
+
+        /**
+         * Add teams to a custom policy
+         * @param {number} numberOfTeams - number of teams to add to the policy
+         */
+        uiAddRandomTeamToCustomPolicy(numberOfTeams?: number): Chainable;
+
+        /**
+         * Add channels to a custom policy
+         * @param {number} numberOfTeams - number of teams to add to the policy
+         */
+        uiAddRandomChannelToCustomPolicy(numberOfChannels?: number): Chainable;
+
+        /**
+         * Verify custom policy UI information
+         * @param {string} policyId - Custom Policy ID
+         * @param {string} description - The name of the policy
+         * @param {string} duration - How long messages last in the policy
+         * @param {string} appliedTo - Teams and channels the policy apples to
+         */
+        uiVerifyCustomPolicyRow(policyId: string, description: string, duration: string, appliedTo: string): Chainable;
+
+        /**
+         * Click edit custom policy
+         * @param {string} policyId - Custom Policy ID
+         */
+        uiClickEditCustomPolicyRow(policyId: string): Chainable;
+
+        /**
+         * Verify custom create policy response
+         * @param body - Response body
+         * @param {number} teamCount - Number of teams the policy applies to
+         * @param {number} channelCount - Number of channels the policy applies to
+         * @param {number} duration - How long messages last in the policy
+         * @param {string} displayName - The name of the policy
+         */
+        uiVerifyPolicyResponse(body, teamCount: number, channelCount: number, duration: number, displayName: string): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/data_retention.js

@@ -0,0 +1,105 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import * as TIMEOUTS from '../../fixtures/timeouts';
+
+Cypress.Commands.add('uiGoToDataRetentionPage', () => {
+    cy.visit('/admin_console/compliance/data_retention_settings');
+    cy.get('.DataRetentionSettings .admin-console__header', {timeout: TIMEOUTS.TWO_MIN}).should('be.visible').invoke('text').should('include', 'Data Retention Policies');
+});
+
+Cypress.Commands.add('uiClickCreatePolicy', () => {
+    cy.uiGetButton('Add policy').click();
+    cy.get('.DataRetentionSettings .admin-console__header', {timeout: TIMEOUTS.TWO_MIN}).should('be.visible').invoke('text').should('include', 'Custom Retention Policy');
+});
+
+Cypress.Commands.add('uiFillOutCustomPolicyFields', (name, durationDropdown, durationText = '') => {
+    // # Type policy name
+    cy.uiGetTextbox('Policy name').clear().type(name);
+
+    // # Add message retention values
+    cy.get('.CustomPolicy__fields #DropdownInput_message_retention').should('be.visible').click();
+    cy.get(`.message_retention__menu .message_retention__option span.option_${durationDropdown}`).should('be.visible').click();
+    if (durationText) {
+        cy.get('.CustomPolicy__fields input#message_retention_input').clear().type(durationText);
+    }
+});
+
+Cypress.Commands.add('uiAddTeamsToCustomPolicy', (teamNames) => {
+    cy.uiGetButton('Add teams').click();
+    teamNames.forEach((teamName) => {
+        cy.findByRole('combobox', {name: 'Search and add teams'}).typeWithForce(teamName);
+        cy.get('.team-info-block').then((el) => {
+            el.click();
+        });
+    });
+    cy.uiGetButton('Add').click();
+});
+
+Cypress.Commands.add('uiAddChannelsToCustomPolicy', (channelNames) => {
+    cy.uiGetButton('Add channels').click();
+    channelNames.forEach((channelName) => {
+        cy.findByRole('combobox', {name: 'Search and add channels'}).typeWithForce(channelName);
+        cy.wait(TIMEOUTS.ONE_SEC);
+        cy.get('.channel-info-block').then((el) => {
+            el.click();
+        });
+    });
+    cy.uiGetButton('Add').click();
+});
+
+Cypress.Commands.add('uiAddRandomTeamToCustomPolicy', (numberOfTeams = 1) => {
+    cy.uiGetButton('Add teams').click();
+    for (let i = 0; i < numberOfTeams; i++) {
+        cy.get('.team-info-block').first().then((el) => {
+            el.click();
+        });
+    }
+    cy.uiGetButton('Add').click();
+});
+
+Cypress.Commands.add('uiAddRandomChannelToCustomPolicy', (numberOfChannels = 1) => {
+    cy.uiGetButton('Add channels').click();
+    for (let i = 0; i < numberOfChannels; i++) {
+        cy.get('.channel-info-block').first().then((el) => {
+            el.click();
+        });
+    }
+    cy.uiGetButton('Add').click();
+});
+
+Cypress.Commands.add('uiVerifyCustomPolicyRow', (policyId, description, duration, appliedTo) => {
+    // * Assert row has correct description
+    cy.get(`#customDescription-${policyId}`).should('include.text', description);
+
+    // * Assert row has correct duration
+    cy.get(`#customDuration-${policyId}`).should('include.text', duration);
+
+    // * Assert row has correct team/channel counts
+    cy.get(`#customAppliedTo-${policyId}`).should('include.text', appliedTo);
+});
+
+Cypress.Commands.add('uiClickEditCustomPolicyRow', (policyId) => {
+    cy.get(`#customWrapper-${policyId}`).trigger('mouseover').click();
+    cy.findByRole('button', {name: /edit/i}).should('be.visible').click();
+});
+
+Cypress.Commands.add('uiVerifyPolicyResponse', (body, teamCount, channelCount, duration, displayName) => {
+    // * Assert response body exists
+    assert.isNotNull(body);
+
+    // * Assert response body contains an ID
+    assert.isNotNull(body.id);
+
+    // * Assert response body team_count matches supplied value
+    expect(body.team_count).to.equal(teamCount);
+
+    // * Assert response body channel_count matches supplied value
+    expect(body.channel_count).to.equal(channelCount);
+
+    // * Assert response body duration matches supplied value
+    expect(body.post_duration).to.equal(duration);
+
+    // * Assert response body display_name matches supplied value
+    expect(body.display_name).to.equal(displayName);
+});

e2e-tests/cypress/tests/support/ui/emoji.ts

@@ -0,0 +1,59 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import type {ChainableT} from '@/types';
+
+Cypress.Commands.add('uiGetEmojiPicker', (): ChainableT<JQuery> => {
+    return cy.get('#emojiPicker').should('be.visible');
+});
+
+Cypress.Commands.add('uiOpenEmojiPicker', (): ChainableT<JQuery> => {
+    cy.get('body').then(($body) => {
+        if ($body.find('#emojiPicker:visible').length) {
+            cy.get('body').type('{esc}');
+        }
+    });
+    cy.get('#emojiPicker').should('not.exist');
+    cy.findByRole('button', {name: 'select an emoji'}).should('be.visible').click();
+    return cy.get('#emojiPicker').should('be.visible');
+});
+
+Cypress.Commands.add('uiOpenCustomEmoji', () => {
+    cy.uiOpenEmojiPicker();
+    cy.findByText('Custom Emoji').should('be.visible').click();
+
+    cy.url().should('include', '/emoji');
+    cy.get('.backstage-header').should('be.visible').and('contain', 'Custom Emoji');
+});
+
+declare global {
+    // eslint-disable-next-line @typescript-eslint/no-namespace
+    namespace Cypress {
+        interface Chainable {
+
+            /**
+             * Open custom emoji
+             *
+             * @example
+             *   cy.uiOpenCustomEmoji();
+             */
+            uiGetEmojiPicker(): Chainable;
+
+            /**
+             * Open custom emoji
+             *
+             * @example
+             *   cy.uiOpenCustomEmoji();
+             */
+            uiOpenCustomEmoji(): Chainable;
+
+            /**
+             * Open emoji picker
+             *
+             * @example
+             *   cy.uiOpenEmojiPicker();
+             */
+            uiOpenEmojiPicker(): Chainable;
+        }
+    }
+}

e2e-tests/cypress/tests/support/ui/extend_testing_library.d.ts

@@ -0,0 +1,30 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of the Testing Library commands
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Extends `findByRole` by matching case to `name` as insensitive but sensitive to `text` value
+         * @param {string} role - button, input, textbox, etc.
+         * @param {Object} option - text value of the target element
+         *
+         * @example
+         *   cy.findByRoleExtended('button', {name: 'Advanced'}).should('be.visible').click();
+         */
+        findByRoleExtended(role: string, option: {name: string}): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/extend_testing_library.js

@@ -0,0 +1,7 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+Cypress.Commands.add('findByRoleExtended', (role, {name}) => {
+    const re = RegExp(name, 'i');
+    return cy.findByRole(role, {name: re}).should('have.text', name);
+});

e2e-tests/cypress/tests/support/ui/file_preview.d.ts

@@ -0,0 +1,124 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiOpenFilePreviewModal`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Get file thumbnail from a post
+         *
+         * @param {string} filename
+         *
+         * @example
+         *   cy.uiGetFileThumbnail('image.png');
+         */
+        uiGetFileThumbnail(filename: string): Chainable;
+
+        /**
+         * Get file upload preview located below post textbox
+         *
+         * @example
+         *   cy.uiGetFileUploadPreview();
+         */
+        uiGetFileUploadPreview(): Chainable;
+
+        /**
+         * Wait for file upload preview located below post textbox
+         *
+         * @example
+         *   cy.uiGetFileUploadPreview();
+         */
+        uiGetFileUploadPreview(): Chainable;
+
+        /**
+         * Get file preview modal
+         *
+         * @param {bool} option.exist - Set to false to not verify if the element exists. Otherwise, true (default) to check existence.
+         *
+         * @example
+         *   cy.uiGetFilePreviewModal();
+         */
+        uiGetFilePreviewModal(option: Record<string, boolean>): Chainable;
+
+        /**
+         * Get Public Link
+         *
+         * @param {bool} option.exist - Set to false to not verify if the element exists. Otherwise, true (default) to check existence.
+         *
+         * @example
+         *   cy.uiGetPublicLink();
+         */
+        uiGetPublicLink(option: Record<string, boolean>): Chainable;
+
+        /**
+         * Open file preview modal
+         *
+         * @param {string} filename
+         *
+         * @example
+         *   cy.uiOpenFilePreviewModal('image.png');
+         */
+        uiOpenFilePreviewModal(filename: string): Chainable;
+
+        /**
+         * Close file preview modal
+         *
+         * @example
+         *   cy.uiCloseFilePreviewModal();
+         */
+        uiCloseFilePreviewModal(): Chainable;
+
+        /**
+         * Get main content of file preview modal
+         *
+         * @example
+         *   cy.uiGetContentFilePreviewModal();
+         */
+        uiGetContentFilePreviewModal(): Chainable;
+
+        /**
+         * Get download link button from file preview modal
+         *
+         * @example
+         *   cy.uiGetDownloadLinkFilePreviewModal();
+         */
+        uiGetDownloadLinkFilePreviewModal(): Chainable;
+
+        /**
+         * Get download button from file preview modal
+         *
+         * @example
+         *   cy.uiGetDownloadFilePreviewModal();
+         */
+        uiGetDownloadFilePreviewModal(): Chainable;
+
+        /**
+         * Get arrow left button from file preview modal
+         *
+         * @example
+         *   cy.uiGetArrowLeftFilePreviewModal();
+         */
+        uiGetArrowLeftFilePreviewModal(): Chainable;
+
+        /**
+         * Get arrow right button from file preview modal
+         *
+         * @example
+         *   cy.uiGetArrowRightFilePreviewModal();
+         */
+        uiGetArrowRightFilePreviewModal(): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/file_preview.js

@@ -0,0 +1,80 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+Cypress.Commands.add('uiGetFileThumbnail', (filename) => {
+    // Gallery tiles preserve original filename casing on data-file-name,
+    // while the legacy thumbnail aria-label is always lowercased
+    // (see file_preview.tsx). Match each accordingly.
+    const tileMatches = Cypress.$('[data-testid="media-gallery-tile"]').filter((_, el) => {
+        return el.getAttribute('data-file-name')?.toLowerCase() === filename.toLowerCase();
+    });
+    if (tileMatches.length) {
+        return cy.wrap(tileMatches);
+    }
+    return cy.findByLabelText(`file thumbnail ${filename.toLowerCase()}`);
+});
+
+Cypress.Commands.add('uiGetFileUploadPreview', () => {
+    return cy.get('.file-preview__container');
+});
+
+Cypress.Commands.add('uiWaitForFileUploadPreview', () => {
+    cy.waitUntil(() => cy.uiGetFileUploadPreview().then((el) => {
+        return el.find('.post-image__thumbnail').length > 0;
+    }));
+});
+
+Cypress.Commands.add('uiGetFilePreviewModal', (options = {exist: true}) => {
+    if (options.exist) {
+        return cy.get('.file-preview-modal').should('be.visible');
+    }
+
+    return cy.get('.file-preview-modal').should('not.exist');
+});
+
+Cypress.Commands.add('uiGetPublicLink', (options = {exist: true}) => {
+    if (options.exist) {
+        return cy.get('.icon-link-variant').should('be.visible');
+    }
+    return cy.get('.icon-link-variant').should('not.exist');
+});
+
+Cypress.Commands.add('uiGetHeaderFilePreviewModal', () => {
+    return cy.uiGetFilePreviewModal().find('.file-preview-modal-header').should('be.visible');
+});
+
+Cypress.Commands.add('uiOpenFilePreviewModal', (filename) => {
+    if (filename) {
+        cy.uiGetFileThumbnail(filename).click();
+        return;
+    }
+    if (Cypress.$('[data-testid="media-gallery-tile"]').length) {
+        cy.get('[data-testid="media-gallery-tile"]').first().click();
+    } else {
+        cy.findByTestId('fileAttachmentList').children().first().click();
+    }
+});
+
+Cypress.Commands.add('uiCloseFilePreviewModal', () => {
+    return cy.uiGetFilePreviewModal().find('.icon-close').click();
+});
+
+Cypress.Commands.add('uiGetContentFilePreviewModal', () => {
+    return cy.uiGetFilePreviewModal().find('.file-preview-modal__content');
+});
+
+Cypress.Commands.add('uiGetDownloadLinkFilePreviewModal', () => {
+    return cy.uiGetFilePreviewModal().find('.icon-link-variant');
+});
+
+Cypress.Commands.add('uiGetDownloadFilePreviewModal', () => {
+    return cy.uiGetFilePreviewModal().find('.icon-download-outline');
+});
+
+Cypress.Commands.add('uiGetArrowLeftFilePreviewModal', () => {
+    return cy.uiGetFilePreviewModal().find('.icon-chevron-left');
+});
+
+Cypress.Commands.add('uiGetArrowRightFilePreviewModal', () => {
+    return cy.uiGetFilePreviewModal().find('.icon-chevron-right');
+});

e2e-tests/cypress/tests/support/ui/global_header.d.ts

@@ -0,0 +1,189 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiGetProductMenuButton`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Get product switch button
+         *
+         * @example
+         *   cy.uiGetProductMenuButton().click();
+         */
+        uiGetProductMenuButton(): Chainable;
+
+        /**
+         * Get product switch menu
+         *
+         * @example
+         *   cy.uiGetProductMenu().click();
+         */
+        uiGetProductMenu(): Chainable;
+
+        /**
+         * Open product switch menu
+         *
+         * @param {string} item - menu item ex. System Console, Integrations, etc.
+         *
+         * @example
+         *   cy.uiOpenProductMenu().click();
+         */
+        uiOpenProductMenu(item: string = ''): Chainable;
+
+        /**
+         * Get set status button
+         *
+         * @example
+         *   cy.uiGetSetStatusButton().click();
+         */
+        uiGetSetStatusButton(): Chainable;
+
+        /**
+         * Get profile header
+         *
+         * @example
+         *   cy.uiGetProfileHeader();
+         */
+        uiGetProfileHeader(): Chainable;
+
+        /**
+         * Get status menu container
+         *
+         * @param {bool} option.exist - Set to false to not verify if the element exists. Otherwise, true (default) to check existence.
+         * @example
+         *   cy.uiGetStatusMenuContainer({exist: false});
+         */
+        uiGetStatusMenuContainer(option?: Record<string, boolean>): Chainable;
+
+        /**
+         * Get user menu
+         *
+         * @example
+         *   cy.uiGetStatusMenu();
+         */
+        uiGetStatusMenu(): Chainable;
+
+        /**
+         * Open help menu
+         *
+         * @param {string} item - menu item ex. Ask the community, Help resources, etc.
+         *
+         * @example
+         *   cy.uiOpenHelpMenu();
+         */
+        uiOpenHelpMenu(item: string): Chainable;
+
+        /**
+         * Get help button
+         *
+         * @example
+         *   cy.uiGetHelpButton();
+         */
+        uiGetHelpButton(): Chainable;
+
+        /**
+         * Get help menu
+         *
+         * @example
+         *   cy.uiGetHelpMenu();
+         */
+        uiGetHelpMenu(): Chainable;
+
+        /**
+         * Open user menu
+         *
+         * @param {string} [item] - menu item ex. Profile, Logout, etc.
+         *
+         * @example
+         *   cy.uiOpenUserMenu();
+         */
+        uiOpenUserMenu(item?: string): Chainable;
+
+        /**
+         * Get search form container
+         *
+         * @example
+         *   cy.uiGetSearchContainer();
+         */
+        uiGetSearchContainer(): Chainable;
+
+        /**
+         * Get search box
+         *
+         * @example
+         *   cy.uiGetSearchBox();
+         */
+        uiGetSearchBox(): Chainable;
+
+        /**
+         * Get at-mention button
+         *
+         * @example
+         *   cy.uiGetRecentMentionButton();
+         */
+        uiGetRecentMentionButton(): Chainable;
+
+        /**
+         * Get saved posts button
+         *
+         * @example
+         *   cy.uiGetSavedPostButton();
+         */
+        uiGetSavedPostButton(): Chainable;
+
+        /**
+         * Get settings button
+         *
+         * @example
+         *   cy.uiGetSettingsButton();
+         */
+        uiGetSettingsButton(): Chainable;
+
+        /**
+         * Get settings modal
+         *
+         * @example
+         *   cy.uiGetSettingsModal();
+         */
+        uiGetSettingsModal(): Chainable;
+
+        /**
+         * Get channel info button
+         *
+         * @example
+         *  cy.uiGetChannelInfoButton();
+         */
+        uiGetChannelInfoButton(): Chainable;
+
+        /**
+         * Open settings modal
+         *
+         * @param {string} section - ex. Display, Sidebar, etc.
+         *
+         * @example
+         *   cy.uiOpenSettingsModal();
+         */
+        uiOpenSettingsModal(section: string): Chainable;
+
+        /**
+         * User log out via user menu
+         *
+         * @example
+         *   cy.uiLogout();
+         */
+        uiLogout(): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/global_header.js

@@ -0,0 +1,152 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+Cypress.Commands.add('uiGetProductMenuButton', () => {
+    return cy.findByRole('button', {name: 'Product switch menu'}).should('be.visible');
+});
+
+Cypress.Commands.add('uiGetProductMenu', () => {
+    return cy.get('.product-switcher-menu').should('be.visible');
+});
+
+Cypress.Commands.add('uiOpenProductMenu', (item = '') => {
+    // # Click on product switch button
+    cy.uiGetProductMenuButton().click();
+
+    if (!item) {
+        // # Return the menu if no item is passed
+        return cy.uiGetProductMenu();
+    }
+
+    // # Click on a particular item
+    return cy.uiGetProductMenu().
+        findByText(item).
+        scrollIntoView().
+        should('be.visible').
+        click();
+});
+
+Cypress.Commands.add('uiGetSetStatusButton', () => {
+    // # Get set status button
+    return cy.get('#userAccountMenuButton').should('be.visible');
+});
+
+Cypress.Commands.add('uiGetProfileHeader', () => {
+    return cy.uiGetSetStatusButton().parent();
+});
+
+Cypress.Commands.add('uiGetStatusMenuContainer', (options = {exist: true}) => {
+    if (options.exist) {
+        return cy.get('#userAccountMenu').should('exist').and('be.visible');
+    }
+
+    return cy.get('#userAccountMenu').should('not.exist');
+});
+
+Cypress.Commands.add('uiGetStatusMenu', (options = {visible: true}) => {
+    if (options.visible) {
+        return cy.get('#userAccountMenu').should('exist').and('be.visible');
+    }
+
+    return cy.get('#userAccountMenu').should('not.exist');
+});
+
+Cypress.Commands.add('uiOpenHelpMenu', (item = '') => {
+    // # Click on help status button
+    cy.uiGetHelpButton().click();
+
+    if (!item) {
+        // # Return the menu if no item is passed
+        return cy.uiGetHelpMenu();
+    }
+
+    // # Click on a particular item
+    return cy.uiGetHelpMenu().
+        findByText(item).
+        scrollIntoView().
+        should('be.visible').
+        click();
+});
+
+Cypress.Commands.add('uiGetHelpButton', () => {
+    return cy.findByRole('button', {name: 'Help'}).should('be.visible');
+});
+
+Cypress.Commands.add('uiGetHelpMenu', (options = {visible: true}) => {
+    const dropdown = () => cy.get('#helpMenuPortal').find('.dropdown-menu');
+
+    if (options.visible) {
+        return dropdown().should('be.visible');
+    }
+
+    return dropdown().should('not.be.visible');
+});
+
+Cypress.Commands.add('uiOpenUserMenu', (item = '') => {
+    // # Click on user status button
+    cy.uiGetSetStatusButton().click();
+
+    if (!item) {
+        // # Return the menu if no item is passed
+        return cy.uiGetStatusMenu();
+    }
+
+    // # Click on a particular item
+    return cy.uiGetStatusMenu().
+        findByText(item).
+        scrollIntoView().
+        should('be.visible').
+        click();
+});
+
+Cypress.Commands.add('uiGetSearchContainer', () => {
+    return cy.get('#searchFormContainer').should('be.visible');
+});
+
+Cypress.Commands.add('uiGetSearchBox', () => {
+    return cy.findByRole('searchbox').should('be.visible');
+});
+
+Cypress.Commands.add('uiGetRecentMentionButton', () => {
+    return cy.findByRole('button', {name: 'Recent mentions'}).should('be.visible');
+});
+
+Cypress.Commands.add('uiGetSavedPostButton', () => {
+    return cy.findByRole('button', {name: 'Saved messages'}).should('be.visible');
+});
+
+Cypress.Commands.add('uiGetSettingsButton', () => {
+    return cy.findByRole('button', {name: 'Settings'}).should('be.visible');
+});
+
+Cypress.Commands.add('uiGetChannelInfoButton', () => {
+    return cy.findByRole('button', {name: 'View Info'}).should('be.visible');
+});
+
+Cypress.Commands.add('uiGetSettingsModal', () => {
+    // # Get settings modal
+    return cy.findByRole('dialog', {name: 'Settings'});
+});
+
+Cypress.Commands.add('uiOpenSettingsModal', (section = '') => {
+    // # Open settings modal
+    cy.uiGetSettingsButton().click();
+
+    if (!section) {
+        return cy.uiGetSettingsModal();
+    }
+
+    // # Click on a particular section
+    cy.findByRoleExtended('tab', {name: section}).should('be.visible').click();
+
+    return cy.uiGetSettingsModal();
+});
+
+Cypress.Commands.add('uiLogout', () => {
+    // # Click logout via user menu
+    cy.uiOpenUserMenu('Log out');
+
+    cy.url().should('include', '/login');
+    cy.get('.login-body-message').should('be.visible');
+    cy.get('.login-body-card').should('be.visible');
+});

e2e-tests/cypress/tests/support/ui/index.js

@@ -0,0 +1,30 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import './account_settings_modal';
+import './announcement_bar';
+import './boards';
+import './channel';
+import './channel_header';
+import './channel_sidebar';
+import './cloud_billing';
+import './common';
+import './compliance_export';
+import './data_retention';
+import './extend_testing_library';
+import './global_header';
+import './emoji';
+import './file_preview';
+import './login';
+import './menu';
+import './mfa';
+import './modal';
+import './post';
+import './post_dropdown_menu';
+import './search';
+import './sidebar_left';
+import './sidebar_right';
+import './suggestion_list';
+import './system';
+import './team';
+import './tooltip';

e2e-tests/cypress/tests/support/ui/login.d.ts

@@ -0,0 +1,30 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiLogin`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Login vi UI at login page
+         *
+         * @param {UserProfile} user - user with username and password
+         *
+         * @example
+         *   cy.uiLogin(user);
+         */
+        uiLogin(user: UserProfile): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/login.js

@@ -0,0 +1,11 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+Cypress.Commands.add('uiLogin', (user = {}) => {
+    cy.url().should('include', '/login');
+
+    // # Type email and password, then Sign in
+    cy.get('#input_loginId').should('be.visible').type(user.email);
+    cy.get('#input_password-input').should('be.visible').type(user.password);
+    cy.get('#saveSetting').should('not.be.disabled').click();
+});

e2e-tests/cypress/tests/support/ui/menu.d.ts

@@ -0,0 +1,46 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiOpenSystemConsoleMainMenu`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Open main menu at system console
+         * @param {string} item - such as `'Switch to [Team Name]'`, `'Administrator's Guide'`, `'Troubleshooting Forum'`, `'Commercial Support'`, `'About Mattermost'` and `'Log Out'`.
+         * @return the main menu
+         *
+         * @example
+         *   cy.uiOpenSystemConsoleMainMenu();
+         */
+        uiOpenSystemConsoleMainMenu(): Chainable;
+
+        /**
+         * Close main menu at system console
+         *
+         * @example
+         *   cy.uiCloseSystemConsoleMainMenu();
+         */
+        uiCloseSystemConsoleMainMenu(): Chainable;
+
+        /**
+         * Get main menu at system console
+         *
+         * @example
+         *   cy.uiGetSystemConsoleMainMenu();
+         */
+        uiGetSystemConsoleMainMenu(): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/menu.js

@@ -0,0 +1,40 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+const SYSTEM_CONSOLE_MAIN_MENU = 'Menu Icon';
+
+function openMenu(name, item) {
+    const menu = () => cy.findByRole('button', {name}).should('be.visible');
+
+    // # Open the menu
+    menu().should('be.visible').click();
+
+    if (!item) {
+        return menu();
+    }
+
+    // # Click on a particular item
+    return cy.findByRole('menu').findByText(item).scrollIntoView().should('be.visible').click();
+}
+
+function getMenu(name) {
+    return cy.findByRole('button', {name}).should('be.visible');
+}
+
+Cypress.Commands.add('uiOpenSystemConsoleMainMenu', (item = '') => {
+    return openMenu(SYSTEM_CONSOLE_MAIN_MENU, item);
+});
+
+Cypress.Commands.add('uiCloseSystemConsoleMainMenu', () => {
+    return cy.uiGetSystemConsoleMainMenu().click();
+});
+
+Cypress.Commands.add('uiGetSystemConsoleMainMenu', () => {
+    return getMenu(SYSTEM_CONSOLE_MAIN_MENU);
+});
+
+Cypress.Commands.add('uiOpenDndStatusSubMenuAndClick30Mins', () => {
+    cy.uiOpenUserMenu().findByText('Do not disturb').should('be.visible').trigger('mouseover');
+
+    cy.findByText('30 mins').should('be.visible').click({force: true});
+});

e2e-tests/cypress/tests/support/ui/mfa.d.ts

@@ -0,0 +1,34 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiGetMFASecret`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Get MFA secret of a given user
+         * @param {string} userId - ID of user
+         *
+         * @returns {string} `secret` - MFA secret
+         *
+         * @example
+         *   const headerLabel = 'What\'s New';
+         *   cy.uiGetMFASecret('user-id').then((secret) => {
+         *       // do something with the secret
+         *   });
+         */
+        uiGetMFASecret(userId: string): Chainable<string>;
+    }
+}

e2e-tests/cypress/tests/support/ui/mfa.js

@@ -0,0 +1,32 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import authenticator from 'authenticator';
+
+import * as TIMEOUTS from '../../fixtures/timeouts';
+
+Cypress.Commands.add('uiGetMFASecret', (userId) => {
+    return cy.url().then((url) => {
+        if (url.includes('mfa/setup')) {
+            // # Complete MFA setup if we are on token setup page /mfa/setup
+            return cy.get('#mfa').wait(TIMEOUTS.HALF_SEC).find('.col-sm-12').then((p) => {
+                const secretp = p.text();
+                const secret = secretp.split(' ')[1];
+
+                const token = authenticator.generateToken(secret);
+                cy.findByPlaceholderText('MFA Code').type(token);
+                cy.findByText('Save').click();
+
+                cy.wait(TIMEOUTS.HALF_SEC);
+                cy.findByText('Okay').click();
+
+                return cy.wrap(secret);
+            });
+        }
+
+        // # If the user already has MFA enabled, reset the secret.
+        return cy.apiGenerateMfaSecret(userId).then((res) => {
+            return cy.wrap(res.code.secret);
+        });
+    });
+});

e2e-tests/cypress/tests/support/ui/modal.d.ts

@@ -0,0 +1,30 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiCloseModal`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Close modal with header label
+         * @param {string} headerLabel - the header label
+         *
+         * @example
+         *   const headerLabel = 'What\'s New';
+         *   cy.uiCloseModal(headerLabel);
+         */
+        uiCloseModal(headerLabel: string): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/modal.js

@@ -0,0 +1,9 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import * as TIMEOUTS from '../../fixtures/timeouts';
+
+Cypress.Commands.add('uiCloseModal', (headerLabel) => {
+    // # Close modal with modal label
+    cy.get('#genericModalLabel', {timeout: TIMEOUTS.HALF_MIN}).should('have.text', headerLabel).parents().find('.modal-dialog').findByLabelText('Close').click();
+});

e2e-tests/cypress/tests/support/ui/post.ts

@@ -0,0 +1,325 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import type {ChainableT} from '../../types';
+
+function uiGetPostTextBox(option = {exist: true}): ChainableT<JQuery> {
+    if (option.exist) {
+        return cy.get('#post_textbox').should('be.visible');
+    }
+
+    return cy.get('#post_textbox').should('not.exist');
+}
+Cypress.Commands.add('uiGetPostTextBox', uiGetPostTextBox);
+
+function uiGetReplyTextBox(option = {exist: true}): ChainableT<JQuery> {
+    if (option.exist) {
+        return cy.get('#reply_textbox').should('be.visible');
+    }
+
+    return cy.get('#reply_textbox').should('not.exist');
+}
+Cypress.Commands.add('uiGetReplyTextBox', uiGetReplyTextBox);
+
+function uiGetPostProfileImage(postId: string): ChainableT<JQuery> {
+    return getPost(postId).within(() => {
+        return cy.get('.post__img').should('be.visible');
+    });
+}
+Cypress.Commands.add('uiGetPostProfileImage', uiGetPostProfileImage);
+
+function uiGetPostHeader(postId: string): ChainableT<JQuery> {
+    return getPost(postId).within(() => {
+        return cy.get('.post__header').should('be.visible');
+    });
+}
+Cypress.Commands.add('uiGetPostHeader', uiGetPostHeader);
+
+function uiGetPostBody(postId: string): ChainableT<JQuery> {
+    return getPost(postId).within(() => {
+        return cy.get('.post__body').should('be.visible');
+    });
+}
+Cypress.Commands.add('uiGetPostBody', uiGetPostBody);
+
+function uiGetPostThreadFooter(postId: string): ChainableT<JQuery> {
+    return getPost(postId).find('.ThreadFooter');
+}
+Cypress.Commands.add('uiGetPostThreadFooter', uiGetPostThreadFooter);
+
+function uiGetPostEmbedContainer(postId: string): ChainableT<JQuery> {
+    return cy.uiGetPostBody(postId).
+        find('.file-preview__button').
+        should('be.visible');
+}
+Cypress.Commands.add('uiGetPostEmbedContainer', uiGetPostEmbedContainer);
+
+function getCenterPostById(postId: string): ChainableT<JQuery> {
+    // Prefer postView rows: virtualized lists may detach #post_<id> from a bare cy.get() query.
+    return cy.findAllByTestId('postView', {timeout: 20000}).
+        filter(`#post_${postId}`).
+        should('have.length.at.least', 1).
+        first().
+        scrollIntoView().
+        should('be.visible');
+}
+
+function getPost(postId: string): ChainableT<JQuery> {
+    if (postId) {
+        return getCenterPostById(postId);
+    }
+
+    return cy.getLastPost();
+}
+Cypress.Commands.add('getPost', getPost);
+
+function getPostMmBlocks(postId: string): ChainableT<JQuery> {
+    return getCenterPostById(postId).find('.mm-blocks').should('exist');
+}
+Cypress.Commands.add('getPostMmBlocks', getPostMmBlocks);
+
+function getRhsPostMmBlocks(postId: string): ChainableT<JQuery> {
+    return cy.findAllByTestId('rhsPostView', {timeout: 20000}).
+        filter(`#rhsPost_${postId}`).
+        should('have.length.at.least', 1).
+        first().
+        find('.mm-blocks').
+        should('exist');
+}
+Cypress.Commands.add('getRhsPostMmBlocks', getRhsPostMmBlocks);
+
+function editLastPostWithNewMessage(message: string) {
+    cy.uiGetPostTextBox().type('{uparrow}');
+
+    // * Edit Post Input should appear
+    cy.get('#edit_textbox').should('be.visible');
+
+    // # Update the post message and click Save
+    cy.get('#edit_textbox').clear().type(message);
+    cy.get('#create_post').findByText('Save').scrollIntoView().click();
+}
+Cypress.Commands.add('editLastPostWithNewMessage', editLastPostWithNewMessage);
+
+export function verifySavedPost(postId: string, message: string) {
+    // * Check that the center save icon has been updated correctly
+    cy.get(`#post_${postId}`).trigger('mouseover', {force: true});
+    cy.get(`#CENTER_flagIcon_${postId}`).
+        should('have.class', 'post-menu__item').
+        and('have.attr', 'aria-label', 'remove from saved');
+
+    // # Open the post-dotmenu
+    cy.clickPostDotMenu(postId, 'CENTER');
+
+    // * Check that the dotmenu item is changed accordingly
+    cy.findAllByTestId(`post-menu-${postId}`).eq(0).should('be.visible');
+    cy.findByText('Remove from Saved').scrollIntoView().should('be.visible');
+    cy.get('body').type('{esc}');
+
+    cy.get('#postListContent').within(() => {
+        // * Check that the post is highlighted
+        cy.get(`#post_${postId}`).should('have.class', 'post--pinned-or-flagged');
+
+        // * Check that the post pre-header is visible
+        cy.get('div.post-pre-header').should('be.visible');
+
+        // * Check that the post pre-header has the saved icon
+        cy.get('span.icon--post-pre-header').
+            should('be.visible').
+            within(() => {
+                cy.get('svg').should('have.attr', 'aria-label', 'Saved Icon');
+            });
+
+        // * Check that the post pre-header has the saved post link
+        cy.get('div.post-pre-header__text-container').
+            should('be.visible').
+            and('have.text', 'Saved').
+            within(() => {
+                cy.get('a').as('savedLink').should('be.visible');
+            });
+    });
+
+    // * Check that the saved posts list is not open in RHS before clicking the link in the post pre-header
+    cy.get('#searchContainer').should('not.exist');
+
+    // # Click the link
+    cy.get('@savedLink').click();
+
+    // * Check that the saved posts list is open in RHS
+    cy.get('#searchContainer').should('be.visible').within(() => {
+        cy.get('.sidebar--right__title').
+            should('be.visible').
+            and('have.text', 'Saved messages');
+
+        // * Check that the post pre-header is not shown for the saved message in RHS
+        cy.get(`#searchResult_${postId}`).within(() => {
+            cy.get(`#rhsPostMessageText_${postId}`).contains(message);
+            cy.get('div.post-pre-header').should('not.exist');
+        });
+    });
+
+    // # Close the RHS
+    cy.get('#searchResultsCloseButton').should('be.visible').click();
+}
+
+export function verifyUnsavedPost(postId: string) {
+    // * Check that the center save icon has been updated correctly
+    cy.get(`#post_${postId}`).trigger('mouseover', {force: true});
+    cy.get(`#CENTER_flagIcon_${postId}`).
+        should('have.class', 'post-menu__item').
+        and('have.attr', 'aria-label', 'save message');
+
+    // # Open the post-dotmenu
+    cy.clickPostDotMenu(postId, 'CENTER');
+
+    // * Check that the dotmenu item is changed accordingly
+    cy.findAllByTestId(`post-menu-${postId}`).eq(0).should('be.visible');
+    cy.findByText('Save Message').scrollIntoView().should('be.visible');
+    cy.get('body').type('{esc}');
+
+    cy.get('#postListContent').within(() => {
+        // * Check that the post is not highlighted
+        cy.get(`#post_${postId}`).should('not.have.class', 'post--pinned-or-flagged');
+
+        // * Check that the post pre-header is not visible
+        cy.get('div.post-pre-header').should('not.exist');
+
+        // * Check that the post pre-header does not have the saved icon
+        cy.get('span.icon--post-pre-header').
+            should('not.exist');
+
+        // * Check that the post pre-header does not have the saved post link
+        cy.get('div.post-pre-header__text-container').
+            should('not.exist');
+    });
+
+    // * Check that the saved posts list is not open in RHS before clicking the link in the post pre-header
+    cy.get('#searchContainer').should('not.exist');
+
+    // # Click the link
+    cy.uiGetSavedPostButton().click();
+
+    // * Check that the saved posts list is open in RHS
+    cy.get('#searchContainer').should('be.visible').within(() => {
+        cy.get('.sidebar--right__title').
+            should('be.visible').
+            and('have.text', 'Saved messages');
+
+        // * Check that the post pre-header is not shown for the saved message in RHS
+        cy.get('#search-items-container').within(() => {
+            cy.get(`#rhsPostMessageText_${postId}`).should('not.exist');
+        });
+    });
+
+    // # Close the RHS
+    cy.get('#searchResultsCloseButton').should('be.visible').click();
+}
+
+declare global {
+    // eslint-disable-next-line @typescript-eslint/no-namespace
+    namespace Cypress {
+        interface Chainable {
+
+            /**
+             * Edit last post with a new message
+             *
+             * @param {string} - message
+             *
+             * @example
+             *   cy.editLastPostWithNewMessage('new message');
+             */
+            editLastPostWithNewMessage: typeof editLastPostWithNewMessage;
+
+            /**
+             * Get post profile image of a given post ID or the last post if post ID is not given
+             *
+             * @param {string} - postId (optional)
+             *
+             * @example
+             *   cy.uiGetPostProfileImage();
+             */
+            uiGetPostProfileImage: typeof uiGetPostProfileImage;
+
+            /**
+             * Get post header of a given post ID or the last post if post ID is not given
+             *
+             * @param {string} - postId (optional)
+             *
+             * @example
+             *   cy.uiGetPostHeader();
+             */
+            uiGetPostHeader: typeof uiGetPostHeader;
+
+            /**
+             * Get post body of a given post ID or the last post if post ID is not given
+             *
+             * @param {string} - postId (optional)
+             *
+             * @example
+             *   cy.uiGetPostBody();
+             */
+            uiGetPostBody: typeof uiGetPostBody;
+
+            /**
+             * Get post thread footer of a given post ID or the last post if post ID is not given
+             *
+             * @param {string} - postId (optional)
+             *
+             * @example
+             *   cy.uiGetPostThreadFooter();
+             */
+            uiGetPostThreadFooter: typeof uiGetPostThreadFooter;
+
+            /**
+             * Get post embed container of a given post ID or the last post if post ID is not given
+             *
+             * @param {string} - postId (optional)
+             *
+             * @example
+             *   cy.uiGetPostEmbedContainer();
+             */
+            uiGetPostEmbedContainer: typeof uiGetPostEmbedContainer;
+
+            /**
+             * Get post textbox
+             *
+             * @param {bool} option.exist - Set to false to check whether element should not exist. Otherwise, true (default) to check visibility.
+             *
+             * @example
+             *   cy.uiGetPostTextBox();
+             */
+            uiGetPostTextBox: typeof uiGetPostTextBox;
+
+            /**
+             * Get reply textbox
+             *
+             * @param {bool} option.exist - Set to false to check whether element should not exist. Otherwise, true (default) to check visibility.
+             *
+             * @example
+             *   cy.uiGetReplyTextBox();
+             */
+            uiGetReplyTextBox: typeof uiGetReplyTextBox;
+
+            getPost: typeof getPost;
+
+            /**
+             * Get mm_blocks root within a center-channel post.
+             *
+             * @param {string} postId
+             *
+             * @example
+             *   cy.getPostMmBlocks(postId).within(() => { ... });
+             */
+            getPostMmBlocks: typeof getPostMmBlocks;
+
+            /**
+             * Get mm_blocks root within an RHS/thread post row.
+             *
+             * @param {string} postId
+             *
+             * @example
+             *   cy.getRhsPostMmBlocks(postId).within(() => { ... });
+             */
+            getRhsPostMmBlocks: typeof getRhsPostMmBlocks;
+        }
+    }
+}

e2e-tests/cypress/tests/support/ui/post_dropdown_menu.d.ts

@@ -0,0 +1,39 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiClickCopyLink`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Click on "Copy Link" of post dropdown menu and verifies if the link is copied into the clipboard
+         * Created user has an option to log in after all are setup.
+         * @param {string} permalink - permalink to verify if copied into the clipboard
+         *
+         * @example
+         *   const permalink = 'http://localhost:8065/team-name/pl/post-id';
+         *   cy.uiClickCopyLink(permalink);
+         */
+        uiClickCopyLink(permalink: string, postId: string): Chainable;
+
+        /**
+         * Click dropdown menu of a post by post ID.
+         * @param {String} postId - post ID
+         * @param {String} menuItem - e.g. "Pin to channel"
+         * @param {String} location - 'CENTER' (default), 'SEARCH', RHS_ROOT, RHS_COMMENT
+         */
+        uiClickPostDropdownMenu(postId: string, menuItem: string, location?: string): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/post_dropdown_menu.js

@@ -0,0 +1,32 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {stubClipboard} from '../../utils';
+
+Cypress.Commands.add('uiClickCopyLink', (permalink, postId) => {
+    stubClipboard().as('clipboard');
+
+    // * Verify initial state
+    cy.get('@clipboard').its('contents').should('eq', '');
+
+    // # Click on "Copy Link"
+    cy.get(`#CENTER_dropdown_${postId}`).should('be.visible').within(() => {
+        cy.findByText('Copy Link').scrollIntoView().should('be.visible').click();
+
+        // * Verify if it's called with correct link value
+        cy.get('@clipboard').its('wasCalled').should('eq', true);
+        cy.get('@clipboard').its('contents').should('eq', permalink);
+    });
+});
+
+Cypress.Commands.add('uiClickPostDropdownMenu', (postId, menuItem, location = 'CENTER') => {
+    cy.clickPostDotMenu(postId, location);
+    cy.findAllByTestId(`unread_post_${postId}`).eq(0).should('be.visible');
+    cy.findByText(menuItem).scrollIntoView().should('be.visible').click({force: true});
+});
+
+Cypress.Commands.add('uiPostDropdownMenuShortcut', (postId, menuText, shortcutKey, location = 'CENTER') => {
+    cy.clickPostDotMenu(postId, location);
+    cy.findByText(menuText).scrollIntoView().should('be.visible');
+    cy.get('body').type(shortcutKey);
+});

e2e-tests/cypress/tests/support/ui/search.ts

@@ -0,0 +1,39 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import type {ChainableT} from '@/types';
+
+function uiSearchPosts(searchTerm: string) {
+    // # Enter the search terms and hit enter to start the search
+    cy.get('#searchFormContainer').should('be.visible').click();
+    cy.get('#searchBox').find('input').clear().type(searchTerm).type('{enter}');
+
+    // * Wait for the RHS to open and the search results to appear
+    cy.contains('.sidebar--right__header', 'Search Results').should('be.visible');
+    cy.get('#searchContainer .LoadingSpinner').should('not.exist');
+}
+
+Cypress.Commands.add('uiSearchPosts', uiSearchPosts);
+
+function uiJumpToSearchResult(postId: string) {
+    // # Find the post in the search results and click Jump
+    cy.get(`#searchResult_${postId}`).contains('a', 'Jump').click();
+
+    // * Verify the URL changes to the permalink URL
+    cy.url().should((url) => url.endsWith(`/${postId}`));
+
+    // * Verify that the permalinked post is highlighted in the center channel
+    cy.get(`#post_${postId}.post--highlight`).should('be.visible');
+}
+
+Cypress.Commands.add('uiJumpToSearchResult', uiJumpToSearchResult);
+
+declare global {
+    // eslint-disable-next-line @typescript-eslint/no-namespace
+    namespace Cypress {
+        interface Chainable {
+            uiSearchPosts(searchTerm: string): ChainableT<void>;
+            uiJumpToSearchResult(postId: string): ChainableT<void>;
+        }
+    }
+}

e2e-tests/cypress/tests/support/ui/sidebar_left.ts

@@ -0,0 +1,273 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import type {ChainableT} from '../../types';
+
+Cypress.Commands.add('uiGetLHS', () => {
+    return cy.get('#SidebarContainer').should('be.visible');
+});
+
+Cypress.Commands.add('uiGetLHSHeader', () => {
+    return cy.uiGetLHS().
+        find('#sidebarTeamMenuButton').
+        should('be.visible');
+});
+
+Cypress.Commands.add('uiOpenTeamMenu', (item = '') => {
+    // # Click on LHS header
+    cy.uiGetLHSHeader().click();
+
+    if (!item) {
+        // # Return the menu if no item is passed
+        return cy.uiGetLHSTeamMenu();
+    }
+
+    // # Click on a particular item
+    return cy.uiGetLHSTeamMenu().
+        findByText(item).
+        scrollIntoView().
+        should('be.visible').
+        click();
+});
+
+Cypress.Commands.add('uiGetLHSAddChannelButton', () => {
+    return cy.uiGetLHS().findByRole('button', {name: 'Browse or create channels'});
+});
+
+Cypress.Commands.add('uiGetLHSTeamMenu', () => {
+    return cy.get('#sidebarTeamMenu');
+});
+
+function uiOpenSystemConsoleMenu(item = ''): ChainableT<JQuery> {
+    // # Click on LHS header button
+    cy.uiGetSystemConsoleButton().click();
+
+    if (!item) {
+        // # Return the menu if no item is passed
+        return cy.uiGetSystemConsoleMenu();
+    }
+
+    // # Click on a particular item
+    return cy.uiGetSystemConsoleMenu().
+        findByText(item).
+        scrollIntoView().
+        should('be.visible').
+        click();
+}
+
+Cypress.Commands.add('uiOpenSystemConsoleMenu', uiOpenSystemConsoleMenu);
+
+function uiGetSystemConsoleButton(): ChainableT<JQuery> {
+    return cy.get('.admin-sidebar').
+        findByRole('button', {name: 'Menu Icon'});
+}
+
+Cypress.Commands.add('uiGetSystemConsoleButton', uiGetSystemConsoleButton);
+
+function uiGetSystemConsoleMenu(): ChainableT<JQuery> {
+    return cy.get('.admin-sidebar').
+        find('.dropdown-menu').
+        should('be.visible');
+}
+
+Cypress.Commands.add('uiGetSystemConsoleMenu', uiGetSystemConsoleMenu);
+
+Cypress.Commands.add('uiGetLhsSection', (section) => {
+    if (section === 'UNREADS') {
+        return cy.findByText(section).
+            parent().
+            parent().
+            parent();
+    }
+
+    return cy.findAllByRole('button', {name: section}).
+        first().
+        parent().
+        parent().
+        parent();
+});
+
+Cypress.Commands.add('uiBrowseOrCreateChannel', (menuitem) => {
+    cy.uiGetLHSAddChannelButton().should('be.visible').click();
+
+    cy.get('#browserOrAddChannelMenu').
+        should('exist').and('be.visible').
+        within(() => {
+            if (menuitem) {
+                cy.findByText(menuitem).should('exist').click();
+            }
+        });
+});
+
+Cypress.Commands.add('uiAddDirectMessage', () => {
+    return cy.findByRole('button', {name: 'Write a direct message'});
+});
+
+Cypress.Commands.add('uiGetFindChannels', () => {
+    return cy.get('#lhsNavigator').findByRole('button', {name: 'Find Channels'});
+});
+
+Cypress.Commands.add('uiOpenFindChannels', () => {
+    cy.uiGetFindChannels().click();
+});
+
+function uiGetSidebarThreadsButton(): ChainableT<JQuery> {
+    return cy.get('#sidebar-threads-button').should('be.visible');
+}
+Cypress.Commands.add('uiGetSidebarThreadsButton', uiGetSidebarThreadsButton);
+
+Cypress.Commands.add('uiGetChannelSidebarMenu', (channelName, isChannelId = false) => {
+    cy.uiGetLHS().within(() => {
+        if (isChannelId) {
+            cy.get(`#sidebarItem_${channelName}`).should('be.visible').find('button').should('exist').click({force: true});
+        } else {
+            cy.findByText(channelName).should('be.visible').parents('a').find('button').should('exist').click({force: true});
+        }
+    });
+
+    return cy.findByRole('menu', {name: 'Edit channel menu'}).should('be.visible');
+});
+
+Cypress.Commands.add('uiClickSidebarItem', (name) => {
+    cy.uiGetSidebarItem(name).click({force: true});
+
+    if (name === 'threads') {
+        cy.get('body').then((body) => {
+            if (body.find('#genericModalLabel').length > 0) {
+                cy.uiCloseModal('A new way to view and follow threads');
+            }
+        });
+        cy.get('#tutorial-threads-mobile-header span.Button_label').contains('Followed threads');
+    } else {
+        cy.findAllByTestId('postView').last().scrollIntoView().should('be.visible');
+    }
+});
+
+Cypress.Commands.add('uiGetSidebarItem', (channelName) => {
+    return cy.get(`#sidebarItem_${channelName}`);
+});
+
+declare global {
+    // eslint-disable-next-line @typescript-eslint/no-namespace
+    namespace Cypress {
+        interface Chainable {
+
+            /**
+             * Get LHS
+             *
+             * @example
+             *   cy.uiGetLHS();
+             */
+            uiGetLHS(): Chainable;
+
+            /**
+             * Get LHS header
+             *
+             * @example
+             *   cy.uiGetLHSHeader().click();
+             */
+            uiGetLHSHeader(): Chainable;
+
+            /**
+             * Open team menu
+             *
+             * @param {string} item - ex. 'Invite People', 'Team Settings', etc.
+             *
+             * @example
+             *   cy.uiOpenTeamMenu();
+             */
+            uiOpenTeamMenu(item?: string): Chainable;
+
+            /**
+             * Get LHS add channel button
+             *
+             * @example
+             *   cy.uiGetLHSAddChannelButton().click();
+             */
+            uiGetLHSAddChannelButton(): Chainable;
+
+            /**
+             * Get LHS team menu
+             *
+             * @example
+             *   cy.uiGetLHSTeamMenu().should('not.exist);
+             */
+            uiGetLHSTeamMenu(): Chainable;
+
+            /**
+             * Get LHS section
+             * @param {string} section - section such as UNREADS, CHANNELS, FAVORITES, DIRECT MESSAGES and other custom category
+             *
+             * @example
+             *   cy.uiGetLhsSection('CHANNELS');
+             */
+            uiGetLhsSection(section: string): Chainable;
+
+            /**
+             * Open menu to browse or create channel
+             * @param {string} item - dropdown menu. If set, it will do click action.
+             *
+             * @example
+             *   cy.uiBrowseOrCreateChannel('Browse channels');
+             */
+            uiBrowseOrCreateChannel(item: string): Chainable;
+
+            /**
+             * Get "+" button to write a direct message
+             * @example
+             *   cy.uiAddDirectMessage();
+             */
+            uiAddDirectMessage(): Chainable;
+
+            /**
+             * Get find channels button
+             * @example
+             *   cy.uiGetFindChannels();
+             */
+            uiGetFindChannels(): Chainable;
+
+            /**
+             * Open find channels
+             * @example
+             *   cy.uiOpenFindChannels();
+             */
+            uiOpenFindChannels(): Chainable;
+
+            /**
+             * Open menu of a channel in the sidebar
+             * @param {string} channelName - name of channel, ex. 'town-square'
+             * @param {boolean} isChannelId - default false. If true, it will use channel id instead of channel name
+             * @example
+             *   cy.uiGetChannelSidebarMenu('Town Square');
+             *   cy.uiGetChannelSidebarMenu('user1212__user333', true);
+             */
+            uiGetChannelSidebarMenu(channelName: string, isChannelId?: boolean): Chainable;
+
+            /**
+             * Click sidebar item by channel or thread name
+             * @param {string} name - channel name for channels, and threads for Global Threads
+             *
+             * @example
+             *   cy.uiClickSidebarItem('town-square');
+             */
+            uiClickSidebarItem(name: string): Chainable;
+
+            /**
+             * Get sidebar item by channel or thread name
+             * @param {string} name - channel name for channels, and threads for Global Threads
+             *
+             * @example
+             *   cy.uiGetSidebarItem('town-square').find('.badge').should('be.visible');
+             */
+            uiGetSidebarItem(name: string): Chainable;
+
+            uiOpenSystemConsoleMenu: typeof uiOpenSystemConsoleMenu;
+
+            uiGetSystemConsoleButton: typeof uiGetSystemConsoleButton;
+
+            uiGetSystemConsoleMenu: typeof uiGetSystemConsoleMenu;
+
+            uiGetSidebarThreadsButton: typeof uiGetSidebarThreadsButton;
+        }
+    }
+}

e2e-tests/cypress/tests/support/ui/sidebar_right.d.ts

@@ -0,0 +1,108 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiGetRHS`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Get RHS container
+         *
+         *  @param {bool} option.visible - Set to false to check whether RHS is not visible. Otherwise, true (default) to check visibility.
+         *
+         * @example
+         *   cy.uiGetRHS();
+         */
+        uiGetRHS(option?: Record<string, boolean>): Chainable;
+
+        /**
+         * Close RHS
+         *
+         * @example
+         *   cy.uiCloseRHS();
+         */
+        uiCloseRHS(): Chainable;
+
+        /**
+         * Expand RHS
+         *
+         * @example
+         *   cy.uiExpandRHS();
+         */
+        uiExpandRHS(): Chainable;
+
+        /**
+         * Verify if RHS is expanded
+         *
+         * @example
+         *   cy.uiGetRHS().isExpanded();
+         */
+        isExpanded(): Chainable;
+
+        /**
+         * Get "Reply" button
+         *
+         * @example
+         *   cy.uiGetReply();
+         */
+        uiGetReply(): Chainable;
+
+        /**
+         * Reply by clicking "Reply" button
+         *
+         * @example
+         *   cy.uiReply();
+         */
+        uiReply(): Chainable;
+
+        /**
+         * Get RHS container
+         *
+         *  @param {bool} option.visible - Set to false to check whether Search container at RHS is not visible. Otherwise, true (default) to check visibility.
+         *
+         * @example
+         *   cy.uiGetRHSSearchContainer();
+         */
+        uiGetRHSSearchContainer(option: Record<string, boolean>): Chainable;
+
+        /**
+         * Get file filter button from RHS.
+         *
+         * @example
+         *   cy.uiGetFileFilterButton().click();
+         */
+        uiGetFileFilterButton(): Chainable;
+
+        /**
+         * Get file filter menu from RHS
+         *
+         * @param {bool} option.exist - Set to false to check whether file filter menu should not exist at RHS. Otherwise, true (default) to check visibility.
+         *
+         * @example
+         *   cy.uiGetFileFilterMenu();
+         */
+        uiGetFileFilterMenu(): Chainable;
+
+        /**
+         * Open file filter menu from RHS
+         * @param {string} item - such as `'Documents'`, `'Spreadsheets'`, `'Presentations'`, `'Code'`, `'Images'`, `'Audio'` and `'Videos'`.
+         * @return the file filter menu
+         *
+         * @example
+         *   cy.uiOpenFileFilterMenu();
+         */
+        uiOpenFileFilterMenu(): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/sidebar_right.js

@@ -0,0 +1,79 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+Cypress.Commands.add('uiGetRHS', (options = {visible: true}) => {
+    if (options.visible) {
+        return cy.get('#sidebar-right').should('be.visible');
+    }
+
+    return cy.get('#sidebar-right').should('not.be.exist');
+});
+
+Cypress.Commands.add('uiCloseRHS', () => {
+    cy.document().then((doc) => {
+        const closeButton = doc.querySelector('[aria-label="Close Sidebar Icon"]');
+        if (closeButton) {
+            closeButton.click();
+        }
+    });
+});
+
+Cypress.Commands.add('uiExpandRHS', () => {
+    cy.findByLabelText('Expand Sidebar Icon').click();
+});
+
+Cypress.Commands.add('isExpanded', {prevSubject: true}, (subject) => {
+    return cy.get(subject).should('have.class', 'sidebar--right--expanded');
+});
+
+Cypress.Commands.add('uiGetReply', () => {
+    return cy.get('#sidebar-right').findByTestId('SendMessageButton');
+});
+
+Cypress.Commands.add('uiReply', () => {
+    cy.uiGetReply().click();
+});
+
+// Sidebar search container
+
+Cypress.Commands.add('uiGetRHSSearchContainer', (options = {visible: true}) => {
+    if (options.visible) {
+        return cy.get('#searchContainer').should('be.visible');
+    }
+
+    return cy.get('#searchContainer').should('not.exist');
+});
+
+// Sidebar files search
+
+Cypress.Commands.add('uiGetFileFilterButton', () => {
+    return cy.get('.FilesFilterMenu').should('be.visible');
+});
+
+Cypress.Commands.add('uiGetFileFilterMenu', (option = {exist: true}) => {
+    if (option.exist) {
+        return cy.get('.FilesFilterMenu').
+            find('.dropdown-menu').
+            should('be.visible');
+    }
+
+    return cy.get('.FilesFilterMenu').
+        find('.dropdown-menu').
+        should('not.exist');
+});
+
+Cypress.Commands.add('uiOpenFileFilterMenu', (item = '') => {
+    // # Click on file filter button
+    cy.uiGetFileFilterButton().click();
+
+    if (!item) {
+        // # Return the menu if no item is passed
+        return cy.uiGetFileFilterMenu();
+    }
+
+    // # Click on a particular item
+    return cy.uiGetFileFilterMenu().
+        findByText(item).
+        should('be.visible').
+        click();
+});

e2e-tests/cypress/tests/support/ui/suggestion_list.ts

@@ -0,0 +1,69 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import type {SimpleUser} from '@/integration/channels/autocomplete/helpers';
+import type {ChainableT} from '@/types';
+
+/**
+ * Verify user's at-mention in the suggestion list
+ * @param {SimpleUser} user - user object
+ * @param {boolean} isSelected - check if user is selected with false as default
+ * @param {string} sectionDividerName - name of the section in suggestion list, ex. "Channel Members"
+ *
+ * @example
+ *   cy.uiVerifyAtMentionInSuggestionList(user, true, 'Channel Members');
+ */
+function uiVerifyAtMentionInSuggestionList(user: SimpleUser, isSelected = false, sectionDividerName: string | null = null): ChainableT {
+    // * Verify that the suggestion list is open and visible
+    return cy.get('#suggestionList').should('be.visible').within(() => {
+        if (sectionDividerName) {
+            // * Verify the section name is as expected
+            cy.get('.suggestion-list__divider').findByText(sectionDividerName).should('be.visible');
+            cy.get('.suggestion-list__divider').next().findByTestId(`mentionSuggestion_${user.username}`).should('be.visible');
+        }
+
+        // * Verify that the user is selected
+        return cy.uiVerifyAtMentionSuggestion(user, isSelected);
+    });
+}
+Cypress.Commands.add('uiVerifyAtMentionInSuggestionList', uiVerifyAtMentionInSuggestionList);
+
+/**
+ * Verify user's at-mention suggestion
+ * @param {SimpleUser} user - user object
+ * @param {boolean} isSelected - check if user is selected with false as default
+ *
+ * @example
+ *   cy.uiVerifyAtMentionSuggestion(user, true);
+ */
+function uiVerifyAtMentionSuggestion(user: SimpleUser, isSelected = false): ChainableT {
+    const {
+        username,
+        first_name: firstName,
+        last_name: lastName,
+        nickname,
+    } = user;
+
+    // * Verify that the user is selected
+    cy.findByTestId(`mentionSuggestion_${username}`).as('selectedMentionSuggestion').should('be.visible');
+    if (isSelected) {
+        cy.get('@selectedMentionSuggestion').should('have.class', 'suggestion--selected');
+    }
+
+    cy.get('@selectedMentionSuggestion').findByText(`@${username}`).should('be.visible');
+    cy.get('@selectedMentionSuggestion').findByText(`${firstName} ${lastName} (${nickname})`).should('be.visible');
+
+    return cy.findByTestId(`mentionSuggestion_${username}`);
+}
+
+Cypress.Commands.add('uiVerifyAtMentionSuggestion', uiVerifyAtMentionSuggestion);
+
+declare global {
+    // eslint-disable-next-line @typescript-eslint/no-namespace
+    namespace Cypress {
+        interface Chainable {
+            uiVerifyAtMentionInSuggestionList: typeof uiVerifyAtMentionInSuggestionList;
+            uiVerifyAtMentionSuggestion: typeof uiVerifyAtMentionSuggestion;
+        }
+    }
+}

e2e-tests/cypress/tests/support/ui/system.d.ts

@@ -0,0 +1,44 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiCheckLicenseExists`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Verify license exists via admin console.
+         *
+         * @example
+         *   cy.uiCheckLicenseExists();
+         */
+        uiCheckLicenseExists(): Chainable;
+
+        /**
+         * Reset system scheme permissions via System Console
+         *
+         * @example
+         *   cy.uiResetPermissionsToDefault();
+         */
+        uiResetPermissionsToDefault(): Chainable;
+
+        /**
+         * Save settings located in System Console
+         *
+         * @example
+         *   cy.uiSaveConfig();
+         */
+        uiSaveConfig(): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/system.js

@@ -0,0 +1,40 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import * as TIMEOUTS from '../../fixtures/timeouts';
+
+Cypress.Commands.add('uiCheckLicenseExists', () => {
+    // # Go to system admin then verify admin console URL, header, and content
+    cy.visit('/admin_console/about/license');
+    cy.url().should('include', '/admin_console/about/license');
+    cy.get('.admin-console', {timeout: TIMEOUTS.HALF_MIN}).should('be.visible').within(() => {
+        cy.get('.admin-console__header').should('be.visible').and('have.text', 'Edition and License');
+        cy.get('.admin-console__content').should('be.visible').and('not.contain', 'undefined').and('not.contain', 'Invalid');
+        cy.get('#remove-button').should('be.visible');
+    });
+});
+
+Cypress.Commands.add('uiResetPermissionsToDefault', () => {
+    // # Navigate to system scheme page
+    cy.visit('/admin_console/user_management/permissions/system_scheme');
+
+    // # Click reset to defaults and confirm
+    cy.findByTestId('resetPermissionsToDefault', {timeout: TIMEOUTS.HALF_MIN}).click();
+    cy.get('#confirmModalButton').click();
+    cy.uiSaveConfig();
+});
+
+Cypress.Commands.add('uiSaveConfig', ({confirm = true} = {}) => {
+    // # Save settings
+    cy.get('#saveSetting').should('be.enabled').click();
+    cy.wait(TIMEOUTS.HALF_SEC);
+
+    if (confirm) {
+        // # Wait until the UI shows the saving is done and revert the text to "Save"
+        cy.waitUntil(() => cy.get('#saveSetting').then((el) => {
+            return el[0].innerText === 'Save';
+        }));
+    } else {
+        cy.wait(TIMEOUTS.HALF_SEC);
+    }
+});

e2e-tests/cypress/tests/support/ui/team.ts

@@ -0,0 +1,42 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/**
+ * Invites a member to the current team
+ * @param {string} username - the username
+ */
+function uiInviteMemberToCurrentTeam(username: string) {
+    // # Open member invite screen
+    cy.uiOpenTeamMenu('Invite people');
+
+    // # Open members section if licensed for guest accounts
+    cy.findByTestId('invitationModal').
+        then((container) => container.find('[data-testid="inviteMembersLink"]')).
+        then((link) => link?.click());
+
+    // # Enter bot username and submit
+    cy.get('.users-emails-input__control input').typeWithForce(username).as('input');
+    cy.get('.users-emails-input__option ').contains(`@${username}`);
+    cy.get('@input').typeWithForce('{enter}');
+    cy.findByTestId('inviteButton').click();
+
+    // * Verify user invited to team
+    cy.get('.invitation-modal-confirm--sent .InviteResultRow').
+        should('contain.text', `@${username}`).
+        and('contain.text', 'This member has been added to the team.');
+
+    // # Close, return
+    cy.findByTestId('confirm-done').click();
+}
+Cypress.Commands.add('uiInviteMemberToCurrentTeam', uiInviteMemberToCurrentTeam);
+
+declare global {
+    // eslint-disable-next-line @typescript-eslint/no-namespace
+    namespace Cypress {
+        interface Chainable {
+            uiInviteMemberToCurrentTeam: typeof uiInviteMemberToCurrentTeam;
+        }
+    }
+}
+
+export {};

e2e-tests/cypress/tests/support/ui/tooltip.d.ts

@@ -0,0 +1,30 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+// ***************************************************************
+// Each command should be properly documented using JSDoc.
+// See https://jsdoc.app/index.html for reference.
+// Basic requirements for documentation are the following:
+// - Meaningful description
+// - Each parameter with `@params`
+// - Return value with `@returns`
+// - Example usage with `@example`
+// Custom command should follow naming convention of having `ui` prefix, e.g. `uiGetToolTip`.
+// ***************************************************************
+
+declare namespace Cypress {
+    interface Chainable {
+
+        /**
+         * Get tooltip
+         *
+         * @param {string} text of the tooltip
+         *
+         * @example
+         *   cy.uiGetToolTip('text');
+         */
+        uiGetToolTip(text: string): Chainable;
+    }
+}

e2e-tests/cypress/tests/support/ui/tooltip.js

@@ -0,0 +1,6 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+Cypress.Commands.add('uiGetToolTip', (text) => {
+    cy.findByRole('tooltip').should('exist').and('contain', text);
+});