snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

web/tests/browser_history.test.cjs

@@ -0,0 +1,77 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+
+window.location.hash = "#bogus";
+
+const browser_history = zrequire("browser_history");
+const {initialize_user_settings} = zrequire("user_settings");
+
+const user_settings = {};
+initialize_user_settings({user_settings});
+
+function test(label, f) {
+    run_test(label, (helpers) => {
+        helpers.override(user_settings, "web_home_view", "recent");
+        window.location.hash = "#bogus";
+        browser_history.clear_for_testing();
+        f(helpers);
+    });
+}
+
+test("basics", () => {
+    const hash1 = "#settings/profile";
+    const hash2 = "#narrow/is/dm";
+    browser_history.go_to_location(hash1);
+    assert.equal(window.location.hash, hash1);
+
+    browser_history.update(hash2);
+    assert.equal(window.location.hash, hash2);
+    assert.equal(browser_history.old_hash(), hash1);
+
+    const was_internal_change = browser_history.save_old_hash();
+    assert.ok(was_internal_change);
+    assert.equal(browser_history.old_hash(), hash2);
+});
+
+test("update with same hash", () => {
+    const hash = "#keyboard-shortcuts";
+
+    browser_history.update(hash);
+    assert.equal(window.location.hash, hash);
+    browser_history.update(hash);
+    assert.equal(window.location.hash, hash);
+});
+
+test("error for bad hashes", () => {
+    const hash = "bogus";
+    blueslip.expect("error", "programming error: prefix hashes with #");
+    browser_history.update(hash);
+});
+
+test("update internal hash if required", () => {
+    const hash = "#test/hash";
+    browser_history.update_hash_internally_if_required(hash);
+    assert.equal(window.location.hash, hash);
+
+    // Calling again with the same hash should be a no-op.
+    // If update() were called, it would log a blueslip.info
+    // for the redundant hash, so verify no new info appeared.
+    const info_count = blueslip.get_test_logs("info").length;
+    browser_history.update_hash_internally_if_required(hash);
+    assert.equal(blueslip.get_test_logs("info").length, info_count);
+});
+
+test("web-public view hash restore", () => {
+    browser_history.update("#");
+    assert.equal(window.location.hash, "");
+    const new_hash = "#narrow/is/dm";
+    browser_history.update(new_hash);
+    assert.equal(window.location.hash, new_hash);
+    browser_history.return_to_web_public_hash();
+    assert.equal(window.location.hash, "#recent");
+});