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

server/public/model/scheduled_post_recurrence_test.go

@@ -0,0 +1,82 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestComputeNextScheduledAt(t *testing.T) {
+	tz := "America/New_York"
+	loc, err := time.LoadLocation(tz)
+	require.NoError(t, err)
+
+	// Thursday March 26, 2026 9:00 AM local
+	base := time.Date(2026, time.March, 26, 9, 0, 0, 0, loc)
+
+	t.Run("advances one week preserving wall-clock time", func(t *testing.T) {
+		scheduledPost := &ScheduledPost{
+			ScheduledAt:    base.UnixMilli(),
+			RepeatType:     ScheduledPostRepeatTypeWeekly,
+			RepeatTimezone: tz,
+		}
+		now := base.Add(1 * time.Minute) // just after send
+
+		next, err := scheduledPost.ComputeNextScheduledAt(now.UnixMilli())
+		require.NoError(t, err)
+		nextTime := time.UnixMilli(next).In(loc)
+		require.Equal(t, time.Thursday, nextTime.Weekday())
+		require.Equal(t, 9, nextTime.Hour())
+		require.Equal(t, 0, nextTime.Minute())
+		// Next Thursday April 2
+		require.Equal(t, time.April, nextTime.Month())
+		require.Equal(t, 2, nextTime.Day())
+	})
+
+	t.Run("skips past occurrences when the post is overdue by more than a week", func(t *testing.T) {
+		scheduledPost := &ScheduledPost{
+			ScheduledAt:    base.UnixMilli(),
+			RepeatType:     ScheduledPostRepeatTypeWeekly,
+			RepeatTimezone: tz,
+		}
+		now := base.AddDate(0, 0, 16) // more than two weeks later
+
+		next, err := scheduledPost.ComputeNextScheduledAt(now.UnixMilli())
+		require.NoError(t, err)
+		nextTime := time.UnixMilli(next).In(loc)
+		require.True(t, nextTime.After(now))
+		require.Equal(t, time.Thursday, nextTime.Weekday())
+		require.Equal(t, 9, nextTime.Hour())
+	})
+
+	t.Run("returns an error for an invalid timezone", func(t *testing.T) {
+		scheduledPost := &ScheduledPost{
+			ScheduledAt:    base.UnixMilli(),
+			RepeatType:     ScheduledPostRepeatTypeWeekly,
+			RepeatTimezone: "Not/AZone",
+		}
+
+		_, err := scheduledPost.ComputeNextScheduledAt(base.UnixMilli())
+		require.Error(t, err)
+	})
+
+	t.Run("returns an error for an unsupported repeat type", func(t *testing.T) {
+		scheduledPost := &ScheduledPost{
+			ScheduledAt:    base.UnixMilli(),
+			RepeatType:     "daily",
+			RepeatTimezone: tz,
+		}
+
+		_, err := scheduledPost.ComputeNextScheduledAt(base.UnixMilli())
+		require.Error(t, err)
+	})
+}
+
+func TestScheduledPostIsRecurring(t *testing.T) {
+	require.True(t, (&ScheduledPost{RepeatType: ScheduledPostRepeatTypeWeekly}).IsRecurring())
+	require.False(t, (&ScheduledPost{}).IsRecurring())
+}