Fix user post box indicator flaky test (#30480)

webapp/channels/src/components/advanced_text_editor/use_post_box_indicator.test.tsx

@@ -20,6 +20,12 @@ function getBaseState(): DeepPartial<GlobalState> {
                         type: 'D',
                         name: 'current_user_id__teammate_user_id',
                     },
+                    dm_near_timezone: {
+                        id: 'dm_same_timezone',
+                        teammate_id: 'teammate_near_timezone_id',
+                        type: 'D',
+                        name: 'current_user_id__teammate_near_timezone_id',
+                    },
                     bot_dm_channel_id: {
                         id: 'bot_dm_channel_id',
                         teammate_id: 'bot_user_id',
@@ -49,6 +55,18 @@ function getBaseState(): DeepPartial<GlobalState> {
                             manualTimezone: '',
                         },
                     },
+                    teammate_near_timezone_id: {
+                        id: 'teammate_near_timezone_id',
+                        username: 'teammate_near_timezone_username',
+                        nickname: 'teammate_near_timezone_nickname',
+                        first_name: 'teammate_near_timezone_first_name',
+                        last_name: 'teammate_near_timezone_last_name',
+                        timezone: {
+                            useAutomaticTimezone: 'false',
+                            automaticTimezone: '',
+                            manualTimezone: 'CET',
+                        },
+                    },
                     bot_user_id: {
                         id: 'bot_user_id',
                         username: 'bot_username',
@@ -77,6 +95,11 @@ function getBaseState(): DeepPartial<GlobalState> {
 }
 
 describe('useTimePostBoxIndicator', () => {
+    beforeAll(() => {
+        jest.useFakeTimers();
+        jest.setSystemTime(new Date('2021-01-01T18:00:00Z').getTime());
+    });
+
     it('should pass base case', () => {
         const {result: {current}} = renderHookWithContext(() => useTimePostBoxIndicator('dm_channel_id'), getBaseState());
 
@@ -90,6 +113,19 @@ describe('useTimePostBoxIndicator', () => {
         expect(current.teammateTimezone.automaticTimezone).toBe('IST');
     });
 
+    it('should not show if within working hours', () => {
+        const {result: {current}} = renderHookWithContext(() => useTimePostBoxIndicator('dm_near_timezone'), getBaseState());
+
+        expect(current.isDM).toBe(true);
+        expect(current.showDndWarning).toBe(false);
+        expect(current.isSelfDM).toBe(false);
+        expect(current.isBot).toBe(false);
+        expect(current.showRemoteUserHour).toBe(false);
+        expect(current.isScheduledPostEnabled).toBe(true);
+        expect(current.teammateTimezone.useAutomaticTimezone).toBe(false);
+        expect(current.teammateTimezone.manualTimezone).toBe('CET');
+    });
+
     it('should work for DM with bots', () => {
         const {result: {current}} = renderHookWithContext(() => useTimePostBoxIndicator('bot_dm_channel_id'), getBaseState());
 

webapp/channels/src/tests/setup_jest.ts

@@ -15,6 +15,11 @@ import './react-intl_mock';
 import './react-router-dom_mock';
 import './react-tippy_mock';
 
+module.exports = async () => {
+    // eslint-disable-next-line no-process-env
+    process.env.TZ = 'UTC';
+};
+
 configure({adapter: new (Adapter as any)()});
 
 global.window = Object.create(window);