test: mock date

src/data/thunks.test.js

@@ -8,8 +8,9 @@ jest.mock('./api');
 jest.mock('@edx/frontend-platform/analytics', () => ({
   sendTrackEvent: jest.fn(),
 }));
+const userId = 5;
 jest.mock('@edx/frontend-platform/auth', () => ({
-  getAuthenticatedUser: jest.fn().mockReturnValue({ userId: 5 }),
+  getAuthenticatedUser: jest.fn().mockReturnValue({ userId }),
 }));
 
 const mockState = {
@@ -23,17 +24,31 @@ describe('Thunks unit tests', () => {
   afterEach(() => jest.resetAllMocks());
 
   describe('addChatMessage()', () => {
+    const mockDate = new Date(2024, 1, 1);
+    beforeAll(() => {
+      jest.useFakeTimers('modern');
+      jest.setSystemTime(mockDate);
+    });
+
     it('sends track event correctly, without content', async () => {
       const courseId = 'course-v1:edx+test+23';
       const role = 'user';
       const content = 'hello!';
       await addChatMessage(role, content, courseId)(dispatch, getState);
 
-      // "edx.ui.lms.learning_assistant.message",
-      //     {"course_id": "course-v1:edx+test+23", "id": undefined, "role": "user", "timestamp": "Wed Dec 11 2024 14:42:37 GMT-0500 (Eastern Standard Time)", "user_id": 5});
+      const eventName = 'edx.ui.lms.learning_assistant.message';
+      const properties = {
+        course_id: courseId,
+        id: undefined,
+        role,
+        timestamp: mockDate.toString(),
+        user_id: userId,
+      };
       expect(sendTrackEvent).toHaveBeenCalledWith(
-
-    );
+        eventName,
+        properties,
+      );
+    });
   });
 
   describe('getLearningAssistantChatSummary()', () => {