test: fix flaky test (#940)

amplitude · Dec 27, 2024 · 3ed0dfe · 3ed0dfe
1 parent 374d8aa
commit 3ed0dfe
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/packages/analytics-browser/test/browser-client.test.ts b/packages/analytics-browser/test/browser-client.test.ts
@@ -839,13 +839,16 @@ describe('browser-client', () => {
       expect(extendedLastEventTime > eventTime1).toBeTruthy();
 
       // send another event just before session expires (again)
+      // Mock Date.now() because isNewSession() depends on it
+      const dateNowMocked = jest.spyOn(Date, 'now').mockImplementation(() => extendedLastEventTime + 15);
       await new Promise<void>((resolve) =>
         // eslint-disable-next-line @typescript-eslint/no-misused-promises
         setTimeout(async () => {
           await client.track('test 2').promise;
           resolve();
         }, 10),
       );
+      dateNowMocked.mockRestore();
 
       // assert session id is unchanged
       expect(client.config.sessionId).toBe(firstSessionId);