test(scheduler): add case where startDate is the same as first iterat…

…ion (#2871)

tests/test_job_scheduler.ts

@@ -952,6 +952,70 @@ describe('Job Scheduler', function () {
     delayStub.restore();
   });
 
+  it('should repeat once a day after startDate that is equal as first iteration', async function () {
+    this.timeout(8000);
+
+    const date = new Date('2024-10-10T16:30:00.000+05:30');
+    this.clock.setSystemTime(date);
+
+    const nextTick = ONE_DAY + 10 * ONE_SECOND;
+    const delay = 5 * ONE_HOUR + 500;
+
+    let counter = 0;
+    const worker = new Worker(
+      queueName,
+      async () => {
+        this.clock.tick(nextTick);
+      },
+      {
+        autorun: false,
+        connection,
+        prefix,
+        skipStalledCheck: true,
+        skipLockRenewal: true,
+      },
+    );
+    const delayStub = sinon.stub(worker, 'delay').callsFake(async () => {
+      console.log('delay');
+    });
+
+    let prev: Job;
+    const completing = new Promise<void>((resolve, reject) => {
+      worker.on('completed', async job => {
+        if (counter === 1) {
+          expect(prev.timestamp).to.be.lt(job.timestamp);
+          expect(job.processedOn! - prev.timestamp).to.be.gte(delay);
+        } else if (prev) {
+          expect(prev.timestamp).to.be.lt(job.timestamp);
+          expect(job.processedOn! - prev.timestamp).to.be.gte(ONE_DAY);
+        }
+        prev = job;
+
+        counter++;
+        if (counter == 5) {
+          resolve();
+        }
+      });
+    });
+
+    await queue.upsertJobScheduler(
+      'repeat',
+      {
+        pattern: '30 19 * * *',
+        startDate: '2024-10-10T19:30:00.000+05:30',
+        tz: 'Asia/Calcutta',
+      },
+      { data: { foo: 'bar' } },
+    );
+    this.clock.tick(delay + ONE_DAY);
+
+    worker.run();
+
+    await completing;
+    await worker.close();
+    delayStub.restore();
+  });
+
   it('should repeat once a day for 5 days', async function () {
     this.timeout(8000);