Project import generated by Copybara.
GitOrigin-RevId: d9e9e3fb4e31372ec1fb43b178994ca78fa8fe70
diff --git a/static_src/shared/cron.test.js b/static_src/shared/cron.test.js
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+++ b/static_src/shared/cron.test.js
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+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import sinon from 'sinon';
+import {assert} from 'chai';
+import {CronTask} from './cron.js';
+
+let clock;
+
+describe('cron', () => {
+ beforeEach(() => {
+ clock = sinon.useFakeTimers();
+ });
+
+ afterEach(() => {
+ clock.restore();
+ });
+
+ it('calls task periodically', () => {
+ const task = sinon.spy();
+ const cronTask = new CronTask(task, 1000);
+
+ // Make sure task is not called until the cron task has been started.
+ assert.isFalse(task.called);
+
+ cronTask.start();
+ assert.isTrue(task.calledOnce);
+
+ clock.tick(1000);
+ assert.isTrue(task.calledTwice);
+
+ clock.tick(1000);
+ assert.isTrue(task.calledThrice);
+ });
+});