Project import generated by Copybara.
GitOrigin-RevId: d9e9e3fb4e31372ec1fb43b178994ca78fa8fe70
diff --git a/static_src/elements/chops/chops-collapse/chops-collapse.test.js b/static_src/elements/chops/chops-collapse/chops-collapse.test.js
new file mode 100644
index 0000000..7058b65
--- /dev/null
+++ b/static_src/elements/chops/chops-collapse/chops-collapse.test.js
@@ -0,0 +1,33 @@
+// 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 {assert} from 'chai';
+import {ChopsCollapse} from './chops-collapse.js';
+
+
+let element;
+describe('chops-collapse', () => {
+ beforeEach(() => {
+ element = document.createElement('chops-collapse');
+ document.body.appendChild(element);
+ });
+
+ afterEach(() => {
+ document.body.removeChild(element);
+ });
+
+ it('initializes', () => {
+ assert.instanceOf(element, ChopsCollapse);
+ });
+
+ it('toggling chops-collapse changes aria-hidden', () => {
+ element.opened = true;
+
+ assert.isNull(element.getAttribute('aria-hidden'));
+
+ element.opened = false;
+
+ assert.isDefined(element.getAttribute('aria-hidden'));
+ });
+});