Project import generated by Copybara.
GitOrigin-RevId: d9e9e3fb4e31372ec1fb43b178994ca78fa8fe70
diff --git a/static_src/elements/framework/dialogs/mr-change-columns/mr-change-columns.test.js b/static_src/elements/framework/dialogs/mr-change-columns/mr-change-columns.test.js
new file mode 100644
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+++ b/static_src/elements/framework/dialogs/mr-change-columns/mr-change-columns.test.js
@@ -0,0 +1,75 @@
+// 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 {MrChangeColumns} from './mr-change-columns.js';
+
+
+let element;
+
+describe('mr-change-columns', () => {
+ beforeEach(() => {
+ element = document.createElement('mr-change-columns');
+ document.body.appendChild(element);
+
+ element._page = sinon.stub();
+ sinon.stub(element, '_currentPage').get(() => '/test');
+ });
+
+ afterEach(() => {
+ document.body.removeChild(element);
+ });
+
+ it('initializes', () => {
+ assert.instanceOf(element, MrChangeColumns);
+ });
+
+ it('input initializes with currently set columns', async () => {
+ element.columns = ['ID', 'Summary'];
+
+ await element.updateComplete;
+
+ const input = element.shadowRoot.querySelector('#columnsInput');
+
+ assert.equal(input.value, 'ID Summary');
+ });
+
+ it('editing input and saving updates columns in URL', async () => {
+ element.columns = ['ID', 'Summary'];
+ element.queryParams = {};
+
+ await element.updateComplete;
+
+ const input = element.shadowRoot.querySelector('#columnsInput');
+ input.value = 'ID Summary Owner';
+
+ element.save();
+
+ sinon.assert.calledWith(element._page,
+ '/test?colspec=ID%2BSummary%2BOwner');
+ });
+
+ it('submitting form updates colspec', async () => {
+ element.columns = ['ID', 'Summary'];
+ element.queryParams = {};
+
+ await element.updateComplete;
+
+ const input = element.shadowRoot.querySelector('#columnsInput');
+ input.value = 'ID Summary Component';
+
+ // Note: HTMLFormElement.submit() does not fire event listeners.
+ const submitEvent = new Event('submit');
+ sinon.spy(submitEvent, 'preventDefault');
+ const form = element.shadowRoot.querySelector('form');
+ form.dispatchEvent(submitEvent);
+
+ // Preventing default is important to prevent native browser form submit
+ // from causing an additional navigation.
+ sinon.assert.calledOnce(submitEvent.preventDefault);
+
+ sinon.assert.calledWith(element._page,
+ '/test?colspec=ID%2BSummary%2BComponent');
+ });
+});