chrome/test/data/webui/settings/checkbox_tests.js

// Copyright 2015 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.

/** @fileoverview Suite of tests for settings-checkbox. */
cr.define('settings_checkbox', function() {
  suite('SettingsCheckbox', function() {
    /**
     * Checkbox created before each test.
     * @type {SettingsCheckbox}
     */
    let testElement;

    /**
     * Pref value used in tests, should reflect checkbox 'checked' attribute.
     * @type {SettingsCheckbox}
     */
    const pref = {
      key: 'test',
      type: chrome.settingsPrivate.PrefType.BOOLEAN,
      value: true
    };

    // Initialize a checked settings-checkbox before each test.
    setup(function() {
      PolymerTest.clearBody();
      testElement = document.createElement('settings-checkbox');
      testElement.set('pref', pref);
      document.body.appendChild(testElement);
    });

    test('value changes on tap', function() {
      assertTrue(testElement.checked);

      MockInteractions.tap(testElement.$.checkbox);
      assertFalse(testElement.checked);
      assertFalse(pref.value);

      MockInteractions.tap(testElement.$.checkbox);
      assertTrue(testElement.checked);
      assertTrue(pref.value);
    });

    test('fires a change event', function(done) {
      testElement.addEventListener('change', function() {
        assertFalse(testElement.checked);
        done();
      });
      MockInteractions.tap(testElement.$.checkbox);
    });

    test('does not change when disabled', function() {
      testElement.checked = false;
      testElement.setAttribute('disabled', '');
      assertTrue(testElement.disabled);
      assertTrue(testElement.$.checkbox.disabled);

      MockInteractions.tap(testElement.$.checkbox);
      assertFalse(testElement.checked);
      assertFalse(testElement.$.checkbox.checked);
    });

    test('numerical pref', function() {
      const prefNum = {
        key: 'test',
        type: chrome.settingsPrivate.PrefType.NUMBER,
        value: 1
      };

      testElement.set('pref', prefNum);
      assertTrue(testElement.checked);

      MockInteractions.tap(testElement.$.checkbox);
      assertFalse(testElement.checked);
      assertEquals(0, prefNum.value);

      MockInteractions.tap(testElement.$.checkbox);
      assertTrue(testElement.checked);
      assertEquals(1, prefNum.value);
    });
  });
});