MD Settings: add tests for <controlled-button>

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

+// Copyright 2016 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.
+
+suite('controlled button', function() {
+  /** @type {ControlledButtonElement} */
+  var button;
+
+  /** @type {!chrome.settingsPrivate.PrefObject} */
+  var pref = {
+    key: 'test',
+    type: chrome.settingsPrivate.PrefType.BOOLEAN,
+    value: true
+  };
+
+  setup(function() {
+    PolymerTest.clearBody();
+    button = document.createElement('controlled-button');
+    button.pref = pref;
+    document.body.appendChild(button);
+  });
+
+  test('disables when pref is managed', function() {
+    button.set('pref.policyEnforcement',
+               chrome.settingsPrivate.PolicyEnforcement.ENFORCED);
+    Polymer.dom.flush();
+    assertTrue(button.$$('paper-button').disabled);
+
+    var indicator = button.$$('cr-policy-pref-indicator');
+    assertTrue(!!indicator);
+    assertGT(indicator.clientHeight, 0);
+
+    button.set('pref.policyEnforcement', undefined);
+    Polymer.dom.flush();
+    assertFalse(button.$$('paper-button').disabled);
+    assertEquals(0, indicator.clientHeight);
+  });
+});