The Tor Browser: addon-sdk/source/test/test-ui-action-button.js@ac0c01689b40 (annotated)

addon-sdk/source/test/test-ui-action-button.js@ac0c01689b40 (annotated)

addon-sdk/source/test/test-ui-action-button.js

Thu, 15 Jan 2015 15:59:08 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 15 Jan 2015 15:59:08 +0100
branch: TOR_BUG_9701
changeset 10: ac0c01689b40
permissions: -rw-r--r--

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 'use strict';
 module.metadata = {
   'engines': {
     'Firefox': '> 28'
   }
 };
 const { Cu } = require('chrome');
 const { Loader } = require('sdk/test/loader');
 const { data } = require('sdk/self');
 const { open, focus, close } = require('sdk/window/helpers');
 const { setTimeout } = require('sdk/timers');
 const { getMostRecentBrowserWindow } = require('sdk/window/utils');
 const { partial } = require('sdk/lang/functional');
 const openBrowserWindow = partial(open, null, {features: {toolbar: true}});
 const openPrivateBrowserWindow = partial(open, null,
   {features: {toolbar: true, private: true}});
 function getWidget(buttonId, window = getMostRecentBrowserWindow()) {
   const { CustomizableUI } = Cu.import('resource:///modules/CustomizableUI.jsm', {});
   const { AREA_NAVBAR } = CustomizableUI;
   let widgets = CustomizableUI.getWidgetIdsInArea(AREA_NAVBAR).
     filter((id) => id.startsWith('action-button--') && id.endsWith(buttonId));
   if (widgets.length === 0)
     throw new Error('Widget with id `' + id +'` not found.');
   if (widgets.length > 1)
     throw new Error('Unexpected number of widgets: ' + widgets.length)
   return CustomizableUI.getWidget(widgets[0]).forWindow(window);
 };
 exports['test basic constructor validation'] = function(assert) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   assert.throws(
     () => ActionButton({}),
     /^The option/,
     'throws on no option given');
   // Test no label
   assert.throws(
     () => ActionButton({ id: 'my-button', icon: './icon.png'}),
     /^The option "label"/,
     'throws on no label given');
   // Test no id
   assert.throws(
     () => ActionButton({ label: 'my button', icon: './icon.png' }),
     /^The option "id"/,
     'throws on no id given');
   // Test no icon
   assert.throws(
     () => ActionButton({ id: 'my-button', label: 'my button' }),
     /^The option "icon"/,
     'throws on no icon given');
   // Test empty label
   assert.throws(
     () => ActionButton({ id: 'my-button', label: '', icon: './icon.png' }),
     /^The option "label"/,
     'throws on no valid label given');
   // Test invalid id
   assert.throws(
     () => ActionButton({ id: 'my button', label: 'my button', icon: './icon.png' }),
     /^The option "id"/,
     'throws on no valid id given');
   // Test empty id
   assert.throws(
     () => ActionButton({ id: '', label: 'my button', icon: './icon.png' }),
     /^The option "id"/,
     'throws on no valid id given');
   // Test remote icon
   assert.throws(
     () => ActionButton({ id: 'my-button', label: 'my button', icon: 'http://www.mozilla.org/favicon.ico'}),
     /^The option "icon"/,
     'throws on no valid icon given');
   // Test wrong icon: no absolute URI to local resource, neither relative './'
   assert.throws(
     () => ActionButton({ id: 'my-button', label: 'my button', icon: 'icon.png'}),
     /^The option "icon"/,
     'throws on no valid icon given');
   // Test wrong icon: no absolute URI to local resource, neither relative './'
   assert.throws(
     () => ActionButton({ id: 'my-button', label: 'my button', icon: 'foo and bar'}),
     /^The option "icon"/,
     'throws on no valid icon given');
   // Test wrong icon: '../' is not allowed
   assert.throws(
     () => ActionButton({ id: 'my-button', label: 'my button', icon: '../icon.png'}),
     /^The option "icon"/,
     'throws on no valid icon given');
   loader.unload();
 };
 exports['test button added'] = function(assert) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let button = ActionButton({
     id: 'my-button-1',
     label: 'my button',
     icon: './icon.png'
   });
   // check defaults
   assert.equal(button.disabled, false,
     'disabled is set to default `false` value');
   let { node } = getWidget(button.id);
   assert.ok(!!node, 'The button is in the navbar');
   assert.equal(button.label, node.getAttribute('label'),
     'label is set');
   assert.equal(button.label, node.getAttribute('tooltiptext'),
     'tooltip is set');
   assert.equal(data.url(button.icon.substr(2)), node.getAttribute('image'),
     'icon is set');
   loader.unload();
 }
 exports['test button added with resource URI'] = function(assert) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let button = ActionButton({
     id: 'my-button-1',
     label: 'my button',
     icon: data.url('icon.png')
   });
   assert.equal(button.icon, data.url('icon.png'),
     'icon is set');
   let { node } = getWidget(button.id);
   assert.equal(button.icon, node.getAttribute('image'),
     'icon on node is set');
   loader.unload();
 }
 exports['test button duplicate id'] = function(assert) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let button = ActionButton({
     id: 'my-button-2',
     label: 'my button',
     icon: './icon.png'
   });
   assert.throws(() => {
     let doppelganger = ActionButton({
       id: 'my-button-2',
       label: 'my button',
       icon: './icon.png'
     });
   },
   /^The ID/,
   'No duplicates allowed');
   loader.unload();
 }
 exports['test button multiple destroy'] = function(assert) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let button = ActionButton({
     id: 'my-button-2',
     label: 'my button',
     icon: './icon.png'
   });
   button.destroy();
   button.destroy();
   button.destroy();
   assert.pass('multiple destroy doesn\'t matter');
   loader.unload();
 }
 exports['test button removed on dispose'] = function(assert, done) {
   const { CustomizableUI } = Cu.import('resource:///modules/CustomizableUI.jsm', {});
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let widgetId;
   CustomizableUI.addListener({
     onWidgetDestroyed: function(id) {
       if (id === widgetId) {
         CustomizableUI.removeListener(this);
         assert.pass('button properly removed');
         loader.unload();
         done();
       }
     }
   });
   let button = ActionButton({
     id: 'my-button-3',
     label: 'my button',
     icon: './icon.png'
   });
   // Tried to use `getWidgetIdsInArea` but seems undefined, not sure if it
   // was removed or it's not in the UX build yet
   widgetId = getWidget(button.id).id;
   button.destroy();
 };
 exports['test button global state updated'] = function(assert) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let button = ActionButton({
     id: 'my-button-4',
     label: 'my button',
     icon: './icon.png'
   });
   // Tried to use `getWidgetIdsInArea` but seems undefined, not sure if it
   // was removed or it's not in the UX build yet
   let { node, id: widgetId } = getWidget(button.id);
   // check read-only properties
   assert.throws(() => button.id = 'another-id',
     /^setting a property that has only a getter/,
     'id cannot be set at runtime');
   assert.equal(button.id, 'my-button-4',
     'id is unchanged');
   assert.equal(node.id, widgetId,
     'node id is unchanged');
   // check writable properties
   button.label = 'New label';
   assert.equal(button.label, 'New label',
     'label is updated');
   assert.equal(node.getAttribute('label'), 'New label',
     'node label is updated');
   assert.equal(node.getAttribute('tooltiptext'), 'New label',
     'node tooltip is updated');
   button.icon = './new-icon.png';
   assert.equal(button.icon, './new-icon.png',
     'icon is updated');
   assert.equal(node.getAttribute('image'), data.url('new-icon.png'),
     'node image is updated');
   button.disabled = true;
   assert.equal(button.disabled, true,
     'disabled is updated');
   assert.equal(node.getAttribute('disabled'), 'true',
     'node disabled is updated');
   // TODO: test validation on update
   loader.unload();
 }
 exports['test button global state set and get with state method'] = function(assert) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let button = ActionButton({
     id: 'my-button-16',
     label: 'my button',
     icon: './icon.png'
   });
   // read the button's state
   let state = button.state(button);
   assert.equal(state.label, 'my button',
     'label is correct');
   assert.equal(state.icon, './icon.png',
     'icon is correct');
   assert.equal(state.disabled, false,
     'disabled is correct');
   // set the new button's state
   button.state(button, {
     label: 'New label',
     icon: './new-icon.png',
     disabled: true
   });
   assert.equal(button.label, 'New label',
     'label is updated');
   assert.equal(button.icon, './new-icon.png',
     'icon is updated');
   assert.equal(button.disabled, true,
     'disabled is updated');
   loader.unload();
 }
 exports['test button global state updated on multiple windows'] = function(assert, done) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let button = ActionButton({
     id: 'my-button-5',
     label: 'my button',
     icon: './icon.png'
   });
   let nodes = [getWidget(button.id).node];
   openBrowserWindow().then(window => {
     nodes.push(getWidget(button.id, window).node);
     button.label = 'New label';
     button.icon = './new-icon.png';
     button.disabled = true;
     for (let node of nodes) {
       assert.equal(node.getAttribute('label'), 'New label',
         'node label is updated');
       assert.equal(node.getAttribute('tooltiptext'), 'New label',
         'node tooltip is updated');
       assert.equal(button.icon, './new-icon.png',
         'icon is updated');
       assert.equal(node.getAttribute('image'), data.url('new-icon.png'),
         'node image is updated');
       assert.equal(button.disabled, true,
         'disabled is updated');
       assert.equal(node.getAttribute('disabled'), 'true',
         'node disabled is updated');
     };
     return window;
   }).
   then(close).
   then(loader.unload).
   then(done, assert.fail);
 };
 exports['test button window state'] = function(assert, done) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let { browserWindows } = loader.require('sdk/windows');
   let button = ActionButton({
     id: 'my-button-6',
     label: 'my button',
     icon: './icon.png'
   });
   let mainWindow = browserWindows.activeWindow;
   let nodes = [getWidget(button.id).node];
   openBrowserWindow().then(focus).then(window => {
     nodes.push(getWidget(button.id, window).node);
     let { activeWindow } = browserWindows;
     button.state(activeWindow, {
       label: 'New label',
       icon: './new-icon.png',
       disabled: true
     });
     // check the states
     assert.equal(button.label, 'my button',
       'global label unchanged');
     assert.equal(button.icon, './icon.png',
       'global icon unchanged');
     assert.equal(button.disabled, false,
       'global disabled unchanged');
     let state = button.state(mainWindow);
     assert.equal(state.label, 'my button',
       'previous window label unchanged');
     assert.equal(state.icon, './icon.png',
       'previous window icon unchanged');
     assert.equal(state.disabled, false,
       'previous window disabled unchanged');
     let state = button.state(activeWindow);
     assert.equal(state.label, 'New label',
       'active window label updated');
     assert.equal(state.icon, './new-icon.png',
       'active window icon updated');
     assert.equal(state.disabled, true,
       'active disabled updated');
     // change the global state, only the windows without a state are affected
     button.label = 'A good label';
     assert.equal(button.label, 'A good label',
       'global label updated');
     assert.equal(button.state(mainWindow).label, 'A good label',
       'previous window label updated');
     assert.equal(button.state(activeWindow).label, 'New label',
       'active window label unchanged');
     // delete the window state will inherits the global state again
     button.state(activeWindow, null);
     assert.equal(button.state(activeWindow).label, 'A good label',
       'active window label inherited');
     // check the nodes properties
     let node = nodes[0];
     let state = button.state(mainWindow);
     assert.equal(node.getAttribute('label'), state.label,
       'node label is correct');
     assert.equal(node.getAttribute('tooltiptext'), state.label,
       'node tooltip is correct');
     assert.equal(node.getAttribute('image'), data.url(state.icon.substr(2)),
       'node image is correct');
     assert.equal(node.hasAttribute('disabled'), state.disabled,
       'disabled is correct');
     let node = nodes[1];
     let state = button.state(activeWindow);
     assert.equal(node.getAttribute('label'), state.label,
       'node label is correct');
     assert.equal(node.getAttribute('tooltiptext'), state.label,
       'node tooltip is correct');
     assert.equal(node.getAttribute('image'), data.url(state.icon.substr(2)),
       'node image is correct');
     assert.equal(node.hasAttribute('disabled'), state.disabled,
       'disabled is correct');
     return window;
   }).
   then(close).
   then(loader.unload).
   then(done, assert.fail);
 };
 exports['test button tab state'] = function(assert, done) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let { browserWindows } = loader.require('sdk/windows');
   let tabs = loader.require('sdk/tabs');
   let button = ActionButton({
     id: 'my-button-7',
     label: 'my button',
     icon: './icon.png'
   });
   let mainTab = tabs.activeTab;
   let node = getWidget(button.id).node;
   tabs.open({
     url: 'about:blank',
     onActivate: function onActivate(tab) {
       tab.removeListener('activate', onActivate);
       let { activeWindow } = browserWindows;
       // set window state
       button.state(activeWindow, {
         label: 'Window label',
         icon: './window-icon.png'
       });
       // set previous active tab state
       button.state(mainTab, {
         label: 'Tab label',
         icon: './tab-icon.png',
       });
       // set current active tab state
       button.state(tab, {
         icon: './another-tab-icon.png',
         disabled: true
       });
       // check the states
       Cu.schedulePreciseGC(() => {
         assert.equal(button.label, 'my button',
           'global label unchanged');
         assert.equal(button.icon, './icon.png',
           'global icon unchanged');
         assert.equal(button.disabled, false,
           'global disabled unchanged');
         let state = button.state(mainTab);
         assert.equal(state.label, 'Tab label',
           'previous tab label updated');
         assert.equal(state.icon, './tab-icon.png',
           'previous tab icon updated');
         assert.equal(state.disabled, false,
           'previous tab disabled unchanged');
         let state = button.state(tab);
         assert.equal(state.label, 'Window label',
           'active tab inherited from window state');
         assert.equal(state.icon, './another-tab-icon.png',
           'active tab icon updated');
         assert.equal(state.disabled, true,
           'active disabled updated');
         // change the global state
         button.icon = './good-icon.png';
         // delete the tab state
         button.state(tab, null);
         assert.equal(button.icon, './good-icon.png',
           'global icon updated');
         assert.equal(button.state(mainTab).icon, './tab-icon.png',
           'previous tab icon unchanged');
         assert.equal(button.state(tab).icon, './window-icon.png',
           'tab icon inherited from window');
         // delete the window state
         button.state(activeWindow, null);
         assert.equal(button.state(tab).icon, './good-icon.png',
           'tab icon inherited from global');
         // check the node properties
         let state = button.state(tabs.activeTab);
         assert.equal(node.getAttribute('label'), state.label,
           'node label is correct');
         assert.equal(node.getAttribute('tooltiptext'), state.label,
           'node tooltip is correct');
         assert.equal(node.getAttribute('image'), data.url(state.icon.substr(2)),
           'node image is correct');
         assert.equal(node.hasAttribute('disabled'), state.disabled,
           'disabled is correct');
         tabs.once('activate', () => {
           // This is made in order to avoid to check the node before it
           // is updated, need a better check
           setTimeout(() => {
             let state = button.state(mainTab);
             assert.equal(node.getAttribute('label'), state.label,
               'node label is correct');
             assert.equal(node.getAttribute('tooltiptext'), state.label,
               'node tooltip is correct');
             assert.equal(node.getAttribute('image'), data.url(state.icon.substr(2)),
               'node image is correct');
             assert.equal(node.hasAttribute('disabled'), state.disabled,
               'disabled is correct');
             tab.close(() => {
               loader.unload();
               done();
             });
           }, 500);
         });
         mainTab.activate();
       });
     }
   });
 };
 exports['test button click'] = function(assert, done) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let { browserWindows } = loader.require('sdk/windows');
   let labels = [];
   let button = ActionButton({
     id: 'my-button-8',
     label: 'my button',
     icon: './icon.png',
     onClick: ({label}) => labels.push(label)
   });
   let mainWindow = browserWindows.activeWindow;
   let chromeWindow = getMostRecentBrowserWindow();
   openBrowserWindow().then(focus).then(window => {
     button.state(mainWindow, { label: 'nothing' });
     button.state(mainWindow.tabs.activeTab, { label: 'foo'})
     button.state(browserWindows.activeWindow, { label: 'bar' });
     button.click();
     focus(chromeWindow).then(() => {
       button.click();
       assert.deepEqual(labels, ['bar', 'foo'],
         'button click works');
       close(window).
         then(loader.unload).
         then(done, assert.fail);
     });
   }).then(null, assert.fail);
 }
 exports['test button icon set'] = function(assert) {
   const { CustomizableUI } = Cu.import('resource:///modules/CustomizableUI.jsm', {});
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   // Test remote icon set
   assert.throws(
     () => ActionButton({
       id: 'my-button-10',
       label: 'my button',
       icon: {
         '16': 'http://www.mozilla.org/favicon.ico'
       }
     }),
     /^The option "icon"/,
     'throws on no valid icon given');
   let button = ActionButton({
     id: 'my-button-11',
     label: 'my button',
     icon: {
       '5': './icon5.png',
       '16': './icon16.png',
       '32': './icon32.png',
       '64': './icon64.png'
     }
   });
   let { node, id: widgetId } = getWidget(button.id);
   let { devicePixelRatio } = node.ownerDocument.defaultView;
   let size = 16 * devicePixelRatio;
   assert.equal(node.getAttribute('image'), data.url(button.icon[size].substr(2)),
     'the icon is set properly in navbar');
   let size = 32 * devicePixelRatio;
   CustomizableUI.addWidgetToArea(widgetId, CustomizableUI.AREA_PANEL);
   assert.equal(node.getAttribute('image'), data.url(button.icon[size].substr(2)),
     'the icon is set properly in panel');
   // Using `loader.unload` without move back the button to the original area
   // raises an error in the CustomizableUI. This is doesn't happen if the
   // button is moved manually from navbar to panel. I believe it has to do
   // with `addWidgetToArea` method, because even with a `timeout` the issue
   // persist.
   CustomizableUI.addWidgetToArea(widgetId, CustomizableUI.AREA_NAVBAR);
   loader.unload();
 }
 exports['test button icon se with only one option'] = function(assert) {
   const { CustomizableUI } = Cu.import('resource:///modules/CustomizableUI.jsm', {});
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   // Test remote icon set
   assert.throws(
     () => ActionButton({
       id: 'my-button-10',
       label: 'my button',
       icon: {
         '16': 'http://www.mozilla.org/favicon.ico'
       }
     }),
     /^The option "icon"/,
     'throws on no valid icon given');
   let button = ActionButton({
     id: 'my-button-11',
     label: 'my button',
     icon: {
       '5': './icon5.png'
     }
   });
   let { node, id: widgetId } = getWidget(button.id);
   assert.equal(node.getAttribute('image'), data.url(button.icon['5'].substr(2)),
     'the icon is set properly in navbar');
   CustomizableUI.addWidgetToArea(widgetId, CustomizableUI.AREA_PANEL);
   assert.equal(node.getAttribute('image'), data.url(button.icon['5'].substr(2)),
     'the icon is set properly in panel');
   // Using `loader.unload` without move back the button to the original area
   // raises an error in the CustomizableUI. This is doesn't happen if the
   // button is moved manually from navbar to panel. I believe it has to do
   // with `addWidgetToArea` method, because even with a `timeout` the issue
   // persist.
   CustomizableUI.addWidgetToArea(widgetId, CustomizableUI.AREA_NAVBAR);
   loader.unload();
 }
 exports['test button state validation'] = function(assert) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let { browserWindows } = loader.require('sdk/windows');
   let button = ActionButton({
     id: 'my-button-12',
     label: 'my button',
     icon: './icon.png'
   })
   let state = button.state(button);
   assert.throws(
     () => button.state(button, { icon: 'http://www.mozilla.org/favicon.ico' }),
     /^The option "icon"/,
     'throws on remote icon given');
   loader.unload();
 };
 exports['test button are not in private windows'] = function(assert, done) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let{ isPrivate } = loader.require('sdk/private-browsing');
   let { browserWindows } = loader.require('sdk/windows');
   let button = ActionButton({
     id: 'my-button-13',
     label: 'my button',
     icon: './icon.png'
   });
   openPrivateBrowserWindow().then(window => {
     assert.ok(isPrivate(window),
       'the new window is private');
     let { node } = getWidget(button.id, window);
     assert.ok(!node || node.style.display === 'none',
       'the button is not added / is not visible on private window');
     return window;
   }).
   then(close).
   then(loader.unload).
   then(done, assert.fail)
 }
 exports['test button state are snapshot'] = function(assert) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let { browserWindows } = loader.require('sdk/windows');
   let tabs = loader.require('sdk/tabs');
   let button = ActionButton({
     id: 'my-button-14',
     label: 'my button',
     icon: './icon.png'
   });
   let state = button.state(button);
   let windowState = button.state(browserWindows.activeWindow);
   let tabState = button.state(tabs.activeTab);
   assert.deepEqual(windowState, state,
     'window state has the same properties of button state');
   assert.deepEqual(tabState, state,
     'tab state has the same properties of button state');
   assert.notEqual(windowState, state,
     'window state is not the same object of button state');
   assert.notEqual(tabState, state,
     'tab state is not the same object of button state');
   assert.deepEqual(button.state(button), state,
     'button state has the same content of previous button state');
   assert.deepEqual(button.state(browserWindows.activeWindow), windowState,
     'window state has the same content of previous window state');
   assert.deepEqual(button.state(tabs.activeTab), tabState,
     'tab state has the same content of previous tab state');
   assert.notEqual(button.state(button), state,
     'button state is not the same object of previous button state');
   assert.notEqual(button.state(browserWindows.activeWindow), windowState,
     'window state is not the same object of previous window state');
   assert.notEqual(button.state(tabs.activeTab), tabState,
     'tab state is not the same object of previous tab state');
   loader.unload();
 }
 exports['test button icon object is a snapshot'] = function(assert) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let icon = {
     '16': './foo.png'
   };
   let button = ActionButton({
     id: 'my-button-17',
     label: 'my button',
     icon: icon
   });
   assert.deepEqual(button.icon, icon,
     'button.icon has the same properties of the object set in the constructor');
   assert.notEqual(button.icon, icon,
     'button.icon is not the same object of the object set in the constructor');
   assert.throws(
     () => button.icon[16] = './bar.png',
     /16 is read-only/,
     'properties of button.icon are ready-only'
   );
   let newIcon = {'16': './bar.png'};
   button.icon = newIcon;
   assert.deepEqual(button.icon, newIcon,
     'button.icon has the same properties of the object set');
   assert.notEqual(button.icon, newIcon,
     'button.icon is not the same object of the object set');
   loader.unload();
 }
 exports['test button after destroy'] = function(assert) {
   let loader = Loader(module);
   let { ActionButton } = loader.require('sdk/ui');
   let { browserWindows } = loader.require('sdk/windows');
   let { activeTab } = loader.require('sdk/tabs');
   let button = ActionButton({
     id: 'my-button-15',
     label: 'my button',
     icon: './icon.png',
     onClick: () => assert.fail('onClick should not be called')
   });
   button.destroy();
   assert.throws(
     () => button.click(),
     /^The state cannot be set or get/,
     'button.click() not executed');
   assert.throws(
     () => button.label,
     /^The state cannot be set or get/,
     'button.label cannot be get after destroy');
   assert.throws(
     () => button.label = 'my label',
     /^The state cannot be set or get/,
     'button.label cannot be set after destroy');
   assert.throws(
     () => {
       button.state(browserWindows.activeWindow, {
         label: 'window label'
       });
     },
     /^The state cannot be set or get/,
     'window state label cannot be set after destroy');
   assert.throws(
     () => button.state(browserWindows.activeWindow).label,
     /^The state cannot be set or get/,
     'window state label cannot be get after destroy');
   assert.throws(
     () => {
       button.state(activeTab, {
         label: 'tab label'
       });
     },
     /^The state cannot be set or get/,
     'tab state label cannot be set after destroy');
   assert.throws(
     () => button.state(activeTab).label,
     /^The state cannot be set or get/,
     'window state label cannot se get after destroy');
   loader.unload();
 };
 require('sdk/test').run(exports);