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// Copyright 2008 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
goog.provide('goog.dom.ViewportSizeMonitorTest');
goog.setTestOnly('goog.dom.ViewportSizeMonitorTest');
goog.require('goog.dom.ViewportSizeMonitor');
goog.require('goog.events');
goog.require('goog.events.Event');
goog.require('goog.events.EventTarget');
goog.require('goog.events.EventType');
goog.require('goog.math.Size');
goog.require('goog.testing.MockClock');
goog.require('goog.testing.PropertyReplacer');
goog.require('goog.testing.jsunit');
var propertyReplacer, fakeWindow, viewportSizeMonitor, mockClock;
function FakeWindow() {
FakeWindow.base(this, 'constructor');
}
goog.inherits(FakeWindow, goog.events.EventTarget);
FakeWindow.prototype.fireResize = function() {
return this.dispatchEvent(new FakeResizeEvent());
};
function FakeResizeEvent(obj) {
this.type = goog.events.EventType.RESIZE;
}
goog.inherits(FakeResizeEvent, goog.events.Event);
function getViewportSize() {
return viewportSize;
}
function setViewportSize(w, h, fireEvent) {
this.viewportSize = new goog.math.Size(w, h);
if (fireEvent) {
fakeWindow.fireResize();
}
}
var eventWasFired = {};
function getListenerFn(id) {
return function() { propertyReplacer.set(eventWasFired, id, true); };
}
function listenerWasCalled(id) {
return !!eventWasFired[id];
}
function setUp() {
propertyReplacer = new goog.testing.PropertyReplacer();
propertyReplacer.set(goog.dom, 'getViewportSize', getViewportSize);
mockClock = new goog.testing.MockClock();
mockClock.install();
fakeWindow = new FakeWindow();
setViewportSize(300, 300);
viewportSizeMonitor = new goog.dom.ViewportSizeMonitor(fakeWindow);
}
function tearDown() {
propertyReplacer.reset();
mockClock.uninstall();
}
function testResizeEvent() {
goog.events.listen(
viewportSizeMonitor, goog.events.EventType.RESIZE, getListenerFn(1));
assertFalse(
'Listener should not be called if window was not resized',
listenerWasCalled(1));
setViewportSize(300, 300, true);
assertFalse(
'Listener should not be called for bogus resize event',
listenerWasCalled(1));
setViewportSize(301, 301, true);
assertTrue(
'Listener should be called for valid resize event', listenerWasCalled(1));
}
function testInstanceGetter() {
var fakeWindow1 = new FakeWindow();
var monitor1 = goog.dom.ViewportSizeMonitor.getInstanceForWindow(fakeWindow1);
var monitor2 = goog.dom.ViewportSizeMonitor.getInstanceForWindow(fakeWindow1);
assertEquals(
'The same window should give us the same instance monitor', monitor1,
monitor2);
var fakeWindow2 = new FakeWindow();
var monitor3 = goog.dom.ViewportSizeMonitor.getInstanceForWindow(fakeWindow2);
assertNotEquals(
'Different windows should give different instances', monitor1, monitor3);
assertEquals(
'Monitors should match if opt_window is not provided',
goog.dom.ViewportSizeMonitor.getInstanceForWindow(),
goog.dom.ViewportSizeMonitor.getInstanceForWindow());
}
function testRemoveInstanceForWindow() {
var fakeWindow1 = new FakeWindow();
var monitor1 = goog.dom.ViewportSizeMonitor.getInstanceForWindow(fakeWindow1);
goog.dom.ViewportSizeMonitor.removeInstanceForWindow(fakeWindow1);
assertTrue(monitor1.isDisposed());
var monitor2 = goog.dom.ViewportSizeMonitor.getInstanceForWindow(fakeWindow1);
assertNotEquals(monitor1, monitor2);
}
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