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<!DOCTYPE html>
<html>
<!--
Copyright 2008 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Closure Unit Tests - goog.dom.ViewportSizeMonitor</title>
<script src="../base.js"></script>
<script>
goog.require('goog.dom.ViewportSizeMonitor');
goog.require('goog.events.Event');
goog.require('goog.events.EventTarget');
goog.require('goog.events.EventType');
goog.require('goog.testing.jsunit');
goog.require('goog.testing.MockClock');
goog.require('goog.testing.PropertyReplacer');
</script>
</head>
<body>
<script>
var propertyReplacer, fakeWindow, viewportSizeMonitor, mockClock;
function FakeWindow() {
};
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 testPollingEvent() {
propertyReplacer.set(goog.dom.ViewportSizeMonitor.prototype,
'isPollingRequired_', function() { return true; });
viewportSizeMonitor = new goog.dom.ViewportSizeMonitor(fakeWindow);
goog.events.listen(viewportSizeMonitor, goog.events.EventType.RESIZE,
getListenerFn(1));
assertFalse('Listener should not be called if window was not resized',
listenerWasCalled(1));
mockClock.tick(goog.dom.ViewportSizeMonitor.WINDOW_SIZE_POLL_RATE);
assertFalse('Listener should not be called if window was not resized ' +
'during polling', listenerWasCalled(1));
setViewportSize(301, 301, false);
mockClock.tick(goog.dom.ViewportSizeMonitor.WINDOW_SIZE_POLL_RATE);
assertTrue('Listener should be called for valid resize during polling',
listenerWasCalled(1));
};
function testIsPollingRequired() {
propertyReplacer.set(goog.userAgent, 'WEBKIT', false);
propertyReplacer.set(goog.userAgent, 'OPERA', false);
assertFalse('Polling should not be required except for WebKit and Opera',
viewportSizeMonitor.isPollingRequired_());
propertyReplacer.set(goog.userAgent, 'WEBKIT', true);
propertyReplacer.set(goog.userAgent, 'WINDOWS', true);
assertTrue('WebKit on Windows should require polling',
viewportSizeMonitor.isPollingRequired_());
propertyReplacer.set(goog.userAgent, 'WEBKIT', false);
propertyReplacer.set(goog.userAgent, 'OPERA', true);
// window.top and window.self are read-only in Opera
fakeWindow.self = fakeWindow;
fakeWindow.top = {};
assertEquals('Opera should require polling if window.top != window.self',
viewportSizeMonitor.isPollingRequired_(), true);
fakeWindow.self = fakeWindow;
fakeWindow.top = fakeWindow;
assertEquals(
'Opera should not require polling if window.top == window.self',
viewportSizeMonitor.isPollingRequired_(), false);
};
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);
};
</script>
</body>
</html>
|
