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<!DOCTYPE html>
<html>
<!--
Copyright 2012 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>
<title>Tests for goog.dom.BufferedViewportSizeMonitor</title>
<script type="text/javascript" src="../base.js"></script>
<script type="text/javascript">
goog.require('goog.dom.ViewportSizeMonitor');
goog.require('goog.events');
goog.require('goog.events.EventType');
goog.require('goog.math.Size');
goog.require('goog.testing.events');
goog.require('goog.testing.events.Event');
goog.require('goog.testing.jsunit');
goog.require('goog.testing.MockClock');
goog.require('goog.dom.BufferedViewportSizeMonitor');
</script>
</head>
<body>
<script type="text/javascript">
var RESIZE_DELAY = goog.dom.BufferedViewportSizeMonitor.RESIZE_EVENT_DELAY_MS_;
var INITIAL_SIZE = new goog.math.Size(111, 111);
var mockControl;
var viewportSizeMonitor;
var bufferedVsm;
var timer = new goog.testing.MockClock();
var resizeEventCount = 0;
var size;
var resizeCallback = function() {
resizeEventCount++;
};
function setUp() {
timer.install();
size = INITIAL_SIZE;
viewportSizeMonitor = new goog.dom.ViewportSizeMonitor();
viewportSizeMonitor.getSize = function() { return size };
bufferedVsm = new goog.dom.BufferedViewportSizeMonitor(viewportSizeMonitor);
goog.events.listen(bufferedVsm, goog.events.EventType.RESIZE, resizeCallback);
}
function tearDown() {
goog.events.unlisten(
bufferedVsm, goog.events.EventType.RESIZE, resizeCallback);
resizeEventCount = 0;
timer.uninstall();
}
function testInitialSizes() {
assertTrue(goog.math.Size.equals(
INITIAL_SIZE, bufferedVsm.getPreviousSize()));
assertTrue(goog.math.Size.equals(INITIAL_SIZE, bufferedVsm.getSize()));
}
function testWindowResize() {
assertEquals(0, resizeEventCount);
resize(100, 100);
timer.tick(RESIZE_DELAY - 1);
assertEquals(
'No resize expected before the delay is fired', 0, resizeEventCount);
timer.tick(1);
assertEquals('Expected resize after delay', 1, resizeEventCount);
assertTrue(goog.math.Size.equals(
INITIAL_SIZE, bufferedVsm.getPreviousSize()));
assertTrue(goog.math.Size.equals(
new goog.math.Size(100, 100), bufferedVsm.getSize()));
}
function testWindowResize_eventBatching() {
assertEquals('No resize calls expected before resize events',
0, resizeEventCount);
resize(100, 100);
timer.tick(RESIZE_DELAY - 1);
resize(200, 200);
assertEquals(
'No resize expected before the delay is fired', 0, resizeEventCount);
timer.tick(1);
assertEquals(
'No resize expected when delay is restarted', 0, resizeEventCount);
timer.tick(RESIZE_DELAY);
assertEquals('Expected resize after delay', 1, resizeEventCount);
}
function testWindowResize_noChange() {
resize(100, 100);
timer.tick(RESIZE_DELAY);
assertEquals(1, resizeEventCount);
resize(100, 100);
timer.tick(RESIZE_DELAY);
assertEquals(
'No resize expected when size doesn\'t change', 1, resizeEventCount);
assertTrue(goog.math.Size.equals(
INITIAL_SIZE, bufferedVsm.getPreviousSize()));
assertTrue(goog.math.Size.equals(
new goog.math.Size(100, 100), bufferedVsm.getSize()));
}
function testWindowResize_previousSize() {
resize(100, 100);
timer.tick(RESIZE_DELAY);
assertEquals(1, resizeEventCount);
assertTrue(goog.math.Size.equals(
INITIAL_SIZE, bufferedVsm.getPreviousSize()));
assertTrue(goog.math.Size.equals(
new goog.math.Size(100, 100), bufferedVsm.getSize()));
resize(200, 200);
timer.tick(RESIZE_DELAY);
assertEquals(2, resizeEventCount);
assertTrue(goog.math.Size.equals(
new goog.math.Size(100, 100), bufferedVsm.getPreviousSize()));
assertTrue(goog.math.Size.equals(
new goog.math.Size(200, 200), bufferedVsm.getSize()));
}
function testWindowResize_Paused() {
assertEquals(
'No resize calls expected before resize events', 0, resizeEventCount);
resize(100, 100);
bufferedVsm.setPaused(true);
timer.tick(RESIZE_DELAY);
assertEquals(
'No resize expected when paused', 0, resizeEventCount);
bufferedVsm.setPaused(false);
timer.tick(RESIZE_DELAY);
assertEquals(
'No resize expected when unpaused', 0, resizeEventCount);
}
function resize(width, height) {
size = new goog.math.Size(width, height);
goog.testing.events.fireBrowserEvent(
new goog.testing.events.Event(
goog.events.EventType.RESIZE, viewportSizeMonitor));
}
</script>
</body>
</html>
|
