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// Copyright 2012 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.
/**
* @fileoverview Tests for goog.dom.BufferedViewportSizeMonitor.
*
*/
/** @suppress {extraProvide} */
goog.provide('goog.dom.BufferedViewportSizeMonitorTest');
goog.require('goog.dom.BufferedViewportSizeMonitor');
goog.require('goog.dom.ViewportSizeMonitor');
goog.require('goog.events');
goog.require('goog.events.EventType');
goog.require('goog.math.Size');
goog.require('goog.testing.MockClock');
goog.require('goog.testing.events');
goog.require('goog.testing.events.Event');
goog.require('goog.testing.jsunit');
goog.setTestOnly('goog.dom.BufferedViewportSizeMonitorTest');
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.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(
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(
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(
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(200, 200), bufferedVsm.getSize()));
}
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));
}
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