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<!DOCTYPE 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.
-->
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<!--
Author: dbk@google.com (David Barrett-Kahn)
-->
<title>Closure Unit Tests - goog.testing.events</title>
<script src="../../base.js"></script>
<script>
goog.require('goog.events.OnlineHandler.EventType');
goog.require('goog.testing.events.EventObserver');
goog.require('goog.testing.events.OnlineHandler');
goog.require('goog.testing.jsunit');
</script>
</head>
<body>
<script>
var handler;
var observer;
function tearDown() {
handler = null;
observer = null;
}
function testInitialValue() {
createHandler(true);
assertEquals(true, handler.isOnline());
createHandler(false);
assertEquals(false, handler.isOnline());
}
function testStateChange() {
createHandler(true);
assertEventCounts(0 /* expectedOnlineEvents */,
0 /* expectedOfflineEvents */);
// Expect no events.
handler.setOnline(true);
assertEquals(true, handler.isOnline());
assertEventCounts(0 /* expectedOnlineEvents */,
0 /* expectedOfflineEvents */);
// Expect one offline event.
handler.setOnline(false);
assertEquals(false, handler.isOnline());
assertEventCounts(0 /* expectedOnlineEvents */,
1 /* expectedOfflineEvents */);
// Expect no events.
handler.setOnline(false);
assertEquals(false, handler.isOnline());
assertEventCounts(0 /* expectedOnlineEvents */,
1 /* expectedOfflineEvents */);
// Expect one online event.
handler.setOnline(true);
assertEquals(true, handler.isOnline());
assertEventCounts(1 /* expectedOnlineEvents */,
1 /* expectedOfflineEvents */);
}
function createHandler(initialValue) {
handler = new goog.testing.events.OnlineHandler(initialValue);
observer = new goog.testing.events.EventObserver();
goog.events.listen(handler,
[goog.events.OnlineHandler.EventType.ONLINE,
goog.events.OnlineHandler.EventType.OFFLINE],
observer);
}
function assertEventCounts(expectedOnlineEvents, expectedOfflineEvents) {
assertEquals(expectedOnlineEvents,
observer.getEvents(goog.events.OnlineHandler.EventType.ONLINE).length);
assertEquals(expectedOfflineEvents,
observer.getEvents(goog.events.OnlineHandler.EventType.OFFLINE).length);
}
</script>
</body>
</html>
|
