1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
|
<!DOCTYPE html>
<html>
<!--
Copyright 2006 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.events</title>
<script src="../base.js"></script>
<script>
goog.require('goog.debug.EntryPointMonitor');
goog.require('goog.debug.ErrorHandler');
goog.require('goog.debug.ErrorHandler.ProtectedFunctionError');
goog.require('goog.events');
goog.require('goog.events.EventTarget');
goog.require('goog.events.EventType');
goog.require('goog.functions');
goog.require('goog.testing.PropertyReplacer');
goog.require('goog.testing.jsunit');
goog.require('goog.testing.recordFunction');
</script>
</head>
<body>
<script>
var originalHandleBrowserEvent = goog.events.handleBrowserEvent_;
var propertyReplacer;
function setUp() {
propertyReplacer = new goog.testing.PropertyReplacer();
}
function tearDown() {
goog.events.handleBrowserEvent_ = originalHandleBrowserEvent;
goog.events.removeAll();
propertyReplacer.reset();
}
function testProtectBrowserEventEntryPoint() {
var errorHandlerCallbackCalled = false;
var errorHandler = new goog.debug.ErrorHandler(function() {
errorHandlerCallbackCalled = true;
});
goog.events.protectBrowserEventEntryPoint(errorHandler);
var protectedHandleBrowserEvent_ = goog.events.handleBrowserEvent_;
goog.events.handleBrowserEvent_ = function(evt) {
try {
protectedHandleBrowserEvent_(evt);
} catch (e) {
assertTrue(
e instanceof goog.debug.ErrorHandler.ProtectedFunctionError);
}
};
var bodyEl = document.body;
goog.events.listen(bodyEl, goog.events.EventType.CLICK, function(e){
throw Error;
});
triggerClickEvent(bodyEl);
assertTrue('Error handler callback should be called.',
errorHandlerCallbackCalled);
}
function triggerClickEvent(element) {
if (document.createEvent) {
var event = document.createEvent("MouseEvents");
event.initMouseEvent("click", true, true, window,
0, 0, 0, 0, 0, false, false, false, false, 0, null);
element.dispatchEvent(event);
} else {
element.fireEvent('onclick', element.ownerDocument.createEventObject());
}
}
function testSelfRemove() {
var et1 = new goog.events.EventTarget();
var callback = function() {
// This listener removes itself during event dispatching, so it
// is marked as 'removed' but not actually removed until after event
// dispatching ends.
goog.events.removeAll(et1, 'click');
// Test that goog.events.getListener ignores events marked as 'removed'.
assertNull(goog.events.getListener(et1, 'click', callback));
};
var key = goog.events.listen(et1, 'click', callback);
goog.events.dispatchEvent(et1, 'click');
}
function testHasListener() {
var div = document.createElement('div');
assertFalse(goog.events.hasListener(div));
var key = goog.events.listen(div, 'click', function(){});
assertTrue(goog.events.hasListener(div));
assertTrue(goog.events.hasListener(div, 'click'));
assertTrue(goog.events.hasListener(div, 'click', false));
assertTrue(goog.events.hasListener(div, undefined, false));
assertFalse(goog.events.hasListener(div, 'click', true));
assertFalse(goog.events.hasListener(div, undefined, true));
assertFalse(goog.events.hasListener(div, 'mouseup'));
// Test that hasListener returns false when all listeners are removed.
goog.events.unlistenByKey(key);
assertFalse(goog.events.hasListener(div));
}
function testHasListenerWithEventTarget() {
var et = new goog.events.EventTarget();
assertFalse(goog.events.hasListener(et));
function callback() {};
goog.events.listen(et, 'test', callback, true);
assertTrue(goog.events.hasListener(et));
assertTrue(goog.events.hasListener(et, 'test'));
assertTrue(goog.events.hasListener(et, 'test', true));
assertTrue(goog.events.hasListener(et, undefined, true));
assertFalse(goog.events.hasListener(et, 'click'));
assertFalse(goog.events.hasListener(et, 'test', false));
goog.events.unlisten(et, 'test', callback, true);
assertFalse(goog.events.hasListener(et));
}
function testHasListenerWithMultipleTargets() {
var et1 = new goog.events.EventTarget();
var et2 = new goog.events.EventTarget();
function callback() {};
goog.events.listen(et1, 'test1', callback, true);
goog.events.listen(et2, 'test2', callback, true);
assertTrue(goog.events.hasListener(et1));
assertTrue(goog.events.hasListener(et2));
assertTrue(goog.events.hasListener(et1, 'test1'));
assertTrue(goog.events.hasListener(et2, 'test2'));
assertFalse(goog.events.hasListener(et1, 'et2'));
assertFalse(goog.events.hasListener(et2, 'et1'));
goog.events.removeAll(et1);
goog.events.removeAll(et2);
}
function testBubbleSingle() {
var et1 = new goog.events.EventTarget();
var et2 = new goog.events.EventTarget();
var et3 = new goog.events.EventTarget();
et1.setParentEventTarget(et2);
et2.setParentEventTarget(et3);
var count = 0;
function callback() {
count++;
}
goog.events.listen(et3, 'test', callback, false);
et1.dispatchEvent('test');
assertEquals(1, count);
goog.events.removeAll(et1);
goog.events.removeAll(et2);
goog.events.removeAll(et3);
}
function testBubbleShortCircuit() {
var et1 = new goog.events.EventTarget();
var et2 = new goog.events.EventTarget();
et1.setParentEventTarget(et2);
et2.getParentEventTarget = function() {
fail('This should never be called');
};
var count = 0;
function callback() {
count++;
}
goog.events.listen(et1, 'test', callback, false);
et1.dispatchEvent('test');
assertEquals(1, count);
goog.events.removeAll(et1);
goog.events.removeAll(et2);
}
function testCaptureSingle() {
var et1 = new goog.events.EventTarget();
var et2 = new goog.events.EventTarget();
var et3 = new goog.events.EventTarget();
et1.setParentEventTarget(et2);
et2.setParentEventTarget(et3);
var count = 0;
function callback() {
count++;
}
goog.events.listen(et3, 'test', callback, true);
et1.dispatchEvent('test');
assertEquals(1, count);
goog.events.removeAll(et1);
goog.events.removeAll(et2);
goog.events.removeAll(et3);
}
function testCaptureAndBubble() {
var et1 = new goog.events.EventTarget();
var et2 = new goog.events.EventTarget();
var et3 = new goog.events.EventTarget();
et1.setParentEventTarget(et2);
et2.setParentEventTarget(et3);
var count = 0;
function callbackCapture1() {
count++;
assertEquals(3, count);
}
function callbackBubble1() {
count++;
assertEquals(4, count);
}
function callbackCapture2() {
count++;
assertEquals(2, count);
}
function callbackBubble2() {
count++;
assertEquals(5, count);
}
function callbackCapture3() {
count++;
assertEquals(1, count);
}
function callbackBubble3() {
count++;
assertEquals(6, count);
}
goog.events.listen(et1, 'test', callbackCapture1, true);
goog.events.listen(et1, 'test', callbackBubble1, false);
goog.events.listen(et2, 'test', callbackCapture2, true);
goog.events.listen(et2, 'test', callbackBubble2, false);
goog.events.listen(et3, 'test', callbackCapture3, true);
goog.events.listen(et3, 'test', callbackBubble3, false);
et1.dispatchEvent('test');
assertEquals(6, count);
goog.events.removeAll(et1);
goog.events.removeAll(et2);
goog.events.removeAll(et3);
}
function testCapturingRemovesBubblingListener() {
var et1 = new goog.events.EventTarget();
var bubbleCount = 0;
function callbackBubble() {
bubbleCount++;
}
var captureCount = 0;
function callbackCapture() {
captureCount++;
goog.events.removeAll(et1);
}
goog.events.listen(et1, 'test', callbackCapture, true);
goog.events.listen(et1, 'test', callbackBubble, false);
et1.dispatchEvent('test');
assertEquals(1, captureCount);
assertEquals(0, bubbleCount);
}
function dispatchClick(target) {
if (target.click) {
target.click();
} else {
var e = document.createEvent('MouseEvents');
e.initMouseEvent('click', true, true, window, 0, 0, 0, 0, 0, false,
false, false, false, 0, null);
target.dispatchEvent(e);
}
}
function testHandleBrowserEventBubblingListener() {
var count = 0;
var body = document.body;
goog.events.listen(body, 'click', function() {
count++;
});
dispatchClick(body);
assertEquals(1, count);
}
function testHandleBrowserEventCapturingListener() {
var count = 0;
var body = document.body;
goog.events.listen(body, 'click', function() {
count++;
}, true);
dispatchClick(body);
assertEquals(1, count);
}
function testHandleBrowserEventCapturingAndBubblingListener() {
var count = 1;
var body = document.body;
goog.events.listen(body, 'click', function() {
count += 3;
}, true);
goog.events.listen(body, 'click', function() {
count *= 5;
}, false);
dispatchClick(body);
assertEquals(20, count);
}
function testHandleBrowserEventCapturingRemovesBubblingListener() {
var body = document.body;
var bubbleCount = 0;
function callbackBubble() {
bubbleCount++;
}
var captureCount = 0;
function callbackCapture() {
captureCount++;
goog.events.removeAll(body);
}
goog.events.listen(body, 'click', callbackCapture, true);
goog.events.listen(body, 'click', callbackBubble, false);
dispatchClick(body);
assertEquals(1, captureCount);
assertEquals(0, bubbleCount);
}
function testHandleEventPropagationOnParentElement() {
var count = 1;
goog.events.listen(document.documentElement, 'click',
function() {
count += 3;
}, true);
goog.events.listen(document.documentElement, 'click', function() {
count *= 5;
}, false);
dispatchClick(document.body);
assertEquals(20, count);
}
function testEntryPointRegistry() {
var monitor = new goog.debug.EntryPointMonitor();
var replacement = function() {};
monitor.wrap = goog.testing.recordFunction(
goog.functions.constant(replacement));
goog.debug.entryPointRegistry.monitorAll(monitor);
assertTrue(monitor.wrap.getCallCount() >= 1);
assertEquals(replacement, goog.events.handleBrowserEvent_);
}
// Fixes bug http://b/6434926
function testListenOnceHandlerDispatchCausingInfiniteLoop() {
var target = new goog.events.EventTarget();
var handleFoo = goog.testing.recordFunction(function() {
target.dispatchEvent('foo');
});
goog.events.listenOnce(target, 'foo', handleFoo);
target.dispatchEvent('foo');
assertEquals('Handler should be called only once.',
1, handleFoo.getCallCount());
}
function testCreationStack() {
if (!new Error().stack)
return;
propertyReplacer.replace(goog.events.Listener, 'ENABLE_MONITORING', true);
var div = document.createElement('div');
var key = goog.events.listen(
div, goog.events.EventType.CLICK, goog.nullFunction);
var listenerStack = goog.events.listeners_[key].creationStack;
// Check that the name of this test function occurs in the stack trace.
assertContains('testCreationStack', listenerStack);
goog.events.unlistenByKey(key);
}
/**
* The behavior of goog.events when a UID changes is undefined.
* We just want to make sure we don't throw an exception.
*/
function testUidDisappearanceJsTargets() {
var target = new goog.events.EventTarget();
var listener = goog.testing.recordFunction();
goog.events.listenOnce(target, 'foo', listener, false);
goog.removeUid(target);
target.dispatchEvent('foo');
assertEquals(0, listener.getCallCount());
}
/**
* The behavior of goog.events when a UID changes is undefined.
* We just want to make sure we don't throw an exception.
*/
function testUidDisappearanceBrowserTargets() {
var listener = goog.testing.recordFunction();
var body = document.body;
goog.events.listenOnce(body, 'click', listener);
goog.removeUid(body);
dispatchClick(body);
assertEquals(1, listener.getCallCount());
// Make sure that dispatching again doesn't fire the listener.
dispatchClick(body);
assertEquals(1, listener.getCallCount());
}
</script>
</body>
</html>
|
