Repository navigation
Expand file tree
/
Copy pathtest_event.py
More file actions
584 lines (386 loc) · 13.3 KB
/
Copy pathtest_event.py
File metadata and controls
584 lines (386 loc) · 13.3 KB
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
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
# -*- coding: utf-8 -*-
"""Test CLR event support."""
import pytest
from Python.Test import EventTest, EventArgsTest
from ._compat import range
from .utils import (CallableHandler, ClassMethodHandler, GenericHandler,
MultipleHandler, StaticMethodHandler, VarCallableHandler,
VariableArgsHandler)
def test_public_instance_event():
"""Test public instance events."""
ob = EventTest()
handler = GenericHandler()
assert handler.value is None
ob.PublicEvent += handler.handler
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 10
ob.PublicEvent -= handler.handler
def test_public_static_event():
"""Test public static events."""
handler = GenericHandler()
assert handler.value is None
EventTest.PublicStaticEvent += handler.handler
EventTest.OnPublicStaticEvent(EventArgsTest(10))
assert handler.value == 10
def test_protected_instance_event():
"""Test protected instance events."""
ob = EventTest()
handler = GenericHandler()
assert handler.value is None
ob.ProtectedEvent += handler.handler
ob.OnProtectedEvent(EventArgsTest(10))
assert handler.value == 10
ob.ProtectedEvent -= handler.handler
def test_protected_static_event():
"""Test protected static events."""
handler = GenericHandler()
assert handler.value is None
EventTest.ProtectedStaticEvent += handler.handler
EventTest.OnProtectedStaticEvent(EventArgsTest(10))
assert handler.value == 10
EventTest.ProtectedStaticEvent -= handler.handler
def test_internal_events():
"""Test internal events."""
with pytest.raises(AttributeError):
_ = EventTest().InternalEvent
with pytest.raises(AttributeError):
_ = EventTest().InternalStaticEvent
with pytest.raises(AttributeError):
_ = EventTest.InternalStaticEvent
def test_private_events():
"""Test private events."""
with pytest.raises(AttributeError):
_ = EventTest().PrivateEvent
with pytest.raises(AttributeError):
_ = EventTest().PrivateStaticEvent
with pytest.raises(AttributeError):
_ = EventTest.PrivateStaticEvent
def test_multicast_event():
"""Test multicast events."""
ob = EventTest()
handler1 = GenericHandler()
handler2 = GenericHandler()
handler3 = GenericHandler()
ob.PublicEvent += handler1.handler
ob.PublicEvent += handler2.handler
ob.PublicEvent += handler3.handler
ob.OnPublicEvent(EventArgsTest(10))
assert handler1.value == 10
assert handler2.value == 10
assert handler3.value == 10
ob.OnPublicEvent(EventArgsTest(20))
assert handler1.value == 20
assert handler2.value == 20
assert handler3.value == 20
ob.PublicEvent -= handler1.handler
ob.PublicEvent -= handler2.handler
ob.PublicEvent -= handler3.handler
def test_instance_method_handler():
"""Test instance method handlers."""
ob = EventTest()
handler = GenericHandler()
ob.PublicEvent += handler.handler
assert handler.value is None
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 10
ob.PublicEvent -= handler.handler
assert handler.value == 10
ob.OnPublicEvent(EventArgsTest(20))
assert handler.value == 10
def test_var_args_instance_method_handler():
"""Test vararg instance method handlers."""
ob = EventTest()
handler = VariableArgsHandler()
ob.PublicEvent += handler.handler
assert handler.value is None
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 10
ob.PublicEvent -= handler.handler
assert handler.value == 10
ob.OnPublicEvent(EventArgsTest(20))
assert handler.value == 10
def test_callableob_handler():
"""Test callable ob handlers."""
ob = EventTest()
handler = CallableHandler()
ob.PublicEvent += handler
assert handler.value is None
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 10
ob.PublicEvent -= handler
assert handler.value == 10
ob.OnPublicEvent(EventArgsTest(20))
assert handler.value == 10
def test_var_args_callable_handler():
"""Test varargs callable handlers."""
ob = EventTest()
handler = VarCallableHandler()
ob.PublicEvent += handler
assert handler.value is None
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 10
ob.PublicEvent -= handler
assert handler.value == 10
ob.OnPublicEvent(EventArgsTest(20))
assert handler.value == 10
def test_static_method_handler():
"""Test static method handlers."""
ob = EventTest()
handler = StaticMethodHandler()
StaticMethodHandler.value = None
ob.PublicEvent += handler.handler
assert handler.value is None
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 10
ob.PublicEvent -= handler.handler
assert handler.value == 10
ob.OnPublicEvent(EventArgsTest(20))
assert handler.value == 10
def test_class_method_handler():
"""Test class method handlers."""
ob = EventTest()
handler = ClassMethodHandler()
ClassMethodHandler.value = None
ob.PublicEvent += handler.handler
assert handler.value is None
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 10
ob.PublicEvent -= handler.handler
assert handler.value == 10
ob.OnPublicEvent(EventArgsTest(20))
assert handler.value == 10
def test_managed_instance_method_handler():
"""Test managed instance method handlers."""
ob = EventTest()
ob.PublicEvent += ob.GenericHandler
assert ob.value == 0
ob.OnPublicEvent(EventArgsTest(10))
assert ob.value == 10
ob.PublicEvent -= ob.GenericHandler
assert ob.value == 10
ob.OnPublicEvent(EventArgsTest(20))
assert ob.value == 10
def test_managed_static_method_handler():
"""Test managed static method handlers."""
ob = EventTest()
EventTest.s_value = 0
ob.PublicEvent += ob.StaticHandler
assert EventTest.s_value == 0
ob.OnPublicEvent(EventArgsTest(10))
assert EventTest.s_value == 10
ob.PublicEvent -= ob.StaticHandler
assert EventTest.s_value == 10
ob.OnPublicEvent(EventArgsTest(20))
assert EventTest.s_value == 10
def test_unbound_method_handler():
"""Test failure mode for unbound method handlers."""
ob = EventTest()
ob.PublicEvent += GenericHandler.handler
with pytest.raises(TypeError):
ob.OnPublicEvent(EventArgsTest(10))
ob.PublicEvent -= GenericHandler.handler
def test_function_handler():
"""Test function handlers."""
ob = EventTest()
dict_ = {'value': None}
def handler(sender, args, dict_=dict_):
dict_['value'] = args.value
ob.PublicEvent += handler
assert dict_['value'] is None
ob.OnPublicEvent(EventArgsTest(10))
assert dict_['value'] == 10
ob.PublicEvent -= handler
assert dict_['value'] == 10
ob.OnPublicEvent(EventArgsTest(20))
assert dict_['value'] == 10
def test_add_non_callable_handler():
"""Test handling of attempts to add non-callable handlers."""
with pytest.raises(TypeError):
ob = EventTest()
ob.PublicEvent += 10
with pytest.raises(TypeError):
ob = EventTest()
ob.PublicEvent += "spam"
with pytest.raises(TypeError):
class Spam(object):
pass
ob = EventTest()
ob.PublicEvent += Spam()
def test_remove_multiple_handlers():
"""Test removing multiple instances of the same handler."""
ob = EventTest()
handler = MultipleHandler()
h1 = handler.handler
ob.PublicEvent += h1
h2 = handler.handler
ob.PublicEvent += h2
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 20
ob.PublicEvent -= h1
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 30
ob.PublicEvent -= h2
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 30
# try again, removing in a different order.
ob = EventTest()
handler = MultipleHandler()
h1 = handler.handler
ob.PublicEvent += h1
h2 = handler.handler
ob.PublicEvent += h2
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 20
ob.PublicEvent -= h2
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 30
ob.PublicEvent -= h1
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 30
def test_remove_multiple_static_handlers():
"""Test removing multiple instances of a static handler."""
ob = EventTest()
handler = MultipleHandler()
h1 = handler.handler
ob.PublicStaticEvent += h1
h2 = handler.handler
ob.PublicStaticEvent += h2
ob.OnPublicStaticEvent(EventArgsTest(10))
assert handler.value == 20
ob.PublicStaticEvent -= h1
ob.OnPublicStaticEvent(EventArgsTest(10))
assert handler.value == 30
ob.PublicStaticEvent -= h2
ob.OnPublicStaticEvent(EventArgsTest(10))
assert handler.value == 30
# try again, removing in a different order.
ob = EventTest()
handler = MultipleHandler()
h1 = handler.handler
ob.PublicStaticEvent += h1
h2 = handler.handler
ob.PublicStaticEvent += h2
ob.OnPublicStaticEvent(EventArgsTest(10))
assert handler.value == 20
ob.PublicStaticEvent -= h2
ob.OnPublicStaticEvent(EventArgsTest(10))
assert handler.value == 30
ob.PublicStaticEvent -= h1
ob.OnPublicStaticEvent(EventArgsTest(10))
assert handler.value == 30
def test_random_multiple_handlers():
"""Test random subscribe / unsubscribe of the same handlers."""
import random
ob = EventTest()
handler = MultipleHandler()
handler2 = MultipleHandler()
ob.PublicEvent += handler2.handler
ob.PublicEvent += handler2.handler
handlers = []
for _ in range(30):
method = handler.handler
ob.PublicEvent += method
handlers.append(method)
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 300
assert handler2.value == 20
handler.value = 0
handler2.value = 0
for i in range(30):
item = random.choice(handlers)
handlers.remove(item)
ob.PublicEvent -= item
handler.value = 0
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == (len(handlers) * 10)
assert handler2.value == ((i + 1) * 20)
handler2.value = 0
ob.OnPublicEvent(EventArgsTest(10))
assert handler2.value == 20
ob.PublicEvent -= handler2.handler
handler2.value = 0
ob.OnPublicEvent(EventArgsTest(10))
assert handler2.value == 10
ob.PublicEvent -= handler2.handler
handler2.value = 0
ob.OnPublicEvent(EventArgsTest(10))
assert handler2.value == 0
def test_remove_internal_call_handler():
"""Test remove on an event sink implemented w/internalcall."""
ob = EventTest()
def h(sender, args):
pass
ob.PublicEvent += h
ob.PublicEvent -= h
def test_remove_unknown_handler():
"""Test removing an event handler that was never added."""
with pytest.raises(ValueError):
ob = EventTest()
handler = GenericHandler()
ob.PublicEvent -= handler.handler
def test_handler_callback_failure():
"""Test failure mode for inappropriate handlers."""
class BadHandler(object):
def handler(self, one):
return 'too many'
ob = EventTest()
handler = BadHandler()
with pytest.raises(TypeError):
ob.PublicEvent += handler.handler
ob.OnPublicEvent(EventArgsTest(10))
ob.PublicEvent -= handler.handler
class BadHandler(object):
def handler(self, one, two, three, four, five):
return 'not enough'
ob = EventTest()
handler = BadHandler()
with pytest.raises(TypeError):
ob.PublicEvent += handler.handler
ob.OnPublicEvent(EventArgsTest(10))
ob.PublicEvent -= handler.handler
def test_incorrect_invokation():
"""Test incorrect invocation of events."""
ob = EventTest()
handler = GenericHandler()
ob.PublicEvent += handler.handler
with pytest.raises(TypeError):
ob.OnPublicEvent()
with pytest.raises(TypeError):
ob.OnPublicEvent(32)
ob.PublicEvent -= handler.handler
def test_explicit_cls_event_registration():
"""Test explicit CLS event registration."""
from Python.Test import EventHandlerTest
ob = EventTest()
handler = GenericHandler()
delegate = EventHandlerTest(handler.handler)
ob.add_PublicEvent(delegate)
assert handler.value is None
ob.OnPublicEvent(EventArgsTest(10))
assert handler.value == 10
ob.remove_PublicEvent(delegate)
assert handler.value == 10
ob.OnPublicEvent(EventArgsTest(20))
assert handler.value == 10
def test_implicit_cls_event_registration():
"""Test implicit CLS event registration."""
with pytest.raises(TypeError):
ob = EventTest()
handler = GenericHandler()
ob.add_PublicEvent(handler.handler)
def test_event_descriptor_abuse():
"""Test event descriptor abuse."""
with pytest.raises(TypeError):
del EventTest.PublicEvent
with pytest.raises(TypeError):
del EventTest.__dict__['PublicEvent']
desc = EventTest.__dict__['PublicEvent']
with pytest.raises(TypeError):
desc.__get__(0, 0)
with pytest.raises(TypeError):
desc.__set__(0, 0)
with pytest.raises(TypeError):
ob = EventTest()
ob.PublicEvent = 0
with pytest.raises(TypeError):
EventTest.PublicStaticEvent = 0