Source

pypy / lib-python / 2.7 / test / test_class.py

  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
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
"Test the functionality of Python classes implementing operators."

import unittest

from test import test_support

testmeths = [

# Binary operations
    "add",
    "radd",
    "sub",
    "rsub",
    "mul",
    "rmul",
    "div",
    "rdiv",
    "mod",
    "rmod",
    "divmod",
    "rdivmod",
    "pow",
    "rpow",
    "rshift",
    "rrshift",
    "lshift",
    "rlshift",
    "and",
    "rand",
    "or",
    "ror",
    "xor",
    "rxor",

# List/dict operations
    "contains",
    "getitem",
    "getslice",
    "setitem",
    "setslice",
    "delitem",
    "delslice",

# Unary operations
    "neg",
    "pos",
    "abs",

# generic operations
    "init",
    ]

# These need to return something other than None
#    "coerce",
#    "hash",
#    "str",
#    "repr",
#    "int",
#    "long",
#    "float",
#    "oct",
#    "hex",

# These are separate because they can influence the test of other methods.
#    "getattr",
#    "setattr",
#    "delattr",

callLst = []
def trackCall(f):
    def track(*args, **kwargs):
        callLst.append((f.__name__, args))
        return f(*args, **kwargs)
    return track

class AllTests:
    trackCall = trackCall

    @trackCall
    def __coerce__(self, *args):
        return (self,) + args

    @trackCall
    def __hash__(self, *args):
        return hash(id(self))

    @trackCall
    def __str__(self, *args):
        return "AllTests"

    @trackCall
    def __repr__(self, *args):
        return "AllTests"

    @trackCall
    def __int__(self, *args):
        return 1

    @trackCall
    def __float__(self, *args):
        return 1.0

    @trackCall
    def __long__(self, *args):
        return 1L

    @trackCall
    def __oct__(self, *args):
        return '01'

    @trackCall
    def __hex__(self, *args):
        return '0x1'

    @trackCall
    def __cmp__(self, *args):
        return 0

# Synthesize all the other AllTests methods from the names in testmeths.

method_template = """\
@trackCall
def __%(method)s__(self, *args):
    pass
"""

for method in testmeths:
    exec method_template % locals() in AllTests.__dict__

del method, method_template

class ClassTests(unittest.TestCase):
    def setUp(self):
        callLst[:] = []

    def assertCallStack(self, expected_calls):
        actualCallList = callLst[:]  # need to copy because the comparison below will add
                                     # additional calls to callLst
        if expected_calls != actualCallList:
            self.fail("Expected call list:\n  %s\ndoes not match actual call list\n  %s" %
                      (expected_calls, actualCallList))

    def testInit(self):
        foo = AllTests()
        self.assertCallStack([("__init__", (foo,))])

    def testBinaryOps(self):
        testme = AllTests()
        # Binary operations

        callLst[:] = []
        testme + 1
        self.assertCallStack([("__coerce__", (testme, 1)), ("__add__", (testme, 1))])

        callLst[:] = []
        1 + testme
        self.assertCallStack([("__coerce__", (testme, 1)), ("__radd__", (testme, 1))])

        callLst[:] = []
        testme - 1
        self.assertCallStack([("__coerce__", (testme, 1)), ("__sub__", (testme, 1))])

        callLst[:] = []
        1 - testme
        self.assertCallStack([("__coerce__", (testme, 1)), ("__rsub__", (testme, 1))])

        callLst[:] = []
        testme * 1
        self.assertCallStack([("__coerce__", (testme, 1)), ("__mul__", (testme, 1))])

        callLst[:] = []
        1 * testme
        self.assertCallStack([("__coerce__", (testme, 1)), ("__rmul__", (testme, 1))])

        if 1/2 == 0:
            callLst[:] = []
            testme / 1
            self.assertCallStack([("__coerce__", (testme, 1)), ("__div__", (testme, 1))])


            callLst[:] = []
            1 / testme
            self.assertCallStack([("__coerce__", (testme, 1)), ("__rdiv__", (testme, 1))])

        callLst[:] = []
        testme % 1
        self.assertCallStack([("__coerce__", (testme, 1)), ("__mod__", (testme, 1))])

        callLst[:] = []
        1 % testme
        self.assertCallStack([("__coerce__", (testme, 1)), ("__rmod__", (testme, 1))])


        callLst[:] = []
        divmod(testme,1)
        self.assertCallStack([("__coerce__", (testme, 1)), ("__divmod__", (testme, 1))])

        callLst[:] = []
        divmod(1, testme)
        self.assertCallStack([("__coerce__", (testme, 1)), ("__rdivmod__", (testme, 1))])

        callLst[:] = []
        testme ** 1
        self.assertCallStack([("__coerce__", (testme, 1)), ("__pow__", (testme, 1))])

        callLst[:] = []
        1 ** testme
        self.assertCallStack([("__coerce__", (testme, 1)), ("__rpow__", (testme, 1))])

        callLst[:] = []
        testme >> 1
        self.assertCallStack([("__coerce__", (testme, 1)), ("__rshift__", (testme, 1))])

        callLst[:] = []
        1 >> testme
        self.assertCallStack([("__coerce__", (testme, 1)), ("__rrshift__", (testme, 1))])

        callLst[:] = []
        testme << 1
        self.assertCallStack([("__coerce__", (testme, 1)), ("__lshift__", (testme, 1))])

        callLst[:] = []
        1 << testme
        self.assertCallStack([("__coerce__", (testme, 1)), ("__rlshift__", (testme, 1))])

        callLst[:] = []
        testme & 1
        self.assertCallStack([("__coerce__", (testme, 1)), ("__and__", (testme, 1))])

        callLst[:] = []
        1 & testme
        self.assertCallStack([("__coerce__", (testme, 1)), ("__rand__", (testme, 1))])

        callLst[:] = []
        testme | 1
        self.assertCallStack([("__coerce__", (testme, 1)), ("__or__", (testme, 1))])

        callLst[:] = []
        1 | testme
        self.assertCallStack([("__coerce__", (testme, 1)), ("__ror__", (testme, 1))])

        callLst[:] = []
        testme ^ 1
        self.assertCallStack([("__coerce__", (testme, 1)), ("__xor__", (testme, 1))])

        callLst[:] = []
        1 ^ testme
        self.assertCallStack([("__coerce__", (testme, 1)), ("__rxor__", (testme, 1))])

    def testListAndDictOps(self):
        testme = AllTests()

        # List/dict operations

        class Empty: pass

        try:
            1 in Empty()
            self.fail('failed, should have raised TypeError')
        except TypeError:
            pass

        callLst[:] = []
        1 in testme
        self.assertCallStack([('__contains__', (testme, 1))])

        callLst[:] = []
        testme[1]
        self.assertCallStack([('__getitem__', (testme, 1))])

        callLst[:] = []
        testme[1] = 1
        self.assertCallStack([('__setitem__', (testme, 1, 1))])

        callLst[:] = []
        del testme[1]
        self.assertCallStack([('__delitem__', (testme, 1))])

        callLst[:] = []
        testme[:42]
        self.assertCallStack([('__getslice__', (testme, 0, 42))])

        callLst[:] = []
        testme[:42] = "The Answer"
        self.assertCallStack([('__setslice__', (testme, 0, 42, "The Answer"))])

        callLst[:] = []
        del testme[:42]
        self.assertCallStack([('__delslice__', (testme, 0, 42))])

        callLst[:] = []
        testme[2:1024:10]
        self.assertCallStack([('__getitem__', (testme, slice(2, 1024, 10)))])

        callLst[:] = []
        testme[2:1024:10] = "A lot"
        self.assertCallStack([('__setitem__', (testme, slice(2, 1024, 10),
                                                                    "A lot"))])
        callLst[:] = []
        del testme[2:1024:10]
        self.assertCallStack([('__delitem__', (testme, slice(2, 1024, 10)))])

        callLst[:] = []
        testme[:42, ..., :24:, 24, 100]
        self.assertCallStack([('__getitem__', (testme, (slice(None, 42, None),
                                                        Ellipsis,
                                                        slice(None, 24, None),
                                                        24, 100)))])
        callLst[:] = []
        testme[:42, ..., :24:, 24, 100] = "Strange"
        self.assertCallStack([('__setitem__', (testme, (slice(None, 42, None),
                                                        Ellipsis,
                                                        slice(None, 24, None),
                                                        24, 100), "Strange"))])
        callLst[:] = []
        del testme[:42, ..., :24:, 24, 100]
        self.assertCallStack([('__delitem__', (testme, (slice(None, 42, None),
                                                        Ellipsis,
                                                        slice(None, 24, None),
                                                        24, 100)))])

        # Now remove the slice hooks to see if converting normal slices to
        #  slice object works.

        getslice = AllTests.__getslice__
        del AllTests.__getslice__
        setslice = AllTests.__setslice__
        del AllTests.__setslice__
        delslice = AllTests.__delslice__
        del AllTests.__delslice__

        # XXX when using new-style classes the slice testme[:42] produces
        #  slice(None, 42, None) instead of slice(0, 42, None). py3k will have
        #  to change this test.
        callLst[:] = []
        testme[:42]
        self.assertCallStack([('__getitem__', (testme, slice(0, 42, None)))])

        callLst[:] = []
        testme[:42] = "The Answer"
        self.assertCallStack([('__setitem__', (testme, slice(0, 42, None),
                                                                "The Answer"))])
        callLst[:] = []
        del testme[:42]
        self.assertCallStack([('__delitem__', (testme, slice(0, 42, None)))])

        # Restore the slice methods, or the tests will fail with regrtest -R.
        AllTests.__getslice__ = getslice
        AllTests.__setslice__ = setslice
        AllTests.__delslice__ = delslice


    @test_support.cpython_only
    def testDelItem(self):
        class A:
            ok = False
            def __delitem__(self, key):
                self.ok = True
        a = A()
        # Subtle: we need to call PySequence_SetItem, not PyMapping_SetItem.
        from _testcapi import sequence_delitem
        sequence_delitem(a, 2)
        self.assertTrue(a.ok)


    def testUnaryOps(self):
        testme = AllTests()

        callLst[:] = []
        -testme
        self.assertCallStack([('__neg__', (testme,))])
        callLst[:] = []
        +testme
        self.assertCallStack([('__pos__', (testme,))])
        callLst[:] = []
        abs(testme)
        self.assertCallStack([('__abs__', (testme,))])
        callLst[:] = []
        int(testme)
        self.assertCallStack([('__int__', (testme,))])
        callLst[:] = []
        long(testme)
        self.assertCallStack([('__long__', (testme,))])
        callLst[:] = []
        float(testme)
        self.assertCallStack([('__float__', (testme,))])
        callLst[:] = []
        oct(testme)
        self.assertCallStack([('__oct__', (testme,))])
        callLst[:] = []
        hex(testme)
        self.assertCallStack([('__hex__', (testme,))])


    def testMisc(self):
        testme = AllTests()

        callLst[:] = []
        hash(testme)
        self.assertCallStack([('__hash__', (testme,))])

        callLst[:] = []
        repr(testme)
        self.assertCallStack([('__repr__', (testme,))])

        callLst[:] = []
        str(testme)
        self.assertCallStack([('__str__', (testme,))])

        callLst[:] = []
        testme == 1
        self.assertCallStack([("__coerce__", (testme, 1)), ('__cmp__', (testme, 1))])

        callLst[:] = []
        testme < 1
        self.assertCallStack([("__coerce__", (testme, 1)), ('__cmp__', (testme, 1))])

        callLst[:] = []
        testme > 1
        self.assertCallStack([("__coerce__", (testme, 1)), ('__cmp__', (testme, 1))])

        callLst[:] = []
        eval('testme <> 1')  # XXX kill this in py3k
        self.assertCallStack([("__coerce__", (testme, 1)), ('__cmp__', (testme, 1))])

        callLst[:] = []
        testme != 1
        self.assertCallStack([("__coerce__", (testme, 1)), ('__cmp__', (testme, 1))])

        callLst[:] = []
        1 == testme
        self.assertCallStack([("__coerce__", (testme, 1)), ('__cmp__', (1, testme))])

        callLst[:] = []
        1 < testme
        self.assertCallStack([("__coerce__", (testme, 1)), ('__cmp__', (1, testme))])

        callLst[:] = []
        1 > testme
        self.assertCallStack([("__coerce__", (testme, 1)), ('__cmp__', (1, testme))])

        callLst[:] = []
        eval('1 <> testme')
        self.assertCallStack([("__coerce__", (testme, 1)), ('__cmp__', (1, testme))])

        callLst[:] = []
        1 != testme
        self.assertCallStack([("__coerce__", (testme, 1)), ('__cmp__', (1, testme))])


    def testGetSetAndDel(self):
        # Interfering tests
        class ExtraTests(AllTests):
            @trackCall
            def __getattr__(self, *args):
                return "SomeVal"

            @trackCall
            def __setattr__(self, *args):
                pass

            @trackCall
            def __delattr__(self, *args):
                pass

        testme = ExtraTests()

        callLst[:] = []
        testme.spam
        self.assertCallStack([('__getattr__', (testme, "spam"))])

        callLst[:] = []
        testme.eggs = "spam, spam, spam and ham"
        self.assertCallStack([('__setattr__', (testme, "eggs",
                                               "spam, spam, spam and ham"))])

        callLst[:] = []
        del testme.cardinal
        self.assertCallStack([('__delattr__', (testme, "cardinal"))])

    def testDel(self):
        x = []

        class DelTest:
            def __del__(self):
                x.append("crab people, crab people")
        testme = DelTest()
        del testme
        import gc
        gc.collect()
        self.assertEqual(["crab people, crab people"], x)

    def testBadTypeReturned(self):
        # return values of some method are type-checked
        class BadTypeClass:
            def __int__(self):
                return None
            __float__ = __int__
            __long__ = __int__
            __str__ = __int__
            __repr__ = __int__
            __oct__ = __int__
            __hex__ = __int__

        for f in [int, float, long, str, repr, oct, hex]:
            self.assertRaises(TypeError, f, BadTypeClass())

    def testMixIntsAndLongs(self):
        # mixing up ints and longs is okay
        class IntLongMixClass:
            @trackCall
            def __int__(self):
                return 42L

            @trackCall
            def __long__(self):
                return 64

        mixIntAndLong = IntLongMixClass()

        callLst[:] = []
        as_int = int(mixIntAndLong)
        self.assertEqual(type(as_int), long)
        self.assertEqual(as_int, 42L)
        self.assertCallStack([('__int__', (mixIntAndLong,))])

        callLst[:] = []
        as_long = long(mixIntAndLong)
        self.assertEqual(type(as_long), long)
        self.assertEqual(as_long, 64)
        self.assertCallStack([('__long__', (mixIntAndLong,))])

    def testHashStuff(self):
        # Test correct errors from hash() on objects with comparisons but
        #  no __hash__

        class C0:
            pass

        hash(C0()) # This should work; the next two should raise TypeError

        class C1:
            def __cmp__(self, other): return 0

        self.assertRaises(TypeError, hash, C1())

        class C2:
            def __eq__(self, other): return 1

        self.assertRaises(TypeError, hash, C2())


    def testSFBug532646(self):
        # Test for SF bug 532646

        class A:
            pass
        A.__call__ = A()
        a = A()

        try:
            a() # This should not segfault
        except RuntimeError:
            pass
        else:
            self.fail("Failed to raise RuntimeError")

    def testForExceptionsRaisedInInstanceGetattr2(self):
        # Tests for exceptions raised in instance_getattr2().

        def booh(self):
            raise AttributeError("booh")

        class A:
            a = property(booh)
        try:
            A().a # Raised AttributeError: A instance has no attribute 'a'
        except AttributeError, x:
            if str(x) != "booh":
                self.fail("attribute error for A().a got masked: %s" % x)

        class E:
            __eq__ = property(booh)
        E() == E() # In debug mode, caused a C-level assert() to fail

        class I:
            __init__ = property(booh)
        try:
            # In debug mode, printed XXX undetected error and
            #  raises AttributeError
            I()
        except AttributeError, x:
            pass
        else:
            self.fail("attribute error for I.__init__ got masked")

    def testHashComparisonOfMethods(self):
        # Test comparison and hash of methods
        class A:
            def __init__(self, x):
                self.x = x
            def f(self):
                pass
            def g(self):
                pass
            def __eq__(self, other):
                return self.x == other.x
            def __hash__(self):
                return self.x
        class B(A):
            pass

        a1 = A(1)
        a2 = A(2)
        self.assertEqual(a1.f, a1.f)
        self.assertNotEqual(a1.f, a2.f)
        self.assertNotEqual(a1.f, a1.g)
        self.assertEqual(a1.f, A(1).f)
        self.assertEqual(hash(a1.f), hash(a1.f))
        self.assertEqual(hash(a1.f), hash(A(1).f))

        self.assertNotEqual(A.f, a1.f)
        self.assertNotEqual(A.f, A.g)
        self.assertEqual(B.f, A.f)
        self.assertEqual(hash(B.f), hash(A.f))

        # the following triggers a SystemError in 2.4
        a = A(hash(A.f.im_func)^(-1))
        hash(a.f)

def test_main():
    with test_support.check_py3k_warnings(
            (".+__(get|set|del)slice__ has been removed", DeprecationWarning),
            ("classic int division", DeprecationWarning),
            ("<> not supported", DeprecationWarning)):
        test_support.run_unittest(ClassTests)

if __name__=='__main__':
    test_main()