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
|
"""Unit tests for the copy module."""
import sys
import copy
import unittest
from test import test_support
class TestCopy(unittest.TestCase):
# Attempt full line coverage of copy.py from top to bottom
def test_exceptions(self):
self.assert_(copy.Error is copy.error)
self.assert_(issubclass(copy.Error, Exception))
# The copy() method
def test_copy_basic(self):
x = 42
y = copy.copy(x)
self.assertEqual(x, y)
def test_copy_copy(self):
class C(object):
def __init__(self, foo):
self.foo = foo
def __copy__(self):
return C(self.foo)
x = C(42)
y = copy.copy(x)
self.assertEqual(y.__class__, x.__class__)
self.assertEqual(y.foo, x.foo)
def test_copy_reduce(self):
class C(object):
def __reduce__(self):
return ""
x = C()
y = copy.copy(x)
self.assert_(y is x)
def test_copy_cant(self):
class C(object):
def __getattribute__(self, name):
if name == "__reduce__":
raise AttributeError, name
return object.__getattribute__(self, name)
x = C()
self.assertRaises(copy.Error, copy.copy, x)
# Type-specific _copy_xxx() methods
def test_copy_atomic(self):
class Classic:
pass
class NewStyle(object):
pass
def f():
pass
tests = [None, 42, 2L**100, 3.14, True, False, 1j,
"hello", u"hello\u1234", f.func_code,
NewStyle, xrange(10), Classic]
for x in tests:
self.assert_(copy.copy(x) is x, `x`)
def test_copy_list(self):
x = [1, 2, 3]
self.assertEqual(copy.copy(x), x)
def test_copy_tuple(self):
x = (1, 2, 3)
self.assertEqual(copy.copy(x), x)
def test_copy_dict(self):
x = {"foo": 1, "bar": 2}
self.assertEqual(copy.copy(x), x)
def test_copy_inst_vanilla(self):
class C:
def __init__(self, foo):
self.foo = foo
def __cmp__(self, other):
return cmp(self.foo, other.foo)
x = C(42)
self.assertEqual(copy.copy(x), x)
def test_copy_inst_copy(self):
class C:
def __init__(self, foo):
self.foo = foo
def __copy__(self):
return C(self.foo)
def __cmp__(self, other):
return cmp(self.foo, other.foo)
x = C(42)
self.assertEqual(copy.copy(x), x)
def test_copy_inst_getinitargs(self):
class C:
def __init__(self, foo):
self.foo = foo
def __getinitargs__(self):
return (self.foo,)
def __cmp__(self, other):
return cmp(self.foo, other.foo)
x = C(42)
self.assertEqual(copy.copy(x), x)
def test_copy_inst_getstate(self):
class C:
def __init__(self, foo):
self.foo = foo
def __getstate__(self):
return {"foo": self.foo}
def __cmp__(self, other):
return cmp(self.foo, other.foo)
x = C(42)
self.assertEqual(copy.copy(x), x)
def test_copy_inst_setstate(self):
class C:
def __init__(self, foo):
self.foo = foo
def __setstate__(self, state):
self.foo = state["foo"]
def __cmp__(self, other):
return cmp(self.foo, other.foo)
x = C(42)
self.assertEqual(copy.copy(x), x)
def test_copy_inst_getstate_setstate(self):
class C:
def __init__(self, foo):
self.foo = foo
def __getstate__(self):
return self.foo
def __setstate__(self, state):
self.foo = state
def __cmp__(self, other):
return cmp(self.foo, other.foo)
x = C(42)
self.assertEqual(copy.copy(x), x)
# The deepcopy() method
def test_deepcopy_basic(self):
x = 42
y = copy.deepcopy(x)
self.assertEqual(y, x)
def test_deepcopy_memo(self):
x = []
x.append(x)
y = copy.deepcopy(x)
self.assertEqual(y, x)
self.assert_(y is not x)
self.assert_(y[0] is not x[0])
self.assert_(y is y[0])
def test_deepcopy_issubclass(self):
# XXX Note: there's no way to test the TypeError coming out of
# issubclass() -- this can only happen when an extension
# module defines a "type" that doesn't formally inherit from
# type.
class Meta(type):
pass
class C:
__metaclass__ = Meta
self.assertEqual(copy.deepcopy(C), C)
def test_deepcopy_deepcopy(self):
class C(object):
def __init__(self, foo):
self.foo = foo
def __deepcopy__(self, memo=None):
return C(self.foo)
x = C(42)
y = copy.deepcopy(x)
self.assertEqual(y.__class__, x.__class__)
self.assertEqual(y.foo, x.foo)
def test_deepcopy_reduce(self):
class C(object):
def __reduce__(self):
return ""
x = C()
y = copy.deepcopy(x)
self.assert_(y is x)
def test_deepcopy_cant(self):
class C(object):
def __getattribute__(self, name):
if name == "__reduce__":
raise AttributeError, name
return object.__getattribute__(self, name)
x = C()
self.assertRaises(copy.Error, copy.deepcopy, x)
# Type-specific _deepcopy_xxx() methods
def test_deepcopy_atomic(self):
class Classic:
pass
class NewStyle(object):
pass
def f():
pass
tests = [None, 42, 2L**100, 3.14, True, False, 1j,
"hello", u"hello\u1234", f.func_code,
NewStyle, xrange(10)]
for x in tests:
self.assert_(copy.deepcopy(x) is x, `x`)
def test_deepcopy_list(self):
x = [[1, 2], 3]
y = copy.deepcopy(x)
self.assertEqual(y, x)
self.assert_(x is not y)
self.assert_(x[0] is not y[0])
def test_deepcopy_tuple(self):
x = ([1, 2], 3)
y = copy.deepcopy(x)
self.assertEqual(y, x)
self.assert_(x is not y)
self.assert_(x[0] is not y[0])
def test_deepcopy_dict(self):
x = {"foo": [1, 2], "bar": 3}
y = copy.deepcopy(x)
self.assertEqual(y, x)
self.assert_(x is not y)
self.assert_(x["foo"] is not y["foo"])
def test_deepcopy_keepalive(self):
memo = {}
x = 42
y = copy.deepcopy(x, memo)
self.assert_(memo[id(x)] is x)
def test_deepcopy_inst_vanilla(self):
class C:
def __init__(self, foo):
self.foo = foo
def __cmp__(self, other):
return cmp(self.foo, other.foo)
x = C([42])
y = copy.deepcopy(x)
self.assertEqual(y, x)
self.assert_(y.foo is not x.foo)
def test_deepcopy_inst_deepcopy(self):
class C:
def __init__(self, foo):
self.foo = foo
def __deepcopy__(self, memo):
return C(copy.deepcopy(self.foo, memo))
def __cmp__(self, other):
return cmp(self.foo, other.foo)
x = C([42])
y = copy.deepcopy(x)
self.assertEqual(y, x)
self.assert_(y is not x)
self.assert_(y.foo is not x.foo)
def test_deepcopy_inst_getinitargs(self):
class C:
def __init__(self, foo):
self.foo = foo
def __getinitargs__(self):
return (self.foo,)
def __cmp__(self, other):
return cmp(self.foo, other.foo)
x = C([42])
y = copy.deepcopy(x)
self.assertEqual(y, x)
self.assert_(y is not x)
self.assert_(y.foo is not x.foo)
def test_deepcopy_inst_getstate(self):
class C:
def __init__(self, foo):
self.foo = foo
def __getstate__(self):
return {"foo": self.foo}
def __cmp__(self, other):
return cmp(self.foo, other.foo)
x = C([42])
y = copy.deepcopy(x)
self.assertEqual(y, x)
self.assert_(y is not x)
self.assert_(y.foo is not x.foo)
def test_deepcopy_inst_setstate(self):
class C:
def __init__(self, foo):
self.foo = foo
def __setstate__(self, state):
self.foo = state["foo"]
def __cmp__(self, other):
return cmp(self.foo, other.foo)
x = C([42])
y = copy.deepcopy(x)
self.assertEqual(y, x)
self.assert_(y is not x)
self.assert_(y.foo is not x.foo)
def test_deepcopy_inst_getstate_setstate(self):
class C:
def __init__(self, foo):
self.foo = foo
def __getstate__(self):
return self.foo
def __setstate__(self, state):
self.foo = state
def __cmp__(self, other):
return cmp(self.foo, other.foo)
x = C([42])
y = copy.deepcopy(x)
self.assertEqual(y, x)
self.assert_(y is not x)
self.assert_(y.foo is not x.foo)
# _reconstruct()
def test_reconstruct_string(self):
class C(object):
def __reduce__(self):
return ""
x = C()
y = copy.copy(x)
self.assert_(y is x)
y = copy.deepcopy(x)
self.assert_(y is x)
def test_reconstruct_nostate(self):
class C(object):
def __reduce__(self):
return (C, ())
x = C()
x.foo = 42
y = copy.copy(x)
self.assert_(y.__class__ is x.__class__)
y = copy.deepcopy(x)
self.assert_(y.__class__ is x.__class__)
def test_reconstruct_state(self):
class C(object):
def __reduce__(self):
return (C, (), self.__dict__)
def __cmp__(self, other):
return cmp(self.__dict__, other.__dict__)
x = C()
x.foo = [42]
y = copy.copy(x)
self.assertEqual(y, x)
y = copy.deepcopy(x)
self.assertEqual(y, x)
self.assert_(y.foo is not x.foo)
def test_reconstruct_state_setstate(self):
class C(object):
def __reduce__(self):
return (C, (), self.__dict__)
def __setstate__(self, state):
self.__dict__.update(state)
def __cmp__(self, other):
return cmp(self.__dict__, other.__dict__)
x = C()
x.foo = [42]
y = copy.copy(x)
self.assertEqual(y, x)
y = copy.deepcopy(x)
self.assertEqual(y, x)
self.assert_(y.foo is not x.foo)
# Additions for Python 2.3 and pickle protocol 2
def test_reduce_4tuple(self):
class C(list):
def __reduce__(self):
return (C, (), self.__dict__, iter(self))
def __cmp__(self, other):
return (cmp(list(self), list(other)) or
cmp(self.__dict__, other.__dict__))
x = C([[1, 2], 3])
y = copy.copy(x)
self.assertEqual(x, y)
self.assert_(x is not y)
self.assert_(x[0] is y[0])
y = copy.deepcopy(x)
self.assertEqual(x, y)
self.assert_(x is not y)
self.assert_(x[0] is not y[0])
def test_reduce_5tuple(self):
class C(dict):
def __reduce__(self):
return (C, (), self.__dict__, None, self.iteritems())
def __cmp__(self, other):
return (cmp(dict(self), list(dict)) or
cmp(self.__dict__, other.__dict__))
x = C([("foo", [1, 2]), ("bar", 3)])
y = copy.copy(x)
self.assertEqual(x, y)
self.assert_(x is not y)
self.assert_(x["foo"] is y["foo"])
y = copy.deepcopy(x)
self.assertEqual(x, y)
self.assert_(x is not y)
self.assert_(x["foo"] is not y["foo"])
def test_main():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(TestCopy))
test_support.run_suite(suite)
if __name__ == "__main__":
test_main()
|
