Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 1 | """Unit tests for the copy module.""" |
| 2 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 3 | import copy |
Alexandre Vassalotti | f7fa63d | 2008-05-11 08:55:36 +0000 | [diff] [blame] | 4 | import copyreg |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 5 | import weakref |
Mark Dickinson | a56c467 | 2009-01-27 18:17:45 +0000 | [diff] [blame] | 6 | from operator import le, lt, ge, gt, eq, ne |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 7 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 8 | import unittest |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 9 | from test import support |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 10 | |
Mark Dickinson | a56c467 | 2009-01-27 18:17:45 +0000 | [diff] [blame] | 11 | order_comparisons = le, lt, ge, gt |
| 12 | equality_comparisons = eq, ne |
| 13 | comparisons = order_comparisons + equality_comparisons |
| 14 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 15 | class TestCopy(unittest.TestCase): |
| 16 | |
| 17 | # Attempt full line coverage of copy.py from top to bottom |
| 18 | |
| 19 | def test_exceptions(self): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 20 | self.assertIs(copy.Error, copy.error) |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 21 | self.assertTrue(issubclass(copy.Error, Exception)) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 22 | |
| 23 | # The copy() method |
| 24 | |
| 25 | def test_copy_basic(self): |
| 26 | x = 42 |
| 27 | y = copy.copy(x) |
| 28 | self.assertEqual(x, y) |
| 29 | |
| 30 | def test_copy_copy(self): |
| 31 | class C(object): |
| 32 | def __init__(self, foo): |
| 33 | self.foo = foo |
| 34 | def __copy__(self): |
| 35 | return C(self.foo) |
| 36 | x = C(42) |
| 37 | y = copy.copy(x) |
| 38 | self.assertEqual(y.__class__, x.__class__) |
| 39 | self.assertEqual(y.foo, x.foo) |
| 40 | |
Guido van Rossum | c06e3ac | 2003-02-07 17:30:18 +0000 | [diff] [blame] | 41 | def test_copy_registry(self): |
| 42 | class C(object): |
| 43 | def __new__(cls, foo): |
| 44 | obj = object.__new__(cls) |
| 45 | obj.foo = foo |
| 46 | return obj |
| 47 | def pickle_C(obj): |
| 48 | return (C, (obj.foo,)) |
| 49 | x = C(42) |
| 50 | self.assertRaises(TypeError, copy.copy, x) |
Alexandre Vassalotti | f7fa63d | 2008-05-11 08:55:36 +0000 | [diff] [blame] | 51 | copyreg.pickle(C, pickle_C, C) |
Guido van Rossum | c06e3ac | 2003-02-07 17:30:18 +0000 | [diff] [blame] | 52 | y = copy.copy(x) |
| 53 | |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 54 | def test_copy_reduce_ex(self): |
| 55 | class C(object): |
| 56 | def __reduce_ex__(self, proto): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 57 | c.append(1) |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 58 | return "" |
| 59 | def __reduce__(self): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 60 | self.fail("shouldn't call this") |
| 61 | c = [] |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 62 | x = C() |
| 63 | y = copy.copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 64 | self.assertIs(y, x) |
| 65 | self.assertEqual(c, [1]) |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 66 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 67 | def test_copy_reduce(self): |
| 68 | class C(object): |
| 69 | def __reduce__(self): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 70 | c.append(1) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 71 | return "" |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 72 | c = [] |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 73 | x = C() |
| 74 | y = copy.copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 75 | self.assertIs(y, x) |
| 76 | self.assertEqual(c, [1]) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 77 | |
| 78 | def test_copy_cant(self): |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 79 | class C(object): |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 80 | def __getattribute__(self, name): |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 81 | if name.startswith("__reduce"): |
Collin Winter | 3add4d7 | 2007-08-29 23:37:32 +0000 | [diff] [blame] | 82 | raise AttributeError(name) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 83 | return object.__getattribute__(self, name) |
| 84 | x = C() |
| 85 | self.assertRaises(copy.Error, copy.copy, x) |
| 86 | |
| 87 | # Type-specific _copy_xxx() methods |
| 88 | |
| 89 | def test_copy_atomic(self): |
| 90 | class Classic: |
| 91 | pass |
| 92 | class NewStyle(object): |
| 93 | pass |
| 94 | def f(): |
| 95 | pass |
Guido van Rossum | e2a383d | 2007-01-15 16:59:06 +0000 | [diff] [blame] | 96 | tests = [None, 42, 2**100, 3.14, True, False, 1j, |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 97 | "hello", "hello\u1234", f.__code__, |
Guido van Rossum | 805365e | 2007-05-07 22:24:25 +0000 | [diff] [blame] | 98 | NewStyle, range(10), Classic, max] |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 99 | for x in tests: |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 100 | self.assertIs(copy.copy(x), x) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 101 | |
| 102 | def test_copy_list(self): |
| 103 | x = [1, 2, 3] |
| 104 | self.assertEqual(copy.copy(x), x) |
| 105 | |
| 106 | def test_copy_tuple(self): |
| 107 | x = (1, 2, 3) |
| 108 | self.assertEqual(copy.copy(x), x) |
| 109 | |
| 110 | def test_copy_dict(self): |
| 111 | x = {"foo": 1, "bar": 2} |
| 112 | self.assertEqual(copy.copy(x), x) |
| 113 | |
| 114 | def test_copy_inst_vanilla(self): |
| 115 | class C: |
| 116 | def __init__(self, foo): |
| 117 | self.foo = foo |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 118 | def __eq__(self, other): |
| 119 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 120 | x = C(42) |
| 121 | self.assertEqual(copy.copy(x), x) |
| 122 | |
| 123 | def test_copy_inst_copy(self): |
| 124 | class C: |
| 125 | def __init__(self, foo): |
| 126 | self.foo = foo |
| 127 | def __copy__(self): |
| 128 | return C(self.foo) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 129 | def __eq__(self, other): |
| 130 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 131 | x = C(42) |
| 132 | self.assertEqual(copy.copy(x), x) |
| 133 | |
| 134 | def test_copy_inst_getinitargs(self): |
| 135 | class C: |
| 136 | def __init__(self, foo): |
| 137 | self.foo = foo |
| 138 | def __getinitargs__(self): |
| 139 | return (self.foo,) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 140 | def __eq__(self, other): |
| 141 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 142 | x = C(42) |
| 143 | self.assertEqual(copy.copy(x), x) |
| 144 | |
| 145 | def test_copy_inst_getstate(self): |
| 146 | class C: |
| 147 | def __init__(self, foo): |
| 148 | self.foo = foo |
| 149 | def __getstate__(self): |
| 150 | return {"foo": self.foo} |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 151 | def __eq__(self, other): |
| 152 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 153 | x = C(42) |
| 154 | self.assertEqual(copy.copy(x), x) |
| 155 | |
| 156 | def test_copy_inst_setstate(self): |
| 157 | class C: |
| 158 | def __init__(self, foo): |
| 159 | self.foo = foo |
| 160 | def __setstate__(self, state): |
| 161 | self.foo = state["foo"] |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 162 | def __eq__(self, other): |
| 163 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 164 | x = C(42) |
| 165 | self.assertEqual(copy.copy(x), x) |
| 166 | |
| 167 | def test_copy_inst_getstate_setstate(self): |
| 168 | class C: |
| 169 | def __init__(self, foo): |
| 170 | self.foo = foo |
| 171 | def __getstate__(self): |
| 172 | return self.foo |
| 173 | def __setstate__(self, state): |
| 174 | self.foo = state |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 175 | def __eq__(self, other): |
| 176 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 177 | x = C(42) |
| 178 | self.assertEqual(copy.copy(x), x) |
| 179 | |
| 180 | # The deepcopy() method |
| 181 | |
| 182 | def test_deepcopy_basic(self): |
| 183 | x = 42 |
| 184 | y = copy.deepcopy(x) |
| 185 | self.assertEqual(y, x) |
| 186 | |
| 187 | def test_deepcopy_memo(self): |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 188 | # Tests of reflexive objects are under type-specific sections below. |
| 189 | # This tests only repetitions of objects. |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 190 | x = [] |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 191 | x = [x, x] |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 192 | y = copy.deepcopy(x) |
| 193 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 194 | self.assertIsNot(y, x) |
| 195 | self.assertIsNot(y[0], x[0]) |
| 196 | self.assertIs(y[0], y[1]) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 197 | |
| 198 | def test_deepcopy_issubclass(self): |
| 199 | # XXX Note: there's no way to test the TypeError coming out of |
| 200 | # issubclass() -- this can only happen when an extension |
| 201 | # module defines a "type" that doesn't formally inherit from |
| 202 | # type. |
| 203 | class Meta(type): |
| 204 | pass |
Guido van Rossum | 52cc1d8 | 2007-03-18 15:41:51 +0000 | [diff] [blame] | 205 | class C(metaclass=Meta): |
| 206 | pass |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 207 | self.assertEqual(copy.deepcopy(C), C) |
| 208 | |
| 209 | def test_deepcopy_deepcopy(self): |
| 210 | class C(object): |
| 211 | def __init__(self, foo): |
| 212 | self.foo = foo |
| 213 | def __deepcopy__(self, memo=None): |
| 214 | return C(self.foo) |
| 215 | x = C(42) |
| 216 | y = copy.deepcopy(x) |
| 217 | self.assertEqual(y.__class__, x.__class__) |
| 218 | self.assertEqual(y.foo, x.foo) |
| 219 | |
Guido van Rossum | c06e3ac | 2003-02-07 17:30:18 +0000 | [diff] [blame] | 220 | def test_deepcopy_registry(self): |
| 221 | class C(object): |
| 222 | def __new__(cls, foo): |
| 223 | obj = object.__new__(cls) |
| 224 | obj.foo = foo |
| 225 | return obj |
| 226 | def pickle_C(obj): |
| 227 | return (C, (obj.foo,)) |
| 228 | x = C(42) |
| 229 | self.assertRaises(TypeError, copy.deepcopy, x) |
Alexandre Vassalotti | f7fa63d | 2008-05-11 08:55:36 +0000 | [diff] [blame] | 230 | copyreg.pickle(C, pickle_C, C) |
Guido van Rossum | c06e3ac | 2003-02-07 17:30:18 +0000 | [diff] [blame] | 231 | y = copy.deepcopy(x) |
| 232 | |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 233 | def test_deepcopy_reduce_ex(self): |
| 234 | class C(object): |
| 235 | def __reduce_ex__(self, proto): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 236 | c.append(1) |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 237 | return "" |
| 238 | def __reduce__(self): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 239 | self.fail("shouldn't call this") |
| 240 | c = [] |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 241 | x = C() |
| 242 | y = copy.deepcopy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 243 | self.assertIs(y, x) |
| 244 | self.assertEqual(c, [1]) |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 245 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 246 | def test_deepcopy_reduce(self): |
| 247 | class C(object): |
| 248 | def __reduce__(self): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 249 | c.append(1) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 250 | return "" |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 251 | c = [] |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 252 | x = C() |
| 253 | y = copy.deepcopy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 254 | self.assertIs(y, x) |
| 255 | self.assertEqual(c, [1]) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 256 | |
| 257 | def test_deepcopy_cant(self): |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 258 | class C(object): |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 259 | def __getattribute__(self, name): |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 260 | if name.startswith("__reduce"): |
Collin Winter | 3add4d7 | 2007-08-29 23:37:32 +0000 | [diff] [blame] | 261 | raise AttributeError(name) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 262 | return object.__getattribute__(self, name) |
| 263 | x = C() |
| 264 | self.assertRaises(copy.Error, copy.deepcopy, x) |
| 265 | |
| 266 | # Type-specific _deepcopy_xxx() methods |
| 267 | |
| 268 | def test_deepcopy_atomic(self): |
| 269 | class Classic: |
| 270 | pass |
| 271 | class NewStyle(object): |
| 272 | pass |
| 273 | def f(): |
| 274 | pass |
Guido van Rossum | e2a383d | 2007-01-15 16:59:06 +0000 | [diff] [blame] | 275 | tests = [None, 42, 2**100, 3.14, True, False, 1j, |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 276 | "hello", "hello\u1234", f.__code__, |
Guido van Rossum | 805365e | 2007-05-07 22:24:25 +0000 | [diff] [blame] | 277 | NewStyle, range(10), Classic, max] |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 278 | for x in tests: |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 279 | self.assertIs(copy.deepcopy(x), x) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 280 | |
| 281 | def test_deepcopy_list(self): |
| 282 | x = [[1, 2], 3] |
| 283 | y = copy.deepcopy(x) |
| 284 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 285 | self.assertIsNot(x, y) |
| 286 | self.assertIsNot(x[0], y[0]) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 287 | |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 288 | def test_deepcopy_reflexive_list(self): |
| 289 | x = [] |
| 290 | x.append(x) |
| 291 | y = copy.deepcopy(x) |
Mark Dickinson | a56c467 | 2009-01-27 18:17:45 +0000 | [diff] [blame] | 292 | for op in comparisons: |
| 293 | self.assertRaises(RuntimeError, op, y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 294 | self.assertIsNot(y, x) |
| 295 | self.assertIs(y[0], y) |
Armin Rigo | 2b3eb40 | 2003-10-28 12:05:48 +0000 | [diff] [blame] | 296 | self.assertEqual(len(y), 1) |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 297 | |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 298 | def test_deepcopy_empty_tuple(self): |
| 299 | x = () |
| 300 | y = copy.deepcopy(x) |
| 301 | self.assertIs(x, y) |
| 302 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 303 | def test_deepcopy_tuple(self): |
| 304 | x = ([1, 2], 3) |
| 305 | y = copy.deepcopy(x) |
| 306 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 307 | self.assertIsNot(x, y) |
| 308 | self.assertIsNot(x[0], y[0]) |
| 309 | |
| 310 | def test_deepcopy_tuple_of_immutables(self): |
| 311 | x = ((1, 2), 3) |
| 312 | y = copy.deepcopy(x) |
| 313 | self.assertIs(x, y) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 314 | |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 315 | def test_deepcopy_reflexive_tuple(self): |
| 316 | x = ([],) |
| 317 | x[0].append(x) |
| 318 | y = copy.deepcopy(x) |
Mark Dickinson | a56c467 | 2009-01-27 18:17:45 +0000 | [diff] [blame] | 319 | for op in comparisons: |
| 320 | self.assertRaises(RuntimeError, op, y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 321 | self.assertIsNot(y, x) |
| 322 | self.assertIsNot(y[0], x[0]) |
| 323 | self.assertIs(y[0][0], y) |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 324 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 325 | def test_deepcopy_dict(self): |
| 326 | x = {"foo": [1, 2], "bar": 3} |
| 327 | y = copy.deepcopy(x) |
| 328 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 329 | self.assertIsNot(x, y) |
| 330 | self.assertIsNot(x["foo"], y["foo"]) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 331 | |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 332 | def test_deepcopy_reflexive_dict(self): |
| 333 | x = {} |
| 334 | x['foo'] = x |
| 335 | y = copy.deepcopy(x) |
Mark Dickinson | a56c467 | 2009-01-27 18:17:45 +0000 | [diff] [blame] | 336 | for op in order_comparisons: |
| 337 | self.assertRaises(TypeError, op, y, x) |
| 338 | for op in equality_comparisons: |
| 339 | self.assertRaises(RuntimeError, op, y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 340 | self.assertIsNot(y, x) |
| 341 | self.assertIs(y['foo'], y) |
Armin Rigo | 2b3eb40 | 2003-10-28 12:05:48 +0000 | [diff] [blame] | 342 | self.assertEqual(len(y), 1) |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 343 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 344 | def test_deepcopy_keepalive(self): |
| 345 | memo = {} |
Benjamin Peterson | e90ec36 | 2011-06-27 16:22:46 -0500 | [diff] [blame] | 346 | x = [] |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 347 | y = copy.deepcopy(x, memo) |
Benjamin Peterson | e90ec36 | 2011-06-27 16:22:46 -0500 | [diff] [blame] | 348 | self.assertIs(memo[id(memo)][0], x) |
| 349 | |
| 350 | def test_deepcopy_dont_memo_immutable(self): |
| 351 | memo = {} |
| 352 | x = [1, 2, 3, 4] |
| 353 | y = copy.deepcopy(x, memo) |
| 354 | self.assertEqual(y, x) |
| 355 | # There's the entry for the new list, and the keep alive. |
| 356 | self.assertEqual(len(memo), 2) |
| 357 | |
| 358 | memo = {} |
| 359 | x = [(1, 2)] |
| 360 | y = copy.deepcopy(x, memo) |
| 361 | self.assertEqual(y, x) |
| 362 | # Tuples with immutable contents are immutable for deepcopy. |
| 363 | self.assertEqual(len(memo), 2) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 364 | |
| 365 | def test_deepcopy_inst_vanilla(self): |
| 366 | class C: |
| 367 | def __init__(self, foo): |
| 368 | self.foo = foo |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 369 | def __eq__(self, other): |
| 370 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 371 | x = C([42]) |
| 372 | y = copy.deepcopy(x) |
| 373 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 374 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 375 | |
| 376 | def test_deepcopy_inst_deepcopy(self): |
| 377 | class C: |
| 378 | def __init__(self, foo): |
| 379 | self.foo = foo |
| 380 | def __deepcopy__(self, memo): |
| 381 | return C(copy.deepcopy(self.foo, memo)) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 382 | def __eq__(self, other): |
| 383 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 384 | x = C([42]) |
| 385 | y = copy.deepcopy(x) |
| 386 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 387 | self.assertIsNot(y, x) |
| 388 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 389 | |
| 390 | def test_deepcopy_inst_getinitargs(self): |
| 391 | class C: |
| 392 | def __init__(self, foo): |
| 393 | self.foo = foo |
| 394 | def __getinitargs__(self): |
| 395 | return (self.foo,) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 396 | def __eq__(self, other): |
| 397 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 398 | x = C([42]) |
| 399 | y = copy.deepcopy(x) |
| 400 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 401 | self.assertIsNot(y, x) |
| 402 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 403 | |
| 404 | def test_deepcopy_inst_getstate(self): |
| 405 | class C: |
| 406 | def __init__(self, foo): |
| 407 | self.foo = foo |
| 408 | def __getstate__(self): |
| 409 | return {"foo": self.foo} |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 410 | def __eq__(self, other): |
| 411 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 412 | x = C([42]) |
| 413 | y = copy.deepcopy(x) |
| 414 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 415 | self.assertIsNot(y, x) |
| 416 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 417 | |
| 418 | def test_deepcopy_inst_setstate(self): |
| 419 | class C: |
| 420 | def __init__(self, foo): |
| 421 | self.foo = foo |
| 422 | def __setstate__(self, state): |
| 423 | self.foo = state["foo"] |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 424 | def __eq__(self, other): |
| 425 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 426 | x = C([42]) |
| 427 | y = copy.deepcopy(x) |
| 428 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 429 | self.assertIsNot(y, x) |
| 430 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 431 | |
| 432 | def test_deepcopy_inst_getstate_setstate(self): |
| 433 | class C: |
| 434 | def __init__(self, foo): |
| 435 | self.foo = foo |
| 436 | def __getstate__(self): |
| 437 | return self.foo |
| 438 | def __setstate__(self, state): |
| 439 | self.foo = state |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 440 | def __eq__(self, other): |
| 441 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 442 | x = C([42]) |
| 443 | y = copy.deepcopy(x) |
| 444 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 445 | self.assertIsNot(y, x) |
| 446 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 447 | |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 448 | def test_deepcopy_reflexive_inst(self): |
| 449 | class C: |
| 450 | pass |
| 451 | x = C() |
| 452 | x.foo = x |
| 453 | y = copy.deepcopy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 454 | self.assertIsNot(y, x) |
| 455 | self.assertIs(y.foo, y) |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 456 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 457 | # _reconstruct() |
| 458 | |
| 459 | def test_reconstruct_string(self): |
| 460 | class C(object): |
| 461 | def __reduce__(self): |
| 462 | return "" |
| 463 | x = C() |
| 464 | y = copy.copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 465 | self.assertIs(y, x) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 466 | y = copy.deepcopy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 467 | self.assertIs(y, x) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 468 | |
| 469 | def test_reconstruct_nostate(self): |
| 470 | class C(object): |
| 471 | def __reduce__(self): |
| 472 | return (C, ()) |
| 473 | x = C() |
| 474 | x.foo = 42 |
| 475 | y = copy.copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 476 | self.assertIs(y.__class__, x.__class__) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 477 | y = copy.deepcopy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 478 | self.assertIs(y.__class__, x.__class__) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 479 | |
| 480 | def test_reconstruct_state(self): |
| 481 | class C(object): |
| 482 | def __reduce__(self): |
| 483 | return (C, (), self.__dict__) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 484 | def __eq__(self, other): |
| 485 | return self.__dict__ == other.__dict__ |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 486 | x = C() |
| 487 | x.foo = [42] |
| 488 | y = copy.copy(x) |
| 489 | self.assertEqual(y, x) |
| 490 | y = copy.deepcopy(x) |
| 491 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 492 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 493 | |
| 494 | def test_reconstruct_state_setstate(self): |
| 495 | class C(object): |
| 496 | def __reduce__(self): |
| 497 | return (C, (), self.__dict__) |
| 498 | def __setstate__(self, state): |
| 499 | self.__dict__.update(state) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 500 | def __eq__(self, other): |
| 501 | return self.__dict__ == other.__dict__ |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 502 | x = C() |
| 503 | x.foo = [42] |
| 504 | y = copy.copy(x) |
| 505 | self.assertEqual(y, x) |
| 506 | y = copy.deepcopy(x) |
| 507 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 508 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 509 | |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 510 | def test_reconstruct_reflexive(self): |
| 511 | class C(object): |
| 512 | pass |
| 513 | x = C() |
| 514 | x.foo = x |
| 515 | y = copy.deepcopy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 516 | self.assertIsNot(y, x) |
| 517 | self.assertIs(y.foo, y) |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 518 | |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 519 | # Additions for Python 2.3 and pickle protocol 2 |
| 520 | |
| 521 | def test_reduce_4tuple(self): |
| 522 | class C(list): |
| 523 | def __reduce__(self): |
| 524 | return (C, (), self.__dict__, iter(self)) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 525 | def __eq__(self, other): |
| 526 | return (list(self) == list(other) and |
| 527 | self.__dict__ == other.__dict__) |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 528 | x = C([[1, 2], 3]) |
| 529 | y = copy.copy(x) |
| 530 | self.assertEqual(x, y) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 531 | self.assertIsNot(x, y) |
| 532 | self.assertIs(x[0], y[0]) |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 533 | y = copy.deepcopy(x) |
| 534 | self.assertEqual(x, y) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 535 | self.assertIsNot(x, y) |
| 536 | self.assertIsNot(x[0], y[0]) |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 537 | |
| 538 | def test_reduce_5tuple(self): |
| 539 | class C(dict): |
| 540 | def __reduce__(self): |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 541 | return (C, (), self.__dict__, None, self.items()) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 542 | def __eq__(self, other): |
| 543 | return (dict(self) == dict(other) and |
| 544 | self.__dict__ == other.__dict__) |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 545 | x = C([("foo", [1, 2]), ("bar", 3)]) |
| 546 | y = copy.copy(x) |
| 547 | self.assertEqual(x, y) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 548 | self.assertIsNot(x, y) |
| 549 | self.assertIs(x["foo"], y["foo"]) |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 550 | y = copy.deepcopy(x) |
| 551 | self.assertEqual(x, y) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 552 | self.assertIsNot(x, y) |
| 553 | self.assertIsNot(x["foo"], y["foo"]) |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 554 | |
Guido van Rossum | c755758 | 2003-02-06 19:53:22 +0000 | [diff] [blame] | 555 | def test_copy_slots(self): |
| 556 | class C(object): |
| 557 | __slots__ = ["foo"] |
| 558 | x = C() |
| 559 | x.foo = [42] |
| 560 | y = copy.copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 561 | self.assertIs(x.foo, y.foo) |
Guido van Rossum | c755758 | 2003-02-06 19:53:22 +0000 | [diff] [blame] | 562 | |
| 563 | def test_deepcopy_slots(self): |
| 564 | class C(object): |
| 565 | __slots__ = ["foo"] |
| 566 | x = C() |
| 567 | x.foo = [42] |
| 568 | y = copy.deepcopy(x) |
| 569 | self.assertEqual(x.foo, y.foo) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 570 | self.assertIsNot(x.foo, y.foo) |
Guido van Rossum | c755758 | 2003-02-06 19:53:22 +0000 | [diff] [blame] | 571 | |
Antoine Pitrou | 3941a8f | 2010-09-04 17:40:21 +0000 | [diff] [blame] | 572 | def test_deepcopy_dict_subclass(self): |
| 573 | class C(dict): |
| 574 | def __init__(self, d=None): |
| 575 | if not d: |
| 576 | d = {} |
| 577 | self._keys = list(d.keys()) |
| 578 | super().__init__(d) |
| 579 | def __setitem__(self, key, item): |
| 580 | super().__setitem__(key, item) |
| 581 | if key not in self._keys: |
| 582 | self._keys.append(key) |
| 583 | x = C(d={'foo':0}) |
| 584 | y = copy.deepcopy(x) |
| 585 | self.assertEqual(x, y) |
| 586 | self.assertEqual(x._keys, y._keys) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 587 | self.assertIsNot(x, y) |
Antoine Pitrou | 3941a8f | 2010-09-04 17:40:21 +0000 | [diff] [blame] | 588 | x['bar'] = 1 |
| 589 | self.assertNotEqual(x, y) |
| 590 | self.assertNotEqual(x._keys, y._keys) |
| 591 | |
Guido van Rossum | c755758 | 2003-02-06 19:53:22 +0000 | [diff] [blame] | 592 | def test_copy_list_subclass(self): |
| 593 | class C(list): |
| 594 | pass |
| 595 | x = C([[1, 2], 3]) |
| 596 | x.foo = [4, 5] |
| 597 | y = copy.copy(x) |
| 598 | self.assertEqual(list(x), list(y)) |
| 599 | self.assertEqual(x.foo, y.foo) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 600 | self.assertIs(x[0], y[0]) |
| 601 | self.assertIs(x.foo, y.foo) |
Guido van Rossum | c755758 | 2003-02-06 19:53:22 +0000 | [diff] [blame] | 602 | |
| 603 | def test_deepcopy_list_subclass(self): |
| 604 | class C(list): |
| 605 | pass |
| 606 | x = C([[1, 2], 3]) |
| 607 | x.foo = [4, 5] |
| 608 | y = copy.deepcopy(x) |
| 609 | self.assertEqual(list(x), list(y)) |
| 610 | self.assertEqual(x.foo, y.foo) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 611 | self.assertIsNot(x[0], y[0]) |
| 612 | self.assertIsNot(x.foo, y.foo) |
Guido van Rossum | c755758 | 2003-02-06 19:53:22 +0000 | [diff] [blame] | 613 | |
Guido van Rossum | 85233bf | 2003-02-06 21:25:12 +0000 | [diff] [blame] | 614 | def test_copy_tuple_subclass(self): |
| 615 | class C(tuple): |
| 616 | pass |
| 617 | x = C([1, 2, 3]) |
| 618 | self.assertEqual(tuple(x), (1, 2, 3)) |
| 619 | y = copy.copy(x) |
| 620 | self.assertEqual(tuple(y), (1, 2, 3)) |
| 621 | |
| 622 | def test_deepcopy_tuple_subclass(self): |
| 623 | class C(tuple): |
| 624 | pass |
| 625 | x = C([[1, 2], 3]) |
| 626 | self.assertEqual(tuple(x), ([1, 2], 3)) |
| 627 | y = copy.deepcopy(x) |
| 628 | self.assertEqual(tuple(y), ([1, 2], 3)) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 629 | self.assertIsNot(x, y) |
| 630 | self.assertIsNot(x[0], y[0]) |
Guido van Rossum | 85233bf | 2003-02-06 21:25:12 +0000 | [diff] [blame] | 631 | |
Neal Norwitz | e2fdc61 | 2003-06-08 13:19:58 +0000 | [diff] [blame] | 632 | def test_getstate_exc(self): |
| 633 | class EvilState(object): |
| 634 | def __getstate__(self): |
Collin Winter | 3add4d7 | 2007-08-29 23:37:32 +0000 | [diff] [blame] | 635 | raise ValueError("ain't got no stickin' state") |
Neal Norwitz | e2fdc61 | 2003-06-08 13:19:58 +0000 | [diff] [blame] | 636 | self.assertRaises(ValueError, copy.copy, EvilState()) |
| 637 | |
Guido van Rossum | 1968ad3 | 2006-02-25 22:38:04 +0000 | [diff] [blame] | 638 | def test_copy_function(self): |
| 639 | self.assertEqual(copy.copy(global_foo), global_foo) |
| 640 | def foo(x, y): return x+y |
| 641 | self.assertEqual(copy.copy(foo), foo) |
| 642 | bar = lambda: None |
| 643 | self.assertEqual(copy.copy(bar), bar) |
| 644 | |
| 645 | def test_deepcopy_function(self): |
| 646 | self.assertEqual(copy.deepcopy(global_foo), global_foo) |
| 647 | def foo(x, y): return x+y |
| 648 | self.assertEqual(copy.deepcopy(foo), foo) |
| 649 | bar = lambda: None |
| 650 | self.assertEqual(copy.deepcopy(bar), bar) |
| 651 | |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 652 | def _check_weakref(self, _copy): |
| 653 | class C(object): |
| 654 | pass |
| 655 | obj = C() |
| 656 | x = weakref.ref(obj) |
| 657 | y = _copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 658 | self.assertIs(y, x) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 659 | del obj |
| 660 | y = _copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 661 | self.assertIs(y, x) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 662 | |
| 663 | def test_copy_weakref(self): |
| 664 | self._check_weakref(copy.copy) |
| 665 | |
| 666 | def test_deepcopy_weakref(self): |
| 667 | self._check_weakref(copy.deepcopy) |
| 668 | |
| 669 | def _check_copy_weakdict(self, _dicttype): |
| 670 | class C(object): |
| 671 | pass |
| 672 | a, b, c, d = [C() for i in range(4)] |
| 673 | u = _dicttype() |
| 674 | u[a] = b |
| 675 | u[c] = d |
| 676 | v = copy.copy(u) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 677 | self.assertIsNot(v, u) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 678 | self.assertEqual(v, u) |
| 679 | self.assertEqual(v[a], b) |
| 680 | self.assertEqual(v[c], d) |
| 681 | self.assertEqual(len(v), 2) |
| 682 | del c, d |
| 683 | self.assertEqual(len(v), 1) |
| 684 | x, y = C(), C() |
| 685 | # The underlying containers are decoupled |
| 686 | v[x] = y |
Ezio Melotti | b58e0bd | 2010-01-23 15:40:09 +0000 | [diff] [blame] | 687 | self.assertNotIn(x, u) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 688 | |
| 689 | def test_copy_weakkeydict(self): |
| 690 | self._check_copy_weakdict(weakref.WeakKeyDictionary) |
| 691 | |
| 692 | def test_copy_weakvaluedict(self): |
| 693 | self._check_copy_weakdict(weakref.WeakValueDictionary) |
| 694 | |
| 695 | def test_deepcopy_weakkeydict(self): |
| 696 | class C(object): |
| 697 | def __init__(self, i): |
| 698 | self.i = i |
| 699 | a, b, c, d = [C(i) for i in range(4)] |
| 700 | u = weakref.WeakKeyDictionary() |
| 701 | u[a] = b |
| 702 | u[c] = d |
| 703 | # Keys aren't copied, values are |
| 704 | v = copy.deepcopy(u) |
| 705 | self.assertNotEqual(v, u) |
| 706 | self.assertEqual(len(v), 2) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 707 | self.assertIsNot(v[a], b) |
| 708 | self.assertIsNot(v[c], d) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 709 | self.assertEqual(v[a].i, b.i) |
| 710 | self.assertEqual(v[c].i, d.i) |
| 711 | del c |
| 712 | self.assertEqual(len(v), 1) |
| 713 | |
| 714 | def test_deepcopy_weakvaluedict(self): |
| 715 | class C(object): |
| 716 | def __init__(self, i): |
| 717 | self.i = i |
| 718 | a, b, c, d = [C(i) for i in range(4)] |
| 719 | u = weakref.WeakValueDictionary() |
| 720 | u[a] = b |
| 721 | u[c] = d |
| 722 | # Keys are copied, values aren't |
| 723 | v = copy.deepcopy(u) |
| 724 | self.assertNotEqual(v, u) |
| 725 | self.assertEqual(len(v), 2) |
| 726 | (x, y), (z, t) = sorted(v.items(), key=lambda pair: pair[0].i) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 727 | self.assertIsNot(x, a) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 728 | self.assertEqual(x.i, a.i) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 729 | self.assertIs(y, b) |
| 730 | self.assertIsNot(z, c) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 731 | self.assertEqual(z.i, c.i) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 732 | self.assertIs(t, d) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 733 | del x, y, z, t |
| 734 | del d |
| 735 | self.assertEqual(len(v), 1) |
| 736 | |
Antoine Pitrou | 1fc0d2b | 2009-11-28 15:58:27 +0000 | [diff] [blame] | 737 | def test_deepcopy_bound_method(self): |
| 738 | class Foo(object): |
| 739 | def m(self): |
| 740 | pass |
| 741 | f = Foo() |
| 742 | f.b = f.m |
| 743 | g = copy.deepcopy(f) |
| 744 | self.assertEqual(g.m, g.b) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 745 | self.assertIs(g.b.__self__, g) |
Antoine Pitrou | 1fc0d2b | 2009-11-28 15:58:27 +0000 | [diff] [blame] | 746 | g.b() |
| 747 | |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 748 | |
Guido van Rossum | 1968ad3 | 2006-02-25 22:38:04 +0000 | [diff] [blame] | 749 | def global_foo(x, y): return x+y |
| 750 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 751 | def test_main(): |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 752 | support.run_unittest(TestCopy) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 753 | |
| 754 | if __name__ == "__main__": |
| 755 | test_main() |