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 |
Alexandre Vassalotti | 5c1c3b4 | 2013-12-01 13:25:26 -0800 | [diff] [blame] | 6 | import abc |
Mark Dickinson | a56c467 | 2009-01-27 18:17:45 +0000 | [diff] [blame] | 7 | from operator import le, lt, ge, gt, eq, ne |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 8 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 9 | import unittest |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 10 | from test import support |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 11 | |
Mark Dickinson | a56c467 | 2009-01-27 18:17:45 +0000 | [diff] [blame] | 12 | order_comparisons = le, lt, ge, gt |
| 13 | equality_comparisons = eq, ne |
| 14 | comparisons = order_comparisons + equality_comparisons |
| 15 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 16 | class TestCopy(unittest.TestCase): |
| 17 | |
| 18 | # Attempt full line coverage of copy.py from top to bottom |
| 19 | |
| 20 | def test_exceptions(self): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 21 | self.assertIs(copy.Error, copy.error) |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 22 | self.assertTrue(issubclass(copy.Error, Exception)) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 23 | |
| 24 | # The copy() method |
| 25 | |
| 26 | def test_copy_basic(self): |
| 27 | x = 42 |
| 28 | y = copy.copy(x) |
| 29 | self.assertEqual(x, y) |
| 30 | |
| 31 | def test_copy_copy(self): |
| 32 | class C(object): |
| 33 | def __init__(self, foo): |
| 34 | self.foo = foo |
| 35 | def __copy__(self): |
| 36 | return C(self.foo) |
| 37 | x = C(42) |
| 38 | y = copy.copy(x) |
| 39 | self.assertEqual(y.__class__, x.__class__) |
| 40 | self.assertEqual(y.foo, x.foo) |
| 41 | |
Guido van Rossum | c06e3ac | 2003-02-07 17:30:18 +0000 | [diff] [blame] | 42 | def test_copy_registry(self): |
| 43 | class C(object): |
| 44 | def __new__(cls, foo): |
| 45 | obj = object.__new__(cls) |
| 46 | obj.foo = foo |
| 47 | return obj |
| 48 | def pickle_C(obj): |
| 49 | return (C, (obj.foo,)) |
| 50 | x = C(42) |
| 51 | self.assertRaises(TypeError, copy.copy, x) |
Alexandre Vassalotti | f7fa63d | 2008-05-11 08:55:36 +0000 | [diff] [blame] | 52 | copyreg.pickle(C, pickle_C, C) |
Guido van Rossum | c06e3ac | 2003-02-07 17:30:18 +0000 | [diff] [blame] | 53 | y = copy.copy(x) |
| 54 | |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 55 | def test_copy_reduce_ex(self): |
| 56 | class C(object): |
| 57 | def __reduce_ex__(self, proto): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 58 | c.append(1) |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 59 | return "" |
| 60 | def __reduce__(self): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 61 | self.fail("shouldn't call this") |
| 62 | c = [] |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 63 | x = C() |
| 64 | y = copy.copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 65 | self.assertIs(y, x) |
| 66 | self.assertEqual(c, [1]) |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 67 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 68 | def test_copy_reduce(self): |
| 69 | class C(object): |
| 70 | def __reduce__(self): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 71 | c.append(1) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 72 | return "" |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 73 | c = [] |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 74 | x = C() |
| 75 | y = copy.copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 76 | self.assertIs(y, x) |
| 77 | self.assertEqual(c, [1]) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 78 | |
| 79 | def test_copy_cant(self): |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 80 | class C(object): |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 81 | def __getattribute__(self, name): |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 82 | if name.startswith("__reduce"): |
Collin Winter | 3add4d7 | 2007-08-29 23:37:32 +0000 | [diff] [blame] | 83 | raise AttributeError(name) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 84 | return object.__getattribute__(self, name) |
| 85 | x = C() |
| 86 | self.assertRaises(copy.Error, copy.copy, x) |
| 87 | |
| 88 | # Type-specific _copy_xxx() methods |
| 89 | |
| 90 | def test_copy_atomic(self): |
| 91 | class Classic: |
| 92 | pass |
| 93 | class NewStyle(object): |
| 94 | pass |
| 95 | def f(): |
| 96 | pass |
Alexandre Vassalotti | 5c1c3b4 | 2013-12-01 13:25:26 -0800 | [diff] [blame] | 97 | class WithMetaclass(metaclass=abc.ABCMeta): |
| 98 | pass |
Guido van Rossum | e2a383d | 2007-01-15 16:59:06 +0000 | [diff] [blame] | 99 | tests = [None, 42, 2**100, 3.14, True, False, 1j, |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 100 | "hello", "hello\u1234", f.__code__, |
Antoine Pitrou | dc9215f | 2014-02-27 22:14:31 +0100 | [diff] [blame] | 101 | b"world", bytes(range(256)), |
Alexandre Vassalotti | 5c1c3b4 | 2013-12-01 13:25:26 -0800 | [diff] [blame] | 102 | NewStyle, range(10), Classic, max, WithMetaclass] |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 103 | for x in tests: |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 104 | self.assertIs(copy.copy(x), x) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 105 | |
| 106 | def test_copy_list(self): |
| 107 | x = [1, 2, 3] |
| 108 | self.assertEqual(copy.copy(x), x) |
| 109 | |
| 110 | def test_copy_tuple(self): |
| 111 | x = (1, 2, 3) |
| 112 | self.assertEqual(copy.copy(x), x) |
| 113 | |
| 114 | def test_copy_dict(self): |
| 115 | x = {"foo": 1, "bar": 2} |
| 116 | self.assertEqual(copy.copy(x), x) |
| 117 | |
| 118 | def test_copy_inst_vanilla(self): |
| 119 | class C: |
| 120 | def __init__(self, foo): |
| 121 | self.foo = foo |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 122 | def __eq__(self, other): |
| 123 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 124 | x = C(42) |
| 125 | self.assertEqual(copy.copy(x), x) |
| 126 | |
| 127 | def test_copy_inst_copy(self): |
| 128 | class C: |
| 129 | def __init__(self, foo): |
| 130 | self.foo = foo |
| 131 | def __copy__(self): |
| 132 | return C(self.foo) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 133 | def __eq__(self, other): |
| 134 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 135 | x = C(42) |
| 136 | self.assertEqual(copy.copy(x), x) |
| 137 | |
| 138 | def test_copy_inst_getinitargs(self): |
| 139 | class C: |
| 140 | def __init__(self, foo): |
| 141 | self.foo = foo |
| 142 | def __getinitargs__(self): |
| 143 | return (self.foo,) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 144 | def __eq__(self, other): |
| 145 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 146 | x = C(42) |
| 147 | self.assertEqual(copy.copy(x), x) |
| 148 | |
Serhiy Storchaka | 32af754 | 2015-03-24 18:06:42 +0200 | [diff] [blame] | 149 | def test_copy_inst_getnewargs(self): |
| 150 | class C(int): |
| 151 | def __new__(cls, foo): |
| 152 | self = int.__new__(cls) |
| 153 | self.foo = foo |
| 154 | return self |
| 155 | def __getnewargs__(self): |
| 156 | return self.foo, |
| 157 | def __eq__(self, other): |
| 158 | return self.foo == other.foo |
| 159 | x = C(42) |
| 160 | y = copy.copy(x) |
| 161 | self.assertIsInstance(y, C) |
| 162 | self.assertEqual(y, x) |
| 163 | self.assertIsNot(y, x) |
| 164 | self.assertEqual(y.foo, x.foo) |
| 165 | |
| 166 | def test_copy_inst_getnewargs_ex(self): |
| 167 | class C(int): |
| 168 | def __new__(cls, *, foo): |
| 169 | self = int.__new__(cls) |
| 170 | self.foo = foo |
| 171 | return self |
| 172 | def __getnewargs_ex__(self): |
| 173 | return (), {'foo': self.foo} |
| 174 | def __eq__(self, other): |
| 175 | return self.foo == other.foo |
| 176 | x = C(foo=42) |
| 177 | y = copy.copy(x) |
| 178 | self.assertIsInstance(y, C) |
| 179 | self.assertEqual(y, x) |
| 180 | self.assertIsNot(y, x) |
| 181 | self.assertEqual(y.foo, x.foo) |
| 182 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 183 | def test_copy_inst_getstate(self): |
| 184 | class C: |
| 185 | def __init__(self, foo): |
| 186 | self.foo = foo |
| 187 | def __getstate__(self): |
| 188 | return {"foo": self.foo} |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 189 | def __eq__(self, other): |
| 190 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 191 | x = C(42) |
| 192 | self.assertEqual(copy.copy(x), x) |
| 193 | |
| 194 | def test_copy_inst_setstate(self): |
| 195 | class C: |
| 196 | def __init__(self, foo): |
| 197 | self.foo = foo |
| 198 | def __setstate__(self, state): |
| 199 | self.foo = state["foo"] |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 200 | def __eq__(self, other): |
| 201 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 202 | x = C(42) |
| 203 | self.assertEqual(copy.copy(x), x) |
| 204 | |
| 205 | def test_copy_inst_getstate_setstate(self): |
| 206 | class C: |
| 207 | def __init__(self, foo): |
| 208 | self.foo = foo |
| 209 | def __getstate__(self): |
| 210 | return self.foo |
| 211 | def __setstate__(self, state): |
| 212 | self.foo = state |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 213 | def __eq__(self, other): |
| 214 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 215 | x = C(42) |
| 216 | self.assertEqual(copy.copy(x), x) |
| 217 | |
| 218 | # The deepcopy() method |
| 219 | |
| 220 | def test_deepcopy_basic(self): |
| 221 | x = 42 |
| 222 | y = copy.deepcopy(x) |
| 223 | self.assertEqual(y, x) |
| 224 | |
| 225 | def test_deepcopy_memo(self): |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 226 | # Tests of reflexive objects are under type-specific sections below. |
| 227 | # This tests only repetitions of objects. |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 228 | x = [] |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 229 | x = [x, x] |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 230 | y = copy.deepcopy(x) |
| 231 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 232 | self.assertIsNot(y, x) |
| 233 | self.assertIsNot(y[0], x[0]) |
| 234 | self.assertIs(y[0], y[1]) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 235 | |
| 236 | def test_deepcopy_issubclass(self): |
| 237 | # XXX Note: there's no way to test the TypeError coming out of |
| 238 | # issubclass() -- this can only happen when an extension |
| 239 | # module defines a "type" that doesn't formally inherit from |
| 240 | # type. |
| 241 | class Meta(type): |
| 242 | pass |
Guido van Rossum | 52cc1d8 | 2007-03-18 15:41:51 +0000 | [diff] [blame] | 243 | class C(metaclass=Meta): |
| 244 | pass |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 245 | self.assertEqual(copy.deepcopy(C), C) |
| 246 | |
| 247 | def test_deepcopy_deepcopy(self): |
| 248 | class C(object): |
| 249 | def __init__(self, foo): |
| 250 | self.foo = foo |
| 251 | def __deepcopy__(self, memo=None): |
| 252 | return C(self.foo) |
| 253 | x = C(42) |
| 254 | y = copy.deepcopy(x) |
| 255 | self.assertEqual(y.__class__, x.__class__) |
| 256 | self.assertEqual(y.foo, x.foo) |
| 257 | |
Guido van Rossum | c06e3ac | 2003-02-07 17:30:18 +0000 | [diff] [blame] | 258 | def test_deepcopy_registry(self): |
| 259 | class C(object): |
| 260 | def __new__(cls, foo): |
| 261 | obj = object.__new__(cls) |
| 262 | obj.foo = foo |
| 263 | return obj |
| 264 | def pickle_C(obj): |
| 265 | return (C, (obj.foo,)) |
| 266 | x = C(42) |
| 267 | self.assertRaises(TypeError, copy.deepcopy, x) |
Alexandre Vassalotti | f7fa63d | 2008-05-11 08:55:36 +0000 | [diff] [blame] | 268 | copyreg.pickle(C, pickle_C, C) |
Guido van Rossum | c06e3ac | 2003-02-07 17:30:18 +0000 | [diff] [blame] | 269 | y = copy.deepcopy(x) |
| 270 | |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 271 | def test_deepcopy_reduce_ex(self): |
| 272 | class C(object): |
| 273 | def __reduce_ex__(self, proto): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 274 | c.append(1) |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 275 | return "" |
| 276 | def __reduce__(self): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 277 | self.fail("shouldn't call this") |
| 278 | c = [] |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 279 | x = C() |
| 280 | y = copy.deepcopy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 281 | self.assertIs(y, x) |
| 282 | self.assertEqual(c, [1]) |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 283 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 284 | def test_deepcopy_reduce(self): |
| 285 | class C(object): |
| 286 | def __reduce__(self): |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 287 | c.append(1) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 288 | return "" |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 289 | c = [] |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 290 | x = C() |
| 291 | y = copy.deepcopy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 292 | self.assertIs(y, x) |
| 293 | self.assertEqual(c, [1]) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 294 | |
| 295 | def test_deepcopy_cant(self): |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 296 | class C(object): |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 297 | def __getattribute__(self, name): |
Guido van Rossum | e690883 | 2003-02-19 01:19:28 +0000 | [diff] [blame] | 298 | if name.startswith("__reduce"): |
Collin Winter | 3add4d7 | 2007-08-29 23:37:32 +0000 | [diff] [blame] | 299 | raise AttributeError(name) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 300 | return object.__getattribute__(self, name) |
| 301 | x = C() |
| 302 | self.assertRaises(copy.Error, copy.deepcopy, x) |
| 303 | |
| 304 | # Type-specific _deepcopy_xxx() methods |
| 305 | |
| 306 | def test_deepcopy_atomic(self): |
| 307 | class Classic: |
| 308 | pass |
| 309 | class NewStyle(object): |
| 310 | pass |
| 311 | def f(): |
| 312 | pass |
Guido van Rossum | e2a383d | 2007-01-15 16:59:06 +0000 | [diff] [blame] | 313 | tests = [None, 42, 2**100, 3.14, True, False, 1j, |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 314 | "hello", "hello\u1234", f.__code__, |
Guido van Rossum | 805365e | 2007-05-07 22:24:25 +0000 | [diff] [blame] | 315 | NewStyle, range(10), Classic, max] |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 316 | for x in tests: |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 317 | self.assertIs(copy.deepcopy(x), x) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 318 | |
| 319 | def test_deepcopy_list(self): |
| 320 | x = [[1, 2], 3] |
| 321 | y = copy.deepcopy(x) |
| 322 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 323 | self.assertIsNot(x, y) |
| 324 | self.assertIsNot(x[0], y[0]) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 325 | |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 326 | def test_deepcopy_reflexive_list(self): |
| 327 | x = [] |
| 328 | x.append(x) |
| 329 | y = copy.deepcopy(x) |
Mark Dickinson | a56c467 | 2009-01-27 18:17:45 +0000 | [diff] [blame] | 330 | for op in comparisons: |
| 331 | self.assertRaises(RuntimeError, op, y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 332 | self.assertIsNot(y, x) |
| 333 | self.assertIs(y[0], y) |
Armin Rigo | 2b3eb40 | 2003-10-28 12:05:48 +0000 | [diff] [blame] | 334 | self.assertEqual(len(y), 1) |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 335 | |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 336 | def test_deepcopy_empty_tuple(self): |
| 337 | x = () |
| 338 | y = copy.deepcopy(x) |
| 339 | self.assertIs(x, y) |
| 340 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 341 | def test_deepcopy_tuple(self): |
| 342 | x = ([1, 2], 3) |
| 343 | y = copy.deepcopy(x) |
| 344 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 345 | self.assertIsNot(x, y) |
| 346 | self.assertIsNot(x[0], y[0]) |
| 347 | |
| 348 | def test_deepcopy_tuple_of_immutables(self): |
| 349 | x = ((1, 2), 3) |
| 350 | y = copy.deepcopy(x) |
| 351 | self.assertIs(x, y) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 352 | |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 353 | def test_deepcopy_reflexive_tuple(self): |
| 354 | x = ([],) |
| 355 | x[0].append(x) |
| 356 | y = copy.deepcopy(x) |
Mark Dickinson | a56c467 | 2009-01-27 18:17:45 +0000 | [diff] [blame] | 357 | for op in comparisons: |
| 358 | self.assertRaises(RuntimeError, op, y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 359 | self.assertIsNot(y, x) |
| 360 | self.assertIsNot(y[0], x[0]) |
| 361 | self.assertIs(y[0][0], y) |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 362 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 363 | def test_deepcopy_dict(self): |
| 364 | x = {"foo": [1, 2], "bar": 3} |
| 365 | y = copy.deepcopy(x) |
| 366 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 367 | self.assertIsNot(x, y) |
| 368 | self.assertIsNot(x["foo"], y["foo"]) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 369 | |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 370 | def test_deepcopy_reflexive_dict(self): |
| 371 | x = {} |
| 372 | x['foo'] = x |
| 373 | y = copy.deepcopy(x) |
Mark Dickinson | a56c467 | 2009-01-27 18:17:45 +0000 | [diff] [blame] | 374 | for op in order_comparisons: |
| 375 | self.assertRaises(TypeError, op, y, x) |
| 376 | for op in equality_comparisons: |
| 377 | self.assertRaises(RuntimeError, op, y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 378 | self.assertIsNot(y, x) |
| 379 | self.assertIs(y['foo'], y) |
Armin Rigo | 2b3eb40 | 2003-10-28 12:05:48 +0000 | [diff] [blame] | 380 | self.assertEqual(len(y), 1) |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 381 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 382 | def test_deepcopy_keepalive(self): |
| 383 | memo = {} |
Benjamin Peterson | e90ec36 | 2011-06-27 16:22:46 -0500 | [diff] [blame] | 384 | x = [] |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 385 | y = copy.deepcopy(x, memo) |
Benjamin Peterson | e90ec36 | 2011-06-27 16:22:46 -0500 | [diff] [blame] | 386 | self.assertIs(memo[id(memo)][0], x) |
| 387 | |
| 388 | def test_deepcopy_dont_memo_immutable(self): |
| 389 | memo = {} |
| 390 | x = [1, 2, 3, 4] |
| 391 | y = copy.deepcopy(x, memo) |
| 392 | self.assertEqual(y, x) |
| 393 | # There's the entry for the new list, and the keep alive. |
| 394 | self.assertEqual(len(memo), 2) |
| 395 | |
| 396 | memo = {} |
| 397 | x = [(1, 2)] |
| 398 | y = copy.deepcopy(x, memo) |
| 399 | self.assertEqual(y, x) |
| 400 | # Tuples with immutable contents are immutable for deepcopy. |
| 401 | self.assertEqual(len(memo), 2) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 402 | |
| 403 | def test_deepcopy_inst_vanilla(self): |
| 404 | class C: |
| 405 | def __init__(self, foo): |
| 406 | self.foo = foo |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 407 | def __eq__(self, other): |
| 408 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 409 | x = C([42]) |
| 410 | y = copy.deepcopy(x) |
| 411 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 412 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 413 | |
| 414 | def test_deepcopy_inst_deepcopy(self): |
| 415 | class C: |
| 416 | def __init__(self, foo): |
| 417 | self.foo = foo |
| 418 | def __deepcopy__(self, memo): |
| 419 | return C(copy.deepcopy(self.foo, memo)) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 420 | def __eq__(self, other): |
| 421 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 422 | x = C([42]) |
| 423 | y = copy.deepcopy(x) |
| 424 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 425 | self.assertIsNot(y, x) |
| 426 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 427 | |
| 428 | def test_deepcopy_inst_getinitargs(self): |
| 429 | class C: |
| 430 | def __init__(self, foo): |
| 431 | self.foo = foo |
| 432 | def __getinitargs__(self): |
| 433 | return (self.foo,) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 434 | def __eq__(self, other): |
| 435 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 436 | x = C([42]) |
| 437 | y = copy.deepcopy(x) |
| 438 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 439 | self.assertIsNot(y, x) |
| 440 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 441 | |
Serhiy Storchaka | 32af754 | 2015-03-24 18:06:42 +0200 | [diff] [blame] | 442 | def test_deepcopy_inst_getnewargs(self): |
| 443 | class C(int): |
| 444 | def __new__(cls, foo): |
| 445 | self = int.__new__(cls) |
| 446 | self.foo = foo |
| 447 | return self |
| 448 | def __getnewargs__(self): |
| 449 | return self.foo, |
| 450 | def __eq__(self, other): |
| 451 | return self.foo == other.foo |
| 452 | x = C([42]) |
| 453 | y = copy.deepcopy(x) |
| 454 | self.assertIsInstance(y, C) |
| 455 | self.assertEqual(y, x) |
| 456 | self.assertIsNot(y, x) |
| 457 | self.assertEqual(y.foo, x.foo) |
| 458 | self.assertIsNot(y.foo, x.foo) |
| 459 | |
| 460 | def test_deepcopy_inst_getnewargs_ex(self): |
| 461 | class C(int): |
| 462 | def __new__(cls, *, foo): |
| 463 | self = int.__new__(cls) |
| 464 | self.foo = foo |
| 465 | return self |
| 466 | def __getnewargs_ex__(self): |
| 467 | return (), {'foo': self.foo} |
| 468 | def __eq__(self, other): |
| 469 | return self.foo == other.foo |
| 470 | x = C(foo=[42]) |
| 471 | y = copy.deepcopy(x) |
| 472 | self.assertIsInstance(y, C) |
| 473 | self.assertEqual(y, x) |
| 474 | self.assertIsNot(y, x) |
| 475 | self.assertEqual(y.foo, x.foo) |
| 476 | self.assertIsNot(y.foo, x.foo) |
| 477 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 478 | def test_deepcopy_inst_getstate(self): |
| 479 | class C: |
| 480 | def __init__(self, foo): |
| 481 | self.foo = foo |
| 482 | def __getstate__(self): |
| 483 | return {"foo": self.foo} |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 484 | def __eq__(self, other): |
| 485 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 486 | x = C([42]) |
| 487 | y = copy.deepcopy(x) |
| 488 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 489 | self.assertIsNot(y, x) |
| 490 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 491 | |
| 492 | def test_deepcopy_inst_setstate(self): |
| 493 | class C: |
| 494 | def __init__(self, foo): |
| 495 | self.foo = foo |
| 496 | def __setstate__(self, state): |
| 497 | self.foo = state["foo"] |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 498 | def __eq__(self, other): |
| 499 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 500 | x = C([42]) |
| 501 | y = copy.deepcopy(x) |
| 502 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 503 | self.assertIsNot(y, x) |
| 504 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 505 | |
| 506 | def test_deepcopy_inst_getstate_setstate(self): |
| 507 | class C: |
| 508 | def __init__(self, foo): |
| 509 | self.foo = foo |
| 510 | def __getstate__(self): |
| 511 | return self.foo |
| 512 | def __setstate__(self, state): |
| 513 | self.foo = state |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 514 | def __eq__(self, other): |
| 515 | return self.foo == other.foo |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 516 | x = C([42]) |
| 517 | y = copy.deepcopy(x) |
| 518 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 519 | self.assertIsNot(y, x) |
| 520 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 521 | |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 522 | def test_deepcopy_reflexive_inst(self): |
| 523 | class C: |
| 524 | pass |
| 525 | x = C() |
| 526 | x.foo = x |
| 527 | y = copy.deepcopy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 528 | self.assertIsNot(y, x) |
| 529 | self.assertIs(y.foo, y) |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 530 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 531 | # _reconstruct() |
| 532 | |
| 533 | def test_reconstruct_string(self): |
| 534 | class C(object): |
| 535 | def __reduce__(self): |
| 536 | return "" |
| 537 | x = C() |
| 538 | y = copy.copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 539 | self.assertIs(y, x) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 540 | y = copy.deepcopy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 541 | self.assertIs(y, x) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 542 | |
| 543 | def test_reconstruct_nostate(self): |
| 544 | class C(object): |
| 545 | def __reduce__(self): |
| 546 | return (C, ()) |
| 547 | x = C() |
| 548 | x.foo = 42 |
| 549 | y = copy.copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 550 | self.assertIs(y.__class__, x.__class__) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 551 | y = copy.deepcopy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 552 | self.assertIs(y.__class__, x.__class__) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 553 | |
| 554 | def test_reconstruct_state(self): |
| 555 | class C(object): |
| 556 | def __reduce__(self): |
| 557 | return (C, (), self.__dict__) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 558 | def __eq__(self, other): |
| 559 | return self.__dict__ == other.__dict__ |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 560 | x = C() |
| 561 | x.foo = [42] |
| 562 | y = copy.copy(x) |
| 563 | self.assertEqual(y, x) |
| 564 | y = copy.deepcopy(x) |
| 565 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 566 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 567 | |
| 568 | def test_reconstruct_state_setstate(self): |
| 569 | class C(object): |
| 570 | def __reduce__(self): |
| 571 | return (C, (), self.__dict__) |
| 572 | def __setstate__(self, state): |
| 573 | self.__dict__.update(state) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 574 | def __eq__(self, other): |
| 575 | return self.__dict__ == other.__dict__ |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 576 | x = C() |
| 577 | x.foo = [42] |
| 578 | y = copy.copy(x) |
| 579 | self.assertEqual(y, x) |
| 580 | y = copy.deepcopy(x) |
| 581 | self.assertEqual(y, x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 582 | self.assertIsNot(y.foo, x.foo) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 583 | |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 584 | def test_reconstruct_reflexive(self): |
| 585 | class C(object): |
| 586 | pass |
| 587 | x = C() |
| 588 | x.foo = x |
| 589 | y = copy.deepcopy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 590 | self.assertIsNot(y, x) |
| 591 | self.assertIs(y.foo, y) |
Guido van Rossum | 99d2c25 | 2003-06-13 19:28:47 +0000 | [diff] [blame] | 592 | |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 593 | # Additions for Python 2.3 and pickle protocol 2 |
| 594 | |
| 595 | def test_reduce_4tuple(self): |
| 596 | class C(list): |
| 597 | def __reduce__(self): |
| 598 | return (C, (), self.__dict__, iter(self)) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 599 | def __eq__(self, other): |
| 600 | return (list(self) == list(other) and |
| 601 | self.__dict__ == other.__dict__) |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 602 | x = C([[1, 2], 3]) |
| 603 | y = copy.copy(x) |
| 604 | self.assertEqual(x, y) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 605 | self.assertIsNot(x, y) |
| 606 | self.assertIs(x[0], y[0]) |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 607 | y = copy.deepcopy(x) |
| 608 | self.assertEqual(x, y) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 609 | self.assertIsNot(x, y) |
| 610 | self.assertIsNot(x[0], y[0]) |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 611 | |
| 612 | def test_reduce_5tuple(self): |
| 613 | class C(dict): |
| 614 | def __reduce__(self): |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 615 | return (C, (), self.__dict__, None, self.items()) |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 616 | def __eq__(self, other): |
| 617 | return (dict(self) == dict(other) and |
| 618 | self.__dict__ == other.__dict__) |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 619 | x = C([("foo", [1, 2]), ("bar", 3)]) |
| 620 | y = copy.copy(x) |
| 621 | self.assertEqual(x, y) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 622 | self.assertIsNot(x, y) |
| 623 | self.assertIs(x["foo"], y["foo"]) |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 624 | y = copy.deepcopy(x) |
| 625 | self.assertEqual(x, y) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 626 | self.assertIsNot(x, y) |
| 627 | self.assertIsNot(x["foo"], y["foo"]) |
Guido van Rossum | 90e05b0 | 2003-02-06 18:18:23 +0000 | [diff] [blame] | 628 | |
Guido van Rossum | c755758 | 2003-02-06 19:53:22 +0000 | [diff] [blame] | 629 | def test_copy_slots(self): |
| 630 | class C(object): |
| 631 | __slots__ = ["foo"] |
| 632 | x = C() |
| 633 | x.foo = [42] |
| 634 | y = copy.copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 635 | self.assertIs(x.foo, y.foo) |
Guido van Rossum | c755758 | 2003-02-06 19:53:22 +0000 | [diff] [blame] | 636 | |
| 637 | def test_deepcopy_slots(self): |
| 638 | class C(object): |
| 639 | __slots__ = ["foo"] |
| 640 | x = C() |
| 641 | x.foo = [42] |
| 642 | y = copy.deepcopy(x) |
| 643 | self.assertEqual(x.foo, y.foo) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 644 | self.assertIsNot(x.foo, y.foo) |
Guido van Rossum | c755758 | 2003-02-06 19:53:22 +0000 | [diff] [blame] | 645 | |
Antoine Pitrou | 3941a8f | 2010-09-04 17:40:21 +0000 | [diff] [blame] | 646 | def test_deepcopy_dict_subclass(self): |
| 647 | class C(dict): |
| 648 | def __init__(self, d=None): |
| 649 | if not d: |
| 650 | d = {} |
| 651 | self._keys = list(d.keys()) |
| 652 | super().__init__(d) |
| 653 | def __setitem__(self, key, item): |
| 654 | super().__setitem__(key, item) |
| 655 | if key not in self._keys: |
| 656 | self._keys.append(key) |
| 657 | x = C(d={'foo':0}) |
| 658 | y = copy.deepcopy(x) |
| 659 | self.assertEqual(x, y) |
| 660 | self.assertEqual(x._keys, y._keys) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 661 | self.assertIsNot(x, y) |
Antoine Pitrou | 3941a8f | 2010-09-04 17:40:21 +0000 | [diff] [blame] | 662 | x['bar'] = 1 |
| 663 | self.assertNotEqual(x, y) |
| 664 | self.assertNotEqual(x._keys, y._keys) |
| 665 | |
Guido van Rossum | c755758 | 2003-02-06 19:53:22 +0000 | [diff] [blame] | 666 | def test_copy_list_subclass(self): |
| 667 | class C(list): |
| 668 | pass |
| 669 | x = C([[1, 2], 3]) |
| 670 | x.foo = [4, 5] |
| 671 | y = copy.copy(x) |
| 672 | self.assertEqual(list(x), list(y)) |
| 673 | self.assertEqual(x.foo, y.foo) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 674 | self.assertIs(x[0], y[0]) |
| 675 | self.assertIs(x.foo, y.foo) |
Guido van Rossum | c755758 | 2003-02-06 19:53:22 +0000 | [diff] [blame] | 676 | |
| 677 | def test_deepcopy_list_subclass(self): |
| 678 | class C(list): |
| 679 | pass |
| 680 | x = C([[1, 2], 3]) |
| 681 | x.foo = [4, 5] |
| 682 | y = copy.deepcopy(x) |
| 683 | self.assertEqual(list(x), list(y)) |
| 684 | self.assertEqual(x.foo, y.foo) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 685 | self.assertIsNot(x[0], y[0]) |
| 686 | self.assertIsNot(x.foo, y.foo) |
Guido van Rossum | c755758 | 2003-02-06 19:53:22 +0000 | [diff] [blame] | 687 | |
Guido van Rossum | 85233bf | 2003-02-06 21:25:12 +0000 | [diff] [blame] | 688 | def test_copy_tuple_subclass(self): |
| 689 | class C(tuple): |
| 690 | pass |
| 691 | x = C([1, 2, 3]) |
| 692 | self.assertEqual(tuple(x), (1, 2, 3)) |
| 693 | y = copy.copy(x) |
| 694 | self.assertEqual(tuple(y), (1, 2, 3)) |
| 695 | |
| 696 | def test_deepcopy_tuple_subclass(self): |
| 697 | class C(tuple): |
| 698 | pass |
| 699 | x = C([[1, 2], 3]) |
| 700 | self.assertEqual(tuple(x), ([1, 2], 3)) |
| 701 | y = copy.deepcopy(x) |
| 702 | self.assertEqual(tuple(y), ([1, 2], 3)) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 703 | self.assertIsNot(x, y) |
| 704 | self.assertIsNot(x[0], y[0]) |
Guido van Rossum | 85233bf | 2003-02-06 21:25:12 +0000 | [diff] [blame] | 705 | |
Neal Norwitz | e2fdc61 | 2003-06-08 13:19:58 +0000 | [diff] [blame] | 706 | def test_getstate_exc(self): |
| 707 | class EvilState(object): |
| 708 | def __getstate__(self): |
Collin Winter | 3add4d7 | 2007-08-29 23:37:32 +0000 | [diff] [blame] | 709 | raise ValueError("ain't got no stickin' state") |
Neal Norwitz | e2fdc61 | 2003-06-08 13:19:58 +0000 | [diff] [blame] | 710 | self.assertRaises(ValueError, copy.copy, EvilState()) |
| 711 | |
Guido van Rossum | 1968ad3 | 2006-02-25 22:38:04 +0000 | [diff] [blame] | 712 | def test_copy_function(self): |
| 713 | self.assertEqual(copy.copy(global_foo), global_foo) |
| 714 | def foo(x, y): return x+y |
| 715 | self.assertEqual(copy.copy(foo), foo) |
| 716 | bar = lambda: None |
| 717 | self.assertEqual(copy.copy(bar), bar) |
| 718 | |
| 719 | def test_deepcopy_function(self): |
| 720 | self.assertEqual(copy.deepcopy(global_foo), global_foo) |
| 721 | def foo(x, y): return x+y |
| 722 | self.assertEqual(copy.deepcopy(foo), foo) |
| 723 | bar = lambda: None |
| 724 | self.assertEqual(copy.deepcopy(bar), bar) |
| 725 | |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 726 | def _check_weakref(self, _copy): |
| 727 | class C(object): |
| 728 | pass |
| 729 | obj = C() |
| 730 | x = weakref.ref(obj) |
| 731 | y = _copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 732 | self.assertIs(y, x) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 733 | del obj |
| 734 | y = _copy(x) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 735 | self.assertIs(y, x) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 736 | |
| 737 | def test_copy_weakref(self): |
| 738 | self._check_weakref(copy.copy) |
| 739 | |
| 740 | def test_deepcopy_weakref(self): |
| 741 | self._check_weakref(copy.deepcopy) |
| 742 | |
| 743 | def _check_copy_weakdict(self, _dicttype): |
| 744 | class C(object): |
| 745 | pass |
| 746 | a, b, c, d = [C() for i in range(4)] |
| 747 | u = _dicttype() |
| 748 | u[a] = b |
| 749 | u[c] = d |
| 750 | v = copy.copy(u) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 751 | self.assertIsNot(v, u) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 752 | self.assertEqual(v, u) |
| 753 | self.assertEqual(v[a], b) |
| 754 | self.assertEqual(v[c], d) |
| 755 | self.assertEqual(len(v), 2) |
| 756 | del c, d |
| 757 | self.assertEqual(len(v), 1) |
| 758 | x, y = C(), C() |
| 759 | # The underlying containers are decoupled |
| 760 | v[x] = y |
Ezio Melotti | b58e0bd | 2010-01-23 15:40:09 +0000 | [diff] [blame] | 761 | self.assertNotIn(x, u) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 762 | |
| 763 | def test_copy_weakkeydict(self): |
| 764 | self._check_copy_weakdict(weakref.WeakKeyDictionary) |
| 765 | |
| 766 | def test_copy_weakvaluedict(self): |
| 767 | self._check_copy_weakdict(weakref.WeakValueDictionary) |
| 768 | |
| 769 | def test_deepcopy_weakkeydict(self): |
| 770 | class C(object): |
| 771 | def __init__(self, i): |
| 772 | self.i = i |
| 773 | a, b, c, d = [C(i) for i in range(4)] |
| 774 | u = weakref.WeakKeyDictionary() |
| 775 | u[a] = b |
| 776 | u[c] = d |
| 777 | # Keys aren't copied, values are |
| 778 | v = copy.deepcopy(u) |
| 779 | self.assertNotEqual(v, u) |
| 780 | self.assertEqual(len(v), 2) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 781 | self.assertIsNot(v[a], b) |
| 782 | self.assertIsNot(v[c], d) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 783 | self.assertEqual(v[a].i, b.i) |
| 784 | self.assertEqual(v[c].i, d.i) |
| 785 | del c |
| 786 | self.assertEqual(len(v), 1) |
| 787 | |
| 788 | def test_deepcopy_weakvaluedict(self): |
| 789 | class C(object): |
| 790 | def __init__(self, i): |
| 791 | self.i = i |
| 792 | a, b, c, d = [C(i) for i in range(4)] |
| 793 | u = weakref.WeakValueDictionary() |
| 794 | u[a] = b |
| 795 | u[c] = d |
| 796 | # Keys are copied, values aren't |
| 797 | v = copy.deepcopy(u) |
| 798 | self.assertNotEqual(v, u) |
| 799 | self.assertEqual(len(v), 2) |
| 800 | (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] | 801 | self.assertIsNot(x, a) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 802 | self.assertEqual(x.i, a.i) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 803 | self.assertIs(y, b) |
| 804 | self.assertIsNot(z, c) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 805 | self.assertEqual(z.i, c.i) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 806 | self.assertIs(t, d) |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 807 | del x, y, z, t |
| 808 | del d |
| 809 | self.assertEqual(len(v), 1) |
| 810 | |
Antoine Pitrou | 1fc0d2b | 2009-11-28 15:58:27 +0000 | [diff] [blame] | 811 | def test_deepcopy_bound_method(self): |
| 812 | class Foo(object): |
| 813 | def m(self): |
| 814 | pass |
| 815 | f = Foo() |
| 816 | f.b = f.m |
| 817 | g = copy.deepcopy(f) |
| 818 | self.assertEqual(g.m, g.b) |
Sandro Tosi | 4dc9c84 | 2011-08-05 23:05:35 +0200 | [diff] [blame] | 819 | self.assertIs(g.b.__self__, g) |
Antoine Pitrou | 1fc0d2b | 2009-11-28 15:58:27 +0000 | [diff] [blame] | 820 | g.b() |
| 821 | |
Antoine Pitrou | 6e61006 | 2009-05-15 17:04:50 +0000 | [diff] [blame] | 822 | |
Guido van Rossum | 1968ad3 | 2006-02-25 22:38:04 +0000 | [diff] [blame] | 823 | def global_foo(x, y): return x+y |
| 824 | |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 825 | def test_main(): |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 826 | support.run_unittest(TestCopy) |
Guido van Rossum | 581cb93 | 2003-02-06 17:52:15 +0000 | [diff] [blame] | 827 | |
| 828 | if __name__ == "__main__": |
| 829 | test_main() |