Christian Heimes | 7b6fc8e | 2007-11-08 02:28:11 +0000 | [diff] [blame] | 1 | """Unit tests for the memoryview |
| 2 | |
| 3 | XXX We need more tests! Some tests are in test_bytes |
| 4 | """ |
| 5 | |
| 6 | import unittest |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 7 | import test.support |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 8 | import sys |
Antoine Pitrou | c6b09eb | 2008-09-01 15:10:14 +0000 | [diff] [blame] | 9 | import gc |
| 10 | import weakref |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 11 | import array |
Antoine Pitrou | ad62b03 | 2011-01-18 18:57:52 +0000 | [diff] [blame] | 12 | import io |
Christian Heimes | 7b6fc8e | 2007-11-08 02:28:11 +0000 | [diff] [blame] | 13 | |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 14 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 15 | class AbstractMemoryTests: |
| 16 | source_bytes = b"abcdef" |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 17 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 18 | @property |
| 19 | def _source(self): |
| 20 | return self.source_bytes |
| 21 | |
| 22 | @property |
| 23 | def _types(self): |
| 24 | return filter(None, [self.ro_type, self.rw_type]) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 25 | |
| 26 | def check_getitem_with_type(self, tp): |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 27 | item = self.getitem_type |
| 28 | b = tp(self._source) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 29 | oldrefcount = sys.getrefcount(b) |
| 30 | m = self._view(b) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 31 | self.assertEqual(m[0], item(b"a")) |
Ezio Melotti | e961593 | 2010-01-24 19:26:24 +0000 | [diff] [blame] | 32 | self.assertIsInstance(m[0], bytes) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 33 | self.assertEqual(m[5], item(b"f")) |
| 34 | self.assertEqual(m[-1], item(b"f")) |
| 35 | self.assertEqual(m[-6], item(b"a")) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 36 | # Bounds checking |
| 37 | self.assertRaises(IndexError, lambda: m[6]) |
| 38 | self.assertRaises(IndexError, lambda: m[-7]) |
| 39 | self.assertRaises(IndexError, lambda: m[sys.maxsize]) |
| 40 | self.assertRaises(IndexError, lambda: m[-sys.maxsize]) |
| 41 | # Type checking |
| 42 | self.assertRaises(TypeError, lambda: m[None]) |
| 43 | self.assertRaises(TypeError, lambda: m[0.0]) |
| 44 | self.assertRaises(TypeError, lambda: m["a"]) |
| 45 | m = None |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 46 | self.assertEqual(sys.getrefcount(b), oldrefcount) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 47 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 48 | def test_getitem(self): |
| 49 | for tp in self._types: |
| 50 | self.check_getitem_with_type(tp) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 51 | |
Raymond Hettinger | 159eac9 | 2009-06-23 20:38:54 +0000 | [diff] [blame] | 52 | def test_iter(self): |
| 53 | for tp in self._types: |
| 54 | b = tp(self._source) |
| 55 | m = self._view(b) |
| 56 | self.assertEqual(list(m), [m[i] for i in range(len(m))]) |
| 57 | |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 58 | def test_setitem_readonly(self): |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 59 | if not self.ro_type: |
| 60 | return |
| 61 | b = self.ro_type(self._source) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 62 | oldrefcount = sys.getrefcount(b) |
| 63 | m = self._view(b) |
| 64 | def setitem(value): |
| 65 | m[0] = value |
| 66 | self.assertRaises(TypeError, setitem, b"a") |
| 67 | self.assertRaises(TypeError, setitem, 65) |
| 68 | self.assertRaises(TypeError, setitem, memoryview(b"a")) |
| 69 | m = None |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 70 | self.assertEqual(sys.getrefcount(b), oldrefcount) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 71 | |
| 72 | def test_setitem_writable(self): |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 73 | if not self.rw_type: |
| 74 | return |
| 75 | tp = self.rw_type |
| 76 | b = self.rw_type(self._source) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 77 | oldrefcount = sys.getrefcount(b) |
| 78 | m = self._view(b) |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 79 | m[0] = tp(b"0") |
| 80 | self._check_contents(tp, b, b"0bcdef") |
| 81 | m[1:3] = tp(b"12") |
| 82 | self._check_contents(tp, b, b"012def") |
| 83 | m[1:1] = tp(b"") |
| 84 | self._check_contents(tp, b, b"012def") |
| 85 | m[:] = tp(b"abcdef") |
| 86 | self._check_contents(tp, b, b"abcdef") |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 87 | |
| 88 | # Overlapping copies of a view into itself |
| 89 | m[0:3] = m[2:5] |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 90 | self._check_contents(tp, b, b"cdedef") |
| 91 | m[:] = tp(b"abcdef") |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 92 | m[2:5] = m[0:3] |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 93 | self._check_contents(tp, b, b"ababcf") |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 94 | |
| 95 | def setitem(key, value): |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 96 | m[key] = tp(value) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 97 | # Bounds checking |
| 98 | self.assertRaises(IndexError, setitem, 6, b"a") |
| 99 | self.assertRaises(IndexError, setitem, -7, b"a") |
| 100 | self.assertRaises(IndexError, setitem, sys.maxsize, b"a") |
| 101 | self.assertRaises(IndexError, setitem, -sys.maxsize, b"a") |
| 102 | # Wrong index/slice types |
| 103 | self.assertRaises(TypeError, setitem, 0.0, b"a") |
| 104 | self.assertRaises(TypeError, setitem, (0,), b"a") |
| 105 | self.assertRaises(TypeError, setitem, "a", b"a") |
| 106 | # Trying to resize the memory object |
| 107 | self.assertRaises(ValueError, setitem, 0, b"") |
| 108 | self.assertRaises(ValueError, setitem, 0, b"ab") |
| 109 | self.assertRaises(ValueError, setitem, slice(1,1), b"a") |
| 110 | self.assertRaises(ValueError, setitem, slice(0,2), b"a") |
| 111 | |
| 112 | m = None |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 113 | self.assertEqual(sys.getrefcount(b), oldrefcount) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 114 | |
Antoine Pitrou | e0793ba | 2010-09-01 21:14:16 +0000 | [diff] [blame] | 115 | def test_delitem(self): |
| 116 | for tp in self._types: |
| 117 | b = tp(self._source) |
| 118 | m = self._view(b) |
| 119 | with self.assertRaises(TypeError): |
| 120 | del m[1] |
| 121 | with self.assertRaises(TypeError): |
| 122 | del m[1:4] |
| 123 | |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 124 | def test_tobytes(self): |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 125 | for tp in self._types: |
| 126 | m = self._view(tp(self._source)) |
| 127 | b = m.tobytes() |
| 128 | # This calls self.getitem_type() on each separate byte of b"abcdef" |
| 129 | expected = b"".join( |
| 130 | self.getitem_type(bytes([c])) for c in b"abcdef") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 131 | self.assertEqual(b, expected) |
Ezio Melotti | e961593 | 2010-01-24 19:26:24 +0000 | [diff] [blame] | 132 | self.assertIsInstance(b, bytes) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 133 | |
| 134 | def test_tolist(self): |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 135 | for tp in self._types: |
| 136 | m = self._view(tp(self._source)) |
| 137 | l = m.tolist() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 138 | self.assertEqual(l, list(b"abcdef")) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 139 | |
| 140 | def test_compare(self): |
| 141 | # memoryviews can compare for equality with other objects |
| 142 | # having the buffer interface. |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 143 | for tp in self._types: |
| 144 | m = self._view(tp(self._source)) |
| 145 | for tp_comp in self._types: |
| 146 | self.assertTrue(m == tp_comp(b"abcdef")) |
| 147 | self.assertFalse(m != tp_comp(b"abcdef")) |
| 148 | self.assertFalse(m == tp_comp(b"abcde")) |
| 149 | self.assertTrue(m != tp_comp(b"abcde")) |
| 150 | self.assertFalse(m == tp_comp(b"abcde1")) |
| 151 | self.assertTrue(m != tp_comp(b"abcde1")) |
| 152 | self.assertTrue(m == m) |
| 153 | self.assertTrue(m == m[:]) |
| 154 | self.assertTrue(m[0:6] == m[:]) |
| 155 | self.assertFalse(m[0:5] == m) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 156 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 157 | # Comparison with objects which don't support the buffer API |
| 158 | self.assertFalse(m == "abcdef") |
| 159 | self.assertTrue(m != "abcdef") |
| 160 | self.assertFalse("abcdef" == m) |
| 161 | self.assertTrue("abcdef" != m) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 162 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 163 | # Unordered comparisons |
| 164 | for c in (m, b"abcdef"): |
| 165 | self.assertRaises(TypeError, lambda: m < c) |
| 166 | self.assertRaises(TypeError, lambda: c <= m) |
| 167 | self.assertRaises(TypeError, lambda: m >= c) |
| 168 | self.assertRaises(TypeError, lambda: c > m) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 169 | |
| 170 | def check_attributes_with_type(self, tp): |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 171 | m = self._view(tp(self._source)) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 172 | self.assertEqual(m.format, self.format) |
| 173 | self.assertEqual(m.itemsize, self.itemsize) |
| 174 | self.assertEqual(m.ndim, 1) |
| 175 | self.assertEqual(m.shape, (6,)) |
| 176 | self.assertEqual(len(m), 6) |
| 177 | self.assertEqual(m.strides, (self.itemsize,)) |
| 178 | self.assertEqual(m.suboffsets, None) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 179 | return m |
| 180 | |
| 181 | def test_attributes_readonly(self): |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 182 | if not self.ro_type: |
| 183 | return |
| 184 | m = self.check_attributes_with_type(self.ro_type) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 185 | self.assertEqual(m.readonly, True) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 186 | |
| 187 | def test_attributes_writable(self): |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 188 | if not self.rw_type: |
| 189 | return |
| 190 | m = self.check_attributes_with_type(self.rw_type) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 191 | self.assertEqual(m.readonly, False) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 192 | |
Antoine Pitrou | c6b09eb | 2008-09-01 15:10:14 +0000 | [diff] [blame] | 193 | def test_getbuffer(self): |
| 194 | # Test PyObject_GetBuffer() on a memoryview object. |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 195 | for tp in self._types: |
| 196 | b = tp(self._source) |
| 197 | oldrefcount = sys.getrefcount(b) |
| 198 | m = self._view(b) |
| 199 | oldviewrefcount = sys.getrefcount(m) |
| 200 | s = str(m, "utf-8") |
| 201 | self._check_contents(tp, b, s.encode("utf-8")) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 202 | self.assertEqual(sys.getrefcount(m), oldviewrefcount) |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 203 | m = None |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 204 | self.assertEqual(sys.getrefcount(b), oldrefcount) |
Antoine Pitrou | c6b09eb | 2008-09-01 15:10:14 +0000 | [diff] [blame] | 205 | |
| 206 | def test_gc(self): |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 207 | for tp in self._types: |
| 208 | if not isinstance(tp, type): |
| 209 | # If tp is a factory rather than a plain type, skip |
| 210 | continue |
Antoine Pitrou | c6b09eb | 2008-09-01 15:10:14 +0000 | [diff] [blame] | 211 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 212 | class MySource(tp): |
| 213 | pass |
| 214 | class MyObject: |
| 215 | pass |
| 216 | |
| 217 | # Create a reference cycle through a memoryview object |
| 218 | b = MySource(tp(b'abc')) |
| 219 | m = self._view(b) |
| 220 | o = MyObject() |
| 221 | b.m = m |
| 222 | b.o = o |
| 223 | wr = weakref.ref(o) |
| 224 | b = m = o = None |
| 225 | # The cycle must be broken |
| 226 | gc.collect() |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 227 | self.assertTrue(wr() is None, wr()) |
Antoine Pitrou | c6b09eb | 2008-09-01 15:10:14 +0000 | [diff] [blame] | 228 | |
Antoine Pitrou | 6e6cc83 | 2010-09-09 12:59:39 +0000 | [diff] [blame] | 229 | def _check_released(self, m, tp): |
Ezio Melotti | ed3a7d2 | 2010-12-01 02:32:32 +0000 | [diff] [blame] | 230 | check = self.assertRaisesRegex(ValueError, "released") |
Antoine Pitrou | 6e6cc83 | 2010-09-09 12:59:39 +0000 | [diff] [blame] | 231 | with check: bytes(m) |
| 232 | with check: m.tobytes() |
| 233 | with check: m.tolist() |
| 234 | with check: m[0] |
| 235 | with check: m[0] = b'x' |
| 236 | with check: len(m) |
| 237 | with check: m.format |
| 238 | with check: m.itemsize |
| 239 | with check: m.ndim |
| 240 | with check: m.readonly |
| 241 | with check: m.shape |
| 242 | with check: m.strides |
| 243 | with check: |
| 244 | with m: |
| 245 | pass |
| 246 | # str() and repr() still function |
| 247 | self.assertIn("released memory", str(m)) |
| 248 | self.assertIn("released memory", repr(m)) |
| 249 | self.assertEqual(m, m) |
| 250 | self.assertNotEqual(m, memoryview(tp(self._source))) |
| 251 | self.assertNotEqual(m, tp(self._source)) |
| 252 | |
| 253 | def test_contextmanager(self): |
| 254 | for tp in self._types: |
| 255 | b = tp(self._source) |
| 256 | m = self._view(b) |
| 257 | with m as cm: |
| 258 | self.assertIs(cm, m) |
| 259 | self._check_released(m, tp) |
| 260 | m = self._view(b) |
| 261 | # Can release explicitly inside the context manager |
| 262 | with m: |
| 263 | m.release() |
| 264 | |
| 265 | def test_release(self): |
| 266 | for tp in self._types: |
| 267 | b = tp(self._source) |
| 268 | m = self._view(b) |
| 269 | m.release() |
| 270 | self._check_released(m, tp) |
| 271 | # Can be called a second time (it's a no-op) |
| 272 | m.release() |
| 273 | self._check_released(m, tp) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 274 | |
Antoine Pitrou | ad62b03 | 2011-01-18 18:57:52 +0000 | [diff] [blame] | 275 | def test_writable_readonly(self): |
| 276 | # Issue #10451: memoryview incorrectly exposes a readonly |
| 277 | # buffer as writable causing a segfault if using mmap |
| 278 | tp = self.ro_type |
| 279 | if tp is None: |
| 280 | return |
| 281 | b = tp(self._source) |
| 282 | m = self._view(b) |
| 283 | i = io.BytesIO(b'ZZZZ') |
| 284 | self.assertRaises(TypeError, i.readinto, m) |
| 285 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 286 | # Variations on source objects for the buffer: bytes-like objects, then arrays |
| 287 | # with itemsize > 1. |
| 288 | # NOTE: support for multi-dimensional objects is unimplemented. |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 289 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 290 | class BaseBytesMemoryTests(AbstractMemoryTests): |
| 291 | ro_type = bytes |
| 292 | rw_type = bytearray |
| 293 | getitem_type = bytes |
| 294 | itemsize = 1 |
| 295 | format = 'B' |
| 296 | |
| 297 | class BaseArrayMemoryTests(AbstractMemoryTests): |
| 298 | ro_type = None |
| 299 | rw_type = lambda self, b: array.array('i', list(b)) |
Antoine Pitrou | 1ce3eb5 | 2010-09-01 20:29:34 +0000 | [diff] [blame] | 300 | getitem_type = lambda self, b: array.array('i', list(b)).tobytes() |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 301 | itemsize = array.array('i').itemsize |
| 302 | format = 'i' |
| 303 | |
| 304 | def test_getbuffer(self): |
| 305 | # XXX Test should be adapted for non-byte buffers |
| 306 | pass |
| 307 | |
| 308 | def test_tolist(self): |
| 309 | # XXX NotImplementedError: tolist() only supports byte views |
| 310 | pass |
| 311 | |
| 312 | |
| 313 | # Variations on indirection levels: memoryview, slice of memoryview, |
| 314 | # slice of slice of memoryview. |
| 315 | # This is important to test allocation subtleties. |
| 316 | |
| 317 | class BaseMemoryviewTests: |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 318 | def _view(self, obj): |
| 319 | return memoryview(obj) |
| 320 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 321 | def _check_contents(self, tp, obj, contents): |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 322 | self.assertEqual(obj, tp(contents)) |
Christian Heimes | 7b6fc8e | 2007-11-08 02:28:11 +0000 | [diff] [blame] | 323 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 324 | class BaseMemorySliceTests: |
| 325 | source_bytes = b"XabcdefY" |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 326 | |
| 327 | def _view(self, obj): |
| 328 | m = memoryview(obj) |
| 329 | return m[1:7] |
| 330 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 331 | def _check_contents(self, tp, obj, contents): |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 332 | self.assertEqual(obj[1:7], tp(contents)) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 333 | |
| 334 | def test_refs(self): |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 335 | for tp in self._types: |
| 336 | m = memoryview(tp(self._source)) |
| 337 | oldrefcount = sys.getrefcount(m) |
| 338 | m[1:2] |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 339 | self.assertEqual(sys.getrefcount(m), oldrefcount) |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 340 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 341 | class BaseMemorySliceSliceTests: |
| 342 | source_bytes = b"XabcdefY" |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 343 | |
| 344 | def _view(self, obj): |
| 345 | m = memoryview(obj) |
| 346 | return m[:7][1:] |
| 347 | |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 348 | def _check_contents(self, tp, obj, contents): |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 349 | self.assertEqual(obj[1:7], tp(contents)) |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 350 | |
| 351 | |
| 352 | # Concrete test classes |
| 353 | |
| 354 | class BytesMemoryviewTest(unittest.TestCase, |
| 355 | BaseMemoryviewTests, BaseBytesMemoryTests): |
| 356 | |
| 357 | def test_constructor(self): |
| 358 | for tp in self._types: |
| 359 | ob = tp(self._source) |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 360 | self.assertTrue(memoryview(ob)) |
| 361 | self.assertTrue(memoryview(object=ob)) |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 362 | self.assertRaises(TypeError, memoryview) |
| 363 | self.assertRaises(TypeError, memoryview, ob, ob) |
| 364 | self.assertRaises(TypeError, memoryview, argument=ob) |
| 365 | self.assertRaises(TypeError, memoryview, ob, argument=True) |
| 366 | |
| 367 | class ArrayMemoryviewTest(unittest.TestCase, |
| 368 | BaseMemoryviewTests, BaseArrayMemoryTests): |
| 369 | |
| 370 | def test_array_assign(self): |
| 371 | # Issue #4569: segfault when mutating a memoryview with itemsize != 1 |
| 372 | a = array.array('i', range(10)) |
| 373 | m = memoryview(a) |
| 374 | new_a = array.array('i', range(9, -1, -1)) |
| 375 | m[:] = new_a |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 376 | self.assertEqual(a, new_a) |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 377 | |
| 378 | |
| 379 | class BytesMemorySliceTest(unittest.TestCase, |
| 380 | BaseMemorySliceTests, BaseBytesMemoryTests): |
| 381 | pass |
| 382 | |
| 383 | class ArrayMemorySliceTest(unittest.TestCase, |
| 384 | BaseMemorySliceTests, BaseArrayMemoryTests): |
| 385 | pass |
| 386 | |
| 387 | class BytesMemorySliceSliceTest(unittest.TestCase, |
| 388 | BaseMemorySliceSliceTests, BaseBytesMemoryTests): |
| 389 | pass |
| 390 | |
| 391 | class ArrayMemorySliceSliceTest(unittest.TestCase, |
| 392 | BaseMemorySliceSliceTests, BaseArrayMemoryTests): |
| 393 | pass |
Antoine Pitrou | 616d285 | 2008-08-19 22:09:34 +0000 | [diff] [blame] | 394 | |
| 395 | |
Christian Heimes | 7b6fc8e | 2007-11-08 02:28:11 +0000 | [diff] [blame] | 396 | def test_main(): |
Antoine Pitrou | c3b3924 | 2009-01-03 16:59:18 +0000 | [diff] [blame] | 397 | test.support.run_unittest(__name__) |
Christian Heimes | 7b6fc8e | 2007-11-08 02:28:11 +0000 | [diff] [blame] | 398 | |
| 399 | if __name__ == "__main__": |
| 400 | test_main() |