(self)
| 230 | self.assertIs(traceback2, traceback1) |
| 231 | |
| 232 | def test_get_traced_memory(self): |
| 233 | # Python allocates some internals objects, so the test must tolerate |
| 234 | # a small difference between the expected size and the real usage |
| 235 | max_error = 2048 |
| 236 | |
| 237 | # allocate one object |
| 238 | obj_size = 1024 * 1024 |
| 239 | tracemalloc.clear_traces() |
| 240 | obj, obj_traceback = allocate_bytes(obj_size) |
| 241 | size, peak_size = tracemalloc.get_traced_memory() |
| 242 | self.assertGreaterEqual(size, obj_size) |
| 243 | self.assertGreaterEqual(peak_size, size) |
| 244 | |
| 245 | self.assertLessEqual(size - obj_size, max_error) |
| 246 | self.assertLessEqual(peak_size - size, max_error) |
| 247 | |
| 248 | # destroy the object |
| 249 | obj = None |
| 250 | size2, peak_size2 = tracemalloc.get_traced_memory() |
| 251 | self.assertLess(size2, size) |
| 252 | self.assertGreaterEqual(size - size2, obj_size - max_error) |
| 253 | self.assertGreaterEqual(peak_size2, peak_size) |
| 254 | |
| 255 | # clear_traces() must reset traced memory counters |
| 256 | tracemalloc.clear_traces() |
| 257 | self.assertEqual(tracemalloc.get_traced_memory(), (0, 0)) |
| 258 | |
| 259 | # allocate another object |
| 260 | obj, obj_traceback = allocate_bytes(obj_size) |
| 261 | size, peak_size = tracemalloc.get_traced_memory() |
| 262 | self.assertGreaterEqual(size, obj_size) |
| 263 | |
| 264 | # stop() also resets traced memory counters |
| 265 | tracemalloc.stop() |
| 266 | self.assertEqual(tracemalloc.get_traced_memory(), (0, 0)) |
| 267 | |
| 268 | def test_clear_traces(self): |
| 269 | obj, obj_traceback = allocate_bytes(123) |
nothing calls this directly
no test coverage detected