| 342 | self.assertEqual(gc.collect(), 1) |
| 343 | |
| 344 | def test_saveall(self): |
| 345 | # Verify that cyclic garbage like lists show up in gc.garbage if the |
| 346 | # SAVEALL option is enabled. |
| 347 | |
| 348 | # First make sure we don't save away other stuff that just happens to |
| 349 | # be waiting for collection. |
| 350 | gc.collect() |
| 351 | # if this fails, someone else created immortal trash |
| 352 | self.assertEqual(gc.garbage, []) |
| 353 | |
| 354 | L = [] |
| 355 | L.append(L) |
| 356 | id_L = id(L) |
| 357 | |
| 358 | debug = gc.get_debug() |
| 359 | gc.set_debug(debug | gc.DEBUG_SAVEALL) |
| 360 | del L |
| 361 | gc.collect() |
| 362 | gc.set_debug(debug) |
| 363 | |
| 364 | self.assertEqual(len(gc.garbage), 1) |
| 365 | obj = gc.garbage.pop() |
| 366 | self.assertEqual(id(obj), id_L) |
| 367 | |
| 368 | def test_del(self): |
| 369 | # __del__ methods can trigger collection, make this to happen |