| Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 1 | import gc |
| 2 | |
| 3 | def test_list(): |
| 4 | l = [] |
| 5 | l.append(l) |
| Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 6 | gc.collect() |
| 7 | del l |
| 8 | assert gc.collect() == 1 |
| 9 | |
| 10 | def test_dict(): |
| 11 | d = {} |
| 12 | d[1] = d |
| Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 13 | gc.collect() |
| 14 | del d |
| 15 | assert gc.collect() == 1 |
| 16 | |
| 17 | def test_tuple(): |
| 18 | l = [] |
| 19 | t = (l,) |
| 20 | l.append(t) |
| Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 21 | gc.collect() |
| 22 | del t |
| 23 | del l |
| 24 | assert gc.collect() == 2 |
| 25 | |
| 26 | def test_class(): |
| 27 | class A: |
| 28 | pass |
| 29 | A.a = A |
| Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 30 | gc.collect() |
| 31 | del A |
| 32 | assert gc.collect() > 0 |
| 33 | |
| 34 | def test_instance(): |
| 35 | class A: |
| 36 | pass |
| 37 | a = A() |
| 38 | a.a = a |
| Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 39 | gc.collect() |
| 40 | del a |
| 41 | assert gc.collect() > 0 |
| 42 | |
| 43 | def test_method(): |
| 44 | class A: |
| 45 | def __init__(self): |
| 46 | self.init = self.__init__ |
| 47 | a = A() |
| 48 | gc.collect() |
| 49 | del a |
| 50 | assert gc.collect() > 0 |
| 51 | |
| 52 | def test_finalizer(): |
| 53 | class A: |
| 54 | def __del__(self): pass |
| 55 | class B: |
| 56 | pass |
| 57 | a = A() |
| 58 | a.a = a |
| 59 | id_a = id(a) |
| 60 | b = B() |
| 61 | b.b = b |
| Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 62 | gc.collect() |
| 63 | gc.garbage[:] = [] |
| 64 | del a |
| 65 | del b |
| 66 | assert gc.collect() > 0 |
| 67 | assert id(gc.garbage[0]) == id_a |
| 68 | |
| 69 | def test_function(): |
| 70 | d = {} |
| 71 | exec("def f(): pass\n") in d |
| Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 72 | gc.collect() |
| 73 | del d |
| 74 | assert gc.collect() == 2 |
| 75 | |
| 76 | |
| 77 | def test_all(): |
| Vladimir Marangozov | f9d20c3 | 2000-08-06 22:45:31 +0000 | [diff] [blame] | 78 | |
| 79 | enabled = gc.isenabled() |
| 80 | gc.disable() |
| 81 | assert not gc.isenabled() |
| 82 | |
| Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 83 | test_list() |
| 84 | test_dict() |
| 85 | test_tuple() |
| 86 | test_class() |
| 87 | test_instance() |
| 88 | test_method() |
| 89 | test_finalizer() |
| 90 | test_function() |
| Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 91 | |
| Vladimir Marangozov | f9d20c3 | 2000-08-06 22:45:31 +0000 | [diff] [blame] | 92 | # test gc.enable() even if GC is disabled by default |
| 93 | gc.enable() |
| 94 | assert gc.isenabled() |
| 95 | if not enabled: |
| 96 | gc.disable() |
| 97 | |
| 98 | |
| Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 99 | test_all() |