|
| 1 | +""" |
| 2 | +Tests run by test_atexit in a subprocess since it clears atexit callbacks. |
| 3 | +""" |
| 4 | +import atexit |
| 5 | +import sys |
| 6 | +import unittest |
| 7 | +from test import support |
| 8 | + |
| 9 | + |
| 10 | +class GeneralTest(unittest.TestCase): |
| 11 | + def setUp(self): |
| 12 | + atexit._clear() |
| 13 | + |
| 14 | + def tearDown(self): |
| 15 | + atexit._clear() |
| 16 | + |
| 17 | + def assert_raises_unraisable(self, exc_type, func, *args): |
| 18 | + with support.catch_unraisable_exception() as cm: |
| 19 | + atexit.register(func, *args) |
| 20 | + atexit._run_exitfuncs() |
| 21 | + |
| 22 | + self.assertEqual(cm.unraisable.object, func) |
| 23 | + self.assertEqual(cm.unraisable.exc_type, exc_type) |
| 24 | + self.assertEqual(type(cm.unraisable.exc_value), exc_type) |
| 25 | + |
| 26 | + def test_order(self): |
| 27 | + # Check that callbacks are called in reverse order with the expected |
| 28 | + # positional and keyword arguments. |
| 29 | + calls = [] |
| 30 | + |
| 31 | + def func1(*args, **kwargs): |
| 32 | + calls.append(('func1', args, kwargs)) |
| 33 | + |
| 34 | + def func2(*args, **kwargs): |
| 35 | + calls.append(('func2', args, kwargs)) |
| 36 | + |
| 37 | + # be sure args are handled properly |
| 38 | + atexit.register(func1, 1, 2) |
| 39 | + atexit.register(func2) |
| 40 | + atexit.register(func2, 3, key="value") |
| 41 | + atexit._run_exitfuncs() |
| 42 | + |
| 43 | + self.assertEqual(calls, |
| 44 | + [('func2', (3,), {'key': 'value'}), |
| 45 | + ('func2', (), {}), |
| 46 | + ('func1', (1, 2), {})]) |
| 47 | + |
| 48 | + def test_badargs(self): |
| 49 | + def func(): |
| 50 | + pass |
| 51 | + |
| 52 | + # func() has no parameter, but it's called with 2 parameters |
| 53 | + self.assert_raises_unraisable(TypeError, func, 1 ,2) |
| 54 | + |
| 55 | + def test_raise(self): |
| 56 | + def raise_type_error(): |
| 57 | + raise TypeError |
| 58 | + |
| 59 | + self.assert_raises_unraisable(TypeError, raise_type_error) |
| 60 | + |
| 61 | + def test_raise_unnormalized(self): |
| 62 | + # bpo-10756: Make sure that an unnormalized exception is handled |
| 63 | + # properly. |
| 64 | + def div_zero(): |
| 65 | + 1 / 0 |
| 66 | + |
| 67 | + self.assert_raises_unraisable(ZeroDivisionError, div_zero) |
| 68 | + |
| 69 | + def test_exit(self): |
| 70 | + self.assert_raises_unraisable(SystemExit, sys.exit) |
| 71 | + |
| 72 | + def test_stress(self): |
| 73 | + a = [0] |
| 74 | + def inc(): |
| 75 | + a[0] += 1 |
| 76 | + |
| 77 | + for i in range(128): |
| 78 | + atexit.register(inc) |
| 79 | + atexit._run_exitfuncs() |
| 80 | + |
| 81 | + self.assertEqual(a[0], 128) |
| 82 | + |
| 83 | + def test_clear(self): |
| 84 | + a = [0] |
| 85 | + def inc(): |
| 86 | + a[0] += 1 |
| 87 | + |
| 88 | + atexit.register(inc) |
| 89 | + atexit._clear() |
| 90 | + atexit._run_exitfuncs() |
| 91 | + |
| 92 | + self.assertEqual(a[0], 0) |
| 93 | + |
| 94 | + def test_unregister(self): |
| 95 | + a = [0] |
| 96 | + def inc(): |
| 97 | + a[0] += 1 |
| 98 | + def dec(): |
| 99 | + a[0] -= 1 |
| 100 | + |
| 101 | + for i in range(4): |
| 102 | + atexit.register(inc) |
| 103 | + atexit.register(dec) |
| 104 | + atexit.unregister(inc) |
| 105 | + atexit._run_exitfuncs() |
| 106 | + |
| 107 | + self.assertEqual(a[0], -1) |
| 108 | + |
| 109 | + def test_bound_methods(self): |
| 110 | + l = [] |
| 111 | + atexit.register(l.append, 5) |
| 112 | + atexit._run_exitfuncs() |
| 113 | + self.assertEqual(l, [5]) |
| 114 | + |
| 115 | + atexit.unregister(l.append) |
| 116 | + atexit._run_exitfuncs() |
| 117 | + self.assertEqual(l, [5]) |
| 118 | + |
| 119 | + def test_atexit_with_unregistered_function(self): |
| 120 | + # See bpo-46025 for more info |
| 121 | + def func(): |
| 122 | + atexit.unregister(func) |
| 123 | + 1/0 |
| 124 | + atexit.register(func) |
| 125 | + try: |
| 126 | + with support.catch_unraisable_exception() as cm: |
| 127 | + atexit._run_exitfuncs() |
| 128 | + self.assertEqual(cm.unraisable.object, func) |
| 129 | + self.assertEqual(cm.unraisable.exc_type, ZeroDivisionError) |
| 130 | + self.assertEqual(type(cm.unraisable.exc_value), ZeroDivisionError) |
| 131 | + finally: |
| 132 | + atexit.unregister(func) |
| 133 | + |
| 134 | + |
| 135 | +if __name__ == "__main__": |
| 136 | + unittest.main() |
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