cpython-lru_cache-weakref: Lib/test/test

annotate Lib/test/test_dynamic.py @ 78069:a8aa77458e12 3.2

Add c_size_t and c_ssize_t to the ctypes summary table.

author	Antoine Pitrou <solipsis@pitrou.net>
date	Thu, 12 Jul 2012 20:31:50 +0200
parents	aa632943b8bd
children

rev	line source
59654 aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	1 # Test the most dynamic corner cases of Python's runtime semantics.
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	2
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	3 import builtins
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	4 import contextlib
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	5 import unittest
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	6
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	7 from test.support import run_unittest, swap_item, swap_attr
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	8
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	9
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	10 class RebindBuiltinsTests(unittest.TestCase):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	11
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	12 """Test all the ways that we can change/shadow globals/builtins."""
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	13
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	14 def configure_func(self, func, *args):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	15 """Perform TestCase-specific configuration on a function before testing.
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	16
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	17 By default, this does nothing. Example usage: spinning a function so
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	18 that a JIT will optimize it. Subclasses should override this as needed.
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	19
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	20 Args:
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	21 func: function to configure.
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	22 *args: any arguments that should be passed to func, if calling it.
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	23
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	24 Returns:
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	25 Nothing. Work will be performed on func in-place.
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	26 """
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	27 pass
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	28
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	29 def test_globals_shadow_builtins(self):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	30 # Modify globals() to shadow an entry in builtins.
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	31 def foo():
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	32 return len([1, 2, 3])
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	33 self.configure_func(foo)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	34
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	35 self.assertEqual(foo(), 3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	36 with swap_item(globals(), "len", lambda x: 7):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	37 self.assertEqual(foo(), 7)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	38
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	39 def test_modify_builtins(self):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	40 # Modify the builtins module directly.
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	41 def foo():
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	42 return len([1, 2, 3])
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	43 self.configure_func(foo)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	44
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	45 self.assertEqual(foo(), 3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	46 with swap_attr(builtins, "len", lambda x: 7):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	47 self.assertEqual(foo(), 7)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	48
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	49 def test_modify_builtins_while_generator_active(self):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	50 # Modify the builtins out from under a live generator.
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	51 def foo():
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	52 x = range(3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	53 yield len(x)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	54 yield len(x)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	55 self.configure_func(foo)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	56
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	57 g = foo()
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	58 self.assertEqual(next(g), 3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	59 with swap_attr(builtins, "len", lambda x: 7):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	60 self.assertEqual(next(g), 7)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	61
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	62 def test_modify_builtins_from_leaf_function(self):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	63 # Verify that modifications made by leaf functions percolate up the
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	64 # callstack.
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	65 with swap_attr(builtins, "len", len):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	66 def bar():
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	67 builtins.len = lambda x: 4
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	68
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	69 def foo(modifier):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	70 l = []
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	71 l.append(len(range(7)))
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	72 modifier()
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	73 l.append(len(range(7)))
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	74 return l
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	75 self.configure_func(foo, lambda: None)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	76
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	77 self.assertEqual(foo(bar), [7, 4])
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	78
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	79 def test_cannot_change_globals_or_builtins_with_eval(self):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	80 def foo():
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	81 return len([1, 2, 3])
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	82 self.configure_func(foo)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	83
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	84 # Note that this doesn't change the definition of len() seen by foo().
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	85 builtins_dict = {"len": lambda x: 7}
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	86 globals_dict = {"foo": foo, "__builtins__": builtins_dict,
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	87 "len": lambda x: 8}
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	88 self.assertEqual(eval("foo()", globals_dict), 3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	89
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	90 self.assertEqual(eval("foo()", {"foo": foo}), 3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	91
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	92 def test_cannot_change_globals_or_builtins_with_exec(self):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	93 def foo():
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	94 return len([1, 2, 3])
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	95 self.configure_func(foo)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	96
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	97 globals_dict = {"foo": foo}
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	98 exec("x = foo()", globals_dict)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	99 self.assertEqual(globals_dict["x"], 3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	100
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	101 # Note that this doesn't change the definition of len() seen by foo().
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	102 builtins_dict = {"len": lambda x: 7}
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	103 globals_dict = {"foo": foo, "__builtins__": builtins_dict,
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	104 "len": lambda x: 8}
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	105
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	106 exec("x = foo()", globals_dict)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	107 self.assertEqual(globals_dict["x"], 3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	108
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	109 def test_cannot_replace_builtins_dict_while_active(self):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	110 def foo():
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	111 x = range(3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	112 yield len(x)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	113 yield len(x)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	114 self.configure_func(foo)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	115
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	116 g = foo()
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	117 self.assertEqual(next(g), 3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	118 with swap_item(globals(), "__builtins__", {"len": lambda x: 7}):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	119 self.assertEqual(next(g), 3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	120
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	121 def test_cannot_replace_builtins_dict_between_calls(self):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	122 def foo():
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	123 return len([1, 2, 3])
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	124 self.configure_func(foo)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	125
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	126 self.assertEqual(foo(), 3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	127 with swap_item(globals(), "__builtins__", {"len": lambda x: 7}):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	128 self.assertEqual(foo(), 3)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	129
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	130 def test_eval_gives_lambda_custom_globals(self):
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	131 globals_dict = {"len": lambda x: 7}
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	132 foo = eval("lambda: len([])", globals_dict)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	133 self.configure_func(foo)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	134
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	135 self.assertEqual(foo(), 7)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	136
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	137
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	138 def test_main():
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	139 run_unittest(RebindBuiltinsTests)
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	140
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	141
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	142 if __name__ == "__main__":
aa632943b8bd Add some tests for ways users can change or shadow globals and builtins. Collin Winter <collinw@gmail.com> parents: diff changeset	143 test_main()

Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_dynamic.py @ 78069:a8aa77458e12 3.2