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9302e331c7
* gh-94808: Add test for HasAttrString * Harmonize to Python C code style guidelines * Add check to verify no exception thrown
745 lines
20 KiB
Python
745 lines
20 KiB
Python
"Test the functionality of Python classes implementing operators."
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import unittest
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testmeths = [
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# Binary operations
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"add",
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"radd",
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"sub",
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"rsub",
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"mul",
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"rmul",
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"matmul",
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"rmatmul",
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"truediv",
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"rtruediv",
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"floordiv",
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"rfloordiv",
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"mod",
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"rmod",
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"divmod",
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"rdivmod",
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"pow",
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"rpow",
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"rshift",
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"rrshift",
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"lshift",
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"rlshift",
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"and",
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"rand",
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"or",
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"ror",
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"xor",
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"rxor",
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# List/dict operations
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"contains",
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"getitem",
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"setitem",
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"delitem",
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# Unary operations
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"neg",
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"pos",
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"abs",
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# generic operations
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"init",
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]
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# These need to return something other than None
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# "hash",
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# "str",
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# "repr",
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# "int",
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# "float",
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# These are separate because they can influence the test of other methods.
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# "getattr",
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# "setattr",
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# "delattr",
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callLst = []
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def trackCall(f):
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def track(*args, **kwargs):
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callLst.append((f.__name__, args))
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return f(*args, **kwargs)
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return track
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statictests = """
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@trackCall
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def __hash__(self, *args):
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return hash(id(self))
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@trackCall
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def __str__(self, *args):
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return "AllTests"
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@trackCall
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def __repr__(self, *args):
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return "AllTests"
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@trackCall
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def __int__(self, *args):
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return 1
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@trackCall
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def __index__(self, *args):
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return 1
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@trackCall
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def __float__(self, *args):
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return 1.0
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@trackCall
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def __eq__(self, *args):
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return True
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@trackCall
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def __ne__(self, *args):
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return False
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@trackCall
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def __lt__(self, *args):
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return False
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@trackCall
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def __le__(self, *args):
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return True
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@trackCall
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def __gt__(self, *args):
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return False
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@trackCall
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def __ge__(self, *args):
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return True
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"""
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# Synthesize all the other AllTests methods from the names in testmeths.
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method_template = """\
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@trackCall
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def __%s__(self, *args):
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pass
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"""
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d = {}
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exec(statictests, globals(), d)
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for method in testmeths:
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exec(method_template % method, globals(), d)
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AllTests = type("AllTests", (object,), d)
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del d, statictests, method, method_template
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class ClassTests(unittest.TestCase):
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def setUp(self):
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callLst[:] = []
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def assertCallStack(self, expected_calls):
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actualCallList = callLst[:] # need to copy because the comparison below will add
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# additional calls to callLst
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if expected_calls != actualCallList:
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self.fail("Expected call list:\n %s\ndoes not match actual call list\n %s" %
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(expected_calls, actualCallList))
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def testInit(self):
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foo = AllTests()
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self.assertCallStack([("__init__", (foo,))])
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def testBinaryOps(self):
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testme = AllTests()
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# Binary operations
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callLst[:] = []
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testme + 1
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self.assertCallStack([("__add__", (testme, 1))])
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callLst[:] = []
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1 + testme
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self.assertCallStack([("__radd__", (testme, 1))])
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callLst[:] = []
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testme - 1
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self.assertCallStack([("__sub__", (testme, 1))])
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callLst[:] = []
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1 - testme
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self.assertCallStack([("__rsub__", (testme, 1))])
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callLst[:] = []
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testme * 1
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self.assertCallStack([("__mul__", (testme, 1))])
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callLst[:] = []
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1 * testme
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self.assertCallStack([("__rmul__", (testme, 1))])
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callLst[:] = []
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testme @ 1
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self.assertCallStack([("__matmul__", (testme, 1))])
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callLst[:] = []
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1 @ testme
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self.assertCallStack([("__rmatmul__", (testme, 1))])
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callLst[:] = []
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testme / 1
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self.assertCallStack([("__truediv__", (testme, 1))])
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callLst[:] = []
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1 / testme
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self.assertCallStack([("__rtruediv__", (testme, 1))])
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callLst[:] = []
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testme // 1
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self.assertCallStack([("__floordiv__", (testme, 1))])
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callLst[:] = []
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1 // testme
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self.assertCallStack([("__rfloordiv__", (testme, 1))])
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callLst[:] = []
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testme % 1
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self.assertCallStack([("__mod__", (testme, 1))])
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callLst[:] = []
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1 % testme
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self.assertCallStack([("__rmod__", (testme, 1))])
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callLst[:] = []
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divmod(testme,1)
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self.assertCallStack([("__divmod__", (testme, 1))])
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callLst[:] = []
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divmod(1, testme)
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self.assertCallStack([("__rdivmod__", (testme, 1))])
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callLst[:] = []
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testme ** 1
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self.assertCallStack([("__pow__", (testme, 1))])
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callLst[:] = []
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1 ** testme
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self.assertCallStack([("__rpow__", (testme, 1))])
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callLst[:] = []
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testme >> 1
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self.assertCallStack([("__rshift__", (testme, 1))])
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callLst[:] = []
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1 >> testme
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self.assertCallStack([("__rrshift__", (testme, 1))])
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callLst[:] = []
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testme << 1
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self.assertCallStack([("__lshift__", (testme, 1))])
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callLst[:] = []
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1 << testme
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self.assertCallStack([("__rlshift__", (testme, 1))])
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callLst[:] = []
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testme & 1
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self.assertCallStack([("__and__", (testme, 1))])
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callLst[:] = []
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1 & testme
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self.assertCallStack([("__rand__", (testme, 1))])
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callLst[:] = []
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testme | 1
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self.assertCallStack([("__or__", (testme, 1))])
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callLst[:] = []
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1 | testme
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self.assertCallStack([("__ror__", (testme, 1))])
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callLst[:] = []
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testme ^ 1
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self.assertCallStack([("__xor__", (testme, 1))])
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callLst[:] = []
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1 ^ testme
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self.assertCallStack([("__rxor__", (testme, 1))])
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def testListAndDictOps(self):
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testme = AllTests()
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# List/dict operations
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class Empty: pass
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try:
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1 in Empty()
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self.fail('failed, should have raised TypeError')
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except TypeError:
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pass
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callLst[:] = []
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1 in testme
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self.assertCallStack([('__contains__', (testme, 1))])
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callLst[:] = []
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testme[1]
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self.assertCallStack([('__getitem__', (testme, 1))])
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callLst[:] = []
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testme[1] = 1
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self.assertCallStack([('__setitem__', (testme, 1, 1))])
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callLst[:] = []
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del testme[1]
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self.assertCallStack([('__delitem__', (testme, 1))])
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callLst[:] = []
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testme[:42]
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self.assertCallStack([('__getitem__', (testme, slice(None, 42)))])
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callLst[:] = []
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testme[:42] = "The Answer"
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self.assertCallStack([('__setitem__', (testme, slice(None, 42),
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"The Answer"))])
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callLst[:] = []
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del testme[:42]
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self.assertCallStack([('__delitem__', (testme, slice(None, 42)))])
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callLst[:] = []
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testme[2:1024:10]
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self.assertCallStack([('__getitem__', (testme, slice(2, 1024, 10)))])
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callLst[:] = []
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testme[2:1024:10] = "A lot"
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self.assertCallStack([('__setitem__', (testme, slice(2, 1024, 10),
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"A lot"))])
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callLst[:] = []
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del testme[2:1024:10]
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self.assertCallStack([('__delitem__', (testme, slice(2, 1024, 10)))])
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callLst[:] = []
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testme[:42, ..., :24:, 24, 100]
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self.assertCallStack([('__getitem__', (testme, (slice(None, 42, None),
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Ellipsis,
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slice(None, 24, None),
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24, 100)))])
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callLst[:] = []
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testme[:42, ..., :24:, 24, 100] = "Strange"
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self.assertCallStack([('__setitem__', (testme, (slice(None, 42, None),
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Ellipsis,
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slice(None, 24, None),
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24, 100), "Strange"))])
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callLst[:] = []
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del testme[:42, ..., :24:, 24, 100]
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self.assertCallStack([('__delitem__', (testme, (slice(None, 42, None),
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Ellipsis,
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slice(None, 24, None),
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24, 100)))])
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def testUnaryOps(self):
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testme = AllTests()
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callLst[:] = []
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-testme
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self.assertCallStack([('__neg__', (testme,))])
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callLst[:] = []
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+testme
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self.assertCallStack([('__pos__', (testme,))])
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callLst[:] = []
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abs(testme)
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self.assertCallStack([('__abs__', (testme,))])
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callLst[:] = []
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int(testme)
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self.assertCallStack([('__int__', (testme,))])
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callLst[:] = []
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float(testme)
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self.assertCallStack([('__float__', (testme,))])
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callLst[:] = []
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oct(testme)
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self.assertCallStack([('__index__', (testme,))])
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callLst[:] = []
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hex(testme)
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self.assertCallStack([('__index__', (testme,))])
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def testMisc(self):
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testme = AllTests()
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callLst[:] = []
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hash(testme)
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self.assertCallStack([('__hash__', (testme,))])
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callLst[:] = []
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repr(testme)
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self.assertCallStack([('__repr__', (testme,))])
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callLst[:] = []
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str(testme)
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self.assertCallStack([('__str__', (testme,))])
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callLst[:] = []
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testme == 1
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self.assertCallStack([('__eq__', (testme, 1))])
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callLst[:] = []
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testme < 1
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self.assertCallStack([('__lt__', (testme, 1))])
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callLst[:] = []
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testme > 1
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self.assertCallStack([('__gt__', (testme, 1))])
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callLst[:] = []
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testme != 1
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self.assertCallStack([('__ne__', (testme, 1))])
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callLst[:] = []
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1 == testme
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self.assertCallStack([('__eq__', (1, testme))])
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callLst[:] = []
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1 < testme
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self.assertCallStack([('__gt__', (1, testme))])
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callLst[:] = []
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1 > testme
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self.assertCallStack([('__lt__', (1, testme))])
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callLst[:] = []
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1 != testme
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self.assertCallStack([('__ne__', (1, testme))])
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def testGetSetAndDel(self):
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# Interfering tests
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class ExtraTests(AllTests):
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@trackCall
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def __getattr__(self, *args):
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return "SomeVal"
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@trackCall
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def __setattr__(self, *args):
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pass
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@trackCall
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def __delattr__(self, *args):
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pass
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testme = ExtraTests()
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callLst[:] = []
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testme.spam
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self.assertCallStack([('__getattr__', (testme, "spam"))])
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callLst[:] = []
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testme.eggs = "spam, spam, spam and ham"
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self.assertCallStack([('__setattr__', (testme, "eggs",
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"spam, spam, spam and ham"))])
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callLst[:] = []
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del testme.cardinal
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self.assertCallStack([('__delattr__', (testme, "cardinal"))])
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def testHasAttrString(self):
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import sys
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from test.support import import_helper
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_testcapi = import_helper.import_module('_testcapi')
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class A:
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def __init__(self):
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self.attr = 1
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a = A()
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self.assertEqual(_testcapi.hasattr_string(a, "attr"), True)
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self.assertEqual(_testcapi.hasattr_string(a, "noattr"), False)
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self.assertEqual(sys.exc_info(), (None, None, None))
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def testDel(self):
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x = []
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class DelTest:
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def __del__(self):
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x.append("crab people, crab people")
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testme = DelTest()
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del testme
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import gc
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gc.collect()
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self.assertEqual(["crab people, crab people"], x)
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def testBadTypeReturned(self):
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# return values of some method are type-checked
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class BadTypeClass:
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def __int__(self):
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return None
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__float__ = __int__
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__complex__ = __int__
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__str__ = __int__
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__repr__ = __int__
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__bytes__ = __int__
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__bool__ = __int__
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__index__ = __int__
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def index(x):
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return [][x]
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for f in [float, complex, str, repr, bytes, bin, oct, hex, bool, index]:
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self.assertRaises(TypeError, f, BadTypeClass())
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def testHashStuff(self):
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# Test correct errors from hash() on objects with comparisons but
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# no __hash__
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class C0:
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pass
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hash(C0()) # This should work; the next two should raise TypeError
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class C2:
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def __eq__(self, other): return 1
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self.assertRaises(TypeError, hash, C2())
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def testSFBug532646(self):
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# Test for SF bug 532646
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class A:
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pass
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A.__call__ = A()
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a = A()
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try:
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a() # This should not segfault
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except RecursionError:
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pass
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else:
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self.fail("Failed to raise RecursionError")
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def testForExceptionsRaisedInInstanceGetattr2(self):
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# Tests for exceptions raised in instance_getattr2().
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def booh(self):
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raise AttributeError("booh")
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class A:
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a = property(booh)
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try:
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A().a # Raised AttributeError: A instance has no attribute 'a'
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except AttributeError as x:
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if str(x) != "booh":
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self.fail("attribute error for A().a got masked: %s" % x)
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class E:
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__eq__ = property(booh)
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E() == E() # In debug mode, caused a C-level assert() to fail
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class I:
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__init__ = property(booh)
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try:
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# In debug mode, printed XXX undetected error and
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# raises AttributeError
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I()
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except AttributeError:
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pass
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else:
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self.fail("attribute error for I.__init__ got masked")
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def assertNotOrderable(self, a, b):
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with self.assertRaises(TypeError):
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a < b
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with self.assertRaises(TypeError):
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a > b
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with self.assertRaises(TypeError):
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a <= b
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with self.assertRaises(TypeError):
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a >= b
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def testHashComparisonOfMethods(self):
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# Test comparison and hash of methods
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class A:
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def __init__(self, x):
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self.x = x
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def f(self):
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pass
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def g(self):
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pass
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def __eq__(self, other):
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return True
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def __hash__(self):
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raise TypeError
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class B(A):
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pass
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a1 = A(1)
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a2 = A(1)
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self.assertTrue(a1.f == a1.f)
|
|
self.assertFalse(a1.f != a1.f)
|
|
self.assertFalse(a1.f == a2.f)
|
|
self.assertTrue(a1.f != a2.f)
|
|
self.assertFalse(a1.f == a1.g)
|
|
self.assertTrue(a1.f != a1.g)
|
|
self.assertNotOrderable(a1.f, a1.f)
|
|
self.assertEqual(hash(a1.f), hash(a1.f))
|
|
|
|
self.assertFalse(A.f == a1.f)
|
|
self.assertTrue(A.f != a1.f)
|
|
self.assertFalse(A.f == A.g)
|
|
self.assertTrue(A.f != A.g)
|
|
self.assertTrue(B.f == A.f)
|
|
self.assertFalse(B.f != A.f)
|
|
self.assertNotOrderable(A.f, A.f)
|
|
self.assertEqual(hash(B.f), hash(A.f))
|
|
|
|
# the following triggers a SystemError in 2.4
|
|
a = A(hash(A.f)^(-1))
|
|
hash(a.f)
|
|
|
|
def testSetattrWrapperNameIntern(self):
|
|
# Issue #25794: __setattr__ should intern the attribute name
|
|
class A:
|
|
pass
|
|
|
|
def add(self, other):
|
|
return 'summa'
|
|
|
|
name = str(b'__add__', 'ascii') # shouldn't be optimized
|
|
self.assertIsNot(name, '__add__') # not interned
|
|
type.__setattr__(A, name, add)
|
|
self.assertEqual(A() + 1, 'summa')
|
|
|
|
name2 = str(b'__add__', 'ascii')
|
|
self.assertIsNot(name2, '__add__')
|
|
self.assertIsNot(name2, name)
|
|
type.__delattr__(A, name2)
|
|
with self.assertRaises(TypeError):
|
|
A() + 1
|
|
|
|
def testSetattrNonStringName(self):
|
|
class A:
|
|
pass
|
|
|
|
with self.assertRaises(TypeError):
|
|
type.__setattr__(A, b'x', None)
|
|
|
|
def testTypeAttributeAccessErrorMessages(self):
|
|
class A:
|
|
pass
|
|
|
|
error_msg = "type object 'A' has no attribute 'x'"
|
|
with self.assertRaisesRegex(AttributeError, error_msg):
|
|
A.x
|
|
with self.assertRaisesRegex(AttributeError, error_msg):
|
|
del A.x
|
|
|
|
def testObjectAttributeAccessErrorMessages(self):
|
|
class A:
|
|
pass
|
|
class B:
|
|
y = 0
|
|
__slots__ = ('z',)
|
|
|
|
error_msg = "'A' object has no attribute 'x'"
|
|
with self.assertRaisesRegex(AttributeError, error_msg):
|
|
A().x
|
|
with self.assertRaisesRegex(AttributeError, error_msg):
|
|
del A().x
|
|
|
|
error_msg = "'B' object has no attribute 'x'"
|
|
with self.assertRaisesRegex(AttributeError, error_msg):
|
|
B().x
|
|
with self.assertRaisesRegex(AttributeError, error_msg):
|
|
del B().x
|
|
with self.assertRaisesRegex(AttributeError, error_msg):
|
|
B().x = 0
|
|
|
|
error_msg = "'B' object attribute 'y' is read-only"
|
|
with self.assertRaisesRegex(AttributeError, error_msg):
|
|
del B().y
|
|
with self.assertRaisesRegex(AttributeError, error_msg):
|
|
B().y = 0
|
|
|
|
error_msg = 'z'
|
|
with self.assertRaisesRegex(AttributeError, error_msg):
|
|
B().z
|
|
with self.assertRaisesRegex(AttributeError, error_msg):
|
|
del B().z
|
|
|
|
def testConstructorErrorMessages(self):
|
|
# bpo-31506: Improves the error message logic for object_new & object_init
|
|
|
|
# Class without any method overrides
|
|
class C:
|
|
pass
|
|
|
|
error_msg = r'C.__init__\(\) takes exactly one argument \(the instance to initialize\)'
|
|
|
|
with self.assertRaisesRegex(TypeError, r'C\(\) takes no arguments'):
|
|
C(42)
|
|
|
|
with self.assertRaisesRegex(TypeError, r'C\(\) takes no arguments'):
|
|
C.__new__(C, 42)
|
|
|
|
with self.assertRaisesRegex(TypeError, error_msg):
|
|
C().__init__(42)
|
|
|
|
with self.assertRaisesRegex(TypeError, r'C\(\) takes no arguments'):
|
|
object.__new__(C, 42)
|
|
|
|
with self.assertRaisesRegex(TypeError, error_msg):
|
|
object.__init__(C(), 42)
|
|
|
|
# Class with both `__init__` & `__new__` method overridden
|
|
class D:
|
|
def __new__(cls, *args, **kwargs):
|
|
super().__new__(cls, *args, **kwargs)
|
|
def __init__(self, *args, **kwargs):
|
|
super().__init__(*args, **kwargs)
|
|
|
|
error_msg = r'object.__new__\(\) takes exactly one argument \(the type to instantiate\)'
|
|
|
|
with self.assertRaisesRegex(TypeError, error_msg):
|
|
D(42)
|
|
|
|
with self.assertRaisesRegex(TypeError, error_msg):
|
|
D.__new__(D, 42)
|
|
|
|
with self.assertRaisesRegex(TypeError, error_msg):
|
|
object.__new__(D, 42)
|
|
|
|
# Class that only overrides __init__
|
|
class E:
|
|
def __init__(self, *args, **kwargs):
|
|
super().__init__(*args, **kwargs)
|
|
|
|
error_msg = r'object.__init__\(\) takes exactly one argument \(the instance to initialize\)'
|
|
|
|
with self.assertRaisesRegex(TypeError, error_msg):
|
|
E().__init__(42)
|
|
|
|
with self.assertRaisesRegex(TypeError, error_msg):
|
|
object.__init__(E(), 42)
|
|
|
|
def testClassWithExtCall(self):
|
|
class Meta(int):
|
|
def __init__(*args, **kwargs):
|
|
pass
|
|
|
|
def __new__(cls, name, bases, attrs, **kwargs):
|
|
return bases, kwargs
|
|
|
|
d = {'metaclass': Meta}
|
|
|
|
class A(**d): pass
|
|
self.assertEqual(A, ((), {}))
|
|
class A(0, 1, 2, 3, 4, 5, 6, 7, **d): pass
|
|
self.assertEqual(A, (tuple(range(8)), {}))
|
|
class A(0, *range(1, 8), **d, foo='bar'): pass
|
|
self.assertEqual(A, (tuple(range(8)), {'foo': 'bar'}))
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|