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412 lines
7.4 KiB
Python
412 lines
7.4 KiB
Python
"Test the functionality of Python classes implementing operators."
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from test.test_support import TestFailed
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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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"div",
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"rdiv",
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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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"getslice",
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"setitem",
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"setslice",
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"delitem",
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"delslice",
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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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# "coerce",
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# "hash",
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# "str",
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# "repr",
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# "int",
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# "long",
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# "float",
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# "oct",
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# "hex",
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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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class AllTests:
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def __coerce__(self, *args):
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print "__coerce__:", args
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return (self,) + args
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def __hash__(self, *args):
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print "__hash__:", args
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return hash(id(self))
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def __str__(self, *args):
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print "__str__:", args
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return "AllTests"
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def __repr__(self, *args):
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print "__repr__:", args
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return "AllTests"
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def __int__(self, *args):
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print "__int__:", args
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return 1
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def __float__(self, *args):
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print "__float__:", args
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return 1.0
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def __long__(self, *args):
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print "__long__:", args
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return 1L
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def __oct__(self, *args):
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print "__oct__:", args
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return '01'
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def __hex__(self, *args):
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print "__hex__:", args
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return '0x1'
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def __cmp__(self, *args):
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print "__cmp__:", args
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return 0
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def __del__(self, *args):
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print "__del__:", args
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# Synthesize AllTests methods from the names in testmeths.
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method_template = """\
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def __%(method)s__(self, *args):
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print "__%(method)s__:", args
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"""
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for method in testmeths:
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exec method_template % locals() in AllTests.__dict__
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del method, method_template
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# this also tests __init__ of course.
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testme = AllTests()
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# Binary operations
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testme + 1
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1 + testme
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testme - 1
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1 - testme
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testme * 1
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1 * testme
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if 1/2 == 0:
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testme / 1
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1 / testme
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else:
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# True division is in effect, so "/" doesn't map to __div__ etc; but
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# the canned expected-output file requires that __div__ etc get called.
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testme.__coerce__(1)
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testme.__div__(1)
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testme.__coerce__(1)
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testme.__rdiv__(1)
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testme % 1
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1 % testme
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divmod(testme,1)
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divmod(1, testme)
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testme ** 1
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1 ** testme
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testme >> 1
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1 >> testme
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testme << 1
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1 << testme
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testme & 1
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1 & testme
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testme | 1
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1 | testme
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testme ^ 1
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1 ^ testme
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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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print 'failed, should have raised TypeError'
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except TypeError:
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pass
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1 in testme
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testme[1]
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testme[1] = 1
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del testme[1]
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testme[:42]
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testme[:42] = "The Answer"
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del testme[:42]
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testme[2:1024:10]
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testme[2:1024:10] = "A lot"
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del testme[2:1024:10]
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testme[:42, ..., :24:, 24, 100]
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testme[:42, ..., :24:, 24, 100] = "Strange"
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del testme[:42, ..., :24:, 24, 100]
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# Now remove the slice hooks to see if converting normal slices to slice
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# object works.
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del AllTests.__getslice__
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del AllTests.__setslice__
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del AllTests.__delslice__
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import sys
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if sys.platform[:4] != 'java':
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testme[:42]
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testme[:42] = "The Answer"
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del testme[:42]
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else:
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# This works under Jython, but the actual slice values are
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# different.
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print "__getitem__: (slice(0, 42, None),)"
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print "__setitem__: (slice(0, 42, None), 'The Answer')"
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print "__delitem__: (slice(0, 42, None),)"
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# Unary operations
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-testme
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+testme
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abs(testme)
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int(testme)
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long(testme)
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float(testme)
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oct(testme)
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hex(testme)
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# And the rest...
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hash(testme)
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repr(testme)
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str(testme)
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testme == 1
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testme < 1
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testme > 1
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testme <> 1
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testme != 1
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1 == testme
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1 < testme
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1 > testme
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1 <> testme
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1 != testme
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# This test has to be last (duh.)
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del testme
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if sys.platform[:4] == 'java':
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import java
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java.lang.System.gc()
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# Interfering tests
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class ExtraTests:
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def __getattr__(self, *args):
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print "__getattr__:", args
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return "SomeVal"
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def __setattr__(self, *args):
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print "__setattr__:", args
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def __delattr__(self, *args):
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print "__delattr__:", args
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testme = ExtraTests()
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testme.spam
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testme.eggs = "spam, spam, spam and ham"
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del testme.cardinal
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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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__long__ = __int__
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__str__ = __int__
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__repr__ = __int__
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__oct__ = __int__
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__hex__ = __int__
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def check_exc(stmt, exception):
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"""Raise TestFailed if executing 'stmt' does not raise 'exception'
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"""
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try:
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exec stmt
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except exception:
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pass
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else:
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raise TestFailed, "%s should raise %s" % (stmt, exception)
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check_exc("int(BadTypeClass())", TypeError)
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check_exc("float(BadTypeClass())", TypeError)
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check_exc("long(BadTypeClass())", TypeError)
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check_exc("str(BadTypeClass())", TypeError)
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check_exc("repr(BadTypeClass())", TypeError)
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check_exc("oct(BadTypeClass())", TypeError)
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check_exc("hex(BadTypeClass())", TypeError)
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# mixing up ints and longs is okay
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class IntLongMixClass:
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def __int__(self):
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return 0L
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def __long__(self):
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return 0
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try:
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int(IntLongMixClass())
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except TypeError:
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raise TestFailed, "TypeError should not be raised"
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try:
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long(IntLongMixClass())
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except TypeError:
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raise TestFailed, "TypeError should not be raised"
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# Test correct errors from hash() on objects with comparisons but 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 C1:
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def __cmp__(self, other): return 0
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check_exc("hash(C1())", TypeError)
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class C2:
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def __eq__(self, other): return 1
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check_exc("hash(C2())", TypeError)
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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 RuntimeError:
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pass
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else:
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raise TestFailed, "how could this not have overflowed the stack?"
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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, x:
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if str(x) != "booh":
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print "attribute error for A().a got masked:", str(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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I() # In debug mode, printed XXX undetected error and raises AttributeError
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except AttributeError, x:
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pass
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else:
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print "attribute error for I.__init__ got masked"
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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 self.x == other.x
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def __hash__(self):
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return self.x
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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(2)
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assert a1.f == a1.f
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assert a1.f != a2.f
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assert a1.f != a1.g
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assert a1.f == A(1).f
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assert hash(a1.f) == hash(a1.f)
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assert hash(a1.f) == hash(A(1).f)
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assert A.f != a1.f
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assert A.f != A.g
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assert B.f == A.f
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assert hash(B.f) == hash(A.f)
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# the following triggers a SystemError in 2.4
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a = A(hash(A.f.im_func)^(-1))
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hash(a.f)
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