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//usr/lib/python2.4/test/test_class.py
"Test the functionality of Python classes implementing operators." from test.test_support import TestFailed testmeths = [ # Binary operations "add", "radd", "sub", "rsub", "mul", "rmul", "div", "rdiv", "mod", "rmod", "divmod", "rdivmod", "pow", "rpow", "rshift", "rrshift", "lshift", "rlshift", "and", "rand", "or", "ror", "xor", "rxor", # List/dict operations "contains", "getitem", "getslice", "setitem", "setslice", "delitem", "delslice", # Unary operations "neg", "pos", "abs", # generic operations "init", ] # These need to return something other than None # "coerce", # "hash", # "str", # "repr", # "int", # "long", # "float", # "oct", # "hex", # These are separate because they can influence the test of other methods. # "getattr", # "setattr", # "delattr", class AllTests: def __coerce__(self, *args): print "__coerce__:", args return (self,) + args def __hash__(self, *args): print "__hash__:", args return hash(id(self)) def __str__(self, *args): print "__str__:", args return "AllTests" def __repr__(self, *args): print "__repr__:", args return "AllTests" def __int__(self, *args): print "__int__:", args return 1 def __float__(self, *args): print "__float__:", args return 1.0 def __long__(self, *args): print "__long__:", args return 1L def __oct__(self, *args): print "__oct__:", args return '01' def __hex__(self, *args): print "__hex__:", args return '0x1' def __cmp__(self, *args): print "__cmp__:", args return 0 def __del__(self, *args): print "__del__:", args # Synthesize AllTests methods from the names in testmeths. method_template = """\ def __%(method)s__(self, *args): print "__%(method)s__:", args """ for method in testmeths: exec method_template % locals() in AllTests.__dict__ del method, method_template # this also tests __init__ of course. testme = AllTests() # Binary operations testme + 1 1 + testme testme - 1 1 - testme testme * 1 1 * testme if 1/2 == 0: testme / 1 1 / testme else: # True division is in effect, so "/" doesn't map to __div__ etc; but # the canned expected-output file requires that __div__ etc get called. testme.__coerce__(1) testme.__div__(1) testme.__coerce__(1) testme.__rdiv__(1) testme % 1 1 % testme divmod(testme,1) divmod(1, testme) testme ** 1 1 ** testme testme >> 1 1 >> testme testme << 1 1 << testme testme & 1 1 & testme testme | 1 1 | testme testme ^ 1 1 ^ testme # List/dict operations 1 in testme testme[1] testme[1] = 1 del testme[1] testme[:42] testme[:42] = "The Answer" del testme[:42] testme[2:1024:10] testme[2:1024:10] = "A lot" del testme[2:1024:10] testme[:42, ..., :24:, 24, 100] testme[:42, ..., :24:, 24, 100] = "Strange" del testme[:42, ..., :24:, 24, 100] # Now remove the slice hooks to see if converting normal slices to slice # object works. del AllTests.__getslice__ del AllTests.__setslice__ del AllTests.__delslice__ import sys if sys.platform[:4] != 'java': testme[:42] testme[:42] = "The Answer" del testme[:42] else: # This works under Jython, but the actual slice values are # different. print "__getitem__: (slice(0, 42, None),)" print "__setitem__: (slice(0, 42, None), 'The Answer')" print "__delitem__: (slice(0, 42, None),)" # Unary operations -testme +testme abs(testme) int(testme) long(testme) float(testme) oct(testme) hex(testme) # And the rest... hash(testme) repr(testme) str(testme) testme == 1 testme < 1 testme > 1 testme <> 1 testme != 1 1 == testme 1 < testme 1 > testme 1 <> testme 1 != testme # This test has to be last (duh.) del testme if sys.platform[:4] == 'java': import java java.lang.System.gc() # Interfering tests class ExtraTests: def __getattr__(self, *args): print "__getattr__:", args return "SomeVal" def __setattr__(self, *args): print "__setattr__:", args def __delattr__(self, *args): print "__delattr__:", args testme = ExtraTests() testme.spam testme.eggs = "spam, spam, spam and ham" del testme.cardinal # return values of some method are type-checked class BadTypeClass: def __int__(self): return None __float__ = __int__ __long__ = __int__ __str__ = __int__ __repr__ = __int__ __oct__ = __int__ __hex__ = __int__ def check_exc(stmt, exception): """Raise TestFailed if executing 'stmt' does not raise 'exception' """ try: exec stmt except exception: pass else: raise TestFailed, "%s should raise %s" % (stmt, exception) check_exc("int(BadTypeClass())", TypeError) check_exc("float(BadTypeClass())", TypeError) check_exc("long(BadTypeClass())", TypeError) check_exc("str(BadTypeClass())", TypeError) check_exc("repr(BadTypeClass())", TypeError) check_exc("oct(BadTypeClass())", TypeError) check_exc("hex(BadTypeClass())", TypeError) # mixing up ints and longs is okay class IntLongMixClass: def __int__(self): return 0L def __long__(self): return 0 try: int(IntLongMixClass()) except TypeError: raise TestFailed, "TypeError should not be raised" try: long(IntLongMixClass()) except TypeError: raise TestFailed, "TypeError should not be raised" # Test correct errors from hash() on objects with comparisons but no __hash__ class C0: pass hash(C0()) # This should work; the next two should raise TypeError class C1: def __cmp__(self, other): return 0 check_exc("hash(C1())", TypeError) class C2: def __eq__(self, other): return 1 check_exc("hash(C2())", TypeError) # Test for SF bug 532646 class A: pass A.__call__ = A() a = A() try: a() # This should not segfault except RuntimeError: pass else: raise TestFailed, "how could this not have overflowed the stack?" # Tests for exceptions raised in instance_getattr2(). def booh(self): raise AttributeError, "booh" class A: a = property(booh) try: A().a # Raised AttributeError: A instance has no attribute 'a' except AttributeError, x: if str(x) != "booh": print "attribute error for A().a got masked:", str(x) class E: __eq__ = property(booh) E() == E() # In debug mode, caused a C-level assert() to fail class I: __init__ = property(booh) try: I() # In debug mode, printed XXX undetected error and raises AttributeError except AttributeError, x: pass else: print "attribute error for I.__init__ got masked"