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e276339cea
Change pickling format for bools to use a backwards compatible encoding. This means you can pickle True or False on Python 2.3 and Python 2.2 or before will read it back as 1 or 0. The code used for pickling bools before would create pickles that could not be read in previous Python versions.
234 lines
5.7 KiB
Python
234 lines
5.7 KiB
Python
# Test properties of bool promised by PEP 285
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from test_support import verbose, TestFailed, TESTFN, vereq
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def veris(a, b):
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if a is not b:
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raise TestFailed, "%r is %r" % (a, b)
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def verisnot(a, b):
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if a is b:
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raise TestFailed, "%r is %r" % (a, b)
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try:
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class C(bool):
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pass
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except TypeError:
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pass
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else:
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raise TestFailed, "bool should not be subclassable"
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try:
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int.__new__(bool, 0)
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except TypeError:
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pass
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else:
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raise TestFailed, "should not be able to create new bool instances"
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vereq(int(False), 0)
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verisnot(int(False), False)
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vereq(int(True), 1)
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verisnot(int(True), True)
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vereq(+False, 0)
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verisnot(+False, False)
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vereq(-False, 0)
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verisnot(-False, False)
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vereq(abs(False), 0)
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verisnot(abs(False), False)
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vereq(+True, 1)
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verisnot(+True, True)
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vereq(-True, -1)
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vereq(abs(True), 1)
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verisnot(abs(True), True)
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vereq(~False, -1)
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vereq(~True, -2)
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vereq(False+2, 2)
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vereq(True+2, 3)
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vereq(2+False, 2)
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vereq(2+True, 3)
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vereq(False+False, 0)
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verisnot(False+False, False)
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vereq(False+True, 1)
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verisnot(False+True, True)
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vereq(True+False, 1)
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verisnot(True+False, True)
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vereq(True+True, 2)
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vereq(True-True, 0)
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verisnot(True-True, False)
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vereq(False-False, 0)
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verisnot(False-False, False)
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vereq(True-False, 1)
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verisnot(True-False, True)
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vereq(False-True, -1)
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vereq(True*1, 1)
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vereq(False*1, 0)
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verisnot(False*1, False)
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vereq(True/1, 1)
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verisnot(True/1, True)
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vereq(False/1, 0)
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verisnot(False/1, False)
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for b in False, True:
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for i in 0, 1, 2:
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vereq(b**i, int(b)**i)
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verisnot(b**i, bool(int(b)**i))
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for a in False, True:
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for b in False, True:
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veris(a&b, bool(int(a)&int(b)))
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veris(a|b, bool(int(a)|int(b)))
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veris(a^b, bool(int(a)^int(b)))
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vereq(a&int(b), int(a)&int(b))
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verisnot(a&int(b), bool(int(a)&int(b)))
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vereq(a|int(b), int(a)|int(b))
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verisnot(a|int(b), bool(int(a)|int(b)))
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vereq(a^int(b), int(a)^int(b))
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verisnot(a^int(b), bool(int(a)^int(b)))
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vereq(int(a)&b, int(a)&int(b))
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verisnot(int(a)&b, bool(int(a)&int(b)))
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vereq(int(a)|b, int(a)|int(b))
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verisnot(int(a)|b, bool(int(a)|int(b)))
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vereq(int(a)^b, int(a)^int(b))
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verisnot(int(a)^b, bool(int(a)^int(b)))
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veris(1==1, True)
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veris(1==0, False)
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# XXX <, <=, >, >=, !=
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x = [1]
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veris(x is x, True)
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veris(x is not x, False)
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veris(1 in x, True)
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veris(0 in x, False)
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veris(1 not in x, False)
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veris(0 not in x, True)
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veris(not True, False)
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veris(not False, True)
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veris(bool(10), True)
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veris(bool(1), True)
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veris(bool(-1), True)
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veris(bool(0), False)
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veris(bool("hello"), True)
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veris(bool(""), False)
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veris(hasattr([], "append"), True)
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veris(hasattr([], "wobble"), False)
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veris(callable(len), True)
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veris(callable(1), False)
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veris(isinstance(True, bool), True)
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veris(isinstance(False, bool), True)
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veris(isinstance(True, int), True)
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veris(isinstance(False, int), True)
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veris(isinstance(1, bool), False)
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veris(isinstance(0, bool), False)
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veris(issubclass(bool, int), True)
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veris(issubclass(int, bool), False)
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veris({}.has_key(1), False)
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veris({1:1}.has_key(1), True)
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veris("xyz".endswith("z"), True)
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veris("xyz".endswith("x"), False)
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veris("xyz0123".isalnum(), True)
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veris("@#$%".isalnum(), False)
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veris("xyz".isalpha(), True)
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veris("@#$%".isalpha(), False)
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veris("0123".isdigit(), True)
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veris("xyz".isdigit(), False)
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veris("xyz".islower(), True)
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veris("XYZ".islower(), False)
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veris(" ".isspace(), True)
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veris("XYZ".isspace(), False)
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veris("X".istitle(), True)
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veris("x".istitle(), False)
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veris("XYZ".isupper(), True)
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veris("xyz".isupper(), False)
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veris("xyz".startswith("x"), True)
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veris("xyz".startswith("z"), False)
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veris(u"xyz".endswith(u"z"), True)
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veris(u"xyz".endswith(u"x"), False)
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veris(u"xyz0123".isalnum(), True)
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veris(u"@#$%".isalnum(), False)
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veris(u"xyz".isalpha(), True)
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veris(u"@#$%".isalpha(), False)
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veris(u"0123".isdecimal(), True)
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veris(u"xyz".isdecimal(), False)
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veris(u"0123".isdigit(), True)
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veris(u"xyz".isdigit(), False)
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veris(u"xyz".islower(), True)
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veris(u"XYZ".islower(), False)
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veris(u"0123".isnumeric(), True)
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veris(u"xyz".isnumeric(), False)
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veris(u" ".isspace(), True)
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veris(u"XYZ".isspace(), False)
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veris(u"X".istitle(), True)
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veris(u"x".istitle(), False)
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veris(u"XYZ".isupper(), True)
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veris(u"xyz".isupper(), False)
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veris(u"xyz".startswith(u"x"), True)
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veris(u"xyz".startswith(u"z"), False)
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f = file(TESTFN, "w")
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veris(f.closed, False)
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f.close()
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veris(f.closed, True)
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import os
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os.remove(TESTFN)
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import operator
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veris(operator.truth(0), False)
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veris(operator.truth(1), True)
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veris(operator.isCallable(0), False)
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veris(operator.isCallable(len), True)
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veris(operator.isNumberType(None), False)
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veris(operator.isNumberType(0), True)
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veris(operator.not_(1), False)
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veris(operator.not_(0), True)
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veris(operator.isSequenceType(0), False)
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veris(operator.isSequenceType([]), True)
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veris(operator.contains([], 1), False)
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veris(operator.contains([1], 1), True)
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veris(operator.isMappingType([]), False)
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veris(operator.isMappingType({}), True)
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veris(operator.lt(0, 0), False)
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veris(operator.lt(0, 1), True)
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import marshal
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veris(marshal.loads(marshal.dumps(True)), True)
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veris(marshal.loads(marshal.dumps(False)), False)
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import pickle
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veris(pickle.loads(pickle.dumps(True)), True)
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veris(pickle.loads(pickle.dumps(False)), False)
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import cPickle
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veris(cPickle.loads(cPickle.dumps(True)), True)
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veris(cPickle.loads(cPickle.dumps(False)), False)
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veris(pickle.loads(cPickle.dumps(True)), True)
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veris(pickle.loads(cPickle.dumps(False)), False)
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veris(cPickle.loads(pickle.dumps(True)), True)
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veris(cPickle.loads(pickle.dumps(False)), False)
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# Test for specific backwards-compatible pickle values
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vereq(pickle.dumps(True), "I01\n.")
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vereq(pickle.dumps(False), "I00\n.")
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vereq(cPickle.dumps(True), "I01\n.")
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vereq(cPickle.dumps(False), "I00\n.")
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if verbose:
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print "All OK"
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