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✏️ test_bool.py
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# Test properties of bool promised by PEP 285 import unittest from test import test_support import os class BoolTest(unittest.TestCase): def test_subclass(self): try: class C(bool): pass except TypeError: pass else: self.fail("bool should not be subclassable") self.assertRaises(TypeError, int.__new__, bool, 0) def test_print(self): try: fo = open(test_support.TESTFN, "wb") print >> fo, False, True fo.close() fo = open(test_support.TESTFN, "rb") self.assertEqual(fo.read(), 'False True\n') finally: fo.close() os.remove(test_support.TESTFN) def test_repr(self): self.assertEqual(repr(False), 'False') self.assertEqual(repr(True), 'True') self.assertEqual(eval(repr(False)), False) self.assertEqual(eval(repr(True)), True) def test_str(self): self.assertEqual(str(False), 'False') self.assertEqual(str(True), 'True') def test_int(self): self.assertEqual(int(False), 0) self.assertIsNot(int(False), False) self.assertEqual(int(True), 1) self.assertIsNot(int(True), True) def test_float(self): self.assertEqual(float(False), 0.0) self.assertIsNot(float(False), False) self.assertEqual(float(True), 1.0) self.assertIsNot(float(True), True) def test_long(self): self.assertEqual(long(False), 0L) self.assertIsNot(long(False), False) self.assertEqual(long(True), 1L) self.assertIsNot(long(True), True) def test_math(self): self.assertEqual(+False, 0) self.assertIsNot(+False, False) self.assertEqual(-False, 0) self.assertIsNot(-False, False) self.assertEqual(abs(False), 0) self.assertIsNot(abs(False), False) self.assertEqual(+True, 1) self.assertIsNot(+True, True) self.assertEqual(-True, -1) self.assertEqual(abs(True), 1) self.assertIsNot(abs(True), True) self.assertEqual(~False, -1) self.assertEqual(~True, -2) self.assertEqual(False+2, 2) self.assertEqual(True+2, 3) self.assertEqual(2+False, 2) self.assertEqual(2+True, 3) self.assertEqual(False+False, 0) self.assertIsNot(False+False, False) self.assertEqual(False+True, 1) self.assertIsNot(False+True, True) self.assertEqual(True+False, 1) self.assertIsNot(True+False, True) self.assertEqual(True+True, 2) self.assertEqual(True-True, 0) self.assertIsNot(True-True, False) self.assertEqual(False-False, 0) self.assertIsNot(False-False, False) self.assertEqual(True-False, 1) self.assertIsNot(True-False, True) self.assertEqual(False-True, -1) self.assertEqual(True*1, 1) self.assertEqual(False*1, 0) self.assertIsNot(False*1, False) self.assertEqual(True//1, 1) self.assertIsNot(True//1, True) self.assertEqual(False//1, 0) self.assertIsNot(False//1, False) for b in False, True: for i in 0, 1, 2: self.assertEqual(b**i, int(b)**i) self.assertIsNot(b**i, bool(int(b)**i)) for a in False, True: for b in False, True: self.assertIs(a&b, bool(int(a)&int(b))) self.assertIs(a|b, bool(int(a)|int(b))) self.assertIs(a^b, bool(int(a)^int(b))) self.assertEqual(a&int(b), int(a)&int(b)) self.assertIsNot(a&int(b), bool(int(a)&int(b))) self.assertEqual(a|int(b), int(a)|int(b)) self.assertIsNot(a|int(b), bool(int(a)|int(b))) self.assertEqual(a^int(b), int(a)^int(b)) self.assertIsNot(a^int(b), bool(int(a)^int(b))) self.assertEqual(int(a)&b, int(a)&int(b)) self.assertIsNot(int(a)&b, bool(int(a)&int(b))) self.assertEqual(int(a)|b, int(a)|int(b)) self.assertIsNot(int(a)|b, bool(int(a)|int(b))) self.assertEqual(int(a)^b, int(a)^int(b)) self.assertIsNot(int(a)^b, bool(int(a)^int(b))) self.assertIs(1==1, True) self.assertIs(1==0, False) self.assertIs(0<1, True) self.assertIs(1<0, False) self.assertIs(0<=0, True) self.assertIs(1<=0, False) self.assertIs(1>0, True) self.assertIs(1>1, False) self.assertIs(1>=1, True) self.assertIs(0>=1, False) self.assertIs(0!=1, True) self.assertIs(0!=0, False) x = [1] self.assertIs(x is x, True) self.assertIs(x is not x, False) self.assertIs(1 in x, True) self.assertIs(0 in x, False) self.assertIs(1 not in x, False) self.assertIs(0 not in x, True) x = {1: 2} self.assertIs(x is x, True) self.assertIs(x is not x, False) self.assertIs(1 in x, True) self.assertIs(0 in x, False) self.assertIs(1 not in x, False) self.assertIs(0 not in x, True) self.assertIs(not True, False) self.assertIs(not False, True) def test_convert(self): self.assertRaises(TypeError, bool, 42, 42) self.assertIs(bool(10), True) self.assertIs(bool(1), True) self.assertIs(bool(-1), True) self.assertIs(bool(0), False) self.assertIs(bool("hello"), True) self.assertIs(bool(""), False) self.assertIs(bool(), False) def test_format(self): self.assertEqual("%d" % False, "0") self.assertEqual("%d" % True, "1") self.assertEqual("%x" % False, "0") self.assertEqual("%x" % True, "1") def test_hasattr(self): self.assertIs(hasattr([], "append"), True) self.assertIs(hasattr([], "wobble"), False) def test_callable(self): self.assertIs(callable(len), True) self.assertIs(callable(1), False) def test_isinstance(self): self.assertIs(isinstance(True, bool), True) self.assertIs(isinstance(False, bool), True) self.assertIs(isinstance(True, int), True) self.assertIs(isinstance(False, int), True) self.assertIs(isinstance(1, bool), False) self.assertIs(isinstance(0, bool), False) def test_issubclass(self): self.assertIs(issubclass(bool, int), True) self.assertIs(issubclass(int, bool), False) def test_haskey(self): self.assertIs(1 in {}, False) self.assertIs(1 in {1:1}, True) with test_support.check_py3k_warnings(): self.assertIs({}.has_key(1), False) self.assertIs({1:1}.has_key(1), True) def test_string(self): self.assertIs("xyz".endswith("z"), True) self.assertIs("xyz".endswith("x"), False) self.assertIs("xyz0123".isalnum(), True) self.assertIs("@#$%".isalnum(), False) self.assertIs("xyz".isalpha(), True) self.assertIs("@#$%".isalpha(), False) self.assertIs("0123".isdigit(), True) self.assertIs("xyz".isdigit(), False) self.assertIs("xyz".islower(), True) self.assertIs("XYZ".islower(), False) self.assertIs(" ".isspace(), True) self.assertIs("XYZ".isspace(), False) self.assertIs("X".istitle(), True) self.assertIs("x".istitle(), False) self.assertIs("XYZ".isupper(), True) self.assertIs("xyz".isupper(), False) self.assertIs("xyz".startswith("x"), True) self.assertIs("xyz".startswith("z"), False) if test_support.have_unicode: self.assertIs(unicode("xyz", 'ascii').endswith(unicode("z", 'ascii')), True) self.assertIs(unicode("xyz", 'ascii').endswith(unicode("x", 'ascii')), False) self.assertIs(unicode("xyz0123", 'ascii').isalnum(), True) self.assertIs(unicode("@#$%", 'ascii').isalnum(), False) self.assertIs(unicode("xyz", 'ascii').isalpha(), True) self.assertIs(unicode("@#$%", 'ascii').isalpha(), False) self.assertIs(unicode("0123", 'ascii').isdecimal(), True) self.assertIs(unicode("xyz", 'ascii').isdecimal(), False) self.assertIs(unicode("0123", 'ascii').isdigit(), True) self.assertIs(unicode("xyz", 'ascii').isdigit(), False) self.assertIs(unicode("xyz", 'ascii').islower(), True) self.assertIs(unicode("XYZ", 'ascii').islower(), False) self.assertIs(unicode("0123", 'ascii').isnumeric(), True) self.assertIs(unicode("xyz", 'ascii').isnumeric(), False) self.assertIs(unicode(" ", 'ascii').isspace(), True) self.assertIs(unicode("XYZ", 'ascii').isspace(), False) self.assertIs(unicode("X", 'ascii').istitle(), True) self.assertIs(unicode("x", 'ascii').istitle(), False) self.assertIs(unicode("XYZ", 'ascii').isupper(), True) self.assertIs(unicode("xyz", 'ascii').isupper(), False) self.assertIs(unicode("xyz", 'ascii').startswith(unicode("x", 'ascii')), True) self.assertIs(unicode("xyz", 'ascii').startswith(unicode("z", 'ascii')), False) def test_boolean(self): self.assertEqual(True & 1, 1) self.assertNotIsInstance(True & 1, bool) self.assertIs(True & True, True) self.assertEqual(True | 1, 1) self.assertNotIsInstance(True | 1, bool) self.assertIs(True | True, True) self.assertEqual(True ^ 1, 0) self.assertNotIsInstance(True ^ 1, bool) self.assertIs(True ^ True, False) def test_fileclosed(self): try: f = file(test_support.TESTFN, "w") self.assertIs(f.closed, False) f.close() self.assertIs(f.closed, True) finally: os.remove(test_support.TESTFN) def test_types(self): # types are always true. for t in [bool, complex, dict, file, float, int, list, long, object, set, str, tuple, type]: self.assertIs(bool(t), True) def test_operator(self): import operator self.assertIs(operator.truth(0), False) self.assertIs(operator.truth(1), True) with test_support.check_py3k_warnings(): self.assertIs(operator.isCallable(0), False) self.assertIs(operator.isCallable(len), True) self.assertIs(operator.isNumberType(None), False) self.assertIs(operator.isNumberType(0), True) self.assertIs(operator.not_(1), False) self.assertIs(operator.not_(0), True) self.assertIs(operator.isSequenceType(0), False) self.assertIs(operator.isSequenceType([]), True) self.assertIs(operator.contains([], 1), False) self.assertIs(operator.contains([1], 1), True) self.assertIs(operator.isMappingType(1), False) self.assertIs(operator.isMappingType({}), True) self.assertIs(operator.lt(0, 0), False) self.assertIs(operator.lt(0, 1), True) self.assertIs(operator.is_(True, True), True) self.assertIs(operator.is_(True, False), False) self.assertIs(operator.is_not(True, True), False) self.assertIs(operator.is_not(True, False), True) def test_marshal(self): import marshal self.assertIs(marshal.loads(marshal.dumps(True)), True) self.assertIs(marshal.loads(marshal.dumps(False)), False) def test_pickle(self): import pickle for proto in range(pickle.HIGHEST_PROTOCOL + 1): self.assertIs(pickle.loads(pickle.dumps(True, proto)), True) self.assertIs(pickle.loads(pickle.dumps(False, proto)), False) def test_cpickle(self): import cPickle for proto in range(cPickle.HIGHEST_PROTOCOL + 1): self.assertIs(cPickle.loads(cPickle.dumps(True, proto)), True) self.assertIs(cPickle.loads(cPickle.dumps(False, proto)), False) def test_mixedpickle(self): import pickle, cPickle for proto in range(pickle.HIGHEST_PROTOCOL + 1): self.assertIs(pickle.loads(cPickle.dumps(True, proto)), True) self.assertIs(pickle.loads(cPickle.dumps(False, proto)), False) self.assertIs(cPickle.loads(pickle.dumps(True, proto)), True) self.assertIs(cPickle.loads(pickle.dumps(False, proto)), False) def test_picklevalues(self): import pickle, cPickle # Test for specific backwards-compatible pickle values self.assertEqual(pickle.dumps(True, protocol=0), "I01\n.") self.assertEqual(pickle.dumps(False, protocol=0), "I00\n.") self.assertEqual(cPickle.dumps(True, protocol=0), "I01\n.") self.assertEqual(cPickle.dumps(False, protocol=0), "I00\n.") self.assertEqual(pickle.dumps(True, protocol=1), "I01\n.") self.assertEqual(pickle.dumps(False, protocol=1), "I00\n.") self.assertEqual(cPickle.dumps(True, protocol=1), "I01\n.") self.assertEqual(cPickle.dumps(False, protocol=1), "I00\n.") self.assertEqual(pickle.dumps(True, protocol=2), b'\x80\x02\x88.') self.assertEqual(pickle.dumps(False, protocol=2), b'\x80\x02\x89.') self.assertEqual(cPickle.dumps(True, protocol=2), b'\x80\x02\x88.') self.assertEqual(cPickle.dumps(False, protocol=2), b'\x80\x02\x89.') def test_convert_to_bool(self): # Verify that TypeError occurs when bad things are returned # from __nonzero__(). This isn't really a bool test, but # it's related. check = lambda o: self.assertRaises(TypeError, bool, o) class Foo(object): def __nonzero__(self): return self check(Foo()) class Bar(object): def __nonzero__(self): return "Yes" check(Bar()) class Baz(int): def __nonzero__(self): return self check(Baz()) def test_main(): test_support.run_unittest(BoolTest) if __name__ == "__main__": test_main()
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