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from pytest import raises
def test_bool_callable():
assert True == bool(1)
assert False == bool(0)
assert False == bool()
def test_bool_string():
assert "True" == str(True)
assert "False" == str(False)
assert "True" == repr(True)
assert "False" == repr(False)
def test_bool_int():
assert int(True) is 1
assert int(False) is 0
assert True.__int__() is 1
def test_bool_ops():
assert True + True == 2
assert False | False is False
assert True | False is True
assert True & True is True
assert True ^ True is False
assert False ^ False is False
assert True ^ False is True
assert True & 1 == 1
assert False & 0 == 0 & 0
def test_bool_int_ops():
assert True == 1
assert 1 == True
assert False == 0
assert 0 == False
assert True is not 1
assert 1 is not True
assert False is not 0
assert 0 is not False
def test_new():
assert bool.__new__(bool, "hi") is True
assert bool.__new__(bool, "") is False
raises(TypeError, bool.__new__, int)
raises(TypeError, bool.__new__, 42)
def test_cant_subclass_bool():
with raises(TypeError):
class b(bool): pass
def test_convert_to_bool():
check = lambda o: raises(TypeError, bool, o)
class Spam(int):
def __bool__():
return 1
raises(TypeError, bool, Spam())
def test_from_bytes():
assert bool.from_bytes(b"", 'little') is False
assert bool.from_bytes(b"dasijldjs" * 157, 'little') is True
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