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"""Check invalid value returned by __bool__ """
# pylint: disable=too-few-public-methods,missing-docstring,no-self-use,import-error, useless-object-inheritance
import six
from missing import Missing
class FirstGoodBool(object):
"""__bool__ returns <type 'bool'>"""
def __bool__(self):
return True
class SecondGoodBool(object):
"""__bool__ returns <type 'bool'>"""
def __bool__(self):
return bool(0)
class BoolMetaclass(type):
def __bool__(cls):
return True
@six.add_metaclass(BoolMetaclass)
class ThirdGoodBool(object):
"""Bool through the metaclass."""
class FirstBadBool(object):
""" __bool__ returns an integer """
def __bool__(self): # [invalid-bool-returned]
return 1
class SecondBadBool(object):
""" __bool__ returns str """
def __bool__(self): # [invalid-bool-returned]
return "True"
class ThirdBadBool(object):
""" __bool__ returns node which does not have 'value' in AST """
def __bool__(self): # [invalid-bool-returned]
return lambda: 3
class AmbigousBool(object):
""" Uninferable return value """
__bool__ = lambda self: Missing
class AnotherAmbiguousBool(object):
"""Potential uninferable return value"""
def __bool__(self):
return bool(Missing)
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