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from graphql.pyutils import Undefined
def describe_invalid():
def has_repr():
assert repr(Undefined) == "Undefined"
def has_str():
assert str(Undefined) == "Undefined"
def is_hashable():
assert hash(Undefined) == hash(Undefined)
assert hash(Undefined) != hash(None)
assert hash(Undefined) != hash(False)
assert hash(Undefined) != hash(True)
def as_bool_is_false():
assert bool(Undefined) is False
def only_equal_to_itself():
assert Undefined == Undefined
assert not Undefined != Undefined
none_object = None
assert Undefined != none_object
assert not Undefined == none_object
false_object = False
assert Undefined != false_object
assert not Undefined == false_object
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