def test_missing_field_str():
exc = MissingField("x", int, object)
assert (str(exc) == 'Field "x" of type builtins.int is missing '
"in builtins.object instance")
def test_missing_field_holder_class_name():
exc = MissingField("x", int, object)
assert exc.holder_class_name == "builtins.object"
exc = MissingField("x", int, List[int])
assert exc.holder_class_name == "typing.List[int]"
def test_missing_field_generic_field_type_name():
exc = MissingField("x", List[int], object)
assert exc.field_type_name == "typing.List[int]"
def test_missing_field_simple_field_type_name():
exc = MissingField("x", int, object)
assert exc.field_type_name == "builtins.int"
def test_missing_field_holder_class_name():
exc = MissingField('x', int, object)
assert exc.holder_class_name == 'builtins.object'
exc = MissingField('x', int, List[int])
assert exc.holder_class_name == 'typing.List[int]'
def test_missing_field_str():
exc = MissingField("x", int, object)
assert str(exc) == 'Field "x" of type int is missing in object instance'