def test_nullable_validator_invalid_value_should_return_false(self):
"""==> nullable validator invalid value should return False"""
for item in self.nullable_fixtures:
# Any is always valid
if item.get('annotation') is not typing.Any:
self.assertFalse(
NullableValidator(TypeHint(item.get('annotation')),
'invalid_value'))
self.assertFalse(
NullableValidator(TypeHint(item.get('annotation')), 666))
self.assertFalse(
NullableValidator(TypeHint(item.get('annotation')), True))
def is_valid(self) -> bool:
if not self.is_supported:
return False
# value does not match alias type
if self.value is not self.hint.origin and not isinstance(
self.value, self.valid_types):
return False
# Alias inconsitently returns TypeVar object or None when no parameters given ... stupid python
# will not validate recursively, still value does match alias type though
if len(self.hint.types) == 0 or isinstance(self.hint.types[0],
TypeVar):
return True
# validate keys
hint = TypeHint(self.hint.types[0])
nullablevalidator = NullableValidator(hint)
stdtypevalidator = StdtypeValidator(hint)
unionvalidator = UnionValidator(hint)
for value in self.value.keys():
if not (nullablevalidator.validate(value)
or stdtypevalidator.validate(value)
or unionvalidator.validate(value)):
return False
# validate values
hint = TypeHint(self.hint.types[1])
# Any is always valid
if AnyValidator().supports(hint):
return True
nullablevalidator = NullableValidator(hint)
stdtypevalidator = StdtypeValidator(hint)
classvalidator = ClassValidator(hint)
callablevalidator = CallableValidator(hint)
aliasvalidator = AliasValidator(hint)
listvalidator = ListValidator(hint)
dictvalidator = DictValidator(hint)
unionvalidator = UnionValidator(hint)
for value in self.value.values():
if not (nullablevalidator.validate(value)
or stdtypevalidator.validate(value)
or classvalidator.validate(value)
or callablevalidator.validate(value)
or aliasvalidator.validate(value)
or listvalidator.validate(value)
or dictvalidator.validate(value)
or unionvalidator.validate(value)):
return False
return True
def test_nested_any_in_dict_should_return_true(self):
"""==> nested any in dict should return True"""
hint = TypeHint(typing.Dict[int, typing.Any])
validator = DictValidator(hint, self.nested_union_expected_valid)
self.assertTrue(validator)
validator = DictValidator(hint, self.nested_union_expected_invalid)
self.assertTrue(validator)
def test_union_validator_nested_any_should_return_true(self):
"""==> union validator nested Any should return True"""
hint = TypeHint(typing.Union[int, typing.Any])
validator = UnionValidator(hint, b'valid')
self.assertTrue(validator)
validator = UnionValidator(hint, 666)
self.assertTrue(validator)
def test_nested_any_in_list_should_return_true(self):
"""==> nested any in list should return true"""
hint = TypeHint(typing.List[typing.Any])
validator = ListValidator(hint, self.list_expected_valid)
self.assertTrue(validator)
validator = ListValidator(hint, self.list_expected_invalid)
self.assertTrue(validator)
def test_hint_setter(self):
"""==> abstract validator value in setter should not raise TypeError"""
try:
abstractvalidator = AbstractValidator()
abstractvalidator.hint = TypeHint(str)
except Exception as e:
self.fail(e)
def test_alias_validator_invalid_value_should_return_false(self):
"""==> alias validator invalid value should return False"""
for item in self.alias_no_argument_fixtures:
# seems like every object is hashable ... stupid python
if item.get('alias') != 'Hashable':
hint = TypeHint(item.get('annotation'))
validator = AliasValidator(hint, None)
self.assertFalse(validator)
def test_union_validator_valid_value_should_return_true(self):
"""==> union validator valid value should return True"""
for item in self.union_fixtures:
hint = TypeHint(item.get('annotation'))
validator = UnionValidator(hint, 'valid')
self.assertTrue(validator.is_valid)
validator = UnionValidator(hint, 666)
self.assertTrue(validator.is_valid)
def is_valid(self) -> bool:
if self.is_supported:
for annotation in self.hint.types:
hint = TypeHint(annotation)
if AnyValidator(hint, self.value) or \
NullableValidator(hint, self.value) or \
StdtypeValidator(hint, self.value) or \
ClassValidator(hint, self.value) or \
CallableValidator(hint, self.value) or \
AliasValidator(hint, self.value) or \
ListValidator(hint, self.value) or \
DictValidator(hint, self.value) or \
UnionValidator(hint, self.value):
return True
return False
def _not_blank(function: Callable, fixed_kwargs: Dict[str, Any]) -> None:
if not callable(function):
raise TypeError('_type_check: function must be callable')
if not isinstance(fixed_kwargs, dict):
raise TypeError(
'_type_check: fixed_kwargs must be set to a dictionary')
# get type hints (typing.get_type_hints method requires to import unnecessary module)
for arg_name, arg_hint in function.__annotations__.items():
# ignore "return" (will raise "KeyError" when accessing "fixed_kwargs[arg_name]")
if arg_name == 'return':
continue
hint = TypeHint(arg_hint)
# there is no way to validate custom property
if hint.category == 'property':
continue
value = fixed_kwargs[arg_name]
if not NotBlankValidator(hint, value):
raise ValueError('{} cannot be blank'.format(
function.__qualname__))
def _type_check(function: Callable, fixed_kwargs: Dict[str, Any]) -> None:
if not callable(function):
raise TypeError('_type_check: function must be callable')
if not isinstance(fixed_kwargs, dict):
raise TypeError(
'_type_check: fixed_kwargs must be set to a dictionary')
# get type hints (typing.get_type_hints method requires to import unnecessary module)
for arg_name, arg_hint in function.__annotations__.items():
# ignore "return" (will raise "KeyError" when accessing "fixed_kwargs[arg_name]")
if arg_name == 'return':
continue
hint = TypeHint(arg_hint)
# there is no way to validate custom property
if hint.category == 'property':
continue
value = fixed_kwargs[arg_name]
if not (NullableValidator(hint, value) or StdtypeValidator(
hint, value) or ClassValidator(hint, value)
or CallableValidator(hint, value)
or AliasValidator(hint, value) or ListValidator(hint, value)
or DictValidator(hint, value) or UnionValidator(hint, value)):
raise TypeError('{} must be set to {}, {} given'.format(
function.__qualname__, hint.types, type(value)))
def test_stdtype_validator_valid_value_should_return_true(self):
"""==> stdtype validator valid value should return True"""
for item in self.stdtype_fixtures:
self.assertTrue(
StdtypeValidator(TypeHint(item.get('type')),
item.get('valid')))
def test_nested_union_should_return_true(self):
"""==> nested union should return True"""
for item in self.nested_union_fixtures:
hint = TypeHint(item.get('annotation'))
validator = DictValidator(hint, self.nested_union_expected_valid)
self.assertTrue(validator)
def test_nested_dict_validator_should_return_true(self):
"""==> nested dict validator should return True"""
for item in self.nested_dict_fixtures:
self.assertTrue(
DictValidator(TypeHint(item.get('annotation')),
self.nested_dict_expected_valid))
def test_dict_validator_alias_with_no_parameter_should_return_true(self):
"""==> dict validator alias with no parameter should return True"""
for item in self.dict_no_parameter_fixtures:
hint = TypeHint(item.get('annotation'))
validator = DictValidator(hint, self.dict_expected_valid)
self.assertTrue(validator)
def test_dict_validator_should_return_false(self):
"""==> dict validator should return false"""
for item in self.dict_fixtures:
self.assertFalse(
DictValidator(TypeHint(item.get('annotation')),
self.dict_expected_invalid))
def test_nullable_validator_valid_value_should_return_true(self):
"""==> nullable validator valid value should return True"""
for item in self.nullable_fixtures:
self.assertTrue(
NullableValidator(TypeHint(item.get('annotation')), None))
def test_list_validator_should_return_true(self):
"""==> list validator should return true"""
for item in self.list_fixtures:
self.assertTrue(
ListValidator(TypeHint(item.get('annotation')),
self.list_expected_valid))
def test_callable_validator_invalid_value_should_return_false(self):
"""==> callable validator invalid value should return False"""
for item in self.callable_fixtures:
self.assertFalse(
CallableValidator(TypeHint(item.get('annotation')),
'invalid_value'))
def test_nested_list_validator_should_return_true(self):
"""==> nested list validator should return true"""
for item in self.nested_list_fixtures:
hint = TypeHint(item.get('annotation'))
validator = ListValidator(hint, self.nested_list_expected_valid)
self.assertTrue(validator)
def test_not_blank_validator_valid_value_should_return_true(self):
"""==> not_blank validator valid value should return True"""
for item in self.stdtype_fixtures:
self.assertTrue(
NotBlankValidator(TypeHint(item.get('type')),
item.get('valid')))
def test_stdtype_validator_invalid_value_should_return_false(self):
"""==> stdtype validator invalid value should return False"""
for item in self.stdtype_fixtures:
self.assertFalse(
StdtypeValidator(TypeHint(item.get('type')),
item.get('invalid')))
def test_union_validator_invalid_value_should_return_false(self):
"""==> union validator invalid value should return False"""
for item in self.union_fixtures:
hint = TypeHint(item.get('annotation'))
validator = UnionValidator(hint, b'invalid')
self.assertFalse(validator.is_valid)
def test_nested_union_should_return_false(self):
"""==> nested union should return false"""
for item in self.nested_union_fixtures:
hint = TypeHint(item.get('annotation'))
validator = ListValidator(hint, self.nested_union_expected_invalid)
self.assertFalse(validator)
def test_alias_validator_invalid_value_should_return_false(self):
"""==> alias validator invalid value should return False"""
for item in self.alias_fixtures:
hint = TypeHint(item.get('annotation'))
validator = AliasValidator(hint, None)
self.assertFalse(validator)
def test_any_validator_should_return_false(self):
"""==> Any should always return False"""
for value in self.expected_valid:
self.assertFalse(AnyValidator(TypeHint(int), value))
def test_alias_validator_valid_value_should_return_true(self):
"""==> alias validator valid value should return True"""
for item in self.alias_no_argument_fixtures:
hint = TypeHint(item.get('annotation'))
validator = AliasValidator(hint, item.get('origin'))
self.assertTrue(validator)
def test_any_validator_should_return_true(self):
"""==> Any should always return True"""
for value in self.expected_valid:
self.assertTrue(AnyValidator(TypeHint(Any), value))
def test_callable_validator_valid_value_should_return_true(self):
"""==> callable validator valid value should return True"""
for item in self.callable_fixtures:
hint = TypeHint(item.get('annotation'))
validator = CallableValidator(hint, lambda: True)
self.assertTrue(validator.is_valid)
def test_constructor_typehint(self):
"""==> abstract validator valid value in constructor should not raise TypeError"""
try:
AbstractValidator(TypeHint(str), 'value')
except Exception as e:
self.fail(e)
