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import sys
from typing import Type
from unittest import TestCase
from typish import hintable, T
if sys.version_info.major * 10 + sys.version_info.minor > 35:
# All Python 3.5+ specific tests are moved to a separate module.
from test_resources.hintable import TestHintable as Base
else:
Base = TestCase
@hintable
def some_func(hint: Type[T]) -> Type[T]:
"""Some docstring"""
return hint
class TestHintable(Base):
def test_hintable_without_any_hint(self):
# Test that when a hintable function is called without hint, it
# receives None.
x = some_func()
self.assertEqual(None, x)
def test_hintable_class(self):
# Test that decorating a class raises an error.
with self.assertRaises(TypeError):
@hintable
class DecoratedClass:
...
def test_meta_data(self):
# Test that any meta data is copied properly.
self.assertEqual('Some docstring', some_func.__doc__)
def test_hintable_with_flawed_function(self):
with self.assertRaises(TypeError):
@hintable
def some_flawed_func():
...
def test_hintable_with_flawed_custom_param_name(self):
# Test that when a custom param name is used, it is checked if a
# parameter with that name is accepted by the decorated function.
with self.assertRaises(TypeError):
@hintable(param='cls')
def some_func_with_flawed_custom_param_name(hint):
return hint