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import asyncio
import gc
import inspect
import re
import unittest
from contextlib import contextmanager
from test import support
support.requires_working_socket(module=True)
from asyncio import run, iscoroutinefunction
from unittest import IsolatedAsyncioTestCase
from unittest.mock import (ANY, call, AsyncMock, patch, MagicMock, Mock,
create_autospec, sentinel, _CallList, seal)
def tearDownModule():
asyncio.set_event_loop_policy(None)
class AsyncClass:
def __init__(self): pass
async def async_method(self): pass
def normal_method(self): pass
@classmethod
async def async_class_method(cls): pass
@staticmethod
async def async_static_method(): pass
class AwaitableClass:
def __await__(self): yield
async def async_func(): pass
async def async_func_args(a, b, *, c): pass
def normal_func(): pass
class NormalClass(object):
def a(self): pass
async_foo_name = f'{__name__}.AsyncClass'
normal_foo_name = f'{__name__}.NormalClass'
@contextmanager
def assertNeverAwaited(test):
with test.assertWarnsRegex(RuntimeWarning, "was never awaited$"):
yield
# In non-CPython implementations of Python, this is needed because timely
# deallocation is not guaranteed by the garbage collector.
gc.collect()
class AsyncPatchDecoratorTest(unittest.TestCase):
def test_is_coroutine_function_patch(self):
@patch.object(AsyncClass, 'async_method')
def test_async(mock_method):
self.assertTrue(iscoroutinefunction(mock_method))
test_async()
def test_is_async_patch(self):
@patch.object(AsyncClass, 'async_method')
def test_async(mock_method):
m = mock_method()
self.assertTrue(inspect.isawaitable(m))
run(m)
@patch(f'{async_foo_name}.async_method')
def test_no_parent_attribute(mock_method):
m = mock_method()
self.assertTrue(inspect.isawaitable(m))
run(m)
test_async()
test_no_parent_attribute()
def test_is_AsyncMock_patch(self):
@patch.object(AsyncClass, 'async_method')
def test_async(mock_method):
self.assertIsInstance(mock_method, AsyncMock)
test_async()
def test_is_AsyncMock_patch_staticmethod(self):
@patch.object(AsyncClass, 'async_static_method')
def test_async(mock_method):
self.assertIsInstance(mock_method, AsyncMock)
test_async()
def test_is_AsyncMock_patch_classmethod(self):
@patch.object(AsyncClass, 'async_class_method')
def test_async(mock_method):
self.assertIsInstance(mock_method, AsyncMock)
test_async()
def test_async_def_patch(self):
@patch(f"{__name__}.async_func", return_value=1)
@patch(f"{__name__}.async_func_args", return_value=2)
async def test_async(func_args_mock, func_mock):
self.assertEqual(func_args_mock._mock_name, "async_func_args")
self.assertEqual(func_mock._mock_name, "async_func")
self.assertIsInstance(async_func, AsyncMock)
self.assertIsInstance(async_func_args, AsyncMock)
self.assertEqual(await async_func(), 1)
self.assertEqual(await async_func_args(1, 2, c=3), 2)
run(test_async())
self.assertTrue(inspect.iscoroutinefunction(async_func))
class AsyncPatchCMTest(unittest.TestCase):
def test_is_async_function_cm(self):
def test_async():
with patch.object(AsyncClass, 'async_method') as mock_method:
self.assertTrue(iscoroutinefunction(mock_method))
test_async()
def test_is_async_cm(self):
def test_async():
with patch.object(AsyncClass, 'async_method') as mock_method:
m = mock_method()
self.assertTrue(inspect.isawaitable(m))
run(m)
test_async()
def test_is_AsyncMock_cm(self):
def test_async():
with patch.object(AsyncClass, 'async_method') as mock_method:
self.assertIsInstance(mock_method, AsyncMock)
test_async()
def test_async_def_cm(self):
async def test_async():
with patch(f"{__name__}.async_func", AsyncMock()):
self.assertIsInstance(async_func, AsyncMock)
self.assertTrue(inspect.iscoroutinefunction(async_func))
run(test_async())
def test_patch_dict_async_def(self):
foo = {'a': 'a'}
@patch.dict(foo, {'a': 'b'})
async def test_async():
self.assertEqual(foo['a'], 'b')
self.assertTrue(iscoroutinefunction(test_async))
run(test_async())
def test_patch_dict_async_def_context(self):
foo = {'a': 'a'}
async def test_async():
with patch.dict(foo, {'a': 'b'}):
self.assertEqual(foo['a'], 'b')
run(test_async())
class AsyncMockTest(unittest.TestCase):
def test_iscoroutinefunction_default(self):
mock = AsyncMock()
self.assertTrue(iscoroutinefunction(mock))
def test_iscoroutinefunction_function(self):
async def foo(): pass
mock = AsyncMock(foo)
self.assertTrue(iscoroutinefunction(mock))
self.assertTrue(inspect.iscoroutinefunction(mock))
def test_isawaitable(self):
mock = AsyncMock()
m = mock()
self.assertTrue(inspect.isawaitable(m))
run(m)
self.assertIn('assert_awaited', dir(mock))
def test_iscoroutinefunction_normal_function(self):
def foo(): pass
mock = AsyncMock(foo)
self.assertTrue(iscoroutinefunction(mock))
self.assertTrue(inspect.iscoroutinefunction(mock))
def test_future_isfuture(self):
loop = asyncio.new_event_loop()
fut = loop.create_future()
loop.stop()
loop.close()
mock = AsyncMock(fut)
self.assertIsInstance(mock, asyncio.Future)
class AsyncAutospecTest(unittest.TestCase):
def test_is_AsyncMock_patch(self):
@patch(async_foo_name, autospec=True)
def test_async(mock_method):
self.assertIsInstance(mock_method.async_method, AsyncMock)
self.assertIsInstance(mock_method, MagicMock)
@patch(async_foo_name, autospec=True)
def test_normal_method(mock_method):
self.assertIsInstance(mock_method.normal_method, MagicMock)
test_async()
test_normal_method()
def test_create_autospec_instance(self):
with self.assertRaises(RuntimeError):
create_autospec(async_func, instance=True)
@unittest.skip('Broken test from https://bugs.python.org/issue37251')
def test_create_autospec_awaitable_class(self):
self.assertIsInstance(create_autospec(AwaitableClass), AsyncMock)
def test_create_autospec(self):
spec = create_autospec(async_func_args)
awaitable = spec(1, 2, c=3)
async def main():
await awaitable
self.assertEqual(spec.await_count, 0)
self.assertIsNone(spec.await_args)
self.assertEqual(spec.await_args_list, [])
spec.assert_not_awaited()
run(main())
self.assertTrue(iscoroutinefunction(spec))
self.assertTrue(asyncio.iscoroutine(awaitable))
self.assertEqual(spec.await_count, 1)
self.assertEqual(spec.await_args, call(1, 2, c=3))
self.assertEqual(spec.await_args_list, [call(1, 2, c=3)])
spec.assert_awaited_once()
spec.assert_awaited_once_with(1, 2, c=3)
spec.assert_awaited_with(1, 2, c=3)
spec.assert_awaited()
with self.assertRaises(AssertionError):
spec.assert_any_await(e=1)
def test_patch_with_autospec(self):
async def test_async():
with patch(f"{__name__}.async_func_args", autospec=True) as mock_method:
awaitable = mock_method(1, 2, c=3)
self.assertIsInstance(mock_method.mock, AsyncMock)
self.assertTrue(iscoroutinefunction(mock_method))
self.assertTrue(asyncio.iscoroutine(awaitable))
self.assertTrue(inspect.isawaitable(awaitable))
# Verify the default values during mock setup
self.assertEqual(mock_method.await_count, 0)
self.assertEqual(mock_method.await_args_list, [])
self.assertIsNone(mock_method.await_args)
mock_method.assert_not_awaited()
await awaitable
self.assertEqual(mock_method.await_count, 1)
self.assertEqual(mock_method.await_args, call(1, 2, c=3))
self.assertEqual(mock_method.await_args_list, [call(1, 2, c=3)])
mock_method.assert_awaited_once()
mock_method.assert_awaited_once_with(1, 2, c=3)
mock_method.assert_awaited_with(1, 2, c=3)
mock_method.assert_awaited()
mock_method.reset_mock()
self.assertEqual(mock_method.await_count, 0)
self.assertIsNone(mock_method.await_args)
self.assertEqual(mock_method.await_args_list, [])
run(test_async())
class AsyncSpecTest(unittest.TestCase):
def test_spec_normal_methods_on_class(self):
def inner_test(mock_type):
mock = mock_type(AsyncClass)
self.assertIsInstance(mock.async_method, AsyncMock)
self.assertIsInstance(mock.normal_method, MagicMock)
for mock_type in [AsyncMock, MagicMock]:
with self.subTest(f"test method types with {mock_type}"):
inner_test(mock_type)
def test_spec_normal_methods_on_class_with_mock(self):
mock = Mock(AsyncClass)
self.assertIsInstance(mock.async_method, AsyncMock)
self.assertIsInstance(mock.normal_method, Mock)
def test_spec_normal_methods_on_class_with_mock_seal(self):
mock = Mock(AsyncClass)
seal(mock)
with self.assertRaises(AttributeError):
mock.normal_method
with self.assertRaises(AttributeError):
mock.async_method
def test_spec_mock_type_kw(self):
def inner_test(mock_type):
async_mock = mock_type(spec=async_func)
self.assertIsInstance(async_mock, mock_type)
with assertNeverAwaited(self):
self.assertTrue(inspect.isawaitable(async_mock()))
sync_mock = mock_type(spec=normal_func)
self.assertIsInstance(sync_mock, mock_type)
for mock_type in [AsyncMock, MagicMock, Mock]:
with self.subTest(f"test spec kwarg with {mock_type}"):
inner_test(mock_type)
def test_spec_mock_type_positional(self):
def inner_test(mock_type):
async_mock = mock_type(async_func)
self.assertIsInstance(async_mock, mock_type)
with assertNeverAwaited(self):
self.assertTrue(inspect.isawaitable(async_mock()))
sync_mock = mock_type(normal_func)
self.assertIsInstance(sync_mock, mock_type)
for mock_type in [AsyncMock, MagicMock, Mock]:
with self.subTest(f"test spec positional with {mock_type}"):
inner_test(mock_type)
def test_spec_as_normal_kw_AsyncMock(self):
mock = AsyncMock(spec=normal_func)
self.assertIsInstance(mock, AsyncMock)
m = mock()
self.assertTrue(inspect.isawaitable(m))
run(m)
def test_spec_as_normal_positional_AsyncMock(self):
mock = AsyncMock(normal_func)
self.assertIsInstance(mock, AsyncMock)
m = mock()
self.assertTrue(inspect.isawaitable(m))
run(m)
def test_spec_async_mock(self):
@patch.object(AsyncClass, 'async_method', spec=True)
def test_async(mock_method):
self.assertIsInstance(mock_method, AsyncMock)
test_async()
def test_spec_parent_not_async_attribute_is(self):
@patch(async_foo_name, spec=True)
def test_async(mock_method):
self.assertIsInstance(mock_method, MagicMock)
self.assertIsInstance(mock_method.async_method, AsyncMock)
test_async()
def test_target_async_spec_not(self):
@patch.object(AsyncClass, 'async_method', spec=NormalClass.a)
def test_async_attribute(mock_method):
self.assertIsInstance(mock_method, MagicMock)
self.assertFalse(inspect.iscoroutine(mock_method))
self.assertFalse(inspect.isawaitable(mock_method))
test_async_attribute()
def test_target_not_async_spec_is(self):
@patch.object(NormalClass, 'a', spec=async_func)
def test_attribute_not_async_spec_is(mock_async_func):
self.assertIsInstance(mock_async_func, AsyncMock)
test_attribute_not_async_spec_is()
def test_spec_async_attributes(self):
@patch(normal_foo_name, spec=AsyncClass)
def test_async_attributes_coroutines(MockNormalClass):
self.assertIsInstance(MockNormalClass.async_method, AsyncMock)
self.assertIsInstance(MockNormalClass, MagicMock)
test_async_attributes_coroutines()
class AsyncSpecSetTest(unittest.TestCase):
def test_is_AsyncMock_patch(self):
@patch.object(AsyncClass, 'async_method', spec_set=True)
def test_async(async_method):
self.assertIsInstance(async_method, AsyncMock)
test_async()
def test_is_async_AsyncMock(self):
mock = AsyncMock(spec_set=AsyncClass.async_method)
self.assertTrue(iscoroutinefunction(mock))
self.assertIsInstance(mock, AsyncMock)
def test_is_child_AsyncMock(self):
mock = MagicMock(spec_set=AsyncClass)
self.assertTrue(iscoroutinefunction(mock.async_method))
self.assertFalse(iscoroutinefunction(mock.normal_method))
self.assertIsInstance(mock.async_method, AsyncMock)
self.assertIsInstance(mock.normal_method, MagicMock)
self.assertIsInstance(mock, MagicMock)
def test_magicmock_lambda_spec(self):
mock_obj = MagicMock()
mock_obj.mock_func = MagicMock(spec=lambda x: x)
with patch.object(mock_obj, "mock_func") as cm:
self.assertIsInstance(cm, MagicMock)
class AsyncArguments(IsolatedAsyncioTestCase):
async def test_add_return_value(self):
async def addition(self, var): pass
mock = AsyncMock(addition, return_value=10)
output = await mock(5)
self.assertEqual(output, 10)
async def test_add_side_effect_exception(self):
class CustomError(Exception): pass
async def addition(var): pass
mock = AsyncMock(addition, side_effect=CustomError('side-effect'))
with self.assertRaisesRegex(CustomError, 'side-effect'):
await mock(5)
async def test_add_side_effect_coroutine(self):
async def addition(var):
return var + 1
mock = AsyncMock(side_effect=addition)
result = await mock(5)
self.assertEqual(result, 6)
async def test_add_side_effect_normal_function(self):
def addition(var):
return var + 1
mock = AsyncMock(side_effect=addition)
result = await mock(5)
self.assertEqual(result, 6)
async def test_add_side_effect_iterable(self):
vals = [1, 2, 3]
mock = AsyncMock(side_effect=vals)
for item in vals:
self.assertEqual(await mock(), item)
with self.assertRaises(StopAsyncIteration) as e:
await mock()
async def test_add_side_effect_exception_iterable(self):
class SampleException(Exception):
pass
vals = [1, SampleException("foo")]
mock = AsyncMock(side_effect=vals)
self.assertEqual(await mock(), 1)
with self.assertRaises(SampleException) as e:
await mock()
async def test_return_value_AsyncMock(self):
value = AsyncMock(return_value=10)
mock = AsyncMock(return_value=value)
result = await mock()
self.assertIs(result, value)
async def test_return_value_awaitable(self):
fut = asyncio.Future()
fut.set_result(None)
mock = AsyncMock(return_value=fut)
result = await mock()
self.assertIsInstance(result, asyncio.Future)
async def test_side_effect_awaitable_values(self):
fut = asyncio.Future()
fut.set_result(None)
mock = AsyncMock(side_effect=[fut])
result = await mock()
self.assertIsInstance(result, asyncio.Future)
with self.assertRaises(StopAsyncIteration):
await mock()
async def test_side_effect_is_AsyncMock(self):
effect = AsyncMock(return_value=10)
mock = AsyncMock(side_effect=effect)
result = await mock()
self.assertEqual(result, 10)
async def test_wraps_coroutine(self):
value = asyncio.Future()
ran = False
async def inner():
nonlocal ran
ran = True
return value
mock = AsyncMock(wraps=inner)
result = await mock()
self.assertEqual(result, value)
mock.assert_awaited()
self.assertTrue(ran)
async def test_wraps_normal_function(self):
value = 1
ran = False
def inner():
nonlocal ran
ran = True
return value
mock = AsyncMock(wraps=inner)
result = await mock()
self.assertEqual(result, value)
mock.assert_awaited()
self.assertTrue(ran)
async def test_await_args_list_order(self):
async_mock = AsyncMock()
mock2 = async_mock(2)
mock1 = async_mock(1)
await mock1
await mock2
async_mock.assert_has_awaits([call(1), call(2)])
self.assertEqual(async_mock.await_args_list, [call(1), call(2)])
self.assertEqual(async_mock.call_args_list, [call(2), call(1)])
class AsyncMagicMethods(unittest.TestCase):
def test_async_magic_methods_return_async_mocks(self):
m_mock = MagicMock()
self.assertIsInstance(m_mock.__aenter__, AsyncMock)
self.assertIsInstance(m_mock.__aexit__, AsyncMock)
self.assertIsInstance(m_mock.__anext__, AsyncMock)
# __aiter__ is actually a synchronous object
# so should return a MagicMock
self.assertIsInstance(m_mock.__aiter__, MagicMock)
def test_sync_magic_methods_return_magic_mocks(self):
a_mock = AsyncMock()
self.assertIsInstance(a_mock.__enter__, MagicMock)
self.assertIsInstance(a_mock.__exit__, MagicMock)
self.assertIsInstance(a_mock.__next__, MagicMock)
self.assertIsInstance(a_mock.__len__, MagicMock)
def test_magicmock_has_async_magic_methods(self):
m_mock = MagicMock()
self.assertTrue(hasattr(m_mock, "__aenter__"))
self.assertTrue(hasattr(m_mock, "__aexit__"))
self.assertTrue(hasattr(m_mock, "__anext__"))
def test_asyncmock_has_sync_magic_methods(self):
a_mock = AsyncMock()
self.assertTrue(hasattr(a_mock, "__enter__"))
self.assertTrue(hasattr(a_mock, "__exit__"))
self.assertTrue(hasattr(a_mock, "__next__"))
self.assertTrue(hasattr(a_mock, "__len__"))
def test_magic_methods_are_async_functions(self):
m_mock = MagicMock()
self.assertIsInstance(m_mock.__aenter__, AsyncMock)
self.assertIsInstance(m_mock.__aexit__, AsyncMock)
# AsyncMocks are also coroutine functions
self.assertTrue(iscoroutinefunction(m_mock.__aenter__))
self.assertTrue(iscoroutinefunction(m_mock.__aexit__))
class AsyncContextManagerTest(unittest.TestCase):
class WithAsyncContextManager:
async def __aenter__(self, *args, **kwargs): pass
async def __aexit__(self, *args, **kwargs): pass
class WithSyncContextManager:
def __enter__(self, *args, **kwargs): pass
def __exit__(self, *args, **kwargs): pass
class ProductionCode:
# Example real-world(ish) code
def __init__(self):
self.session = None
async def main(self):
async with self.session.post('https://python.org') as response:
val = await response.json()
return val
def test_set_return_value_of_aenter(self):
def inner_test(mock_type):
pc = self.ProductionCode()
pc.session = MagicMock(name='sessionmock')
cm = mock_type(name='magic_cm')
response = AsyncMock(name='response')
response.json = AsyncMock(return_value={'json': 123})
cm.__aenter__.return_value = response
pc.session.post.return_value = cm
result = run(pc.main())
self.assertEqual(result, {'json': 123})
for mock_type in [AsyncMock, MagicMock]:
with self.subTest(f"test set return value of aenter with {mock_type}"):
inner_test(mock_type)
def test_mock_supports_async_context_manager(self):
def inner_test(mock_type):
called = False
cm = self.WithAsyncContextManager()
cm_mock = mock_type(cm)
async def use_context_manager():
nonlocal called
async with cm_mock as result:
called = True
return result
cm_result = run(use_context_manager())
self.assertTrue(called)
self.assertTrue(cm_mock.__aenter__.called)
self.assertTrue(cm_mock.__aexit__.called)
cm_mock.__aenter__.assert_awaited()
cm_mock.__aexit__.assert_awaited()
# We mock __aenter__ so it does not return self
self.assertIsNot(cm_mock, cm_result)
for mock_type in [AsyncMock, MagicMock]:
with self.subTest(f"test context manager magics with {mock_type}"):
inner_test(mock_type)
def test_mock_customize_async_context_manager(self):
instance = self.WithAsyncContextManager()
mock_instance = MagicMock(instance)
expected_result = object()
mock_instance.__aenter__.return_value = expected_result
async def use_context_manager():
async with mock_instance as result:
return result
self.assertIs(run(use_context_manager()), expected_result)
def test_mock_customize_async_context_manager_with_coroutine(self):
enter_called = False
exit_called = False
async def enter_coroutine(*args):
nonlocal enter_called
enter_called = True
async def exit_coroutine(*args):
nonlocal exit_called
exit_called = True
instance = self.WithAsyncContextManager()
mock_instance = MagicMock(instance)
mock_instance.__aenter__ = enter_coroutine
mock_instance.__aexit__ = exit_coroutine
async def use_context_manager():
async with mock_instance:
pass
run(use_context_manager())
self.assertTrue(enter_called)
self.assertTrue(exit_called)
def test_context_manager_raise_exception_by_default(self):
async def raise_in(context_manager):
async with context_manager:
raise TypeError()
instance = self.WithAsyncContextManager()
mock_instance = MagicMock(instance)
with self.assertRaises(TypeError):
run(raise_in(mock_instance))
class AsyncIteratorTest(unittest.TestCase):
class WithAsyncIterator(object):
def __init__(self):
self.items = ["foo", "NormalFoo", "baz"]
def __aiter__(self): pass
async def __anext__(self): pass
def test_aiter_set_return_value(self):
mock_iter = AsyncMock(name="tester")
mock_iter.__aiter__.return_value = [1, 2, 3]
async def main():
return [i async for i in mock_iter]
result = run(main())
self.assertEqual(result, [1, 2, 3])
def test_mock_aiter_and_anext_asyncmock(self):
def inner_test(mock_type):
instance = self.WithAsyncIterator()
mock_instance = mock_type(instance)
# Check that the mock and the real thing bahave the same
# __aiter__ is not actually async, so not a coroutinefunction
self.assertFalse(iscoroutinefunction(instance.__aiter__))
self.assertFalse(iscoroutinefunction(mock_instance.__aiter__))
# __anext__ is async
self.assertTrue(iscoroutinefunction(instance.__anext__))
self.assertTrue(iscoroutinefunction(mock_instance.__anext__))
for mock_type in [AsyncMock, MagicMock]:
with self.subTest(f"test aiter and anext corourtine with {mock_type}"):
inner_test(mock_type)
def test_mock_async_for(self):
async def iterate(iterator):
accumulator = []
async for item in iterator:
accumulator.append(item)
return accumulator
expected = ["FOO", "BAR", "BAZ"]
def test_default(mock_type):
mock_instance = mock_type(self.WithAsyncIterator())
self.assertEqual(run(iterate(mock_instance)), [])
def test_set_return_value(mock_type):
mock_instance = mock_type(self.WithAsyncIterator())
mock_instance.__aiter__.return_value = expected[:]
self.assertEqual(run(iterate(mock_instance)), expected)
def test_set_return_value_iter(mock_type):
mock_instance = mock_type(self.WithAsyncIterator())
mock_instance.__aiter__.return_value = iter(expected[:])
self.assertEqual(run(iterate(mock_instance)), expected)
for mock_type in [AsyncMock, MagicMock]:
with self.subTest(f"default value with {mock_type}"):
test_default(mock_type)
with self.subTest(f"set return_value with {mock_type}"):
test_set_return_value(mock_type)
with self.subTest(f"set return_value iterator with {mock_type}"):
test_set_return_value_iter(mock_type)
class AsyncMockAssert(unittest.TestCase):
def setUp(self):
self.mock = AsyncMock()
async def _runnable_test(self, *args, **kwargs):
await self.mock(*args, **kwargs)
async def _await_coroutine(self, coroutine):
return await coroutine
def test_assert_called_but_not_awaited(self):
mock = AsyncMock(AsyncClass)
with assertNeverAwaited(self):
mock.async_method()
self.assertTrue(iscoroutinefunction(mock.async_method))
mock.async_method.assert_called()
mock.async_method.assert_called_once()
mock.async_method.assert_called_once_with()
with self.assertRaises(AssertionError):
mock.assert_awaited()
with self.assertRaises(AssertionError):
mock.async_method.assert_awaited()
def test_assert_called_then_awaited(self):
mock = AsyncMock(AsyncClass)
mock_coroutine = mock.async_method()
mock.async_method.assert_called()
mock.async_method.assert_called_once()
mock.async_method.assert_called_once_with()
with self.assertRaises(AssertionError):
mock.async_method.assert_awaited()
run(self._await_coroutine(mock_coroutine))
# Assert we haven't re-called the function
mock.async_method.assert_called_once()
mock.async_method.assert_awaited()
mock.async_method.assert_awaited_once()
mock.async_method.assert_awaited_once_with()
def test_assert_called_and_awaited_at_same_time(self):
with self.assertRaises(AssertionError):
self.mock.assert_awaited()
with self.assertRaises(AssertionError):
self.mock.assert_called()
run(self._runnable_test())
self.mock.assert_called_once()
self.mock.assert_awaited_once()
def test_assert_called_twice_and_awaited_once(self):
mock = AsyncMock(AsyncClass)
coroutine = mock.async_method()
# The first call will be awaited so no warning there
# But this call will never get awaited, so it will warn here
with assertNeverAwaited(self):
mock.async_method()
with self.assertRaises(AssertionError):
mock.async_method.assert_awaited()
mock.async_method.assert_called()
run(self._await_coroutine(coroutine))
mock.async_method.assert_awaited()
mock.async_method.assert_awaited_once()
def test_assert_called_once_and_awaited_twice(self):
mock = AsyncMock(AsyncClass)
coroutine = mock.async_method()
mock.async_method.assert_called_once()
run(self._await_coroutine(coroutine))
with self.assertRaises(RuntimeError):
# Cannot reuse already awaited coroutine
run(self._await_coroutine(coroutine))
mock.async_method.assert_awaited()
def test_assert_awaited_but_not_called(self):
with self.assertRaises(AssertionError):
self.mock.assert_awaited()
with self.assertRaises(AssertionError):
self.mock.assert_called()
with self.assertRaises(TypeError):
# You cannot await an AsyncMock, it must be a coroutine
run(self._await_coroutine(self.mock))
with self.assertRaises(AssertionError):
self.mock.assert_awaited()
with self.assertRaises(AssertionError):
self.mock.assert_called()
def test_assert_has_calls_not_awaits(self):
kalls = [call('foo')]
with assertNeverAwaited(self):
self.mock('foo')
self.mock.assert_has_calls(kalls)
with self.assertRaises(AssertionError):
self.mock.assert_has_awaits(kalls)
def test_assert_has_mock_calls_on_async_mock_no_spec(self):
with assertNeverAwaited(self):
self.mock()
kalls_empty = [('', (), {})]
self.assertEqual(self.mock.mock_calls, kalls_empty)
with assertNeverAwaited(self):
self.mock('foo')
with assertNeverAwaited(self):
self.mock('baz')
mock_kalls = ([call(), call('foo'), call('baz')])
self.assertEqual(self.mock.mock_calls, mock_kalls)
def test_assert_has_mock_calls_on_async_mock_with_spec(self):
a_class_mock = AsyncMock(AsyncClass)
with assertNeverAwaited(self):
a_class_mock.async_method()
kalls_empty = [('', (), {})]
self.assertEqual(a_class_mock.async_method.mock_calls, kalls_empty)
self.assertEqual(a_class_mock.mock_calls, [call.async_method()])
with assertNeverAwaited(self):
a_class_mock.async_method(1, 2, 3, a=4, b=5)
method_kalls = [call(), call(1, 2, 3, a=4, b=5)]
mock_kalls = [call.async_method(), call.async_method(1, 2, 3, a=4, b=5)]
self.assertEqual(a_class_mock.async_method.mock_calls, method_kalls)
self.assertEqual(a_class_mock.mock_calls, mock_kalls)
def test_async_method_calls_recorded(self):
with assertNeverAwaited(self):
self.mock.something(3, fish=None)
with assertNeverAwaited(self):
self.mock.something_else.something(6, cake=sentinel.Cake)
self.assertEqual(self.mock.method_calls, [
("something", (3,), {'fish': None}),
("something_else.something", (6,), {'cake': sentinel.Cake})
],
"method calls not recorded correctly")
self.assertEqual(self.mock.something_else.method_calls,
[("something", (6,), {'cake': sentinel.Cake})],
"method calls not recorded correctly")
def test_async_arg_lists(self):
def assert_attrs(mock):
names = ('call_args_list', 'method_calls', 'mock_calls')
for name in names:
attr = getattr(mock, name)
self.assertIsInstance(attr, _CallList)
self.assertIsInstance(attr, list)
self.assertEqual(attr, [])
assert_attrs(self.mock)
with assertNeverAwaited(self):
self.mock()
with assertNeverAwaited(self):
self.mock(1, 2)
with assertNeverAwaited(self):
self.mock(a=3)
self.mock.reset_mock()
assert_attrs(self.mock)
a_mock = AsyncMock(AsyncClass)
with assertNeverAwaited(self):
a_mock.async_method()
with assertNeverAwaited(self):
a_mock.async_method(1, a=3)
a_mock.reset_mock()
assert_attrs(a_mock)
def test_assert_awaited(self):
with self.assertRaises(AssertionError):
self.mock.assert_awaited()
run(self._runnable_test())
self.mock.assert_awaited()
def test_assert_awaited_once(self):
with self.assertRaises(AssertionError):
self.mock.assert_awaited_once()
run(self._runnable_test())
self.mock.assert_awaited_once()
run(self._runnable_test())
with self.assertRaises(AssertionError):
self.mock.assert_awaited_once()
def test_assert_awaited_with(self):
msg = 'Not awaited'
with self.assertRaisesRegex(AssertionError, msg):
self.mock.assert_awaited_with('foo')
run(self._runnable_test())
msg = 'expected await not found'
with self.assertRaisesRegex(AssertionError, msg):
self.mock.assert_awaited_with('foo')
run(self._runnable_test('foo'))
self.mock.assert_awaited_with('foo')
run(self._runnable_test('SomethingElse'))
with self.assertRaises(AssertionError):
self.mock.assert_awaited_with('foo')
def test_assert_awaited_once_with(self):
with self.assertRaises(AssertionError):
self.mock.assert_awaited_once_with('foo')
run(self._runnable_test('foo'))
self.mock.assert_awaited_once_with('foo')
run(self._runnable_test('foo'))
with self.assertRaises(AssertionError):
self.mock.assert_awaited_once_with('foo')
def test_assert_any_wait(self):
with self.assertRaises(AssertionError):
self.mock.assert_any_await('foo')
run(self._runnable_test('baz'))
with self.assertRaises(AssertionError):
self.mock.assert_any_await('foo')
run(self._runnable_test('foo'))
self.mock.assert_any_await('foo')
run(self._runnable_test('SomethingElse'))
self.mock.assert_any_await('foo')
def test_assert_has_awaits_no_order(self):
calls = [call('foo'), call('baz')]
with self.assertRaises(AssertionError) as cm:
self.mock.assert_has_awaits(calls)
self.assertEqual(len(cm.exception.args), 1)
run(self._runnable_test('foo'))
with self.assertRaises(AssertionError):
self.mock.assert_has_awaits(calls)
run(self._runnable_test('foo'))
with self.assertRaises(AssertionError):
self.mock.assert_has_awaits(calls)
run(self._runnable_test('baz'))
self.mock.assert_has_awaits(calls)
run(self._runnable_test('SomethingElse'))
self.mock.assert_has_awaits(calls)
def test_awaits_asserts_with_any(self):
class Foo:
def __eq__(self, other): pass
run(self._runnable_test(Foo(), 1))
self.mock.assert_has_awaits([call(ANY, 1)])
self.mock.assert_awaited_with(ANY, 1)
self.mock.assert_any_await(ANY, 1)
def test_awaits_asserts_with_spec_and_any(self):
class Foo:
def __eq__(self, other): pass
mock_with_spec = AsyncMock(spec=Foo)
async def _custom_mock_runnable_test(*args):
await mock_with_spec(*args)
run(_custom_mock_runnable_test(Foo(), 1))
mock_with_spec.assert_has_awaits([call(ANY, 1)])
mock_with_spec.assert_awaited_with(ANY, 1)
mock_with_spec.assert_any_await(ANY, 1)
def test_assert_has_awaits_ordered(self):
calls = [call('foo'), call('baz')]
with self.assertRaises(AssertionError):
self.mock.assert_has_awaits(calls, any_order=True)
run(self._runnable_test('baz'))
with self.assertRaises(AssertionError):
self.mock.assert_has_awaits(calls, any_order=True)
run(self._runnable_test('bamf'))
with self.assertRaises(AssertionError):
self.mock.assert_has_awaits(calls, any_order=True)
run(self._runnable_test('foo'))
self.mock.assert_has_awaits(calls, any_order=True)
run(self._runnable_test('qux'))
self.mock.assert_has_awaits(calls, any_order=True)
def test_assert_not_awaited(self):
self.mock.assert_not_awaited()
run(self._runnable_test())
with self.assertRaises(AssertionError):
self.mock.assert_not_awaited()
def test_assert_has_awaits_not_matching_spec_error(self):
async def f(x=None): pass
self.mock = AsyncMock(spec=f)
run(self._runnable_test(1))
with self.assertRaisesRegex(
AssertionError,
'^{}$'.format(
re.escape('Awaits not found.\n'
'Expected: [call()]\n'
'Actual: [call(1)]'))) as cm:
self.mock.assert_has_awaits([call()])
self.assertIsNone(cm.exception.__cause__)
with self.assertRaisesRegex(
AssertionError,
'^{}$'.format(
re.escape(
'Error processing expected awaits.\n'
"Errors: [None, TypeError('too many positional "
"arguments')]\n"
'Expected: [call(), call(1, 2)]\n'
'Actual: [call(1)]'))) as cm:
self.mock.assert_has_awaits([call(), call(1, 2)])
self.assertIsInstance(cm.exception.__cause__, TypeError)
if __name__ == '__main__':
unittest.main()
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