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# Copyright (C) 2007-2012 Michael Foord & the mock team
# E-mail: fuzzyman AT voidspace DOT org DOT uk
# http://www.voidspace.org.uk/python/mock/
import inspect
from tests.support import unittest2
from mock import Mock, mocksignature, patch
class Something(object):
def __init__(self, foo, bar=10):
pass
def __call__(self, foo, bar=5):
pass
something = Something(1, 2)
def f(a, b, c):
pass
class TestMockSignature(unittest2.TestCase):
def test_function(self):
def f(a):
pass
mock = Mock()
f2 = mocksignature(f, mock)
self.assertIs(f2.mock, mock)
self.assertRaises(TypeError, f2)
mock.return_value = 3
self.assertEqual(f2('foo'), 3)
mock.assert_called_with('foo')
f2.mock.assert_called_with('foo')
def test_function_without_explicit_mock(self):
def f(a):
pass
f2 = mocksignature(f)
self.assertIsInstance(f2.mock, Mock)
self.assertRaises(TypeError, f2)
f2.mock.return_value = 3
self.assertEqual(f2('foo'), 3)
f2.mock.assert_called_with('foo')
def test_method(self):
class Foo(object):
def method(self, a, b):
pass
f = Foo()
mock = Mock()
mock.return_value = 3
f.method = mocksignature(f.method, mock)
self.assertEqual(f.method('foo', 'bar'), 3)
mock.assert_called_with('foo', 'bar')
def test_function_with_defaults(self):
def f(a, b=None):
pass
mock = Mock()
f2 = mocksignature(f, mock)
f2(3)
mock.assert_called_with(3, None)
mock.reset_mock()
f2(1, 7)
mock.assert_called_with(1, 7)
mock.reset_mock()
f2(b=1, a=7)
mock.assert_called_with(7, 1)
mock.reset_mock()
a = object()
def f(a=a):
pass
f2 = mocksignature(f, mock)
f2()
mock.assert_called_with(a)
def test_introspection(self):
def f(a, *args, **kwargs):
pass
f2 = mocksignature(f, f)
self.assertEqual(inspect.getargspec(f), inspect.getargspec(f2))
def f(a, b=None, c=3, d=object()):
pass
f2 = mocksignature(f, f)
self.assertEqual(inspect.getargspec(f), inspect.getargspec(f2))
def test_function_with_varargs_and_kwargs(self):
def f(a, b=None, *args, **kwargs):
return (a, b, args, kwargs)
f2 = mocksignature(f, f)
self.assertEqual(f2(3, 4, 5, x=6, y=9), (3, 4, (5,), {'x': 6, 'y': 9}))
self.assertEqual(f2(3, x=6, y=9, b='a'), (3, 'a', (), {'x': 6, 'y': 9}))
def f(*args):
pass
g = mocksignature(f)
g.mock.return_value = 3
self.assertEqual(g(1, 2, 'many'), 3)
self.assertEqual(g(), 3)
self.assertRaises(TypeError, lambda: g(a=None))
def f(**kwargs):
pass
g = mocksignature(f)
g.mock.return_value = 3
self.assertEqual(g(), 3)
self.assertEqual(g(a=None, b=None), 3)
self.assertRaises(TypeError, lambda: g(None))
def test_mocksignature_with_patch(self):
mock = Mock()
def f(a, b, c):
pass
mock.f = f
@patch.object(mock, 'f', mocksignature=True)
def test(mock_f):
self.assertRaises(TypeError, mock.f, 3, 4)
self.assertRaises(TypeError, mock.f, 3, 4, 5, 6)
mock.f(1, 2, 3)
mock_f.assert_called_with(1, 2, 3)
mock.f.mock.assert_called_with(1, 2, 3)
test()
@patch('tests.support.SomeClass.wibble', mocksignature=True)
def test(mock_wibble):
from tests.support import SomeClass
instance = SomeClass()
self.assertRaises(TypeError, instance.wibble, 1)
instance.wibble()
mock_wibble.assert_called_with(instance)
instance.wibble.mock.assert_called_with(instance)
test()
@unittest2.skipUnless(__debug__, 'assert disabled when run with -O/OO')
def test_mocksignature_with_reserved_arg(self):
def f(_mock_):
pass
self.assertRaises(AssertionError, lambda: mocksignature(f))
def f(_mock_=None):
pass
self.assertRaises(AssertionError, lambda: mocksignature(f))
def f(*_mock_):
pass
self.assertRaises(AssertionError, lambda: mocksignature(f))
def f(**_mock_):
pass
self.assertRaises(AssertionError, lambda: mocksignature(f))
def test_mocksignature_class(self):
MockedSomething = mocksignature(Something)
result = MockedSomething(5, 23)
self.assertIs(result, MockedSomething.mock.return_value)
MockedSomething(1)
MockedSomething.mock.assert_caled_with(1, 10)
self.assertRaises(TypeError, MockedSomething)
def test_mocksignature_callable(self):
mocked_something = mocksignature(something)
result = mocked_something(5, 23)
self.assertIs(result, mocked_something.mock.return_value)
mocked_something(1)
mocked_something.mock.assert_caled_with(1, 5)
self.assertRaises(TypeError, mocked_something)
def test_patch_mocksignature_class(self):
original_something = Something
something_name = '%s.Something' % __name__
@patch(something_name, mocksignature=True)
def test(MockSomething):
Something(3, 5)
MockSomething.assert_called_with(3, 5)
Something(6)
MockSomething.assert_called_with(6, 10)
self.assertRaises(TypeError, Something)
test()
self.assertIs(Something, original_something)
def test_patch_mocksignature_callable(self):
original_something = something
something_name = '%s.something' % __name__
@patch(something_name, mocksignature=True)
def test(MockSomething):
something(3, 4)
MockSomething.assert_called_with(3, 4)
something(6)
MockSomething.assert_called_with(6, 5)
self.assertRaises(TypeError, something)
test()
self.assertIs(something, original_something)
def test_patchobject_mocksignature(self):
class something(object):
def meth(self, a, b, c):
pass
original = something.__dict__['meth']
@patch.object(something, 'meth', mocksignature=True)
def test(_):
self.assertIsNot(something.__dict__['meth'], original)
thing = something()
thing.meth(1, 2, 3)
self.assertRaises(TypeError, thing.meth, 1)
test()
self.assertIs(something.__dict__['meth'], original)
thing = something()
original = thing.meth
@patch.object(thing, 'meth', mocksignature=True)
def test(_):
thing.meth(1, 2, 3)
self.assertRaises(TypeError, thing.meth, 1)
test()
self.assertEqual(thing.meth, original)
# when patching instance methods using mocksignatures we used to
# replace the bound method with an instance attribute on unpatching.
self.assertNotIn('meth', thing.__dict__)
def test_assert_called_with(self):
func = mocksignature(f)
self.assertRaises(AssertionError, func.assert_called_with)
self.assertRaises(AssertionError, func.assert_called_once_with)
func(1, 2, 3)
func.assert_called_with(1, 2, 3)
self.assertRaises(AssertionError, func.assert_called_with, 4, 5, 6)
func.assert_called_once_with(1, 2, 3)
self.assertRaises(AssertionError, func.assert_called_once_with,
4, 5, 6)
def test_mock_attributes(self):
func = mocksignature(f)
return_value = func.return_value
self.assertIsInstance(return_value, Mock)
self.assertIsNone(func.side_effect)
self.assertFalse(func.called)
self.assertIsNone(func.call_args)
self.assertEqual(func.call_count, 0)
self.assertEqual(func.method_calls, [])
self.assertEqual(func.call_args_list, [])
self.assertIs(func._mock_children, func.mock._mock_children)
self.assertIs(func(1, 2, 3), return_value)
self.assertTrue(func.called)
self.assertEqual(func.call_args, ((1, 2, 3), {}))
self.assertEqual(func.call_count, 1)
self.assertEqual(func.method_calls, [])
self.assertEqual(func.call_args_list, [((1, 2, 3), {})])
func.method_calls.append('foo')
return_value()
func.reset_mock()
self.assertEqual(return_value.call_count, False)
self.assertFalse(func.called)
self.assertIsNone(func.call_args)
self.assertEqual(func.call_count, 0)
self.assertEqual(func.method_calls, [])
self.assertEqual(func.call_args_list, [])
self.assertIs(func._mock_children, func.mock._mock_children)
func.side_effect = KeyError
self.assertRaises(KeyError, func, 1, 2, 3)
self.assertTrue(func.called)
func.side_effect = None
func.return_value = 'foo'
self.assertEqual(func(1, 2, 3), 'foo')
self.assertEqual(func.call_count, 2)
def test_return_value_from_existing_mock(self):
mock = Mock(return_value='foo')
func = mocksignature(f, mock)
self.assertEqual(func(1, 2, 3), 'foo')
mock.return_value = 'bar'
self.assertEqual(func(1, 2, 3), 'bar')
def test_side_effect_from_existing_mock(self):
mock = Mock(side_effect=KeyError)
func = mocksignature(f, mock)
self.assertRaises(KeyError, func, 1, 2, 3)
mock.side_effect = NameError
self.assertRaises(NameError, func, 1, 2, 3)
if __name__ == '__main__':
unittest2.main()
|
