python-3.6.zip added from Github

README.cosmo contains the necessary links.
This commit is contained in:
ahgamut 2021-08-08 09:38:33 +05:30 committed by Justine Tunney
parent 75fc601ff5
commit 0c4c56ff39
4219 changed files with 1968626 additions and 0 deletions

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import os
import sys
import unittest
here = os.path.dirname(__file__)
loader = unittest.defaultTestLoader
def load_tests(*args):
suite = unittest.TestSuite()
for fn in os.listdir(here):
if fn.startswith("test") and fn.endswith(".py"):
modname = "unittest.test.testmock." + fn[:-3]
__import__(modname)
module = sys.modules[modname]
suite.addTest(loader.loadTestsFromModule(module))
return suite

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import os
import unittest
def load_tests(loader, standard_tests, pattern):
# top level directory cached on loader instance
this_dir = os.path.dirname(__file__)
pattern = pattern or "test*.py"
# We are inside unittest.test.testmock, so the top-level is three notches up
top_level_dir = os.path.dirname(os.path.dirname(os.path.dirname(this_dir)))
package_tests = loader.discover(start_dir=this_dir, pattern=pattern,
top_level_dir=top_level_dir)
standard_tests.addTests(package_tests)
return standard_tests
if __name__ == '__main__':
unittest.main()

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def is_instance(obj, klass):
"""Version of is_instance that doesn't access __class__"""
return issubclass(type(obj), klass)
class SomeClass(object):
class_attribute = None
def wibble(self):
pass
class X(object):
pass
def examine_warnings(func):
def wrapper():
with catch_warnings(record=True) as ws:
func(ws)
return wrapper

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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 unittest
from unittest.test.testmock.support import is_instance, X, SomeClass
from unittest.mock import (
Mock, MagicMock, NonCallableMagicMock,
NonCallableMock, patch, create_autospec,
CallableMixin
)
class TestCallable(unittest.TestCase):
def assertNotCallable(self, mock):
self.assertTrue(is_instance(mock, NonCallableMagicMock))
self.assertFalse(is_instance(mock, CallableMixin))
def test_non_callable(self):
for mock in NonCallableMagicMock(), NonCallableMock():
self.assertRaises(TypeError, mock)
self.assertFalse(hasattr(mock, '__call__'))
self.assertIn(mock.__class__.__name__, repr(mock))
def test_hierarchy(self):
self.assertTrue(issubclass(MagicMock, Mock))
self.assertTrue(issubclass(NonCallableMagicMock, NonCallableMock))
def test_attributes(self):
one = NonCallableMock()
self.assertTrue(issubclass(type(one.one), Mock))
two = NonCallableMagicMock()
self.assertTrue(issubclass(type(two.two), MagicMock))
def test_subclasses(self):
class MockSub(Mock):
pass
one = MockSub()
self.assertTrue(issubclass(type(one.one), MockSub))
class MagicSub(MagicMock):
pass
two = MagicSub()
self.assertTrue(issubclass(type(two.two), MagicSub))
def test_patch_spec(self):
patcher = patch('%s.X' % __name__, spec=True)
mock = patcher.start()
self.addCleanup(patcher.stop)
instance = mock()
mock.assert_called_once_with()
self.assertNotCallable(instance)
self.assertRaises(TypeError, instance)
def test_patch_spec_set(self):
patcher = patch('%s.X' % __name__, spec_set=True)
mock = patcher.start()
self.addCleanup(patcher.stop)
instance = mock()
mock.assert_called_once_with()
self.assertNotCallable(instance)
self.assertRaises(TypeError, instance)
def test_patch_spec_instance(self):
patcher = patch('%s.X' % __name__, spec=X())
mock = patcher.start()
self.addCleanup(patcher.stop)
self.assertNotCallable(mock)
self.assertRaises(TypeError, mock)
def test_patch_spec_set_instance(self):
patcher = patch('%s.X' % __name__, spec_set=X())
mock = patcher.start()
self.addCleanup(patcher.stop)
self.assertNotCallable(mock)
self.assertRaises(TypeError, mock)
def test_patch_spec_callable_class(self):
class CallableX(X):
def __call__(self):
pass
class Sub(CallableX):
pass
class Multi(SomeClass, Sub):
pass
for arg in 'spec', 'spec_set':
for Klass in CallableX, Sub, Multi:
with patch('%s.X' % __name__, **{arg: Klass}) as mock:
instance = mock()
mock.assert_called_once_with()
self.assertTrue(is_instance(instance, MagicMock))
# inherited spec
self.assertRaises(AttributeError, getattr, instance,
'foobarbaz')
result = instance()
# instance is callable, result has no spec
instance.assert_called_once_with()
result(3, 2, 1)
result.assert_called_once_with(3, 2, 1)
result.foo(3, 2, 1)
result.foo.assert_called_once_with(3, 2, 1)
def test_create_autospec(self):
mock = create_autospec(X)
instance = mock()
self.assertRaises(TypeError, instance)
mock = create_autospec(X())
self.assertRaises(TypeError, mock)
def test_create_autospec_instance(self):
mock = create_autospec(SomeClass, instance=True)
self.assertRaises(TypeError, mock)
mock.wibble()
mock.wibble.assert_called_once_with()
self.assertRaises(TypeError, mock.wibble, 'some', 'args')
if __name__ == "__main__":
unittest.main()

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import time
import types
import unittest
from unittest.mock import (
call, _Call, create_autospec, MagicMock,
Mock, ANY, _CallList, patch, PropertyMock
)
from datetime import datetime
class SomeClass(object):
def one(self, a, b):
pass
def two(self):
pass
def three(self, a=None):
pass
class AnyTest(unittest.TestCase):
def test_any(self):
self.assertEqual(ANY, object())
mock = Mock()
mock(ANY)
mock.assert_called_with(ANY)
mock = Mock()
mock(foo=ANY)
mock.assert_called_with(foo=ANY)
def test_repr(self):
self.assertEqual(repr(ANY), '<ANY>')
self.assertEqual(str(ANY), '<ANY>')
def test_any_and_datetime(self):
mock = Mock()
mock(datetime.now(), foo=datetime.now())
mock.assert_called_with(ANY, foo=ANY)
def test_any_mock_calls_comparison_order(self):
mock = Mock()
d = datetime.now()
class Foo(object):
def __eq__(self, other):
return False
def __ne__(self, other):
return True
for d in datetime.now(), Foo():
mock.reset_mock()
mock(d, foo=d, bar=d)
mock.method(d, zinga=d, alpha=d)
mock().method(a1=d, z99=d)
expected = [
call(ANY, foo=ANY, bar=ANY),
call.method(ANY, zinga=ANY, alpha=ANY),
call(), call().method(a1=ANY, z99=ANY)
]
self.assertEqual(expected, mock.mock_calls)
self.assertEqual(mock.mock_calls, expected)
class CallTest(unittest.TestCase):
def test_call_with_call(self):
kall = _Call()
self.assertEqual(kall, _Call())
self.assertEqual(kall, _Call(('',)))
self.assertEqual(kall, _Call(((),)))
self.assertEqual(kall, _Call(({},)))
self.assertEqual(kall, _Call(('', ())))
self.assertEqual(kall, _Call(('', {})))
self.assertEqual(kall, _Call(('', (), {})))
self.assertEqual(kall, _Call(('foo',)))
self.assertEqual(kall, _Call(('bar', ())))
self.assertEqual(kall, _Call(('baz', {})))
self.assertEqual(kall, _Call(('spam', (), {})))
kall = _Call(((1, 2, 3),))
self.assertEqual(kall, _Call(((1, 2, 3),)))
self.assertEqual(kall, _Call(('', (1, 2, 3))))
self.assertEqual(kall, _Call(((1, 2, 3), {})))
self.assertEqual(kall, _Call(('', (1, 2, 3), {})))
kall = _Call(((1, 2, 4),))
self.assertNotEqual(kall, _Call(('', (1, 2, 3))))
self.assertNotEqual(kall, _Call(('', (1, 2, 3), {})))
kall = _Call(('foo', (1, 2, 4),))
self.assertNotEqual(kall, _Call(('', (1, 2, 4))))
self.assertNotEqual(kall, _Call(('', (1, 2, 4), {})))
self.assertNotEqual(kall, _Call(('bar', (1, 2, 4))))
self.assertNotEqual(kall, _Call(('bar', (1, 2, 4), {})))
kall = _Call(({'a': 3},))
self.assertEqual(kall, _Call(('', (), {'a': 3})))
self.assertEqual(kall, _Call(('', {'a': 3})))
self.assertEqual(kall, _Call(((), {'a': 3})))
self.assertEqual(kall, _Call(({'a': 3},)))
def test_empty__Call(self):
args = _Call()
self.assertEqual(args, ())
self.assertEqual(args, ('foo',))
self.assertEqual(args, ((),))
self.assertEqual(args, ('foo', ()))
self.assertEqual(args, ('foo',(), {}))
self.assertEqual(args, ('foo', {}))
self.assertEqual(args, ({},))
def test_named_empty_call(self):
args = _Call(('foo', (), {}))
self.assertEqual(args, ('foo',))
self.assertEqual(args, ('foo', ()))
self.assertEqual(args, ('foo',(), {}))
self.assertEqual(args, ('foo', {}))
self.assertNotEqual(args, ((),))
self.assertNotEqual(args, ())
self.assertNotEqual(args, ({},))
self.assertNotEqual(args, ('bar',))
self.assertNotEqual(args, ('bar', ()))
self.assertNotEqual(args, ('bar', {}))
def test_call_with_args(self):
args = _Call(((1, 2, 3), {}))
self.assertEqual(args, ((1, 2, 3),))
self.assertEqual(args, ('foo', (1, 2, 3)))
self.assertEqual(args, ('foo', (1, 2, 3), {}))
self.assertEqual(args, ((1, 2, 3), {}))
def test_named_call_with_args(self):
args = _Call(('foo', (1, 2, 3), {}))
self.assertEqual(args, ('foo', (1, 2, 3)))
self.assertEqual(args, ('foo', (1, 2, 3), {}))
self.assertNotEqual(args, ((1, 2, 3),))
self.assertNotEqual(args, ((1, 2, 3), {}))
def test_call_with_kwargs(self):
args = _Call(((), dict(a=3, b=4)))
self.assertEqual(args, (dict(a=3, b=4),))
self.assertEqual(args, ('foo', dict(a=3, b=4)))
self.assertEqual(args, ('foo', (), dict(a=3, b=4)))
self.assertEqual(args, ((), dict(a=3, b=4)))
def test_named_call_with_kwargs(self):
args = _Call(('foo', (), dict(a=3, b=4)))
self.assertEqual(args, ('foo', dict(a=3, b=4)))
self.assertEqual(args, ('foo', (), dict(a=3, b=4)))
self.assertNotEqual(args, (dict(a=3, b=4),))
self.assertNotEqual(args, ((), dict(a=3, b=4)))
def test_call_with_args_call_empty_name(self):
args = _Call(((1, 2, 3), {}))
self.assertEqual(args, call(1, 2, 3))
self.assertEqual(call(1, 2, 3), args)
self.assertIn(call(1, 2, 3), [args])
def test_call_ne(self):
self.assertNotEqual(_Call(((1, 2, 3),)), call(1, 2))
self.assertFalse(_Call(((1, 2, 3),)) != call(1, 2, 3))
self.assertTrue(_Call(((1, 2), {})) != call(1, 2, 3))
def test_call_non_tuples(self):
kall = _Call(((1, 2, 3),))
for value in 1, None, self, int:
self.assertNotEqual(kall, value)
self.assertFalse(kall == value)
def test_repr(self):
self.assertEqual(repr(_Call()), 'call()')
self.assertEqual(repr(_Call(('foo',))), 'call.foo()')
self.assertEqual(repr(_Call(((1, 2, 3), {'a': 'b'}))),
"call(1, 2, 3, a='b')")
self.assertEqual(repr(_Call(('bar', (1, 2, 3), {'a': 'b'}))),
"call.bar(1, 2, 3, a='b')")
self.assertEqual(repr(call), 'call')
self.assertEqual(str(call), 'call')
self.assertEqual(repr(call()), 'call()')
self.assertEqual(repr(call(1)), 'call(1)')
self.assertEqual(repr(call(zz='thing')), "call(zz='thing')")
self.assertEqual(repr(call().foo), 'call().foo')
self.assertEqual(repr(call(1).foo.bar(a=3).bing),
'call().foo.bar().bing')
self.assertEqual(
repr(call().foo(1, 2, a=3)),
"call().foo(1, 2, a=3)"
)
self.assertEqual(repr(call()()), "call()()")
self.assertEqual(repr(call(1)(2)), "call()(2)")
self.assertEqual(
repr(call()().bar().baz.beep(1)),
"call()().bar().baz.beep(1)"
)
def test_call(self):
self.assertEqual(call(), ('', (), {}))
self.assertEqual(call('foo', 'bar', one=3, two=4),
('', ('foo', 'bar'), {'one': 3, 'two': 4}))
mock = Mock()
mock(1, 2, 3)
mock(a=3, b=6)
self.assertEqual(mock.call_args_list,
[call(1, 2, 3), call(a=3, b=6)])
def test_attribute_call(self):
self.assertEqual(call.foo(1), ('foo', (1,), {}))
self.assertEqual(call.bar.baz(fish='eggs'),
('bar.baz', (), {'fish': 'eggs'}))
mock = Mock()
mock.foo(1, 2 ,3)
mock.bar.baz(a=3, b=6)
self.assertEqual(mock.method_calls,
[call.foo(1, 2, 3), call.bar.baz(a=3, b=6)])
def test_extended_call(self):
result = call(1).foo(2).bar(3, a=4)
self.assertEqual(result, ('().foo().bar', (3,), dict(a=4)))
mock = MagicMock()
mock(1, 2, a=3, b=4)
self.assertEqual(mock.call_args, call(1, 2, a=3, b=4))
self.assertNotEqual(mock.call_args, call(1, 2, 3))
self.assertEqual(mock.call_args_list, [call(1, 2, a=3, b=4)])
self.assertEqual(mock.mock_calls, [call(1, 2, a=3, b=4)])
mock = MagicMock()
mock.foo(1).bar()().baz.beep(a=6)
last_call = call.foo(1).bar()().baz.beep(a=6)
self.assertEqual(mock.mock_calls[-1], last_call)
self.assertEqual(mock.mock_calls, last_call.call_list())
def test_extended_not_equal(self):
a = call(x=1).foo
b = call(x=2).foo
self.assertEqual(a, a)
self.assertEqual(b, b)
self.assertNotEqual(a, b)
def test_nested_calls_not_equal(self):
a = call(x=1).foo().bar
b = call(x=2).foo().bar
self.assertEqual(a, a)
self.assertEqual(b, b)
self.assertNotEqual(a, b)
def test_call_list(self):
mock = MagicMock()
mock(1)
self.assertEqual(call(1).call_list(), mock.mock_calls)
mock = MagicMock()
mock(1).method(2)
self.assertEqual(call(1).method(2).call_list(),
mock.mock_calls)
mock = MagicMock()
mock(1).method(2)(3)
self.assertEqual(call(1).method(2)(3).call_list(),
mock.mock_calls)
mock = MagicMock()
int(mock(1).method(2)(3).foo.bar.baz(4)(5))
kall = call(1).method(2)(3).foo.bar.baz(4)(5).__int__()
self.assertEqual(kall.call_list(), mock.mock_calls)
def test_call_any(self):
self.assertEqual(call, ANY)
m = MagicMock()
int(m)
self.assertEqual(m.mock_calls, [ANY])
self.assertEqual([ANY], m.mock_calls)
def test_two_args_call(self):
args = _Call(((1, 2), {'a': 3}), two=True)
self.assertEqual(len(args), 2)
self.assertEqual(args[0], (1, 2))
self.assertEqual(args[1], {'a': 3})
other_args = _Call(((1, 2), {'a': 3}))
self.assertEqual(args, other_args)
def test_call_with_name(self):
self.assertEqual(_Call((), 'foo')[0], 'foo')
self.assertEqual(_Call((('bar', 'barz'),),)[0], '')
self.assertEqual(_Call((('bar', 'barz'), {'hello': 'world'}),)[0], '')
class SpecSignatureTest(unittest.TestCase):
def _check_someclass_mock(self, mock):
self.assertRaises(AttributeError, getattr, mock, 'foo')
mock.one(1, 2)
mock.one.assert_called_with(1, 2)
self.assertRaises(AssertionError,
mock.one.assert_called_with, 3, 4)
self.assertRaises(TypeError, mock.one, 1)
mock.two()
mock.two.assert_called_with()
self.assertRaises(AssertionError,
mock.two.assert_called_with, 3)
self.assertRaises(TypeError, mock.two, 1)
mock.three()
mock.three.assert_called_with()
self.assertRaises(AssertionError,
mock.three.assert_called_with, 3)
self.assertRaises(TypeError, mock.three, 3, 2)
mock.three(1)
mock.three.assert_called_with(1)
mock.three(a=1)
mock.three.assert_called_with(a=1)
def test_basic(self):
mock = create_autospec(SomeClass)
self._check_someclass_mock(mock)
mock = create_autospec(SomeClass())
self._check_someclass_mock(mock)
def test_create_autospec_return_value(self):
def f():
pass
mock = create_autospec(f, return_value='foo')
self.assertEqual(mock(), 'foo')
class Foo(object):
pass
mock = create_autospec(Foo, return_value='foo')
self.assertEqual(mock(), 'foo')
def test_autospec_reset_mock(self):
m = create_autospec(int)
int(m)
m.reset_mock()
self.assertEqual(m.__int__.call_count, 0)
def test_mocking_unbound_methods(self):
class Foo(object):
def foo(self, foo):
pass
p = patch.object(Foo, 'foo')
mock_foo = p.start()
Foo().foo(1)
mock_foo.assert_called_with(1)
def test_create_autospec_unbound_methods(self):
# see mock issue 128
# this is expected to fail until the issue is fixed
return
class Foo(object):
def foo(self):
pass
klass = create_autospec(Foo)
instance = klass()
self.assertRaises(TypeError, instance.foo, 1)
# Note: no type checking on the "self" parameter
klass.foo(1)
klass.foo.assert_called_with(1)
self.assertRaises(TypeError, klass.foo)
def test_create_autospec_keyword_arguments(self):
class Foo(object):
a = 3
m = create_autospec(Foo, a='3')
self.assertEqual(m.a, '3')
def test_create_autospec_keyword_only_arguments(self):
def foo(a, *, b=None):
pass
m = create_autospec(foo)
m(1)
m.assert_called_with(1)
self.assertRaises(TypeError, m, 1, 2)
m(2, b=3)
m.assert_called_with(2, b=3)
def test_function_as_instance_attribute(self):
obj = SomeClass()
def f(a):
pass
obj.f = f
mock = create_autospec(obj)
mock.f('bing')
mock.f.assert_called_with('bing')
def test_spec_as_list(self):
# because spec as a list of strings in the mock constructor means
# something very different we treat a list instance as the type.
mock = create_autospec([])
mock.append('foo')
mock.append.assert_called_with('foo')
self.assertRaises(AttributeError, getattr, mock, 'foo')
class Foo(object):
foo = []
mock = create_autospec(Foo)
mock.foo.append(3)
mock.foo.append.assert_called_with(3)
self.assertRaises(AttributeError, getattr, mock.foo, 'foo')
def test_attributes(self):
class Sub(SomeClass):
attr = SomeClass()
sub_mock = create_autospec(Sub)
for mock in (sub_mock, sub_mock.attr):
self._check_someclass_mock(mock)
def test_builtin_functions_types(self):
# we could replace builtin functions / methods with a function
# with *args / **kwargs signature. Using the builtin method type
# as a spec seems to work fairly well though.
class BuiltinSubclass(list):
def bar(self, arg):
pass
sorted = sorted
attr = {}
mock = create_autospec(BuiltinSubclass)
mock.append(3)
mock.append.assert_called_with(3)
self.assertRaises(AttributeError, getattr, mock.append, 'foo')
mock.bar('foo')
mock.bar.assert_called_with('foo')
self.assertRaises(TypeError, mock.bar, 'foo', 'bar')
self.assertRaises(AttributeError, getattr, mock.bar, 'foo')
mock.sorted([1, 2])
mock.sorted.assert_called_with([1, 2])
self.assertRaises(AttributeError, getattr, mock.sorted, 'foo')
mock.attr.pop(3)
mock.attr.pop.assert_called_with(3)
self.assertRaises(AttributeError, getattr, mock.attr, 'foo')
def test_method_calls(self):
class Sub(SomeClass):
attr = SomeClass()
mock = create_autospec(Sub)
mock.one(1, 2)
mock.two()
mock.three(3)
expected = [call.one(1, 2), call.two(), call.three(3)]
self.assertEqual(mock.method_calls, expected)
mock.attr.one(1, 2)
mock.attr.two()
mock.attr.three(3)
expected.extend(
[call.attr.one(1, 2), call.attr.two(), call.attr.three(3)]
)
self.assertEqual(mock.method_calls, expected)
def test_magic_methods(self):
class BuiltinSubclass(list):
attr = {}
mock = create_autospec(BuiltinSubclass)
self.assertEqual(list(mock), [])
self.assertRaises(TypeError, int, mock)
self.assertRaises(TypeError, int, mock.attr)
self.assertEqual(list(mock), [])
self.assertIsInstance(mock['foo'], MagicMock)
self.assertIsInstance(mock.attr['foo'], MagicMock)
def test_spec_set(self):
class Sub(SomeClass):
attr = SomeClass()
for spec in (Sub, Sub()):
mock = create_autospec(spec, spec_set=True)
self._check_someclass_mock(mock)
self.assertRaises(AttributeError, setattr, mock, 'foo', 'bar')
self.assertRaises(AttributeError, setattr, mock.attr, 'foo', 'bar')
def test_descriptors(self):
class Foo(object):
@classmethod
def f(cls, a, b):
pass
@staticmethod
def g(a, b):
pass
class Bar(Foo):
pass
class Baz(SomeClass, Bar):
pass
for spec in (Foo, Foo(), Bar, Bar(), Baz, Baz()):
mock = create_autospec(spec)
mock.f(1, 2)
mock.f.assert_called_once_with(1, 2)
mock.g(3, 4)
mock.g.assert_called_once_with(3, 4)
def test_recursive(self):
class A(object):
def a(self):
pass
foo = 'foo bar baz'
bar = foo
A.B = A
mock = create_autospec(A)
mock()
self.assertFalse(mock.B.called)
mock.a()
mock.B.a()
self.assertEqual(mock.method_calls, [call.a(), call.B.a()])
self.assertIs(A.foo, A.bar)
self.assertIsNot(mock.foo, mock.bar)
mock.foo.lower()
self.assertRaises(AssertionError, mock.bar.lower.assert_called_with)
def test_spec_inheritance_for_classes(self):
class Foo(object):
def a(self, x):
pass
class Bar(object):
def f(self, y):
pass
class_mock = create_autospec(Foo)
self.assertIsNot(class_mock, class_mock())
for this_mock in class_mock, class_mock():
this_mock.a(x=5)
this_mock.a.assert_called_with(x=5)
this_mock.a.assert_called_with(5)
self.assertRaises(TypeError, this_mock.a, 'foo', 'bar')
self.assertRaises(AttributeError, getattr, this_mock, 'b')
instance_mock = create_autospec(Foo())
instance_mock.a(5)
instance_mock.a.assert_called_with(5)
instance_mock.a.assert_called_with(x=5)
self.assertRaises(TypeError, instance_mock.a, 'foo', 'bar')
self.assertRaises(AttributeError, getattr, instance_mock, 'b')
# The return value isn't isn't callable
self.assertRaises(TypeError, instance_mock)
instance_mock.Bar.f(6)
instance_mock.Bar.f.assert_called_with(6)
instance_mock.Bar.f.assert_called_with(y=6)
self.assertRaises(AttributeError, getattr, instance_mock.Bar, 'g')
instance_mock.Bar().f(6)
instance_mock.Bar().f.assert_called_with(6)
instance_mock.Bar().f.assert_called_with(y=6)
self.assertRaises(AttributeError, getattr, instance_mock.Bar(), 'g')
def test_inherit(self):
class Foo(object):
a = 3
Foo.Foo = Foo
# class
mock = create_autospec(Foo)
instance = mock()
self.assertRaises(AttributeError, getattr, instance, 'b')
attr_instance = mock.Foo()
self.assertRaises(AttributeError, getattr, attr_instance, 'b')
# instance
mock = create_autospec(Foo())
self.assertRaises(AttributeError, getattr, mock, 'b')
self.assertRaises(TypeError, mock)
# attribute instance
call_result = mock.Foo()
self.assertRaises(AttributeError, getattr, call_result, 'b')
def test_builtins(self):
# used to fail with infinite recursion
create_autospec(1)
create_autospec(int)
create_autospec('foo')
create_autospec(str)
create_autospec({})
create_autospec(dict)
create_autospec([])
create_autospec(list)
create_autospec(set())
create_autospec(set)
create_autospec(1.0)
create_autospec(float)
create_autospec(1j)
create_autospec(complex)
create_autospec(False)
create_autospec(True)
def test_function(self):
def f(a, b):
pass
mock = create_autospec(f)
self.assertRaises(TypeError, mock)
mock(1, 2)
mock.assert_called_with(1, 2)
mock.assert_called_with(1, b=2)
mock.assert_called_with(a=1, b=2)
f.f = f
mock = create_autospec(f)
self.assertRaises(TypeError, mock.f)
mock.f(3, 4)
mock.f.assert_called_with(3, 4)
mock.f.assert_called_with(a=3, b=4)
def test_skip_attributeerrors(self):
class Raiser(object):
def __get__(self, obj, type=None):
if obj is None:
raise AttributeError('Can only be accessed via an instance')
class RaiserClass(object):
raiser = Raiser()
@staticmethod
def existing(a, b):
return a + b
s = create_autospec(RaiserClass)
self.assertRaises(TypeError, lambda x: s.existing(1, 2, 3))
s.existing(1, 2)
self.assertRaises(AttributeError, lambda: s.nonexisting)
# check we can fetch the raiser attribute and it has no spec
obj = s.raiser
obj.foo, obj.bar
def test_signature_class(self):
class Foo(object):
def __init__(self, a, b=3):
pass
mock = create_autospec(Foo)
self.assertRaises(TypeError, mock)
mock(1)
mock.assert_called_once_with(1)
mock.assert_called_once_with(a=1)
self.assertRaises(AssertionError, mock.assert_called_once_with, 2)
mock(4, 5)
mock.assert_called_with(4, 5)
mock.assert_called_with(a=4, b=5)
self.assertRaises(AssertionError, mock.assert_called_with, a=5, b=4)
def test_class_with_no_init(self):
# this used to raise an exception
# due to trying to get a signature from object.__init__
class Foo(object):
pass
create_autospec(Foo)
def test_signature_callable(self):
class Callable(object):
def __init__(self, x, y):
pass
def __call__(self, a):
pass
mock = create_autospec(Callable)
mock(1, 2)
mock.assert_called_once_with(1, 2)
mock.assert_called_once_with(x=1, y=2)
self.assertRaises(TypeError, mock, 'a')
instance = mock(1, 2)
self.assertRaises(TypeError, instance)
instance(a='a')
instance.assert_called_once_with('a')
instance.assert_called_once_with(a='a')
instance('a')
instance.assert_called_with('a')
instance.assert_called_with(a='a')
mock = create_autospec(Callable(1, 2))
mock(a='a')
mock.assert_called_once_with(a='a')
self.assertRaises(TypeError, mock)
mock('a')
mock.assert_called_with('a')
def test_signature_noncallable(self):
class NonCallable(object):
def __init__(self):
pass
mock = create_autospec(NonCallable)
instance = mock()
mock.assert_called_once_with()
self.assertRaises(TypeError, mock, 'a')
self.assertRaises(TypeError, instance)
self.assertRaises(TypeError, instance, 'a')
mock = create_autospec(NonCallable())
self.assertRaises(TypeError, mock)
self.assertRaises(TypeError, mock, 'a')
def test_create_autospec_none(self):
class Foo(object):
bar = None
mock = create_autospec(Foo)
none = mock.bar
self.assertNotIsInstance(none, type(None))
none.foo()
none.foo.assert_called_once_with()
def test_autospec_functions_with_self_in_odd_place(self):
class Foo(object):
def f(a, self):
pass
a = create_autospec(Foo)
a.f(10)
a.f.assert_called_with(10)
a.f.assert_called_with(self=10)
a.f(self=10)
a.f.assert_called_with(10)
a.f.assert_called_with(self=10)
def test_autospec_data_descriptor(self):
class Descriptor(object):
def __init__(self, value):
self.value = value
def __get__(self, obj, cls=None):
if obj is None:
return self
return self.value
def __set__(self, obj, value):
pass
class MyProperty(property):
pass
class Foo(object):
__slots__ = ['slot']
@property
def prop(self):
return 3
@MyProperty
def subprop(self):
return 4
desc = Descriptor(42)
foo = create_autospec(Foo)
def check_data_descriptor(mock_attr):
# Data descriptors don't have a spec.
self.assertIsInstance(mock_attr, MagicMock)
mock_attr(1, 2, 3)
mock_attr.abc(4, 5, 6)
mock_attr.assert_called_once_with(1, 2, 3)
mock_attr.abc.assert_called_once_with(4, 5, 6)
# property
check_data_descriptor(foo.prop)
# property subclass
check_data_descriptor(foo.subprop)
# class __slot__
check_data_descriptor(foo.slot)
# plain data descriptor
check_data_descriptor(foo.desc)
def test_autospec_on_bound_builtin_function(self):
meth = types.MethodType(time.ctime, time.time())
self.assertIsInstance(meth(), str)
mocked = create_autospec(meth)
# no signature, so no spec to check against
mocked()
mocked.assert_called_once_with()
mocked.reset_mock()
mocked(4, 5, 6)
mocked.assert_called_once_with(4, 5, 6)
class TestCallList(unittest.TestCase):
def test_args_list_contains_call_list(self):
mock = Mock()
self.assertIsInstance(mock.call_args_list, _CallList)
mock(1, 2)
mock(a=3)
mock(3, 4)
mock(b=6)
for kall in call(1, 2), call(a=3), call(3, 4), call(b=6):
self.assertIn(kall, mock.call_args_list)
calls = [call(a=3), call(3, 4)]
self.assertIn(calls, mock.call_args_list)
calls = [call(1, 2), call(a=3)]
self.assertIn(calls, mock.call_args_list)
calls = [call(3, 4), call(b=6)]
self.assertIn(calls, mock.call_args_list)
calls = [call(3, 4)]
self.assertIn(calls, mock.call_args_list)
self.assertNotIn(call('fish'), mock.call_args_list)
self.assertNotIn([call('fish')], mock.call_args_list)
def test_call_list_str(self):
mock = Mock()
mock(1, 2)
mock.foo(a=3)
mock.foo.bar().baz('fish', cat='dog')
expected = (
"[call(1, 2),\n"
" call.foo(a=3),\n"
" call.foo.bar(),\n"
" call.foo.bar().baz('fish', cat='dog')]"
)
self.assertEqual(str(mock.mock_calls), expected)
def test_propertymock(self):
p = patch('%s.SomeClass.one' % __name__, new_callable=PropertyMock)
mock = p.start()
try:
SomeClass.one
mock.assert_called_once_with()
s = SomeClass()
s.one
mock.assert_called_with()
self.assertEqual(mock.mock_calls, [call(), call()])
s.one = 3
self.assertEqual(mock.mock_calls, [call(), call(), call(3)])
finally:
p.stop()
def test_propertymock_returnvalue(self):
m = MagicMock()
p = PropertyMock()
type(m).foo = p
returned = m.foo
p.assert_called_once_with()
self.assertIsInstance(returned, MagicMock)
self.assertNotIsInstance(returned, PropertyMock)
if __name__ == '__main__':
unittest.main()

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import unittest
import sys
from unittest.mock import Mock, MagicMock, _magics
class TestMockingMagicMethods(unittest.TestCase):
def test_deleting_magic_methods(self):
mock = Mock()
self.assertFalse(hasattr(mock, '__getitem__'))
mock.__getitem__ = Mock()
self.assertTrue(hasattr(mock, '__getitem__'))
del mock.__getitem__
self.assertFalse(hasattr(mock, '__getitem__'))
def test_magicmock_del(self):
mock = MagicMock()
# before using getitem
del mock.__getitem__
self.assertRaises(TypeError, lambda: mock['foo'])
mock = MagicMock()
# this time use it first
mock['foo']
del mock.__getitem__
self.assertRaises(TypeError, lambda: mock['foo'])
def test_magic_method_wrapping(self):
mock = Mock()
def f(self, name):
return self, 'fish'
mock.__getitem__ = f
self.assertIsNot(mock.__getitem__, f)
self.assertEqual(mock['foo'], (mock, 'fish'))
self.assertEqual(mock.__getitem__('foo'), (mock, 'fish'))
mock.__getitem__ = mock
self.assertIs(mock.__getitem__, mock)
def test_magic_methods_isolated_between_mocks(self):
mock1 = Mock()
mock2 = Mock()
mock1.__iter__ = Mock(return_value=iter([]))
self.assertEqual(list(mock1), [])
self.assertRaises(TypeError, lambda: list(mock2))
def test_repr(self):
mock = Mock()
self.assertEqual(repr(mock), "<Mock id='%s'>" % id(mock))
mock.__repr__ = lambda s: 'foo'
self.assertEqual(repr(mock), 'foo')
def test_str(self):
mock = Mock()
self.assertEqual(str(mock), object.__str__(mock))
mock.__str__ = lambda s: 'foo'
self.assertEqual(str(mock), 'foo')
def test_dict_methods(self):
mock = Mock()
self.assertRaises(TypeError, lambda: mock['foo'])
def _del():
del mock['foo']
def _set():
mock['foo'] = 3
self.assertRaises(TypeError, _del)
self.assertRaises(TypeError, _set)
_dict = {}
def getitem(s, name):
return _dict[name]
def setitem(s, name, value):
_dict[name] = value
def delitem(s, name):
del _dict[name]
mock.__setitem__ = setitem
mock.__getitem__ = getitem
mock.__delitem__ = delitem
self.assertRaises(KeyError, lambda: mock['foo'])
mock['foo'] = 'bar'
self.assertEqual(_dict, {'foo': 'bar'})
self.assertEqual(mock['foo'], 'bar')
del mock['foo']
self.assertEqual(_dict, {})
def test_numeric(self):
original = mock = Mock()
mock.value = 0
self.assertRaises(TypeError, lambda: mock + 3)
def add(self, other):
mock.value += other
return self
mock.__add__ = add
self.assertEqual(mock + 3, mock)
self.assertEqual(mock.value, 3)
del mock.__add__
def iadd(mock):
mock += 3
self.assertRaises(TypeError, iadd, mock)
mock.__iadd__ = add
mock += 6
self.assertEqual(mock, original)
self.assertEqual(mock.value, 9)
self.assertRaises(TypeError, lambda: 3 + mock)
mock.__radd__ = add
self.assertEqual(7 + mock, mock)
self.assertEqual(mock.value, 16)
def test_division(self):
original = mock = Mock()
mock.value = 32
self.assertRaises(TypeError, lambda: mock / 2)
def truediv(self, other):
mock.value /= other
return self
mock.__truediv__ = truediv
self.assertEqual(mock / 2, mock)
self.assertEqual(mock.value, 16)
del mock.__truediv__
def itruediv(mock):
mock /= 4
self.assertRaises(TypeError, itruediv, mock)
mock.__itruediv__ = truediv
mock /= 8
self.assertEqual(mock, original)
self.assertEqual(mock.value, 2)
self.assertRaises(TypeError, lambda: 8 / mock)
mock.__rtruediv__ = truediv
self.assertEqual(0.5 / mock, mock)
self.assertEqual(mock.value, 4)
def test_hash(self):
mock = Mock()
# test delegation
self.assertEqual(hash(mock), Mock.__hash__(mock))
def _hash(s):
return 3
mock.__hash__ = _hash
self.assertEqual(hash(mock), 3)
def test_nonzero(self):
m = Mock()
self.assertTrue(bool(m))
m.__bool__ = lambda s: False
self.assertFalse(bool(m))
def test_comparison(self):
mock = Mock()
def comp(s, o):
return True
mock.__lt__ = mock.__gt__ = mock.__le__ = mock.__ge__ = comp
self. assertTrue(mock < 3)
self. assertTrue(mock > 3)
self. assertTrue(mock <= 3)
self. assertTrue(mock >= 3)
self.assertRaises(TypeError, lambda: MagicMock() < object())
self.assertRaises(TypeError, lambda: object() < MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() < MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() > object())
self.assertRaises(TypeError, lambda: object() > MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() > MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() <= object())
self.assertRaises(TypeError, lambda: object() <= MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() <= MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() >= object())
self.assertRaises(TypeError, lambda: object() >= MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() >= MagicMock())
def test_equality(self):
for mock in Mock(), MagicMock():
self.assertEqual(mock == mock, True)
self.assertIsInstance(mock == mock, bool)
self.assertEqual(mock != mock, False)
self.assertIsInstance(mock != mock, bool)
self.assertEqual(mock == object(), False)
self.assertEqual(mock != object(), True)
def eq(self, other):
return other == 3
mock.__eq__ = eq
self.assertTrue(mock == 3)
self.assertFalse(mock == 4)
def ne(self, other):
return other == 3
mock.__ne__ = ne
self.assertTrue(mock != 3)
self.assertFalse(mock != 4)
mock = MagicMock()
mock.__eq__.return_value = True
self.assertIsInstance(mock == 3, bool)
self.assertEqual(mock == 3, True)
mock.__ne__.return_value = False
self.assertIsInstance(mock != 3, bool)
self.assertEqual(mock != 3, False)
def test_len_contains_iter(self):
mock = Mock()
self.assertRaises(TypeError, len, mock)
self.assertRaises(TypeError, iter, mock)
self.assertRaises(TypeError, lambda: 'foo' in mock)
mock.__len__ = lambda s: 6
self.assertEqual(len(mock), 6)
mock.__contains__ = lambda s, o: o == 3
self.assertIn(3, mock)
self.assertNotIn(6, mock)
mock.__iter__ = lambda s: iter('foobarbaz')
self.assertEqual(list(mock), list('foobarbaz'))
def test_magicmock(self):
mock = MagicMock()
mock.__iter__.return_value = iter([1, 2, 3])
self.assertEqual(list(mock), [1, 2, 3])
getattr(mock, '__bool__').return_value = False
self.assertFalse(hasattr(mock, '__nonzero__'))
self.assertFalse(bool(mock))
for entry in _magics:
self.assertTrue(hasattr(mock, entry))
self.assertFalse(hasattr(mock, '__imaginery__'))
def test_magic_mock_equality(self):
mock = MagicMock()
self.assertIsInstance(mock == object(), bool)
self.assertIsInstance(mock != object(), bool)
self.assertEqual(mock == object(), False)
self.assertEqual(mock != object(), True)
self.assertEqual(mock == mock, True)
self.assertEqual(mock != mock, False)
def test_magicmock_defaults(self):
mock = MagicMock()
self.assertEqual(int(mock), 1)
self.assertEqual(complex(mock), 1j)
self.assertEqual(float(mock), 1.0)
self.assertNotIn(object(), mock)
self.assertEqual(len(mock), 0)
self.assertEqual(list(mock), [])
self.assertEqual(hash(mock), object.__hash__(mock))
self.assertEqual(str(mock), object.__str__(mock))
self.assertTrue(bool(mock))
# in Python 3 oct and hex use __index__
# so these tests are for __index__ in py3k
self.assertEqual(oct(mock), '0o1')
self.assertEqual(hex(mock), '0x1')
# how to test __sizeof__ ?
def test_magic_methods_and_spec(self):
class Iterable(object):
def __iter__(self):
pass
mock = Mock(spec=Iterable)
self.assertRaises(AttributeError, lambda: mock.__iter__)
mock.__iter__ = Mock(return_value=iter([]))
self.assertEqual(list(mock), [])
class NonIterable(object):
pass
mock = Mock(spec=NonIterable)
self.assertRaises(AttributeError, lambda: mock.__iter__)
def set_int():
mock.__int__ = Mock(return_value=iter([]))
self.assertRaises(AttributeError, set_int)
mock = MagicMock(spec=Iterable)
self.assertEqual(list(mock), [])
self.assertRaises(AttributeError, set_int)
def test_magic_methods_and_spec_set(self):
class Iterable(object):
def __iter__(self):
pass
mock = Mock(spec_set=Iterable)
self.assertRaises(AttributeError, lambda: mock.__iter__)
mock.__iter__ = Mock(return_value=iter([]))
self.assertEqual(list(mock), [])
class NonIterable(object):
pass
mock = Mock(spec_set=NonIterable)
self.assertRaises(AttributeError, lambda: mock.__iter__)
def set_int():
mock.__int__ = Mock(return_value=iter([]))
self.assertRaises(AttributeError, set_int)
mock = MagicMock(spec_set=Iterable)
self.assertEqual(list(mock), [])
self.assertRaises(AttributeError, set_int)
def test_setting_unsupported_magic_method(self):
mock = MagicMock()
def set_setattr():
mock.__setattr__ = lambda self, name: None
self.assertRaisesRegex(AttributeError,
"Attempting to set unsupported magic method '__setattr__'.",
set_setattr
)
def test_attributes_and_return_value(self):
mock = MagicMock()
attr = mock.foo
def _get_type(obj):
# the type of every mock (or magicmock) is a custom subclass
# so the real type is the second in the mro
return type(obj).__mro__[1]
self.assertEqual(_get_type(attr), MagicMock)
returned = mock()
self.assertEqual(_get_type(returned), MagicMock)
def test_magic_methods_are_magic_mocks(self):
mock = MagicMock()
self.assertIsInstance(mock.__getitem__, MagicMock)
mock[1][2].__getitem__.return_value = 3
self.assertEqual(mock[1][2][3], 3)
def test_magic_method_reset_mock(self):
mock = MagicMock()
str(mock)
self.assertTrue(mock.__str__.called)
mock.reset_mock()
self.assertFalse(mock.__str__.called)
def test_dir(self):
# overriding the default implementation
for mock in Mock(), MagicMock():
def _dir(self):
return ['foo']
mock.__dir__ = _dir
self.assertEqual(dir(mock), ['foo'])
@unittest.skipIf('PyPy' in sys.version, "This fails differently on pypy")
def test_bound_methods(self):
m = Mock()
# XXXX should this be an expected failure instead?
# this seems like it should work, but is hard to do without introducing
# other api inconsistencies. Failure message could be better though.
m.__iter__ = [3].__iter__
self.assertRaises(TypeError, iter, m)
def test_magic_method_type(self):
class Foo(MagicMock):
pass
foo = Foo()
self.assertIsInstance(foo.__int__, Foo)
def test_descriptor_from_class(self):
m = MagicMock()
type(m).__str__.return_value = 'foo'
self.assertEqual(str(m), 'foo')
def test_iterable_as_iter_return_value(self):
m = MagicMock()
m.__iter__.return_value = [1, 2, 3]
self.assertEqual(list(m), [1, 2, 3])
self.assertEqual(list(m), [1, 2, 3])
m.__iter__.return_value = iter([4, 5, 6])
self.assertEqual(list(m), [4, 5, 6])
self.assertEqual(list(m), [])
def test_matmul(self):
m = MagicMock()
self.assertIsInstance(m @ 1, MagicMock)
m.__matmul__.return_value = 42
m.__rmatmul__.return_value = 666
m.__imatmul__.return_value = 24
self.assertEqual(m @ 1, 42)
self.assertEqual(1 @ m, 666)
m @= 24
self.assertEqual(m, 24)
def test_divmod_and_rdivmod(self):
m = MagicMock()
self.assertIsInstance(divmod(5, m), MagicMock)
m.__divmod__.return_value = (2, 1)
self.assertEqual(divmod(m, 2), (2, 1))
m = MagicMock()
foo = divmod(2, m)
self.assertIsInstance(foo, MagicMock)
foo_direct = m.__divmod__(2)
self.assertIsInstance(foo_direct, MagicMock)
bar = divmod(m, 2)
self.assertIsInstance(bar, MagicMock)
bar_direct = m.__rdivmod__(2)
self.assertIsInstance(bar_direct, MagicMock)
# http://bugs.python.org/issue23310
# Check if you can change behaviour of magic methods in MagicMock init
def test_magic_in_initialization(self):
m = MagicMock(**{'__str__.return_value': "12"})
self.assertEqual(str(m), "12")
def test_changing_magic_set_in_initialization(self):
m = MagicMock(**{'__str__.return_value': "12"})
m.__str__.return_value = "13"
self.assertEqual(str(m), "13")
m = MagicMock(**{'__str__.return_value': "12"})
m.configure_mock(**{'__str__.return_value': "14"})
self.assertEqual(str(m), "14")
if __name__ == '__main__':
unittest.main()

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import unittest
from unittest.mock import sentinel, DEFAULT
class SentinelTest(unittest.TestCase):
def testSentinels(self):
self.assertEqual(sentinel.whatever, sentinel.whatever,
'sentinel not stored')
self.assertNotEqual(sentinel.whatever, sentinel.whateverelse,
'sentinel should be unique')
def testSentinelName(self):
self.assertEqual(str(sentinel.whatever), 'sentinel.whatever',
'sentinel name incorrect')
def testDEFAULT(self):
self.assertIs(DEFAULT, sentinel.DEFAULT)
def testBases(self):
# If this doesn't raise an AttributeError then help(mock) is broken
self.assertRaises(AttributeError, lambda: sentinel.__bases__)
if __name__ == '__main__':
unittest.main()

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import unittest
from warnings import catch_warnings
from unittest.test.testmock.support import is_instance
from unittest.mock import MagicMock, Mock, patch, sentinel, mock_open, call
something = sentinel.Something
something_else = sentinel.SomethingElse
class WithTest(unittest.TestCase):
def test_with_statement(self):
with patch('%s.something' % __name__, sentinel.Something2):
self.assertEqual(something, sentinel.Something2, "unpatched")
self.assertEqual(something, sentinel.Something)
def test_with_statement_exception(self):
try:
with patch('%s.something' % __name__, sentinel.Something2):
self.assertEqual(something, sentinel.Something2, "unpatched")
raise Exception('pow')
except Exception:
pass
else:
self.fail("patch swallowed exception")
self.assertEqual(something, sentinel.Something)
def test_with_statement_as(self):
with patch('%s.something' % __name__) as mock_something:
self.assertEqual(something, mock_something, "unpatched")
self.assertTrue(is_instance(mock_something, MagicMock),
"patching wrong type")
self.assertEqual(something, sentinel.Something)
def test_patch_object_with_statement(self):
class Foo(object):
something = 'foo'
original = Foo.something
with patch.object(Foo, 'something'):
self.assertNotEqual(Foo.something, original, "unpatched")
self.assertEqual(Foo.something, original)
def test_with_statement_nested(self):
with catch_warnings(record=True):
with patch('%s.something' % __name__) as mock_something, patch('%s.something_else' % __name__) as mock_something_else:
self.assertEqual(something, mock_something, "unpatched")
self.assertEqual(something_else, mock_something_else,
"unpatched")
self.assertEqual(something, sentinel.Something)
self.assertEqual(something_else, sentinel.SomethingElse)
def test_with_statement_specified(self):
with patch('%s.something' % __name__, sentinel.Patched) as mock_something:
self.assertEqual(something, mock_something, "unpatched")
self.assertEqual(mock_something, sentinel.Patched, "wrong patch")
self.assertEqual(something, sentinel.Something)
def testContextManagerMocking(self):
mock = Mock()
mock.__enter__ = Mock()
mock.__exit__ = Mock()
mock.__exit__.return_value = False
with mock as m:
self.assertEqual(m, mock.__enter__.return_value)
mock.__enter__.assert_called_with()
mock.__exit__.assert_called_with(None, None, None)
def test_context_manager_with_magic_mock(self):
mock = MagicMock()
with self.assertRaises(TypeError):
with mock:
'foo' + 3
mock.__enter__.assert_called_with()
self.assertTrue(mock.__exit__.called)
def test_with_statement_same_attribute(self):
with patch('%s.something' % __name__, sentinel.Patched) as mock_something:
self.assertEqual(something, mock_something, "unpatched")
with patch('%s.something' % __name__) as mock_again:
self.assertEqual(something, mock_again, "unpatched")
self.assertEqual(something, mock_something,
"restored with wrong instance")
self.assertEqual(something, sentinel.Something, "not restored")
def test_with_statement_imbricated(self):
with patch('%s.something' % __name__) as mock_something:
self.assertEqual(something, mock_something, "unpatched")
with patch('%s.something_else' % __name__) as mock_something_else:
self.assertEqual(something_else, mock_something_else,
"unpatched")
self.assertEqual(something, sentinel.Something)
self.assertEqual(something_else, sentinel.SomethingElse)
def test_dict_context_manager(self):
foo = {}
with patch.dict(foo, {'a': 'b'}):
self.assertEqual(foo, {'a': 'b'})
self.assertEqual(foo, {})
with self.assertRaises(NameError):
with patch.dict(foo, {'a': 'b'}):
self.assertEqual(foo, {'a': 'b'})
raise NameError('Konrad')
self.assertEqual(foo, {})
class TestMockOpen(unittest.TestCase):
def test_mock_open(self):
mock = mock_open()
with patch('%s.open' % __name__, mock, create=True) as patched:
self.assertIs(patched, mock)
open('foo')
mock.assert_called_once_with('foo')
def test_mock_open_context_manager(self):
mock = mock_open()
handle = mock.return_value
with patch('%s.open' % __name__, mock, create=True):
with open('foo') as f:
f.read()
expected_calls = [call('foo'), call().__enter__(), call().read(),
call().__exit__(None, None, None)]
self.assertEqual(mock.mock_calls, expected_calls)
self.assertIs(f, handle)
def test_mock_open_context_manager_multiple_times(self):
mock = mock_open()
with patch('%s.open' % __name__, mock, create=True):
with open('foo') as f:
f.read()
with open('bar') as f:
f.read()
expected_calls = [
call('foo'), call().__enter__(), call().read(),
call().__exit__(None, None, None),
call('bar'), call().__enter__(), call().read(),
call().__exit__(None, None, None)]
self.assertEqual(mock.mock_calls, expected_calls)
def test_explicit_mock(self):
mock = MagicMock()
mock_open(mock)
with patch('%s.open' % __name__, mock, create=True) as patched:
self.assertIs(patched, mock)
open('foo')
mock.assert_called_once_with('foo')
def test_read_data(self):
mock = mock_open(read_data='foo')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
result = h.read()
self.assertEqual(result, 'foo')
def test_readline_data(self):
# Check that readline will return all the lines from the fake file
mock = mock_open(read_data='foo\nbar\nbaz\n')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
line1 = h.readline()
line2 = h.readline()
line3 = h.readline()
self.assertEqual(line1, 'foo\n')
self.assertEqual(line2, 'bar\n')
self.assertEqual(line3, 'baz\n')
# Check that we properly emulate a file that doesn't end in a newline
mock = mock_open(read_data='foo')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
result = h.readline()
self.assertEqual(result, 'foo')
def test_readlines_data(self):
# Test that emulating a file that ends in a newline character works
mock = mock_open(read_data='foo\nbar\nbaz\n')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
result = h.readlines()
self.assertEqual(result, ['foo\n', 'bar\n', 'baz\n'])
# Test that files without a final newline will also be correctly
# emulated
mock = mock_open(read_data='foo\nbar\nbaz')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
result = h.readlines()
self.assertEqual(result, ['foo\n', 'bar\n', 'baz'])
def test_read_bytes(self):
mock = mock_open(read_data=b'\xc6')
with patch('%s.open' % __name__, mock, create=True):
with open('abc', 'rb') as f:
result = f.read()
self.assertEqual(result, b'\xc6')
def test_readline_bytes(self):
m = mock_open(read_data=b'abc\ndef\nghi\n')
with patch('%s.open' % __name__, m, create=True):
with open('abc', 'rb') as f:
line1 = f.readline()
line2 = f.readline()
line3 = f.readline()
self.assertEqual(line1, b'abc\n')
self.assertEqual(line2, b'def\n')
self.assertEqual(line3, b'ghi\n')
def test_readlines_bytes(self):
m = mock_open(read_data=b'abc\ndef\nghi\n')
with patch('%s.open' % __name__, m, create=True):
with open('abc', 'rb') as f:
result = f.readlines()
self.assertEqual(result, [b'abc\n', b'def\n', b'ghi\n'])
def test_mock_open_read_with_argument(self):
# At one point calling read with an argument was broken
# for mocks returned by mock_open
some_data = 'foo\nbar\nbaz'
mock = mock_open(read_data=some_data)
self.assertEqual(mock().read(10), some_data)
def test_interleaved_reads(self):
# Test that calling read, readline, and readlines pulls data
# sequentially from the data we preload with
mock = mock_open(read_data='foo\nbar\nbaz\n')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
line1 = h.readline()
rest = h.readlines()
self.assertEqual(line1, 'foo\n')
self.assertEqual(rest, ['bar\n', 'baz\n'])
mock = mock_open(read_data='foo\nbar\nbaz\n')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
line1 = h.readline()
rest = h.read()
self.assertEqual(line1, 'foo\n')
self.assertEqual(rest, 'bar\nbaz\n')
def test_overriding_return_values(self):
mock = mock_open(read_data='foo')
handle = mock()
handle.read.return_value = 'bar'
handle.readline.return_value = 'bar'
handle.readlines.return_value = ['bar']
self.assertEqual(handle.read(), 'bar')
self.assertEqual(handle.readline(), 'bar')
self.assertEqual(handle.readlines(), ['bar'])
# call repeatedly to check that a StopIteration is not propagated
self.assertEqual(handle.readline(), 'bar')
self.assertEqual(handle.readline(), 'bar')
if __name__ == '__main__':
unittest.main()