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mock v4.0.0.b1 Release Notes

Release Date: 2020-01-29 // about 4 years ago
    • 🚀 The release is a fresh cut of cpython's 4a686504__. All changes to :mod:mock from that commit and before are included in this release along with the subsequent changes listed below.

    __ https://github.com/python/cpython/commit/4a686504eb2bbf69adf78077458508a7ba131667

    • ✅ Issue #37972: Subscripts to the unittest.mock.call objects now receive the same chaining mechanism as any other custom attributes, so that the following usage no longer raises a TypeError:

    call().foo().getitem('bar')

    Patch by blhsing

    • ✅ Issue #38839: Fix some unused functions in tests. Patch by Adam Johnson.

    • ✅ Issue #39485: Fix a bug in :func:unittest.mock.create_autospec that would complain about the wrong number of arguments for custom descriptors defined in an extension module returning functions.

    • Issue #39082: Allow AsyncMock to correctly patch static/class methods

    • 🛠 Issue #38093: Fixes AsyncMock so it doesn't crash when used with AsyncContextManagers or AsyncIterators.

    • Issue #38859: AsyncMock now returns StopAsyncIteration on the exaustion of a side_effects iterable. Since PEP-479 its Impossible to raise a StopIteration exception from a coroutine.

    • 🔀 Issue #38163: Child mocks will now detect their type as either synchronous or asynchronous, asynchronous child mocks will be AsyncMocks and synchronous child mocks will be either MagicMock or Mock (depending on their parent type).

    • 🤡 Issue #38473: Use signature from inner mock for autospecced methods attached with :func:unittest.mock.attach_mock. Patch by Karthikeyan Singaravelan.

    • Issue #38136: Changes AsyncMock call count and await count to be two different counters. Now await count only counts when a coroutine has been awaited, not when it has been called, and vice-versa. Update the documentation around this.

    • Issue #37555: Fix NonCallableMock._call_matcher returning tuple instead of _Call object when self._spec_signature exists. Patch by Elizabeth Uselton

    • Issue #37251: Remove __code__ check in AsyncMock that incorrectly evaluated function specs as async objects but failed to evaluate classes with __await__ but no __code__ attribute defined as async objects.

    • Issue #38669: Raise :exc:TypeError when passing target as a string with :meth:unittest.mock.patch.object.

    • Issue #25597: Ensure, if wraps is supplied to :class:unittest.mock.MagicMock, it is used to calculate return values for the magic methods instead of using the default return values. Patch by Karthikeyan Singaravelan.

    • 🔀 Issue #38108: Any synchronous magic methods on an AsyncMock now return a MagicMock. Any asynchronous magic methods on a MagicMock now return an AsyncMock.

    • Issue #21478: Record calls to parent when autospecced object is attached to a mock using :func:unittest.mock.attach_mock. Patch by Karthikeyan Singaravelan.

    • Issue #38857: AsyncMock fix for return values that are awaitable types. This also covers side_effect iterable values that happend to be awaitable, and wraps callables that return an awaitable type. Before these awaitables were being awaited instead of being returned as is.

    • 🤡 Issue #38932: Mock fully resets child objects on reset_mock(). Patch by Vegard Stikbakke

    • Issue #37685: Fixed __eq__, __lt__ etc implementations in some classes. They now return :data:NotImplemented for unsupported type of the other operand. This allows the other operand to play role (for example the equality comparison with :data:~unittest.mock.ANY will return True).

    • ✅ Issue #37212: :func:unittest.mock.call now preserves the order of keyword arguments in repr output. Patch by Karthikeyan Singaravelan.

    • 🤡 Issue #37828: Fix default mock name in :meth:unittest.mock.Mock.assert_called exceptions. Patch by Abraham Toriz Cruz.

    • Issue #36871: Improve error handling for the assert_has_calls and assert_has_awaits methods of mocks. Fixed a bug where any errors encountered while binding the expected calls to the mock's spec were silently swallowed, leading to misleading error output.

    • 🤡 Issue #21600: Fix :func:mock.patch.stopall to stop active patches that were created with :func:mock.patch.dict.

    • 🚚 Issue #38161: Removes _AwaitEvent from AsyncMock.

    • Issue #36871: Ensure method signature is used instead of constructor signature of a class while asserting mock object against method calls. Patch by Karthikeyan Singaravelan.