An automagic `patch` fixture that can patch objects directly or by name.
Project description
Pytest Patch
An automagic replacement for monkeypatch
or unittest.mock.patch
that can be
used on objects either directly or by name.
Usage
patching objects directly
from pytest import fixture
from mock import MagicMock, sentinel
from mymodule import callee, caller # `caller` returns `callee()`
@fixture
def callee_mock(patch):
# returns the second argument if provided, `MagicMock()` otherwise
return patch(callee, MagicMock(return_value=sentinel.callee))
def test_caller(callee_mock):
assert caller() == sentinel.callee
patching objects by name
@fixture
def callee_mock(patch):
return patch('callee') # assumes `callee` is in `mymodule`
patching by full path
This behavior is similar to unittest.mock.patch
.
@fixture
def callee_mock(patch):
return patch('mymodule.callee')
Configuration
By default, pytest-patch
assumes the following repository structure:
mymodule/
.git/
...
mymodule/
wat/
ermelon.py
...
tests/
*/ # e.g. unit/
mymodule/
wat/
test_ermelon.py
...
No configuration is needed if your repository matches this structure where the repository name is the same as the name of the module and your tests are in their corresponding subdirectories mirroring your module's path structure.
If the above is not the case, e.g. you have a repository with a nonmatching
module name or a monorepo with multiple modules, you may specify the
corresponding flags either in the pytest
command line or the ini file,
glob-style:
pytest --module-names=mymodule,othermodule --test-paths=tests.unit,tests.e2e.*
or (in pytest.ini
)
[pytest]
module_names = mymodule othermodule
test_paths = tests.unit tests.e2e.*
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