pytest-cov package is required if you want to pass –cov arguments to pytest, by default it should not be passed though. Are you using a modified version of py.test? pip install pytest-cov would fix your issue.
Another alternative is to use the pytest-env plugin. It can be configured like so: [pytest] env = HOME=~/tmp D:RUN_ENV=test the D: prefix allows setting a default value, and not override existing variables passed to py.test. Note: you can explicitly run pytest with a custom config, if you only sometimes need to run a specialized environment … Read more
The error is raised because pytest captures output by default. You can run pytest with -s option (turn off capture output). For example: py.test -s my_test.py and then in my_test.py: import ipdb; ipdb.set_trace()
I think the better way is to mock the property as PropertyMock, rather than to mock the __get__ method directly. It is stated in the documentation, search for unittest.mock.PropertyMock: A mock intended to be used as a property, or other descriptor, on a class. PropertyMock provides __get__ and __set__ methods so you can specify a … Read more
py.test –ignore=somedir worked for me In pytest.ini: [pytest] addopts = –ignore=somedir –ignore=someotherdir
py.test fixtures are a technically adequate method to achieve your purpose. You just need to define a fixture like that: @pytest.fixture(autouse=True) def run_around_tests(): # Code that will run before your test, for example: files_before = # … do something to check the existing files # A test function will be run at this point yield … Read more
A test will fail if it raises any kind of unexpected Exception. You can just invoke foo(7) and you will have tested that no MyError is raised. So, following will suffice: def test_foo3(): foo(7) If you want to be explicit and write an assert statement for this, you can do: def test_foo3(): try: foo(7) except … Read more
simply run pytest with the path to the file something like pytest tests/test_file.py Use the :: syntax to run a specific test in the test file: pytest test_mod.py::test_func Here test_func can be a test method or a class (e.g.: pytest test_mod.py::TestClass). For more ways and details, see “Specifying which tests to run” in the docs.
From pytest –help: –disable-pytest-warnings disable warnings summary, overrides -r w flag
Pytest has the skip and skipif decorators, similar to the Python unittest module (which uses skip and skipIf), which can be found in the documentation here. Examples from the link can be found here: @pytest.mark.skip(reason=”no way of currently testing this”) def test_the_unknown(): … import sys @pytest.mark.skipif(sys.version_info < (3,3), reason=”requires python3.3″) def test_function(): … The first … Read more