How do I configure PyCharm to run py.test tests?

Please go to File| Settings | Tools | Python Integrated Tools and change the default test runner to py.test. Then you'll get the py.test option to create tests instead of the unittest one.

PyCharm 2017.3

1. Preference -> Tools -> Python integrated Tools - Choose py.test as Default test runner.
2. If you use Django Preference -> Languages&Frameworks -> Django - Set tick on Do not use Django Test runner
3. Clear all previously existing test configurations from Run/Debug configuration, otherwise tests will be run with those older configurations.
4. To set some default additional arguments update py.test default configuration. Run/Debug Configuration -> Defaults -> Python tests -> py.test -> Additional Arguments

I think you need to use the Run/Debug Configuration item on the toolbar. Click it and 'Edit Configurations' (or alternatively use the menu item Run->Edit Configurations). In the 'Defaults' section in the left pane there is a 'py.test' item which I think is what you want.

I also found that the manual didn't match up to the UI for this. Hope I've understood the problem correctly and that helps.

Here is how I made it work with pytest 3.7.2 (installed via pip) and pycharms 2017.3:

1. Go to edit configurations

2. Add a new run config and select py.test

3. In the run config details, you need to set target=python and the unnamed field below to tests. It looks like this is the name of your test folder. Not too sure tough. I also recommend the -s argument so that if you debug your tests, the console will behave properly. Without the argument pytest captures the output and makes the debug console buggy.

4. My tests folder looks like that. This is just below the root of my project (my_project/tests).

5. My foobar_test.py file: (no imports needed):

def test_foobar():
    print("hello pytest")
    assert True

6. Run it with the normal run command