How to run just one test with pytest.
After you make your first test, you’ll make hundreds more. But to run them all takes a lot of time. So if you’re working in one corner of the code, just run the tests that you care about.
Run a single file
To run a single test file, such as pie_test.py, run:
Run related files
If you want to run all the tests related to pie, such as
pie_model_test.py at the same time, run the same command with the substring:
You can put multiple paths on that command, space-delimited.
Run a single test in the file
What if you have many different tests in the
pie_test.py file, such as:
def test_one(): # ... def test_two(): # ... def test_three(): # ...
And you only want to run
test_two, you can use the
-k parameter to match on function name substring:
pytest path/to/pie_test.py -k two
Now you can narrow down and run only the test you want to. Next, watch the source and re-run the test on change.