pytest doesn't run any test

Question

pytest doesn’t run any tests and it is not clear why. I tried to use –debug but didn’t get any valuable information. It is completely not clear how to debug this sort of issues with pytest. (Looks like some issue with pytest configuration / env variables / test names patterns?)

Example of test file:

import pytest


@pytest.mark.sanity
def test_me():
    """I'm a test."""

    assert True

But pytest doesn’t run any test, why?

$ pytest
================================================== test session starts ===================================================
platform linux2 -- Python 2.7.12, pytest-3.1.3, py-1.4.34, pluggy-0.4.0
rootdir: /home/qawizard/pytest-hell, inifile:
plugins: xdist-1.15.0, timeout-1.2.0
collected 1 item s

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Exit: Done! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
============================================== no tests ran in 0.13 seconds ==============================================

Asked By: Timur Nurlygayanov

||

Source

Answer 1

To determine why tests are not running, these steps are useful:

Verify that all files with test cases start with ‘test_’ word.
Verify that all test cases names also start with ‘test_’ word.
Verify that you have created pytest.ini file in the root directory.
Verify that you have __init__.py file in all directories/sub-directories of the project.

Answered By: Timur Nurlygayanov

Answer 2

You need all tests to start with test_ but also you need to tell Pytest exact which files to look for:

# pytest.ini

[pytest]

DJANGO_SETTIONS_MODULE = myproject.settings
python_files = tests.py test_*.py

Answered By: leportella

Answer 3

For me my class name didn’t start with test.

my code was

class MainTest:
    ...

    def test_properties(self):
        ...

This wont work because pytest will assume this class shouldn’t be included.
Changing to this did it for me.

class TestMain:
    ...

    def test_properties(self):
        ...

Answered By: Piakkaa

pytest doesn't run any test

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