Rewrite Tests as Pytest Tests

[pederhan]

This pull request rewrites all unittest.TestCase tests as pytest tests and uses pytest as the test runner in CI.

Changes

• All unittest.TestCase-based tests have been rewritten as standalone test_* functions (pytest style).
• GitHub Actions workflow now runs the tests with pytest instead of unittest.
• tests/fixtures.py renamed to tests/conftest.py so it is automatically imported by pytest.
  • As a part of this, fixtures are now proper pytest fixtures.
  • Fixtures are currently set to be function-scoped, which allows for modification of their return values without affecting other tests.

Reason

The existing tests already use pytest functionality such as pytest.raises. Furthermore, the other Zabbix project, zabbix-cli, already runs its tests via pytest instead of unittest. Since pytest is already used to some degree in this project, it would probably be beneficial to more fully embrace pytest-style testing.

Using pytest with pytest-style tests allows tests to use useful features such as parametrization and fixtures going forward (see pytest documentation for more information).

Going Forward

This is a pretty big change, and I understand if it's not something you want to prioritize right now. 👍

[mbakke]

By the way, is your GPG public key available somewhere?

[pederhan]

By the way, is your GPG public key available somewhere?

I've made it available on https://keys.openpgp.org/. If there is another place you would rather have it hosted, let me know.

[mbakke]

By the way, is your GPG public key available somewhere?

I've made it available on https://keys.openpgp.org/. If there is another place you would rather have it hosted, let me know.

Thanks, found it! I forgot that I could check https://github.com/pederhan.gpg , which has the same key :)