lalib/tests/test_top_level_imports.py
Alexander Hess 7e3e67c300
Add smoke tests
- extend `pytest` with an option to run only the minimum number
  of (unit) test cases to just keep the coverage at 100%
- rationale:
  + many of the unit test cases partly overlap with
    respect to the lines of source code executed
  + also, integration tests, by definition, do not
    contribute to a higher test coverage
- implementation: mark "redundant" test cases as one of:
  + `pytest.mark.integration_test`
    => code usage from the perspective of the end user
  + `pytest.mark.overlapping_test`
    => tests not contributing to the 100% coverage
  + `pytest.mark.sanity_test`
    => tests providing confidence in the test data
- add `tests.conftest` module
  => programatically convert the above markers into
     `@pytest.mark.no_cover` and collect the non-"redundant" tests
- add nox session "test-fast" to run only the minimum
  number of (unit) test while holding coverage at 100%
- refactor some test modules
  + wrap some test cases in a class
  + move sanity tests to the end of the files
2024-10-15 01:49:32 +02:00

31 lines
768 B
Python

"""Test top-level imports for `lalib`."""
import importlib
from typing import Any
import pytest
@pytest.mark.integration_test
@pytest.mark.parametrize(
"path_to_package",
[
"lalib",
"lalib.elements",
],
)
def test_top_level_imports(path_to_package: str):
"""Verify `from {path_to_package} import *` works."""
package = importlib.import_module(path_to_package)
environment: dict[str, Any] = {}
exec("...", environment, environment) # noqa: S102
defined_vars_before = set(environment)
exec(f"from {path_to_package} import *", environment, environment) # noqa: S102
defined_vars_after = set(environment)
new_vars = defined_vars_after - defined_vars_before
assert new_vars == set(package.__all__)