A collection of minor improvements to tests

.github/workflows/run-tests.yaml

@@ -60,7 +60,7 @@ jobs:
       - name: Test with tox
         env:
           FORCE_COLOR: 1
-          PYTEST_CI_ARGS: --cov-report=xml --cov-report=html --junitxml=test_artifacts/test_report.xml --color=yes
+          PYTEST_CI_ARGS: --cov-report=xml --junitxml=test_artifacts/test_report.xml --color=yes
         run: tox ${{ matrix.python-version == '3.6' && '--skip-missing-interpreters=true' || '' }}
 
       - name: Upload coverage reports to Codecov

pyproject.toml

@@ -68,7 +68,7 @@ module = [
 check_untyped_defs = true
 
 [tool.pytest.ini_options]
-addopts = "--verbose --cov-config=pyproject.toml"
+addopts = "--verbose --cov-config=pyproject.toml --cov-report=html"
 
 [tool.ruff]
 # ruff is less lenient than pylint and does not make any exceptions

tests/base_tester.py

@@ -1,6 +1,7 @@
 import os
 import sys
 from abc import ABC
+from pathlib import Path
 from pprint import pprint
 from typing import Any, Dict, List
 
@@ -21,6 +22,11 @@
 pylint_pytest.checkers.fixture.FILE_NAME_PATTERNS = ("*",)
 
 
+def get_test_root_path() -> Path:
+    """Assumes ``base_tester.py`` is at ``<root>/tests``."""
+    return Path(__file__).parent
+
+
 class BasePytestTester(ABC):
     CHECKER_CLASS = BaseChecker
     IMPACTED_CHECKER_CLASSES: List[BaseChecker] = []
@@ -41,7 +47,10 @@ def run_linter(self, enable_plugin):
         # pylint: disable-next=protected-access
         target_test_file = sys._getframe(1).f_code.co_name.replace("test_", "", 1)
         file_path = os.path.join(
-            os.getcwd(), "tests", "input", self.MSG_ID, target_test_file + ".py"
+            get_test_root_path(),
+            "input",
+            self.MSG_ID,
+            target_test_file + ".py",
         )
 
         with open(file_path) as fin:

tests/base_tester_test.py

@@ -1,9 +1,14 @@
 import pytest
-from base_tester import BasePytestTester
+from base_tester import BasePytestTester, get_test_root_path
 
 # pylint: disable=unused-variable
 
 
+def test_get_test_root_path():
+    assert get_test_root_path().name == "tests"
+    assert (get_test_root_path() / "input").is_dir()
+
+
 def test_init_subclass_valid_msg_id():
     some_string = "some_string"
 

tests/input/unused-argument/func_param_as_fixture_arg.py

@@ -27,5 +27,8 @@ def test_nyfix(narg):  # unused-argument
 
 @pytest.mark.parametrize("arg", [1, 2, 3])
 def test_narg_is_used_nowhere(myfix, narg):
-    """A test function that uses the param through a fixture"""
+    """
+    A test function that does not use its param (``narg``):
+    Not itself, nor through a fixture (``myfix``).
+    """
     assert myfix