pytest recommendation: pip install --editable .

https://docs.pytest.org/en/stable/how-to/existingtestsuite.html

This makes setting `PYTHONPATH` unnecessary and will pull requirements from `pyproject.toml` instead of `requirements.txt`, so it is similar to end-user installations.

`makedir -p data/plugins` will do both `mkdir data` and `mkdir data/plugins`.

The `$CI` environment variable might be better to use than `$TESTING` because it is preset to `true` in GitHub Actions.
* https://docs.github.com/en/actions/reference/variables-reference#default-environment-variables
* https://docs.pytest.org/en/stable/explanation/ci.html

.github/workflows/coverage_test.yml

@@ -26,20 +26,19 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install -r requirements.txt
-          pip install pytest pytest-cov pytest-asyncio
+          pip install pytest pytest-asyncio pytest-cov
+          pip install --editable .
 
       - name: Run tests
         run: |
-          mkdir data
-          mkdir data/plugins
-          mkdir data/config
-          mkdir data/temp
+          mkdir -p data/plugins
+          mkdir -p data/config
+          mkdir -p data/temp
           export TESTING=true
           export ZHIPU_API_KEY=${{ secrets.OPENAI_API_KEY }}
-          PYTHONPATH=./ pytest --cov=. tests/ -v -o log_cli=true -o log_level=DEBUG
+          pytest --cov=. tests/ -v -o log_cli=true -o log_level=DEBUG
 
       - name: Upload results to Codecov
         uses: codecov/codecov-action@v5
         with:
-          token: ${{ secrets.CODECOV_TOKEN }}
+          token: ${{ secrets.CODECOV_TOKEN }}