Add Codecov test-analytics upload

.github/workflows/ci.yml

@@ -43,7 +43,7 @@ jobs:
           cache: pip
       - run: pip install -e ".[dev]"
       - name: Pytest
-        run: pytest --cov-report=xml
+        run: pytest --cov-report=xml --junitxml=junit.xml -o junit_family=legacy
       - name: Upload coverage to Codecov
         if: ${{ !cancelled() }}
         uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
@@ -52,6 +52,13 @@ jobs:
           files: coverage.xml
           flags: py${{ matrix.python-version }}
           fail_ci_if_error: true
+      - name: Upload test results to Codecov
+        if: ${{ !cancelled() }}
+        uses: codecov/test-results-action@0fa95f0e1eeaafde2c782583b36b28ad0d8c77d3 # v1.2.1
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: junit.xml
+          flags: py${{ matrix.python-version }}
 
   # Single check to gate branch protection on, so the matrix can change freely.
   ci-ok:

.gitignore

@@ -17,6 +17,7 @@ env/
 .coverage
 htmlcov/
 coverage.xml
+junit.xml
 
 # Editors / OS
 .idea/

CHANGELOG.md

@@ -19,7 +19,8 @@ follow [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 - Packaging: `src/pychess/` layout, `pyproject.toml`, `pychess` console script,
   `py.typed`.
 - Tooling: Ruff (lint + format), Mypy, pytest-cov (85% gate), `pre-commit`, all
-  run in CI on Python 3.12 and 3.13.
+  run in CI on Python 3.12 and 3.13, with Codecov coverage + test-analytics
+  uploads.
 - `perft` regression tests against published node counts; unit tests for every
   module.