Add support for coverage

.github/workflows/autotest.yml

@@ -33,7 +33,14 @@ jobs:
             pip install 'numpy<2'
             pip install pywin32
           }
-          python -m unittest discover -v -s ./comtypes/test -t comtypes\test
+          pip install coverage[toml]
+          coverage run -m unittest discover -v -s comtypes\test -t comtypes\test
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          fail_ci_if_error: true
+          network_filter: comtype
+          token: ${{ secrets.CODECOV_TOKEN }}
       - name: Unregister the OutProc COM server
         run: |
           cd source/CppTestSrv

README.md

@@ -5,6 +5,7 @@
 [![PyPI - License](https://img.shields.io/pypi/l/comtypes)](https://pypi.org/project/comtypes/) [![PyPI - Downloads](https://img.shields.io/pypi/dm/comtypes)](https://pypi.org/project/comtypes/)  
 [![GitHub Repo stars](https://img.shields.io/github/stars/enthought/comtypes?style=social)](https://github.com/enthought/comtypes/stargazers) [![GitHub forks](https://img.shields.io/github/forks/enthought/comtypes?style=social)](https://github.com/enthought/comtypes/network/members) [![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)  
 [![Tidelift Subscription](https://tidelift.com/badges/package/pypi/comtypes)](https://tidelift.com/subscription/pkg/pypi-comtypes?utm_source=pypi-comtypes&utm_medium=readme)
+[![Coverage](https://img.shields.io/codecov/c/github/enthought/comtypes)](https://app.codecov.io/github/enthought/comtypes)
 
 
 `comtypes` is a lightweight pure Python [COM](https://learn.microsoft.com/en-us/windows/win32/com/component-object-model--com--portal) package based on the [`ctypes`](https://docs.python.org/library/ctypes.html) foreign function interface library.

pyproject.toml

@@ -40,3 +40,15 @@ ignore = ["E402"]
 "comtypes/test/test_subinterface.py" = ["E401", "F401", "F403", "F405"]
 "comtypes/test/test_urlhistory.py" = ["E401", "F401", "F403", "F405", "F841"]
 "comtypes/test/test_variant.py" = ["F401", "F821", "F841"]
+
+[tool.coverage.run]
+# Specify the source directory to avoid tracking temporary files created by "test_client_regenerate_modules.py".
+# Without this, coverage track these temporary files, leading to error when trying to generate a report.
+source = ["comtypes"]
+omit = ["comtypes/gen/*"]
+
+[tool.coverage.report]
+exclude_also = [
+    "if __name__ == .__main__.:",
+    "if TYPE_CHECKING:",
+]