Add GitHub Python workflow tests

.github/workflows/python.yml

@@ -0,0 +1,43 @@
+name: Python checks
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python: ["3.11"]
+        clang: ["18"]
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python }}
+      - name: Setup Clang
+        uses: egor-tensin/setup-clang@v1
+        with:
+          version: ${{ matrix.clang }}
+          platform: x64
+      - name: Install virtual env and dependencies
+        run: |
+          python -m venv .venv
+          source ./.venv/bin/activate
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+      - name: Type checks
+        run: |
+          source ./.venv/bin/activate
+          python -m mypy *.py --check-untyped-defs
+      - name: Tests
+        run: |
+          source ./.venv/bin/activate
+          PY_CPPMODEL_LIBCLANG_PATH=/usr/lib/llvm-18/lib/libclang-18.so.1 \
+          python -m unittest discover --verbose .

test.macos.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+# Virtual environment setup
+python3 -m venv .venv           # Create a Python virtual env
+source ./.venv/bin/activate     # Activate the virtual env for bash by source.
+
+# Type checks
+python -m mypy *.py --check-untyped-defs  # Run mypy to check type hints
+
+Unit tests
+PY_CPPMODEL_LIBCLANG_PATH=/Library/Developer/CommandLineTools/usr/lib/libclang.dylib \
+python -m unittest discover --verbose .             # Run tests

test_py_cppmodel.py

@@ -1,8 +1,15 @@
 import clang
+import os
 import py_cppmodel
 import unittest
 
-clang.cindex.Config.set_library_path("/Library/Developer/CommandLineTools/usr/lib/")  # type: ignore
+from ctypes.util import find_library
+
+LIBCLANG_PATH = os.environ.get("PY_CPPMODEL_LIBCLANG_PATH")
+if not LIBCLANG_PATH:
+    raise RuntimeError("PY_CPPMODEL_LIBCLANG_PATH is unset")
+
+clang.cindex.Config.set_library_file(LIBCLANG_PATH)  # type: ignore
 
 from clang.cindex import TranslationUnit