WIP: Add a windows test build

Author: pimterry

.github/workflows/ci.yml

@@ -48,6 +48,33 @@ jobs:
           path: dist/*
           if-no-files-found: error
 
+  # We build on Windows too, purely to check the build process is cross-compatible for contributors
+  test-windows-build:
+    name: Build & test on Windows
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 100
+
+      # Install Node
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20.8.0
+          cache: 'npm'
+
+      # Install & build & test:
+      - run: npm ci
+
+      - run: npm run test:unit
+
+      # Build & run normal integration tests:
+      - name: Build & test
+        run: npm run test:integration
+        if: github.ref != 'refs/heads/main'
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # To pull server without rate limit issues in CI
+
   publish-netlify:
     name: Deploy ${{ (github.ref == 'refs/heads/main' && 'to Netlify production') || 'Netlify preview' }}
     if: github.event_name == 'push'