Make CI testing more efficient

Author: bbc2

.github/workflows/test.yml

@@ -31,17 +31,31 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+      - name: Install the latest version of uv
+        uses: astral-sh/setup-uv@v7
         with:
-          python-version: ${{ matrix.python-version }}
-          allow-prereleases: true
-
-      - name: Upgrade pip
-        run: python -m pip install --upgrade pip
-
-      - name: Install dependencies
-        run: pip install tox tox-gh-actions
-
-      - name: Test with tox
-        run: tox
+          enable-cache: true
+          cache-dependency-glob: "pyproject.toml"
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Add .local/bin to Windows PATH
+        if: runner.os == 'Windows'
+        shell: bash
+        run: echo "$USERPROFILE/.local/bin" >> $GITHUB_PATH
+
+      - name: Install tox
+        run: uv tool install --python-preference only-managed --python 3.14 tox --with tox-uv --with tox-gh
+
+      - name: Install Python
+        if: matrix.python-version != '3.14'
+        run: uv python install --python-preference only-managed ${{ matrix.env }}
+
+      - name: Setup test suite
+        run: tox run -vv --notest --skip-missing-interpreters false
+        env:
+          TOX_GH_MAJOR_MINOR: ${{ matrix.env }}
+
+      - name: Run test suite
+        run: tox run --skip-pkg-install
+        env:
+          TOX_GH_MAJOR_MINOR: ${{ matrix.env }}