Test pypi publication flow

.github/workflows/test.yml

@@ -55,3 +55,48 @@ jobs:
       uses: codecov/codecov-action@v3
       env:
         CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
+  builddist:
+    name: Build distribution 📦
+    runs-on: ubuntu-latest
+    needs: [test, testwindows]
+    if: github.event_name != 'pull_request'
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: "3.x"
+    - name: Install pypa/build
+      run: >-
+        python3 -m
+        pip install
+        build
+        --user
+    - name: Build a binary wheel and a source tarball
+      run: python3 -m build
+    - name: Store the distribution packages
+      uses: actions/upload-artifact@v3
+      with:
+        name: python-package-distributions
+        path: dist/
+
+  publish-test:
+    runs-on: ubuntu-latest
+    needs: builddist
+    if: github.event_name != 'pull_request'
+    environment:
+      name: testpypi
+      url: https://test.pypi.org/p/<package-name>
+    permissions:
+      id-token: write  # IMPORTANT: mandatory for trusted publishing
+    steps:
+    - name: Download all the dists
+      uses: actions/download-artifact@v3
+      with:
+        name: python-package-distributions
+        path: dist/
+    - name: Publish distribution 📦 to TestPyPI
+      uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        repository-url: https://test.pypi.org/legacy/