pypi test workflow

.github/workflows/publish-test-pypi.yml

@@ -0,0 +1,58 @@
+name: Upload FF-PIV to Test-PyPi
+
+on:
+  release:
+    types: [published]
+  # allows running the workflow manually
+  workflow_dispatch:
+
+jobs:
+  build-artifacts:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.11'
+    - name: Install dependencies
+      run: |
+        pip install tomli flit twine
+    - name: Build artifacts
+      run: flit build
+    - uses: actions/upload-artifact@v3
+      with:
+        name: releases
+        path: dist
+  test-built-dist:
+    needs: build-artifacts
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash -l {0}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          python-version: '3.11'
+      - name: Verify the built dist/wheel is valid
+        run: |
+          python -m pip install dist/ffpiv*.whl
+          python -c "import ffpiv;print(ffpiv.__version__)"
+  upload-to-test-pypi:
+    needs: test-built-dist
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: releases
+          path: dist
+      - name: Publish package to TestPyPI
+        uses: pypa/gh-action-pypi-publish@v1.5.1
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_TEST_TOKEN }}
+          repository_url: https://test.pypi.org/legacy/
+          verbose: true
+          skip_existing: true