ci: test uploading to test.pypi.org

Signed-off-by: Yves Bastide <yves@botify.com>

Author: ybastide

.github/workflows/build.yaml

@@ -0,0 +1,17 @@
+name: "Build simpleflow"
+
+on:
+  release:
+    types:
+      - created
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: python setup.py sdist bdist_wheel
+      - uses: actions/upload-artifact@v3
+        with:
+          name: simpleflow
+          path: dist

.github/workflows/test-release.yaml

@@ -0,0 +1,35 @@
+name: "Publish release to TestPyPI"
+
+on:
+  workflow_run:
+    workflows:
+      - build
+    types:
+      - completed
+    branches:
+      - main
+
+jobs:
+  publish-testpypi:
+    name: Upload release to TestPyPI
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+#    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+    runs-on: ubuntu-latest
+    environment:
+      name: test-release
+      url: https://test.pypi.org/p/simpleflow
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/download-artifact@v3
+        with:
+          name: simpleflow
+
+      - name: Publish package distributions to TestPyPI
+        uses: pypa/gh-action-pypi-publish@b7f401de30cb6434a1e19f805ff006643653240e
+        with:
+          repository-url: https://test.pypi.org/legacy/
+          verbose: true
+          print-hash: true