Add deploy-to-pypi-test job

Author: ankandrew

.github/workflows/main.yaml

@@ -1,12 +1,12 @@
-name: test
-run-name: Test
-on: [ push ]
+name: Test and Deploy
+on: push
 jobs:
   test:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ '3.10', '3.11', '3.12' ]
+        #        python-version: [ '3.10', '3.11', '3.12' ]  # TODO: Re-include to 3.11 and 3.12
+        python-version: [ '3.10' ]
         os: [ ubuntu-latest ]
     runs-on: ${{ matrix.os }}
     steps:
@@ -31,3 +31,24 @@ jobs:
 
       - name: Run tests
         run: make test
+
+  deploy-to-pypi-test:
+    name: Deploy to TestPyPI
+    runs-on: ubuntu-latest
+    needs: test
+    if: github.ref == 'refs/heads/develop'
+
+    steps:
+      - name: Install poetry
+        run: pipx install poetry
+
+      - name: Setup Python
+        uses: actions/setup-python@v3
+        with:
+          python-version: '3.10'
+
+      - name: Configure Poetry for TestPyPI
+        run: poetry config repositories.testpypi https://test.pypi.org/legacy/
+
+      - name: Build and publish to TestPyPI
+        run: poetry publish --build --repository testpypi