chore: Unit test as ci

.github/workflows/ch09_jobs.yml

@@ -0,0 +1,35 @@
+name: CI for Ch09 using python platform
+
+on: push
+
+defaults:
+  run:
+    working-directory: ./Ch09/
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [ "3.10" ]
+        poetry-version: [ "1.8.3" ]
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Run image
+        uses: abatilo/actions-poetry@v2
+        with:
+          poetry-version: ${{ matrix.poetry-version }}
+      - uses: actions/cache@v3
+        name: Define a cache for the virtual environment based on the dependencies lock file
+        with:
+          path: ./.venv
+          key: venv-${{ hashFiles('poetry.lock') }}
+      - name: Install the project dependencies
+        run: poetry install
+      - name: Run test
+        run: poetry run make test
+

Ch09/poetry.toml

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+[virtualenvs]
+create = true
+in-project = true