tests: add tests for poetry

.github/workflows/ci.yml

@@ -0,0 +1,53 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+env:
+  POETRY_VERSION: 1.7.1
+  GHCR_IMAGE_REPOSITORY: ghcr.io/${{ github.repository_owner }}/poetry
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python:
+          - "3.8"
+          - "3.9"
+          - "3.10"
+          - "3.11"
+          - "3.12"
+        variant:
+          - bookworm
+          - slim
+    steps:
+      - uses: actions/checkout@v3
+      - name: Build Docker Image
+        run: |
+          docker build --target test -t test-image \
+          --build-arg POETRY_VERSION=${{ env.POETRY_VERSION }} \
+          .
+      - name: Run Tests in Docker
+        run: |
+          docker run --rm \
+          -e POETRY_VERSION=${{ env.POETRY_VERSION }} \
+          test-image python3 tests.py
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and Push Docker Image
+        uses: docker/build-push-action@v3.1.0
+        with:
+          context: .
+          push: true
+          tags: ${{ env.GHCR_IMAGE_REPOSITORY }}:${{ github.sha }}-${{ matrix.python }}-${{ matrix.variant }}
+          build-args: |
+            POETRY_VERSION=${{ env.POETRY_VERSION }}

Dockerfile

@@ -1,7 +1,7 @@
 ARG PYTHON_VERSION=3.12
 ARG VARIANT=bookworm
 
-FROM python:${PYTHON_VERSION}-${VARIANT}
+FROM python:${PYTHON_VERSION}-${VARIANT} as base
 
 ENV PYTHONUNBUFFERED=1
 
@@ -16,4 +16,8 @@ RUN python3 -m venv ${POETRY_HOME} &&\
     ${POETRY_HOME}/bin/pip install poetry==${POETRY_VERSION} &&\
     poetry config virtualenvs.create false
 
+FROM base as test
+COPY ./tests/tests.py /usr/src/app/tests.py
+
+FROM base
 WORKDIR /usr/src/app

tests/tests.py

@@ -0,0 +1,49 @@
+import os
+import re
+import subprocess
+import unittest
+
+
+class TestPoetrySetup(unittest.TestCase):
+    def test_poetry_binary_available(self):
+        """
+        Test if Poetry binary is available.
+        """
+
+        result = subprocess.run(["which", "poetry"], capture_output=True, text=True)
+        self.assertEqual(result.returncode, 0, "Poetry binary is not available in PATH")
+
+    def test_poetry_version(self):
+        """
+        Test if the installed Poetry version is correct.
+        """
+
+        expected_version = os.environ.get("POETRY_VERSION")
+        result = subprocess.run(["poetry", "--version"], capture_output=True, text=True)
+        self.assertEqual(result.returncode, 0, "Error executing Poetry")
+        version_match = re.search(r"Poetry \(version (\S+)\)", result.stdout)
+        self.assertIsNotNone(version_match, "Unable to parse Poetry version")
+        self.assertEqual(
+            version_match.group(1),
+            expected_version,
+            f"Expected Poetry version {expected_version}, got {version_match.group(1)}",
+        )
+
+    def test_poetry_without_virtualenvs(self):
+        """
+        Test if Poetry is configured to work without virtual environments.
+        """
+
+        result = subprocess.run(
+            ["poetry", "config", "virtualenvs.create"], capture_output=True, text=True
+        )
+        self.assertEqual(result.returncode, 0, "Error executing Poetry config command")
+        self.assertEqual(
+            result.stdout.strip(),
+            "false",
+            "Poetry is not configured to work without virtual environments",
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()