App: Use testcontainers to check integration with OctoPrint

.dockerignore

@@ -0,0 +1,8 @@
+.git/
+
+# Python
+*.egg*
+venv/
+
+# Local files
+.idea/

.github/workflows/python.yml

@@ -19,8 +19,10 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - run: pip install OctoPrint
     - name: Install test dependencies
-      run: pip install mock
-    - name: Run tests
+      run: pip install mock testcontainers-compose
+    - name: Run unit tests
       run: python -m unittest discover
+    - name: Run integration tests
+      run: python -m unittest discover -p "integration_*.py"
     - name: Install module
       run: pip install -e .

Dockerfile.integration

@@ -0,0 +1,4 @@
+FROM octoprint/octoprint:latest
+ENV PIP_USER false
+ADD . /OctoPrint-RestoreLevelingAfterG28
+RUN pip install --editable /OctoPrint-RestoreLevelingAfterG28

docker-compose.yml

@@ -0,0 +1,9 @@
+version: '2.4'
+
+services:
+  octoprint:
+    build:
+      context: .
+      dockerfile: Dockerfile.integration
+    ports:
+      - 80:80

tests/integration_octoprint.py

@@ -0,0 +1,17 @@
+import time
+import unittest
+from pathlib import Path
+
+from testcontainers.compose import DockerCompose
+
+
+class TestIntegration(unittest.TestCase):
+
+	def test_octoprint_boots_without_errors(self):
+		project_root = Path(__file__).parent.parent
+		with DockerCompose(str(project_root)) as compose:
+			time.sleep(6)  # Give OctoPrint time to boot
+			stdout, stderr = compose.get_logs()
+			self.assertEqual(b"", stderr, msg="empty stderr")
+			print(stdout.decode())
+			self.assertTrue(b"|  Restore Leveling After G28" in stdout, msg="plugin was registered")