Initial scaffold: FastAPI micro-service with Docker, SQLite, tests

tests/test_main.py

@@ -0,0 +1,56 @@
+"""Tests for the FastAPI application."""
+
+import pytest
+from fastapi.testclient import TestClient
+
+from app.main import app
+
+client = TestClient(app)
+
+
+class TestHealth:
+    def test_health_endpoint_returns_200(self):
+        response = client.get("/api/health")
+        assert response.status_code == 200
+        data = response.json()
+        assert data["status"] == "healthy"
+        assert data["service"] == "micro-api"
+        assert data["version"] == "0.1.0"
+        assert "timestamp" in data
+
+    def test_root_returns_service_info(self):
+        response = client.get("/")
+        assert response.status_code == 200
+        data = response.json()
+        assert data["service"] == "micro-api"
+        assert data["status"] == "running"
+
+
+class TestDatabase:
+    def test_init_db_creates_tables(self):
+        from app.database import init_db
+
+        # Should not raise
+        init_db()
+
+
+class TestModels:
+    def test_item_create_validation(self):
+        from app.models import ItemCreate
+
+        item = ItemCreate(name="test-item")
+        assert item.name == "test-item"
+
+    def test_item_create_requires_name(self):
+        from app.models import ItemCreate
+
+        with pytest.raises(Exception):
+            ItemCreate()
+
+    def test_item_response_serialization(self):
+        from app.models import ItemResponse
+
+        item = ItemResponse(id=1, name="test")
+        data = item.model_dump()
+        assert data["id"] == 1
+        assert data["name"] == "test"