feat: Task 19 — Health-Check Blueprint mit Readiness-Endpunkt (closes #19)

tests/test_health.py

@@ -0,0 +1,65 @@
+"""Tests für src.routes.health — Health-Check mit Readiness."""
+
+from __future__ import annotations
+
+from unittest.mock import MagicMock, patch
+
+from src.app import create_app
+
+
+class TestHealthStatus:
+    """Tests für /health Endpoint."""
+
+    def setup_method(self) -> None:
+        """Jeder Test bekommt eine frische App mit gemocktem Redis."""
+        with patch("src.queue.handler.redis.Redis"):
+            self.app = create_app()
+            self.client = self.app.test_client()
+
+    def test_health_status_ok(self) -> None:
+        """GET /health → 200 mit Status-JSON."""
+        self.app.queue_handler = MagicMock(queue_size=MagicMock(return_value=42))  # type: ignore[assignment]
+        response = self.client.get("/health")
+        assert response.status_code == 200
+        data = response.get_json()
+        assert data["status"] == "ok"
+        assert "queue_size" in data
+        assert "python_version" in data
+        assert "platform" in data
+
+    def test_health_queue_size_integer(self) -> None:
+        """queue_size ist ein Integer."""
+        self.app.queue_handler = MagicMock(queue_size=MagicMock(return_value=7))  # type: ignore[assignment]
+        response = self.client.get("/health")
+        data = response.get_json()
+        assert isinstance(data["queue_size"], int)
+        assert data["queue_size"] == 7
+
+
+class TestHealthReady:
+    """Tests für /health/ready Endpoint."""
+
+    def setup_method(self) -> None:
+        """Jeder Test bekommt eine frische App."""
+        with patch("src.queue.handler.redis.Redis"):
+            self.app = create_app()
+            self.client = self.app.test_client()
+
+    def test_health_ready_redis_alive(self) -> None:
+        """Redis ping erfolgreich → ready=true."""
+        response = self.client.get("/health/ready")
+        # Redis wird gemockt, ping sollte successful sein
+        assert response.status_code == 200
+        data = response.get_json()
+        assert data["ready"] is True
+
+    def test_health_ready_redis_fails(self) -> None:
+        """Redis ping fehlschlägt → ready=false, 503."""
+        with patch.object(
+            self.app.queue_handler.redis, "ping", side_effect=Exception("Redis down")
+        ):
+            response = self.client.get("/health/ready")
+            assert response.status_code == 503
+            data = response.get_json()
+            assert data["ready"] is False
+            assert "reason" in data