MAESTRO: add failing tests for tests endpoint

backend/tests/api/test_tests_router.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+import pytest
+from httpx import ASGITransport, AsyncClient
+
+from app.engine.scanner_registry import ScannerRegistry
+from app.main import app
+
+
+@pytest.mark.asyncio
+async def test_get_tests_returns_all_registered_tests() -> None:
+    registry = ScannerRegistry()
+    expected = registry.list_tests()
+    expected_lookup = {test.id: test.name for test in expected}
+
+    async with AsyncClient(
+        transport=ASGITransport(app=app),
+        base_url="http://test",
+    ) as client:
+        response = await client.get("/api/tests")
+
+    assert response.status_code == 200
+
+    payload = response.json()
+    assert isinstance(payload, list)
+    assert len(payload) == len(expected_lookup)
+
+    response_lookup = {item["id"]: item["name"] for item in payload}
+    assert len(response_lookup) == len(expected_lookup)
+    assert response_lookup == expected_lookup