decomposer: generate deliverable files for Define the service contract and project architecture for the FastAPI endpoint monitoring service.; Implement the typed monitor CRUD API and concurrency-safe in-memory state according to the service design.; Implement secure on-demand endpoint checks with status updates, latency measurement, robust error handling, and redacted structured logs.; Add operational API endpoints and environment-driven runtime configuration to the monitoring service.; Create automated tests for the monitoring service.; Package the service with Docker and developer documentation.; Validate the complete project.

tests/test_config.py

@@ -4,10 +4,14 @@ from pydantic import ValidationError
 from app.config import Settings
 
 
-def test_environment_prefix_and_validation(monkeypatch):
-    monkeypatch.setenv("MONITOR_CHECK_TIMEOUT_SECONDS", "2.5")
-    assert Settings().check_timeout_seconds == 2.5
+def test_environment_settings(monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.setenv("MONITOR_PORT", "9000")
+    monkeypatch.setenv("MONITOR_MAX_REDIRECTS", "2")
+    settings = Settings()
+    assert settings.port == 9000
+    assert settings.max_redirects == 2
+
+
+def test_invalid_settings_are_rejected() -> None:
     with pytest.raises(ValidationError):
-        Settings(check_timeout_seconds=0)
-    with pytest.raises(ValidationError):
-        Settings(max_redirects=99)
+        Settings(connect_timeout_seconds=0)