rebuild(stage-1): establish isolated application skeleton

next/tests/test_health.py

@@ -0,0 +1,36 @@
+from fastapi.testclient import TestClient
+
+from backend.bootstrap.application import create_application
+from backend.bootstrap.settings import Settings
+
+
+def test_health_reports_runtime_environment(tmp_path) -> None:
+    application = create_application(
+        Settings(environment="test", debug=False, data_directory=tmp_path)
+    )
+
+    with TestClient(application) as client:
+        response = client.get("/api/health")
+
+    assert response.status_code == 200
+    assert response.json() == {"status": "ok", "environment": "test"}
+
+
+def test_unknown_failure_uses_safe_error_contract(tmp_path) -> None:
+    application = create_application(
+        Settings(environment="test", debug=False, data_directory=tmp_path)
+    )
+
+    @application.get("/api/test/failure")
+    def fail() -> None:
+        raise RuntimeError("secret provider details")
+
+    with TestClient(application, raise_server_exceptions=False) as client:
+        response = client.get("/api/test/failure")
+
+    payload = response.json()["error"]
+    assert response.status_code == 500
+    assert payload["code"] == "internal_error"
+    assert payload["message"] == "服务暂时不可用，请稍后重试。"
+    assert "secret provider details" not in response.text
+    assert len(payload["correlation_id"]) == 32