tests/test_error_handling.py

from unittest.mock import patch, AsyncMock
from fastapi.testclient import TestClient

# Mock database connections before importing app
with patch("app.main.connect_to_mongo", new_callable=AsyncMock), \
     patch("app.main.connect_to_database", new_callable=AsyncMock):
    from app.main import app

client = TestClient(app)

def test_404_error_handling():
    response = client.get("/non-existent-route")
    assert response.status_code == 404
    data = response.json()
    assert data["success"] is False
    assert data["error"] == "Not Found"
    assert data["detail"] == "Resource not found"
    assert "request_id" in data
    assert "timestamp" in data

def test_validation_error_handling():
    # token query param is required for this endpoint
    response = client.post("/debug/verify-token")
    assert response.status_code == 422
    data = response.json()
    assert data["success"] is False
    assert data["error"] == "Validation Error"
    assert data["detail"] == "The request contains invalid data"
    assert "errors" in data
    assert isinstance(data["errors"], list)
    assert len(data["errors"]) > 0
    assert "field" in data["errors"][0]
    assert "message" in data["errors"][0]
    assert "type" in data["errors"][0]