Adding test cases for traceback file name

tests/test_exception_handlers.py

@@ -1,5 +1,5 @@
 import pytest
-from fastapi import FastAPI, HTTPException
+from fastapi import Depends, FastAPI, HTTPException
 from fastapi.exceptions import RequestValidationError
 from fastapi.testclient import TestClient
 from starlette.responses import JSONResponse
@@ -28,6 +28,15 @@ def server_error_exception_handler(request, exception):
 client = TestClient(app)
 
 
+def dependency_with_yield():
+    yield "This is a dependency with yield"
+
+
+@app.get("/with-yield", dependencies=[Depends(dependency_with_yield)])
+def with_yield():
+    raise RuntimeError("Should print traceback, with file and line number")
+
+
 @app.get("/http-exception")
 def route_with_http_exception():
     raise HTTPException(status_code=400)
@@ -65,3 +74,11 @@ def test_override_server_error_exception_response():
     response = client.get("/server-error")
     assert response.status_code == 500
     assert response.json() == {"exception": "server-error"}
+
+
+def test_showing_exception_trace():
+    app.debug = True
+    client = TestClient(app, raise_server_exceptions=False)
+    response = client.get("/with-yield")
+    assert response.status_code == 500
+    assert __file__ in response.text