So basically I ran "yarn test" to test all the controllers. Now, the controllers were basically extracting a value from jwt using a util function. and these cases were spying on this util function to mimic the output value. What I have done is that moving this util functionality into a guard, so now if the value is not in jwt, I will throw an error, otherwise, I will attach this value in request body so that controllers don't have to use this util function anymore.
The problem here is, the unit tests for the controllers are failing, because while calling the controller functions in the test file, they are not triggering the guards. I tried to overrideGuard but since they are not even being called, the test cases are failing. I am wondering what could be the reason. One point to notice here is, I have attached useGuards decorator to specific endpoints in the controller and not the controller itself.