message: Add example of mocking the user in an Auth module
diff: @@ -98,4 +98,16 @@ UsersModule.mock({
  });
  ```
  -Then, run `jest` to get your test results.
  +For authentication (a common use case for mocking the context), if `UsersModule` imports `AuthModule` and you want to mock the logged in user during tests to have an admin role, you can do this in `beforeAll`:
  +
  +```ts
  +AuthModule.mock({
  + contextBuilder: () => ({
  + user: {
  + roles: ['admin'],
  + },
  + }),
  +});
  +```
  +
  +In `afterAll`, or when you're done with the mock, run `AuthModule.resetMock()`.
  