How to return thrown object in test

[DaKaZ]

In my saga I have code that looks like this:

  try {
// removed for brevity
  } catch (e) {
    const errorMsg = e && e.response ? `Error ${e.response.status} - Unable to create Timesheet` : 'An unknown error occurred';
    const errorObj = e && e.response && e.response.data && e.response.data.result || store.timesheet.model
    yield put(timesheet.actions.setTimesheets(store.timesheet.collection, errorObj, errorMsg));
  }

I have this in my saga test:

  it('should call api', (result) => {
    expect(result).toEqual(call(api, mockState.auth, '/timesheets'));
    return new Error('Something went wrong')
  });

which works great for the generic "unknown error occurred" but I need to test throwing an object like:

    throw({
      response: {
        data: { result: mockTimesheetWithError },
        status: 406
      }
    });

But I can't figure out actually throw the object back to the object. Any ideas?

[inzKornel]

I faced similar problem and do it like:

class MockError extends Error {
  constructor(...params) {
    super(...params);

    if (Error.captureStackTrace) {
      Error.captureStackTrace(this, MockError);
    }

    this.response = {
      data: {
        error: 3001
      }
    };
  }
}

it('should have called genres api first', result => {
    expect(something).toEqual(something);
    return new MockError();
});

it('then should call add notification action', result => {
    expect(result).toEqual(put(someAction(new MockError())));
});

// and it works :)
const someAction = error => console.log(error.response.data)