public void ItSetsTheEventCategoryToUsers()
{
eventFactoryMock.Expect(mock => mock.MakeUniversalAnalyticsEvent(
Arg<string>.Is.Anything,
Arg<string>.Is.Equal(EventCategoryEnum.Users.ToString()),
Arg<string>.Is.Anything,
Arg<string>.Is.Anything,
Arg<string>.Is.Anything))
.Return(analyticsEvent);
tracker.TrackUserRegistration(TransactionSource.RestApi);
eventTrackerMock.AssertWasCalled(mock => mock.TrackEvent(analyticsEvent));
}