public async Task AssignApiRoleQueriesForCorrectId() { var mediator = new Mock<IMediator>(); var logger = new Mock<ILogger<SiteController>>(); string userId = Guid.NewGuid().ToString(); mediator.Setup(x => x.Send(It.Is<UserByUserIdQuery>(q => q.UserId == userId))).Returns(new ApplicationUser()); var controller = new SiteController(null, logger.Object, mediator.Object); await controller.AssignApiAccessRole(userId); mediator.Verify(m => m.Send(It.Is<UserByUserIdQuery>(q => q.UserId == userId)), Times.Once); }