public async Task ThenAnInvitationIsAdded(
[Frozen] Mock <IAuthenticationService> authService,
[Frozen] Mock <IMediator> mediator,
RegistrationController controller)
{
//arrange
mediator.Setup(x => x.Send(It.Is <GetInvitationQuery>(s => s.Ukprn == authService.Object.Ukprn), It.IsAny <CancellationToken>())).ReturnsAsync(new GetInvitationQueryResult(new List <InvitationDto>()));
//act
await controller.InvitedEmployers(null, null);
//assert
mediator.Verify(x => x.Send(It.IsAny <GetInvitationQuery>(), It.IsAny <CancellationToken>()), Times.Once);
}
