public async Task And_EntityNotFoundException_Then_Returns_NotFound(
            string epaoId,
            NotFoundException <GetEpaoResult> notFoundException,
            [Frozen] Mock <IMediator> mockMediator,
            [Greedy] EpaosController controller)
        {
            mockMediator
            .Setup(mediator => mediator.Send(
                       It.IsAny <GetEpaoQuery>(),
                       It.IsAny <CancellationToken>()))
            .ThrowsAsync(notFoundException);

            var controllerResult = await controller.GetEpao(epaoId) as NotFoundResult;

            controllerResult !.StatusCode.Should().Be((int)HttpStatusCode.NotFound);
        }
        public async Task And_ValidationException_Then_Returns_BadRequest(
            string epaoId,
            ValidationException exception,
            [Frozen] Mock <IMediator> mockMediator,
            [Greedy] EpaosController controller)
        {
            mockMediator
            .Setup(mediator => mediator.Send(
                       It.IsAny <GetEpaoQuery>(),
                       It.IsAny <CancellationToken>()))
            .ThrowsAsync(exception);

            var controllerResult = await controller.GetEpao(epaoId) as BadRequestObjectResult;

            controllerResult !.StatusCode.Should().Be((int)HttpStatusCode.BadRequest);
            controllerResult !.Value.Should().Be(exception.Message);
        }
        public async Task Then_Gets_Epao_From_Mediator(
            string epaoId,
            GetEpaoResult mediatorResult,
            [Frozen] Mock <IMediator> mockMediator,
            [Greedy] EpaosController controller)
        {
            controller.Url = Mock.Of <IUrlHelper>();
            var expectedModel = (GetEpaoApiModel)mediatorResult.Epao;

            expectedModel.BuildLinks(controller.Url);
            mockMediator
            .Setup(mediator => mediator.Send(
                       It.Is <GetEpaoQuery>(query => query.EpaoId == epaoId),
                       It.IsAny <CancellationToken>()))
            .ReturnsAsync(mediatorResult);

            var controllerResult = await controller.GetEpao(epaoId) as ObjectResult;

            controllerResult !.StatusCode.Should().Be((int)HttpStatusCode.OK);
            var model = controllerResult.Value as GetEpaoApiModel;

            model.Should().BeEquivalentTo(expectedModel);
        }