public async Task GetOrganisationByAppicationId_OnSuccess_ReturnsOrganisationAndOk()
{
var organisationId = Guid.NewGuid();
var organisation = new Organisation {
Id = organisationId
};
_mediator.Setup(x => x.Send(It.IsAny <GetOrganisationByApplicationIdRequest>(), It.IsAny <CancellationToken>()))
.ReturnsAsync(organisation);
var result = await _controller.GetOrganisationByApplicationId(_applicationId);
result.Should().BeOfType <ActionResult <Organisation> >();
result.Result.Should().BeOfType <OkObjectResult>();
var expectedOrganisation = ((ObjectResult)result.Result).Value as Organisation;
expectedOrganisation.Id.Should().Be(organisationId);
}