public void PostOrganisationWithExistingOrganisationNameTest()
{
_organisationControllerWithAuthenticatedUser
.Calling(o => o.Post(organisation.Name, "gewoon een description",
"color", new FormDataCollection(new List<KeyValuePair<string, string>>()
)))
.ShouldReturn()
.InternalServerError()
.WithException(new Exception("Organisation name already exists"));
}