public void DeleteRole()
{
var apiRepository = new ApiMongoRepository(CONNECTION_STRING);
var repository = new MongoRepository(CONNECTION_STRING,
apiRepository);
var userName = "******";
var secret = "test";
var manager = repository.CreateManager(userName, secret);
var domain = repository.CreateDomain("test", manager);
var role = repository.CreateRole(domain.Id, "test");
repository.DeleteRole(role);
role = repository.GetRole(domain.Id, "test");
Assert.IsNull(role);
repository.DeleteManager(manager.Id, secret);
}