public void AddExternalUserAccount()
{
Guid userId = Guid.NewGuid();
var command = new AddUserAccountCommand
{
Name = "someUser",
Type = "ActiveDirectory"
};
var result = sut.AddUserAccount(userId, command) as OkResult;
Assert.IsNotNull(result);
identityManagementService.Received(1).AddExternalUserAccount(userId, AccountType.ActiveDirectory, command.Name);
}