public void LayDanhSachPhong_TestStatusResponse()
{
var actionResult = controller.LayDanhSachPhong();
//Act
var actual_result = actionResult as OkNegotiatedContentResult <List <PhongDTO> >;
var expected_result = data_test.DemSoLuongPhong();
//Assert
Assert.AreEqual(expected_result, actual_result.Content.Count);
}