public void TestKH()
{
string ten = TestContext.DataRow[0].ToString();
string SDT = "0582301023";
int maxSDT = int.Parse(TestContext.DataRow[1].ToString());
string soNg = TestContext.DataRow[2].ToString();
bool expected = bool.Parse(TestContext.DataRow[3].ToString());
kh = new KhachHang(ten, SDT, soNg, DateTime.Now);
bool actual = kh.CheckInput(maxSDT);
Assert.AreEqual(expected, actual);
}