public void TestSignInUserUserNullPasswordThrowsArgumentNullException()
{
var logic = new AuthenticationLogic();
Exception exception = null;
try
{
logic.SignInUser("admin", null);
}
catch (Exception ex)
{
exception = ex;
}
Assert.IsNotNull(exception);
Assert.AreEqual(
typeof(ArgumentNullException), exception.GetType());
}