what is the nunit test code for login

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;

public partial class Login : System.Web.UI.Page
{
    SqlConnection  con; 
    SqlCommand  cmd;
    SqlDataReader dr;
    
    protected void Login1_Authenticate(object sender, AuthenticateEventArgs e)
    {
        SqlConnection con = new SqlConnection(MyClass.GetConnection());
        SqlCommand cm = new SqlCommand("Select * from AllUsers where userid=@userid and psw=@psw", con);
        SqlParameter p1 = cm.Parameters.Add("userid", SqlDbType.VarChar, 50);
        SqlParameter p2 = cm.Parameters.Add("psw", SqlDbType.VarChar, 50);
        p1.Value = Login1.UserName;
        p2.Value = Login1.Password;
        if (con.State == ConnectionState.Closed) 
            con.Open();
        SqlDataReader dr = cm.ExecuteReader();
        if (dr.Read())
        {
            
            Session.Add("userid", Login1.UserName);
            Session.Add("fname", dr["fname"]);
            Session.Add("Hospital_MinicipalityId", dr["Hospital_MinicipalityId"]);
            if (dr["Role"].ToString().Equals("H"))
            {
                con.Close();
                Response.Redirect("HospitalHome.aspx");
            }
            else if (dr["Role"].ToString().Equals("M"))
            {
                con.Close();
                Response.Redirect("MunicipalityHomePage.aspx");
            }
            else if (dr["Role"].ToString().Equals("A"))
            {
                con.Close();
                Response.Redirect("AdminHomePage.aspx");
            }
            else
            {
                con.Close();
                Response.Redirect("CDMOHomePage.aspx");
            }
        }
        Login1.FailureText = "Invalid User id /Password Login Denied";
        con.Close();