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using Microsoft.EntityFrameworkCore;
using MySql.Data.MySqlClient;
using System;
using System.Collections.Generic;
using System.Linq;
using NUnit.Framework;
using MySql.EntityFrameworkCore.Basic.Tests.DbContextClasses;
using MySql.EntityFrameworkCore.Basic.Tests.Utils;

namespace MySql.EntityFrameworkCore.Basic.Tests
{
  public class MultiSchemaTests
  {
    [OneTimeTearDown]
    public void OneTimeTearDown()
    {
      using (BodyShopContext context = new BodyShopContext())
      {
        using (MySqlConnection conn = (MySqlConnection)context.Database.GetDbConnection())
        {
          MySqlCommand cmd = conn.CreateCommand();
          cmd.CommandText = @"DROP DATABASE IF EXISTS `01cars`;
            DROP DATABASE IF EXISTS `02bodyshops`;
            DROP DATABASE IF EXISTS `03employees`;";
          conn.Open();
          context.Database.EnsureDeleted();
          cmd.Connection = conn;
          cmd.ExecuteNonQuery();
        }
      }
    }

    [Test]
    public void MultiSchemaTest()
    {
      PopulateData();
      using (BodyShopContext context = new BodyShopContext())
      {
        using (MySqlConnection conn = (MySqlConnection)context.Database.GetDbConnection())
        {
          MySqlCommand cmd = conn.CreateCommand();
          cmd.CommandText = "SHOW DATABASES WHERE `Database` IN('01cars', '02bodyshops', '03employees')";
          conn.Open();
          List<string> databases = new List<string>(new string[] { "01cars", "02bodyshops", "03employees" });
          int count = 0;
          using (MySqlDataReader reader = cmd.ExecuteReader())
          {
            while (reader.Read())
            {
              Assert.Contains(reader.GetString(0), databases);
              count++;
            }
          }
          Assert.AreEqual(3, count);
        }
      }
    }

    [Test]
    public void LoadingData()
    {
      PopulateData();
      using (BodyShopContext context = new BodyShopContext())
      {
        Assert.AreEqual(2, context.Car.Count());
        Assert.AreEqual(2, context.BodyShop.Count());
        Assert.AreEqual(2, context.Employee.Count());
      }
    }

    private void PopulateData()
    {
      using (BodyShopContext context = new BodyShopContext())
      {
        // Clean databases
        context.Database.EnsureDeleted();
        MySQLTestStore.DeleteDatabase("01cars");
        MySQLTestStore.DeleteDatabase("02bodyshops");
        MySQLTestStore.DeleteDatabase("03employees");
        context.Database.EnsureCreated();

        context.BodyShop.AddRange(new BodyShop
        {
          Name = "Western Collision Works",
          City = "Hollywood",
          State = "California",
          Brand = "Chevrolet"
        },
        new BodyShop
        {
          Name = "Yosemite Auto Body Shop",
          City = "Pico-Union",
          State = "California",
          Brand = "Ford"
        });

        context.Car.AddRange(new Car
        {
          LicensePlate = "ATD 427",
          Make = "Chevrolet",
          Model = "Cruze",
          State = "New"
        },
        new Car
        {
          LicensePlate = "TJC 265",
          Make = "Fore",
          Model = "Escape",
          State = "Used"
        });

        context.Employee.AddRange(new Employee
        {
          FirstName = "Jonh",
          LastName = "Doe",
          DisplayName = "Jonhy",
          Timestamp = DateTime.Now
        },
        new Employee
        {
          FirstName = "Maurice",
          LastName = "Kent",
          DisplayName = "Mau",
          Timestamp = DateTime.Now
        });

        context.SaveChanges();
      }
    }
  }
}