using Microsoft.VisualStudio.TestTools.UnitTesting;
using Moq;
using SportsStore.Domain.Abstract;
using SportsStore.Domain.Entities;
using SportsStore.WebUI.Controllers;
using SportsStore.WebUI.HtmlHelpers;
using SportsStore.WebUI.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.Mvc;

namespace SportsStore.UnitTests
{
    [TestClass]
    public class UnitTest1
    {
        [TestMethod]
        public void Can_Paginate()
        {
            // Arrange
            // - create the mock repository
            Mock<IProductRepository> mock = new Mock<IProductRepository>();
            mock.Setup(m => m.Products).Returns(new Product[] {
                new Product {ProductID = 1, Name = "P1"},
                new Product {ProductID = 2, Name = "P2"},
                new Product {ProductID = 3, Name = "P3"},
                new Product {ProductID = 4, Name = "P4"},
                new Product {ProductID = 5, Name = "P5"}
            }.AsQueryable());

            // create a controller and make the page size 3 items
            ProductController controller = new ProductController(mock.Object);
            controller.PageSize = 3;

            // Action
            IEnumerable<Product> result = (IEnumerable<Product>)controller.List(2).Model;

            // Assert
            Product[] prodArray = result.ToArray();
            Assert.IsTrue(prodArray.Length == 2);
            Assert.AreEqual(prodArray[0].Name, "P4");
            Assert.AreEqual(prodArray[1].Name, "P5");
        }

        [TestMethod]
        public void Can_Generate_Page_Links()
        {
            // Arrange - define an HTML helper - we need to do this
            // in order to apply the extension method
            HtmlHelper myHelper = null;

            // Arrange - create PagingInfo data
            PagingInfo pagingInfo = new PagingInfo
            {
                CurrentPage = 2,
                TotalItems = 28,
                ItemsPerPage = 10
            };

            // Arrange - set up the delegate using a lambda expression
            Func<int, string> pageUrlDelegate = i => "Page" + i;

            // Act
            MvcHtmlString result = myHelper.PageLinks(pagingInfo, pageUrlDelegate);

            // Assert
            Assert.AreEqual(result.ToString(), @" < a href = ""Page1"" > 1 </ a >< a class=""selected""
href=""Page2"">2</a><a href = ""Page3"">3</a>");
        }

    }
}