Added Tests for BlogPostNavigation

Author: linkdotnet

LinkDotNet.Blog.UnitTests/Web/Shared/Admin/CreateNewBlogPostTests.cs

@@ -1,5 +1,4 @@
 using System.Linq;
-using AngleSharp.Dom;
 using Bunit;
 using FluentAssertions;
 using LinkDotNet.Blog.TestUtilities;

LinkDotNet.Blog.UnitTests/Web/Shared/BlogPostNavigationTests.cs

@@ -0,0 +1,70 @@
+using Bunit;
+using FluentAssertions;
+using LinkDotNet.Blog.Web.Shared;
+using LinkDotNet.Domain;
+using Moq;
+using X.PagedList;
+using Xunit;
+
+namespace LinkDotNet.Blog.UnitTests.Web.Shared
+{
+    public class BlogPostNavigationTests : TestContext
+    {
+        [Fact]
+        public void ShouldFireEventWhenGoingToNextPage()
+        {
+            var actualNewPage = 0;
+            var page = CreatePagedList(2, 3);
+            var cut = RenderComponent<BlogPostNavigation>(p => p.Add(param => param.CurrentPage, page.Object)
+                .Add(param => param.OnPageChanged, newPage => actualNewPage = newPage));
+
+            cut.Find("li:last-child a").Click();
+
+            actualNewPage.Should().Be(3);
+        }
+
+        [Fact]
+        public void ShouldFireEventWhenGoingToPreviousPage()
+        {
+            var actualNewPage = 0;
+            var page = CreatePagedList(2, 3);
+            var cut = RenderComponent<BlogPostNavigation>(p => p.Add(param => param.CurrentPage, page.Object)
+                .Add(param => param.OnPageChanged, newPage => actualNewPage = newPage));
+
+            cut.Find("li:first-child a").Click();
+
+            actualNewPage.Should().Be(1);
+        }
+
+        [Fact]
+        public void ShouldNotFireNextWhenOnLastPage()
+        {
+            var page = CreatePagedList(2, 2);
+            var cut = RenderComponent<BlogPostNavigation>(p =>
+                p.Add(param => param.CurrentPage, page.Object));
+
+            cut.Find("li:last-child").ClassList.Should().Contain("disabled");
+        }
+
+        [Fact]
+        public void ShouldNotFireNextWhenOnFirstPage()
+        {
+            var page = CreatePagedList(1, 2);
+            var cut = RenderComponent<BlogPostNavigation>(p =>
+                p.Add(param => param.CurrentPage, page.Object));
+
+            cut.Find("li:first-child").ClassList.Should().Contain("disabled");
+        }
+
+        private static Mock<IPagedList<BlogPost>> CreatePagedList(int currentPage, int pageCount)
+        {
+            var page = new Mock<IPagedList<BlogPost>>();
+            page.Setup(p => p.PageNumber).Returns(currentPage);
+            page.Setup(p => p.PageCount).Returns(pageCount);
+            page.Setup(p => p.IsFirstPage).Returns(currentPage == 1);
+            page.Setup(p => p.IsLastPage).Returns(currentPage == pageCount);
+
+            return page;
+        }
+    }
+}