Added Tests for Pagination / Index

Author: linkdotnet

LinkDotNet.Blog.IntegrationTests/SqlDatabaseTestBase.cs

@@ -19,9 +19,9 @@ protected SqlDatabaseTestBase()
             BlogPostRepository = new BlogPostRepository(new BlogPostContext(options));
         }
 
-        protected BlogPostRepository BlogPostRepository { get; private set; }
+        protected BlogPostRepository BlogPostRepository { get; }
 
-        protected BlogPostContext DbContext { get; private set; }
+        protected BlogPostContext DbContext { get; }
 
         public Task InitializeAsync()
         {

LinkDotNet.Blog.IntegrationTests/Web/Pages/IndexTests.cs

@@ -53,6 +53,54 @@ public async Task ShouldOnlyShowPublishedPosts()
             blogPosts[0].Find(".description h1").InnerHtml.Should().Be("Published");
         }
 
+        [Fact]
+        public async Task ShouldOnlyLoadTenEntities()
+        {
+            await CreatePublishedBlogPosts(11);
+            using var ctx = new TestContext();
+            ctx.JSInterop.Mode = JSRuntimeMode.Loose;
+            ctx.Services.AddScoped<IRepository>(_ => BlogPostRepository);
+            ctx.Services.AddScoped(_ => CreateSampleAppConfiguration());
+            var cut = ctx.RenderComponent<Index>();
+
+            var blogPosts = cut.FindComponents<ShortBlogPost>();
+
+            blogPosts.Count.Should().Be(10);
+        }
+
+        [Fact]
+        public async Task ShouldLoadNextBatchOnClick()
+        {
+            await CreatePublishedBlogPosts(11);
+            using var ctx = new TestContext();
+            ctx.JSInterop.Mode = JSRuntimeMode.Loose;
+            ctx.Services.AddScoped<IRepository>(_ => BlogPostRepository);
+            ctx.Services.AddScoped(_ => CreateSampleAppConfiguration());
+            var cut = ctx.RenderComponent<Index>();
+
+            cut.FindComponent<BlogPostNavigation>().Find("li:last-child a").Click();
+
+            var blogPosts = cut.FindComponents<ShortBlogPost>();
+            blogPosts.Count.Should().Be(1);
+        }
+
+        [Fact]
+        public async Task ShouldLoadPreviousBatchOnClick()
+        {
+            await CreatePublishedBlogPosts(11);
+            using var ctx = new TestContext();
+            ctx.JSInterop.Mode = JSRuntimeMode.Loose;
+            ctx.Services.AddScoped<IRepository>(_ => BlogPostRepository);
+            ctx.Services.AddScoped(_ => CreateSampleAppConfiguration());
+            var cut = ctx.RenderComponent<Index>();
+            cut.FindComponent<BlogPostNavigation>().Find("li:last-child a").Click();
+
+            cut.FindComponent<BlogPostNavigation>().Find("li:first-child a").Click();
+
+            var blogPosts = cut.FindComponents<ShortBlogPost>();
+            blogPosts.Count.Should().Be(1);
+        }
+
         private static AppConfiguration CreateSampleAppConfiguration()
         {
             return new()
@@ -66,5 +114,14 @@ private static AppConfiguration CreateSampleAppConfiguration()
                 },
             };
         }
+
+        private async Task CreatePublishedBlogPosts(int amount)
+        {
+            for (var i = 0; i < amount; i++)
+            {
+                var blogPost = new BlogPostBuilder().IsPublished().Build();
+                await BlogPostRepository.StoreAsync(blogPost);
+            }
+        }
     }
 }

LinkDotNet.Blog.Web/Pages/Index.razor

@@ -26,7 +26,7 @@
 
     protected override async Task OnInitializedAsync()
     {
-        _currentPage = await _repository.GetAllAsync(p => p.IsPublished, b => b.UpdatedDate, pageSize: 3);
+        _currentPage = await _repository.GetAllAsync(p => p.IsPublished, b => b.UpdatedDate, pageSize: 10);
     }
 
     private string GetAbsolutePreviewImageUrl()
@@ -48,7 +48,7 @@
 
     private async Task GetPage(int newPage)
     {
-        _currentPage = await _repository.GetAllAsync(p => p.IsPublished, b => b.UpdatedDate, pageSize: 3, page: 
+        _currentPage = await _repository.GetAllAsync(p => p.IsPublished, b => b.UpdatedDate, pageSize: 10, page: 
         newPage);
     }
 }

LinkDotNet.Blog.Web/Pages/SearchByTag.razor

@@ -18,6 +18,9 @@
     protected override async Task OnInitializedAsync()
     {
         Tag = Uri.UnescapeDataString(Tag);
-        _blogPosts = (await _repository.GetAllAsync(b => b.Tags.Any(t => t.Content == Tag), b => b.UpdatedDate)).ToList();
+        _blogPosts = (await _repository.GetAllAsync(
+            b => b.Tags.Any(t => t.Content == Tag), 
+            b => b.UpdatedDate))
+            .ToList();
     }
 }