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+# How to test Blazor components in ABP
+
+## Source Code
+
+You can find the source of the example solution used in this article [here](https://github.com/abpframework/abp-samples/tree/master/BlazorPageUniTest).
+
+
+In this article I will use [bUnit](https://github.com/bUnit-dev/bUnit) for a simple test of the Blazor component.
+
+## Getting Started
+
+Use ABP CLI to create a blazor app, then add `BookStore.Blazor.Tests` unit test project to the solution.
+
+`abp new BookStore -t app -u blazor`
+
+Add [bUnit](https://github.com/bUnit-dev/bUnit)  package and `ProjectReference` and to the test project.
+
+```xml
+<PackageReference Include="bunit" Version="1.2.49" />
+
+<ProjectReference Include="..\..\src\BookStore.Blazor\BookStore.Blazor.csproj" />
+<ProjectReference Include="..\BookStore.EntityFrameworkCore.Tests\BookStore.EntityFrameworkCore.Tests.csproj" />
+```
+
+Create `BookStoreBlazorTestModule` and depends on `AbpAspNetCoreComponentsModule` and `BookStoreEntityFrameworkCoreTestModule`.
+
+```cs
+[DependsOn(
+    typeof(AbpAspNetCoreComponentsModule),
+    typeof(BookStoreEntityFrameworkCoreTestModule)
+)]
+public class BookStoreBlazorTestModule : AbpModule
+{
+
+}
+```
+
+Create `BookStoreBlazorTestBase` class and add `CreateTestContext` method. The `CreateTestContext` have key code.
+
+It use ABP's `ServiceProvider` as an fallback `ServiceProvider` and add all ABP's services to the `TestContext`.
+
+```cs
+public abstract class BookStoreBlazorTestBase : BookStoreTestBase<BookStoreBlazorTestModule>
+{
+    protected virtual TestContext CreateTestContext()
+    {
+        var testContext = new TestContext();
+        testContext.Services.AddFallbackServiceProvider(ServiceProvider);
+        foreach (var service in ServiceProvider.GetRequiredService<IAbpApplicationWithExternalServiceProvider>().Services)
+        {
+            testContext.Services.Add(service);
+        }
+        testContext.Services.AddBlazorise().AddBootstrap5Providers().AddFontAwesomeIcons();
+        return testContext;
+    }
+}
+```
+
+Finally we add an `Index_Tests` class to test the `Index` component.
+
+```cs
+public class Index_Tests : BookStoreBlazorTestBase
+{
+    [Fact]
+    public void Index_Test()
+    {
+        using (var ctx = CreateTestContext())
+        {
+            // Act
+            var cut = ctx.RenderComponent<BookStore.Blazor.Pages.Index>();
+
+            // Assert
+            cut.Find(".lead").InnerHtml.Contains("Welcome to the application. This is a startup project based on the ABP framework. For more information, visit abp.io.").ShouldBeTrue();
+
+            cut.Find("#username").InnerHtml.Contains("Welcome admin").ShouldBeTrue();
+        }
+    }
+}
+```
+
+## Reference document
+
+https://github.com/bUnit-dev/bUnit
+
+https://docs.microsoft.com/en-us/aspnet/core/blazor/test