diff --git a/XUnitDIStudy.Test/ControllerTest.cs b/XUnitDIStudy.Test/ControllerTest.cs
new file mode 100644
index 0000000..6cfdbb0
--- /dev/null
+++ b/XUnitDIStudy.Test/ControllerTest.cs
@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Microsoft.AspNetCore.Mvc.Testing;
+using Microsoft.AspNetCore.Mvc.Testing.Handlers;
+using Microsoft.AspNetCore.TestHost;
+
+using Xunit;
+
+using XUnitDIStudy.Model;
+
+namespace XUnitDIStudy.Test
+{
+    public class ControllerTest:IClassFixture<WebApplicationFactory<WebApp.Startup>>
+    {
+        private readonly WebApplicationFactory<WebApp.Startup> _factory;
+
+        public ControllerTest(WebApplicationFactory<WebApp.Startup> factory)
+        {
+            _factory = factory;
+        }
+
+
+        [Fact]
+        public async Task Test()
+        {
+            // Arrange
+            var client = _factory.CreateClient();
+
+            // Act
+            var response = await client.GetAsync("/Default/GetAll");
+
+            // Assert
+            response.EnsureSuccessStatusCode(); // Status Code 200-299
+
+            List<Student> result = System.Text.Json.JsonSerializer.Deserialize<List<Student>>(response.Content.ReadAsStringAsync().Result);
+
+            Assert.NotNull(result);
+            Assert.True(result.Count>0);
+        }
+    }
+}
diff --git a/XUnitDIStudy.Test/XUnitDIStudy.Test.csproj b/XUnitDIStudy.Test/XUnitDIStudy.Test.csproj
index afd730a..d769e53 100644
--- a/XUnitDIStudy.Test/XUnitDIStudy.Test.csproj
+++ b/XUnitDIStudy.Test/XUnitDIStudy.Test.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net5.0</TargetFramework>
@@ -7,7 +7,9 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="AngleSharp" Version="0.14.0" />
     <PackageReference Include="FluentAssertions" Version="5.10.3" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="5.0.1" />
     <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="5.0.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.3" />
     <PackageReference Include="xunit" Version="2.4.1" />
diff --git a/XUnitDIStudy.WebApp/Controllers/DefaultController.cs b/XUnitDIStudy.WebApp/Controllers/DefaultController.cs
index 6a8f8fe..d11b376 100644
--- a/XUnitDIStudy.WebApp/Controllers/DefaultController.cs
+++ b/XUnitDIStudy.WebApp/Controllers/DefaultController.cs
@@ -19,9 +19,9 @@ namespace XUnitDIStudy.WebApp.Controllers
     public class DefaultController : ControllerBase
     {
         private readonly ILogger<DefaultController> _logger;
-        private readonly StudentService _studentService;
+        private readonly IStudentService _studentService;
 
-        public DefaultController(ILogger<DefaultController> logger, StudentService studentService)
+        public DefaultController(ILogger<DefaultController> logger, IStudentService studentService)
         {
             _logger = logger;
             _studentService = studentService;
diff --git a/XUnitDIStudy.WebApp/Startup.cs b/XUnitDIStudy.WebApp/Startup.cs
index aff4516..d83756e 100644
--- a/XUnitDIStudy.WebApp/Startup.cs
+++ b/XUnitDIStudy.WebApp/Startup.cs
@@ -12,6 +12,8 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 
+using XUnitDIStudy.Service;
+
 namespace XUnitDIStudy.WebApp
 {
     public class Startup
@@ -26,6 +28,9 @@ namespace XUnitDIStudy.WebApp
         public void ConfigureServices(IServiceCollection services)
         {
             services.AddControllers();
+
+            services.AddScoped<IStudentService, StudentService>();
+
             services.AddSwaggerGen(c =>
             {
                 c.SwaggerDoc("v1", new OpenApiInfo { Title = "XUnitDIStudy.WebApp", Version = "v1" });