diff --git a/SurveyBackend/SurveyBackend.API/Controllers/TestController.cs b/SurveyBackend/SurveyBackend.API/Controllers/TestController.cs
index f962090..0056728 100644
--- a/SurveyBackend/SurveyBackend.API/Controllers/TestController.cs
+++ b/SurveyBackend/SurveyBackend.API/Controllers/TestController.cs
@@ -1,6 +1,23 @@
+using Microsoft.AspNetCore.Mvc;
+using SurveyLib.Core.Services;
+
 namespace SurveyBackend.Controllers;
 
-public class TestController
+[ApiController]
+[Route("test")]
+public class TestController : ControllerBase
 {
-    
+    private readonly ISurveyService _surveyService;
+
+    public TestController(ISurveyService surveyService)
+    {
+        _surveyService = surveyService;
+    }
+
+    [HttpGet]
+    public async Task<IActionResult> Get()
+    {
+        var result = await _surveyService.GetSurveysAsync();
+        return Ok(result);
+    }
 }
\ No newline at end of file
diff --git a/SurveyBackend/SurveyBackend.API/Program.cs b/SurveyBackend/SurveyBackend.API/Program.cs
index 23fd2d7..2aa90b2 100644
--- a/SurveyBackend/SurveyBackend.API/Program.cs
+++ b/SurveyBackend/SurveyBackend.API/Program.cs
@@ -4,6 +4,11 @@ using Microsoft.EntityFrameworkCore;
 using Microsoft.IdentityModel.Tokens;
 using SurveyBackend.Infrastructure;
 using SurveyBackend.Infrastructure.Data;
+using SurveyLib.Core.Repositories;
+using SurveyLib.Core.Services;
+using SurveyLib.Infrastructure.EFCore.Data;
+using SurveyLib.Infrastructure.EFCore.Repositories;
+using SurveyLib.Infrastructure.EFCore.Services;
 
 namespace SurveyBackend;
 
@@ -18,9 +23,13 @@ public class Program
         builder.Services.AddAuthorization();
 
         builder.Services.AddDbContext<ApplicationDbContext>(options =>
-        {
-            options.UseSqlite(builder.Configuration.GetConnectionString("DefaultConnection"));
-        });
+            options.UseSqlite(builder.Configuration.GetConnectionString("DefaultConnection")));
+
+        builder.Services.AddScoped<SurveyDbContext>(provider => provider.GetRequiredService<ApplicationDbContext>());
+
+        builder.Services.AddScoped<ISurveyRepository, SurveyRepository>();
+        builder.Services.AddScoped<ISurveyService, SurveyService>();
+
 
         builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
             .AddJwtBearer(options =>
diff --git a/SurveyBackend/SurveyBackend.Infrastructure/Data/ApplicationDbContext.cs b/SurveyBackend/SurveyBackend.Infrastructure/Data/ApplicationDbContext.cs
index fb500db..66a0468 100644
--- a/SurveyBackend/SurveyBackend.Infrastructure/Data/ApplicationDbContext.cs
+++ b/SurveyBackend/SurveyBackend.Infrastructure/Data/ApplicationDbContext.cs
@@ -1,16 +1,42 @@
-using Microsoft.AspNetCore.Identity;
-using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore;
 using SurveyBackend.Core.Models;
+using SurveyLib.Core.Models;
+using SurveyLib.Infrastructure.EFCore.Data;
 
 namespace SurveyBackend.Infrastructure.Data;
 
-public class ApplicationDbContext : DbContext
+public class ApplicationDbContext : SurveyDbContext
 {
     public DbSet<User> Users { get; set; }
     public DbSet<Group> Groups { get; set; }
 
-    public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options) : base(options)
+    public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
+        : base(options)
     {
+        
+    }
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        // Вызов конфигурации базового контекста для моделей библиотеки
+        base.OnModelCreating(modelBuilder);
+
+        // Здесь можно описывать конфигурацию дополнительных сущностей и связи между моделями библиотеки и моделями приложения.
+        // Например, если Survey должен иметь связь с User (скажем, владелец опроса):
+
+        // Допустим, Survey не имеет в исходной модели свойства UserId.
+        // Можно использовать теневой ключ, или если ты готов расширить модель Survey в бэкенде.
+        // Пример с теневым ключом:
+        // modelBuilder.Entity<Survey>()
+        //     .HasOne<User>()                   // тип связи: один пользователь
+        //     .WithMany()                       // например, пользователь может владеть несколькими опросами
+        //     .HasForeignKey("OwnerId");        // теневой ключ, который не прописан в модели Survey
+
+        // Или, если расширить Survey:
+        // public int? OwnerId { get; set; }
+        // modelBuilder.Entity<Survey>()
+        //     .HasOne<User>()
+        //     .WithMany(u => u.Surveys)
+        //     .HasForeignKey(s => s.OwnerId);
     }
 }
\ No newline at end of file
diff --git a/SurveyBackend/SurveyBackend.Infrastructure/SurveyBackend.Infrastructure.csproj b/SurveyBackend/SurveyBackend.Infrastructure/SurveyBackend.Infrastructure.csproj
index ce7dbfc..8d6e23a 100644
--- a/SurveyBackend/SurveyBackend.Infrastructure/SurveyBackend.Infrastructure.csproj
+++ b/SurveyBackend/SurveyBackend.Infrastructure/SurveyBackend.Infrastructure.csproj
@@ -12,6 +12,7 @@
     </ItemGroup>
 
     <ItemGroup>
+      <ProjectReference Include="..\..\SurveyLib\SurveyLib.Infrastructure.EFCore\SurveyLib.Infrastructure.EFCore.csproj" />
       <ProjectReference Include="..\SurveyBackend.Core\SurveyBackend.Core.csproj" />
     </ItemGroup>
 
diff --git a/SurveyBackend/SurveyBackend.sln b/SurveyBackend/SurveyBackend.sln
index c79d7d1..bbfd9ab 100644
--- a/SurveyBackend/SurveyBackend.sln
+++ b/SurveyBackend/SurveyBackend.sln
@@ -6,6 +6,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SurveyBackend.Core", "Surve
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SurveyBackend.Infrastructure", "SurveyBackend.Infrastructure\SurveyBackend.Infrastructure.csproj", "{4006471D-9F65-4AD6-852B-88A1211B49F4}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SurveyLib.Infrastructure.EFCore", "..\SurveyLib\SurveyLib.Infrastructure.EFCore\SurveyLib.Infrastructure.EFCore.csproj", "{CD9FE310-CDD1-4661-AB41-E606D35E1694}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SurveyLib.Core", "..\SurveyLib\SurveyLib.Core\SurveyLib.Core.csproj", "{C17C405B-37CF-48E6-AA44-44B878F4DE56}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -24,5 +28,13 @@ Global
 		{4006471D-9F65-4AD6-852B-88A1211B49F4}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{4006471D-9F65-4AD6-852B-88A1211B49F4}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{4006471D-9F65-4AD6-852B-88A1211B49F4}.Release|Any CPU.Build.0 = Release|Any CPU
+		{CD9FE310-CDD1-4661-AB41-E606D35E1694}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CD9FE310-CDD1-4661-AB41-E606D35E1694}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CD9FE310-CDD1-4661-AB41-E606D35E1694}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CD9FE310-CDD1-4661-AB41-E606D35E1694}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C17C405B-37CF-48E6-AA44-44B878F4DE56}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C17C405B-37CF-48E6-AA44-44B878F4DE56}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C17C405B-37CF-48E6-AA44-44B878F4DE56}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C17C405B-37CF-48E6-AA44-44B878F4DE56}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal