diff --git a/SchengenVisaApi/VisaApiTests/Database/InMemoryContextProvider.cs b/SchengenVisaApi/VisaApiTests/Database/InMemoryContextProvider.cs
new file mode 100644
index 0000000..4d33789
--- /dev/null
+++ b/SchengenVisaApi/VisaApiTests/Database/InMemoryContextProvider.cs
@@ -0,0 +1,16 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Diagnostics;
+using DbContext = Infrastructure.Database.DbContext;
+
+namespace VisaApi.Database
+{
+    public static class InMemoryContextProvider
+    {
+        private static DbContextOptions<DbContext> opts = new DbContextOptionsBuilder<DbContext>()
+        .UseInMemoryDatabase("VisaApiDB")
+            .ConfigureWarnings(b => b.Ignore(InMemoryEventId.TransactionIgnoredWarning))
+            .Options;
+
+        public static DbContext GetDbContext() => new(opts);
+    }
+}
diff --git a/SchengenVisaApi/VisaApiTests/Database/Repositories/Generic/GenericRepositoryTests.cs b/SchengenVisaApi/VisaApiTests/Database/Repositories/Generic/GenericRepositoryTests.cs
new file mode 100644
index 0000000..7b4690e
--- /dev/null
+++ b/SchengenVisaApi/VisaApiTests/Database/Repositories/Generic/GenericRepositoryTests.cs
@@ -0,0 +1,85 @@
+using ApplicationLayer.GeneralExceptions;
+using Domains.Users;
+using FluentAssertions;
+using Infrastructure.Database;
+using Infrastructure.Database.Generic;
+
+namespace VisaApi.Database.Repositories.Generic;
+
+public class GenericRepositoryTests
+{
+    private static GenericRepository<User> GetRepository(DbContext context) => new TestGenericRepository(context, context);
+
+    /// <summary> Test for <see cref="GenericRepository{T}.GetAllAsync"/> method that should return empty collection if nothing added </summary>
+    [Fact]
+    public async Task GetAllForEmptyShouldReturnEmpty()
+    {
+        await using var context = InMemoryContextProvider.GetDbContext();
+        var repository = GetRepository(context);
+
+        var result = await repository.GetAllAsync(CancellationToken.None);
+
+        result.Should().BeEmpty();
+    }
+
+    /// <summary> Test for <see cref="GenericRepository{T}.GetAllAsync"/> method that should return collection with added entities </summary>
+    [Fact]
+    public async Task GetAllForNotEmptyShouldReturnEntities()
+    {
+        await using var context = InMemoryContextProvider.GetDbContext();
+        var repository = GetRepository(context);
+        User[] users =
+        [
+            new() { Email = "nasrudin@mail.ru", Password = "12345", Role = Role.Admin },
+            new() { Email = "bruh@mail.ru", Password = "123", Role = Role.Applicant }
+        ];
+        foreach (var user in users)
+        {
+            await repository.AddAsync(user, CancellationToken.None);
+        }
+
+        await context.SaveChangesAsync();
+
+        var result = await repository.GetAllAsync(CancellationToken.None);
+
+        result.Should().OnlyContain(user => users.Contains(user));
+    }
+
+    /// <summary> Test for <see cref="GenericRepository{T}.GetByIdAsync"/> method that should return existing entity </summary>
+    [Fact]
+    public async Task GetByIdForExistingShouldReturnEntity()
+    {
+        await using var context = InMemoryContextProvider.GetDbContext();
+        var repository = GetRepository(context);
+        var user = new User { Email = "nasrudin@mail.ru", Password = "12345", Role = Role.Admin };
+        await repository.AddAsync(user, CancellationToken.None);
+
+        await context.SaveChangesAsync();
+
+        var result = await repository.GetByIdAsync(user.Id, CancellationToken.None);
+
+        result.Should().Be(user);
+    }
+
+    /// <summary> Test for <see cref="GenericRepository{T}.GetByIdAsync"/> method that should throw exception for not found entity </summary>
+    [Fact]
+    public async Task GetByIdForNotExistingShouldThrow()
+    {
+        await using var context = InMemoryContextProvider.GetDbContext();
+        var repository = GetRepository(context);
+
+        await context.SaveChangesAsync();
+
+        EntityNotFoundByIdException<User>? result = null;
+        try
+        {
+            await repository.GetByIdAsync(Guid.NewGuid(), CancellationToken.None);
+        }
+        catch (Exception e)
+        {
+            result = e as EntityNotFoundByIdException<User>;
+        }
+
+        result.Should().NotBeNull();
+    }
+}
diff --git a/SchengenVisaApi/VisaApiTests/Database/Repositories/Generic/TestGenericRepository.cs b/SchengenVisaApi/VisaApiTests/Database/Repositories/Generic/TestGenericRepository.cs
new file mode 100644
index 0000000..c89a2e0
--- /dev/null
+++ b/SchengenVisaApi/VisaApiTests/Database/Repositories/Generic/TestGenericRepository.cs
@@ -0,0 +1,7 @@
+using Domains.Users;
+using Infrastructure.Database.Generic;
+
+namespace VisaApi.Database.Repositories.Generic
+{
+    public class TestGenericRepository(IGenericReader reader, IGenericWriter writer) : GenericRepository<User>(reader, writer);
+}
diff --git a/SchengenVisaApi/VisaApiTests/Database/Repositories/GenericRepositoryTests.cs b/SchengenVisaApi/VisaApiTests/Database/Repositories/GenericRepositoryTests.cs
deleted file mode 100644
index 28e7ccf..0000000
--- a/SchengenVisaApi/VisaApiTests/Database/Repositories/GenericRepositoryTests.cs
+++ /dev/null
@@ -1,9 +0,0 @@
-namespace VisaApi.Database.Repositories;
-
-public class GenericRepositoryTests
-{
-    [Fact]
-    public void Test1()
-    {
-    }
-}
diff --git a/SchengenVisaApi/VisaApiTests/Services/TestDateTimeProvider.cs b/SchengenVisaApi/VisaApiTests/Services/TestDateTimeProvider.cs
new file mode 100644
index 0000000..8241e0b
--- /dev/null
+++ b/SchengenVisaApi/VisaApiTests/Services/TestDateTimeProvider.cs
@@ -0,0 +1,9 @@
+using ApplicationLayer.InfrastructureServicesInterfaces;
+
+namespace VisaApi.Services
+{
+    public class TestDateTimeProvider : IDateTimeProvider
+    {
+        public DateTime Now() => DateTime.Now;
+    }
+}
diff --git a/SchengenVisaApi/VisaApiTests/VisaApiTests.csproj b/SchengenVisaApi/VisaApiTests/VisaApiTests.csproj
index 91e24fa..0be6f2d 100644
--- a/SchengenVisaApi/VisaApiTests/VisaApiTests.csproj
+++ b/SchengenVisaApi/VisaApiTests/VisaApiTests.csproj
@@ -11,6 +11,8 @@
     </PropertyGroup>
 
     <ItemGroup>
+        <PackageReference Include="FluentAssertions" Version="6.12.1" />
+        <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="8.0.8" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.0"/>
         <PackageReference Include="xunit" Version="2.4.2"/>
         <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">