Добавьте файлы проекта.

Data/Data.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Services\Services.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Folder Include="Models\" />
+  </ItemGroup>
+
+</Project>

Data/Extentions/ServiceCollectionExtentions.cs

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+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.DependencyInjection.Extensions;
+using Services.Tickets;
+
+namespace Data.Extentions;
+
+public static class ServiceCollectionExtentions
+{
+    public static void TyAddFakeTicketRepository(this IServiceCollection services)
+    {
+        services.TryAddScoped<ITicketRepository, FakeTicketRepository>();
+    }
+}

Data/FakeTicketRepository.cs

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+using Services.Tickets;
+using Services.Tickets.Models;
+
+namespace Data;
+
+internal class FakeTicketRepository : ITicketRepository
+{
+    private readonly List<LotteryTicket> _lotteryTickets = new List<LotteryTicket>();
+    public Task<long> AddNewTicket(LotteryTicket ticket)
+    {
+        var id =(long)Random.Shared.Next(1, 100);
+        ticket.Id = id;
+        _lotteryTickets.Add(ticket);
+        return Task.FromResult(id);
+    }
+
+    public Task<List<LotteryTicket>> GetAllTickets()
+    {
+        return Task.FromResult(_lotteryTickets);
+    }
+}