основное по тестам готово

backend/tests/Tnsu.ApprovalRoute.IntegrationTests/Infrastructure/TestServiceProviderFactory.cs

@@ -0,0 +1,29 @@
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Tnsu.ApprovalRoute.Application;
+using Tnsu.ApprovalRoute.Application.Common.Interfaces;
+using Tnsu.ApprovalRoute.Infrastructure;
+
+namespace Tnsu.ApprovalRoute.IntegrationTests.Infrastructure;
+
+// Собирает такой же DI-контейнер, как реальное приложение (те же extension-методы, что в Program.cs),
+// но с тестовой БД и тестовым ICurrentUser вместо HttpContext-based реализации.
+internal static class TestServiceProviderFactory
+{
+    public static ServiceProvider Build(string connectionString, string? currentUserEmail = "initiator@tnsu.kz")
+    {
+        var configuration = new ConfigurationBuilder()
+            .AddInMemoryCollection(new Dictionary<string, string?>
+            {
+                ["ConnectionStrings:Postgres"] = connectionString
+            })
+            .Build();
+
+        var services = new ServiceCollection();
+        services.AddApprovalRouteInfrastructure(configuration);
+        services.AddApprovalRouteApplication();
+        services.AddSingleton<ICurrentUser>(new TestCurrentUser(currentUserEmail));
+
+        return services.BuildServiceProvider();
+    }
+}