Add user creation test to DbRepositoryTests

This commit introduces a new test method `CreateAsync_ShouldPersistUser` in `DbRepositoryTests.cs`. The method tests the asynchronous creation of a user in the repository using the `Faker` library to generate user data. It asserts that no exceptions are thrown during the creation process. Additionally, the using directives have been updated to include `DigitalData.Core.Abstractions.Infrastructure`.

DigitalData.Core.Tests/Infrastructure/DbRepositoryTests.cs

@@ -1,12 +1,13 @@
 namespace DigitalData.Core.Tests.Infrastructure;
 
-using Bogus;
 using DigitalData.Core.Infrastructure;
 using DigitalData.Core.Tests.Mock;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using System.Reflection;
+using DigitalData.Core.Tests.Mock;
+using DigitalData.Core.Abstractions.Infrastructure;
 
 public class DbRepositoryTests
 {
@@ -32,4 +33,16 @@ public class DbRepositoryTests
         if (_host is IDisposable disposableHost)
             disposableHost.Dispose();
     }
+
+    [Test]
+    public void CreateAsync_ShouldPersistUser()
+    {
+        // Arrange
+        var faker = Fake.CreateUserFaker();
+        var user = faker.Generate();
+        var repo = _host.Services.GetRequiredService<IRepository<User>>();
+
+        // Act & Assert
+        Assert.DoesNotThrowAsync(async () => await repo.CreateAsync(user));
+    }
 }