diff --git a/DigitalData.Core.Abstractions/Infrastructure/Extensions.cs b/DigitalData.Core.Abstractions/Infrastructure/Extensions.cs
new file mode 100644
index 0000000..abd0742
--- /dev/null
+++ b/DigitalData.Core.Abstractions/Infrastructure/Extensions.cs
@@ -0,0 +1,18 @@
+using System.Linq.Expressions;
+
+namespace DigitalData.Core.Abstractions.Infrastructure;
+
+public static class Extensions
+{
+    public static async Task<TEntity?> ReadFirstOrDefaultAsync<TEntity>(this IRepository<TEntity> repository, Expression<Func<TEntity, bool>>? expression = null)
+        => (await repository.ReadAsync(expression)).FirstOrDefault();
+
+    public static async Task<TEntity> ReadFirstAsync<TEntity>(this IRepository<TEntity> repository, Expression<Func<TEntity, bool>>? expression = null)
+        => (await repository.ReadAsync(expression)).First();
+
+    public static async Task<TEntity?> ReadSingleOrDefaultAsync<TEntity>(this IRepository<TEntity> repository, Expression<Func<TEntity, bool>>? expression = null)
+        => (await repository.ReadAsync(expression)).SingleOrDefault();
+
+    public static async Task<TEntity> ReadSingleAsync<TEntity>(this IRepository<TEntity> repository, Expression<Func<TEntity, bool>>? expression = null)
+        => (await repository.ReadAsync(expression)).Single();
+}
diff --git a/DigitalData.Core.Abstractions/Infrastructure/IRepository.cs b/DigitalData.Core.Abstractions/Infrastructure/IRepository.cs
index 21514d5..750df26 100644
--- a/DigitalData.Core.Abstractions/Infrastructure/IRepository.cs
+++ b/DigitalData.Core.Abstractions/Infrastructure/IRepository.cs
@@ -17,5 +17,4 @@ public interface IRepository<TEntity>
     public Task UpdateAsync<TDto>(TDto dto, Expression<Func<TEntity, bool>> expression, CancellationToken ct = default);
 
     public Task DeleteAsync<TDto>(Expression<Func<TEntity, bool>> expression, CancellationToken ct = default);
-    Task ReadAsync(Core.Tests.Mock.User user);
 }