return handler error

mediatr.go

@@ -139,14 +139,16 @@ func Send[TRequest any, TResponse any](ctx context.Context, request TRequest) (T
 		response, err := v()
 
 		if err != nil {
-			return *new(TResponse), errors.Wrap(err, "error handling request")
+			// error handling request
+			return *new(TResponse), err
 		}
 
 		return response.(TResponse), nil
 	} else {
 		res, err := handlerValue.Handle(ctx, request)
 		if err != nil {
-			return *new(TResponse), errors.Wrap(err, "error handling request")
+			// error handling request
+			return *new(TResponse), err
 		}
 
 		response = res

mediatr_test.go

@@ -88,14 +88,13 @@ func (t *mediatorTests) Test_Send_Should_Throw_Error_If_No_Handler_Registered()
 
 func (t *mediatorTests) Test_Send_Should_Return_Error_If_Handler_Returns_Error() {
 	defer cleanup()
-	expectedErr := "error handling request"
 	handler3 := &RequestTestHandler3{}
 	errRegister := RegisterRequestHandler[*RequestTest2, *ResponseTest2](handler3)
 	if errRegister != nil {
 		t.Error(errRegister)
 	}
 	_, err := Send[*RequestTest2, *ResponseTest2](context.Background(), &RequestTest2{Data: "test"})
-	assert.Containsf(t, err.Error(), expectedErr, "expected error containing %q, got %s", expectedErr, err)
+	assert.NotNil(t, err)
 }
 
 func (t *mediatorTests) Test_Send_Should_Dispatch_Request_To_Handler_And_Get_Response_Without_Pipeline() {