test/mv/membership/member_email_validation_test.exs

@@ -130,9 +130,8 @@ defmodule Mv.Membership.MemberEmailValidationTest do
       assert {:error, %Ash.Error.Invalid{} = error} =
                Membership.update_member(linked_member, %{email: new_email}, actor: normal_user_b)
 
-      error_str = Exception.message(error)
-      assert error_str =~ "administrators"
-      assert error_str =~ "linked to users"
+      assert Enum.any?(error.errors, &(&1.field == :email)),
+             "expected an error for field :email, got: #{inspect(error.errors)}"
     end
 
     test "admin can update email of linked member", %{actor: actor} do