1 files changed, 7 insertions, 0 deletions
diff --git a/activemodel/test/cases/error_test.rb b/activemodel/test/cases/error_test.rb
index d1193d123f..d74321fee5 100644
--- a/activemodel/test/cases/error_test.rb
+++ b/activemodel/test/cases/error_test.rb
@@ -190,4 +190,11 @@ class ErrorTest < ActiveModel::TestCase
     assert error != ActiveModel::Error.new(person, :title, foo: :bar)
     assert error != ActiveModel::Error.new(Person.new, :name, foo: :bar)
   end
+
+  test "comparing against different class would not raise error" do
+    person = Person.new
+    error = ActiveModel::Error.new(person, :name, foo: :bar)
+
+    assert error != person
+  end
 end