1 files changed, 7 insertions, 0 deletions
diff --git a/activerecord/test/cases/adapter_test.rb b/activerecord/test/cases/adapter_test.rb
index 04770646b2..8688fbee49 100644
--- a/activerecord/test/cases/adapter_test.rb
+++ b/activerecord/test/cases/adapter_test.rb
@@ -130,4 +130,11 @@ class AdapterTest < ActiveRecord::TestCase
       assert_equal " LIMIT 1,7 OFFSET 7", @connection.add_limit_offset!("", :limit=>sql_inject, :offset=>7)
     end
   end
+
+  def test_uniqueness_violations_are_translated_to_specific_exception
+    @connection.execute "INSERT INTO subscribers(nick) VALUES('me')"
+    assert_raises(ActiveRecord::RecordNotUnique) do
+      @connection.execute "INSERT INTO subscribers(nick) VALUES('me')"
+    end
+  end
 end