1 files changed, 28 insertions, 0 deletions
diff --git a/activerecord/test/cases/adapters/postgresql/enum_test.rb b/activerecord/test/cases/adapters/postgresql/enum_test.rb
index bf8dbd6c3f..a9a2901436 100644
--- a/activerecord/test/cases/adapters/postgresql/enum_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/enum_test.rb
@@ -23,6 +23,8 @@ class PostgresqlEnumTest < ActiveRecord::TestCase
         t.column :current_mood, :mood
       end
     end
+    # reload type map after creating the enum type
+    @connection.send(:reload_type_map)
   end
 
   def test_enum_mapping
@@ -35,4 +37,30 @@ class PostgresqlEnumTest < ActiveRecord::TestCase
 
     assert_equal "happy", enum.reload.current_mood
   end
+
+  def test_invalid_enum_update
+    @connection.execute "INSERT INTO postgresql_enums VALUES (1, 'sad');"
+    enum = PostgresqlEnum.first
+    enum.current_mood = "angry"
+
+    assert_raise ActiveRecord::StatementInvalid do
+      enum.save
+    end
+  end
+
+  def test_no_oid_warning
+    @connection.execute "INSERT INTO postgresql_enums VALUES (1, 'sad');"
+    stderr_output = capture(:stderr) {
+        enum = PostgresqlEnum.first
+    }
+
+    assert stderr_output.blank?
+  end
+
+  def test_enum_type_cast
+    enum = PostgresqlEnum.new
+    enum.current_mood = :happy
+
+    assert_equal "happy", enum.current_mood
+  end
 end