Properly handle ee migration specs

rubocop/cop/migration/update_column_in_batches.rb

@@ -28,7 +28,7 @@ module RuboCop
           source_name = node.location.expression.source_buffer.name
           path = Pathname.new(source_name).relative_path_from(rails_root)
           dirname = File.dirname(path)
-            .sub(%r{\Adb/(migrate|post_migrate)}, 'spec/migrations')
+            .sub(%r{db/(migrate|post_migrate)}, 'spec/migrations')
           filename = File.basename(source_name, '.rb').sub(/\A\d+_/, '')
 
           File.join(dirname, "#{filename}_spec.rb")

spec/rubocop/cop/migration/update_column_in_batches_spec.rb

@@ -93,4 +93,22 @@ describe RuboCop::Cop::Migration::UpdateColumnInBatches do
     it_behaves_like 'a migration file with no spec file'
     it_behaves_like 'a migration file with a spec file'
   end
+
+  context 'EE migrations' do
+    let(:spec_filepath) { tmp_rails_root.join('ee', 'spec', 'migrations', 'my_super_migration_spec.rb') }
+
+    context 'in a migration' do
+      let(:migration_filepath) { tmp_rails_root.join('ee', 'db', 'migrate', '20121220064453_my_super_migration.rb') }
+
+      it_behaves_like 'a migration file with no spec file'
+      it_behaves_like 'a migration file with a spec file'
+    end
+
+    context 'in a post migration' do
+      let(:migration_filepath) { tmp_rails_root.join('ee', 'db', 'post_migrate', '20121220064453_my_super_migration.rb') }
+
+      it_behaves_like 'a migration file with no spec file'
+      it_behaves_like 'a migration file with a spec file'
+    end
+  end
 end