--- /dev/null
+# frozen_string_literal: true
+
+# Redmine - project management software
+# Copyright (C) 2006-2023 Jean-Philippe Lang
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+require_relative '../test_helper'
+require_relative '../../lib/generators/redmine_plugin_migration/redmine_plugin_migration_generator'
+
+class MigrationGeneratorTest < Rails::Generators::TestCase
+ TMP_DIR = Rails.root / 'tmp/test/generators'
+
+ tests RedminePluginMigrationGenerator
+ destination TMP_DIR
+ setup :prepare_destination
+
+ setup do
+ @plugin_directory = Redmine::Plugin.directory
+ Redmine::Plugin.directory = TMP_DIR
+ end
+
+ teardown do
+ Redmine::Plugin.directory = @plugin_directory
+ end
+
+ def test_migration_file_name_is_snake_case
+ g = generator ['MigrationDemo', 'AddMigrationTable']
+
+ assert_name g, 'AddMigrationTable', :migration
+
+ capture(:stdout) do
+ g.create_migration_file
+ end
+
+ path_names = (Redmine::Plugin.directory / 'migration_demo/db/migrate')
+ .glob('*_add_migration_table.rb')
+
+ assert_equal 1, path_names.count
+ end
+
+ private
+
+ def assert_name(generator, value, method)
+ assert_equal value, generator.send(method)
+ end
+end