rails--rails/railties/test/generators/session_migration_generator_test.rb

require 'abstract_unit'
require 'generators/generators_test_helper'
require 'generators/rails/session_migration/session_migration_generator'

module ActiveRecord 
  module SessionStore
    class Session
      class << self
        attr_accessor :table_name
      end
    end
  end
end

class SessionMigrationGeneratorTest < GeneratorsTestCase

  def test_session_migration_with_default_name
    run_generator
    assert_migration "db/migrate/add_sessions_table.rb", /class AddSessionsTable < ActiveRecord::Migration/
  end

  def test_session_migration_with_given_name
    run_generator ["create_session_table"]
    assert_migration "db/migrate/create_session_table.rb", /class CreateSessionTable < ActiveRecord::Migration/
  end

  def test_session_migration_with_custom_table_name
    ActiveRecord::SessionStore::Session.table_name = "custom_table_name"
    run_generator
    assert_migration "db/migrate/add_sessions_table.rb" do |migration|
      assert_match /class AddSessionsTable < ActiveRecord::Migration/, migration
      assert_match /create_table :custom_table_name/, migration
    end
  end
  protected

    def run_generator(args=[])
      silence(:stdout) { Rails::Generators::SessionMigrationGenerator.start args, :destination_root => destination_root }
    end

end