run_generator

Runs the generator configured for this class. The first argument is an array like command line arguments:

  class AppGeneratorTest < Rails::Generators::TestCase
    tests AppGenerator
    destination File.expand_path("../tmp", File.dirname(__FILE__))
    teardown :cleanup_destination_root

    test "database.yml is not created when skipping Active Record" do
      run_generator %w(myapp --skip-active-record)
      assert_no_file "config/database.yml"
    end
  end

You can provide a configuration hash as second argument. This method returns the output printed by the generator.