rails--rails/railties/test/application/runner_test.rb

require 'isolation/abstract_unit'
require 'env_helpers'

module ApplicationTests
  class RunnerTest < ActiveSupport::TestCase
    include ActiveSupport::Testing::Isolation
    include EnvHelpers

    def setup
      build_app
      boot_rails

      # Lets create a model so we have something to play with
      app_file "app/models/user.rb", <<-MODEL
      class User
        def self.count
          42
        end
      end
      MODEL
    end

    def teardown
      teardown_app
    end

    def test_should_include_runner_in_shebang_line_in_help_without_option
      assert_match "/rails runner", Dir.chdir(app_path) { `bin/rails runner` }
    end

    def test_should_include_runner_in_shebang_line_in_help
      assert_match "/rails runner", Dir.chdir(app_path) { `bin/rails runner --help` }
    end

    def test_should_run_ruby_statement
      assert_match "42", Dir.chdir(app_path) { `bin/rails runner "puts User.count"` }
    end

    def test_should_run_file
      app_file "bin/count_users.rb", <<-SCRIPT
      puts User.count
      SCRIPT

      assert_match "42", Dir.chdir(app_path) { `bin/rails runner "bin/count_users.rb"` }
    end

    def test_should_set_dollar_0_to_file
      app_file "bin/dollar0.rb", <<-SCRIPT
      puts $0
      SCRIPT

      assert_match "bin/dollar0.rb", Dir.chdir(app_path) { `bin/rails runner "bin/dollar0.rb"` }
    end

    def test_should_set_dollar_program_name_to_file
      app_file "bin/program_name.rb", <<-SCRIPT
      puts $PROGRAM_NAME
      SCRIPT

      assert_match "bin/program_name.rb", Dir.chdir(app_path) { `bin/rails runner "bin/program_name.rb"` }
    end

    def test_with_hook
      add_to_config <<-RUBY
        runner do |app|
          app.config.ran = true
        end
      RUBY

      assert_match "true", Dir.chdir(app_path) { `bin/rails runner "puts Rails.application.config.ran"` }
    end

    def test_default_environment
      assert_match "development", Dir.chdir(app_path) { `bin/rails runner "puts Rails.env"` }
    end

    def test_runner_detects_syntax_errors
      Dir.chdir(app_path) { `bin/rails runner "puts 'hello world" 2>&1` }
      refute $?.success? 
    end

    def test_runner_detects_bad_script_name
      Dir.chdir(app_path) { `bin/rails runner "iuiqwiourowe" 2>&1` }
      refute $?.success? 
    end

    def test_environment_with_rails_env
      with_rails_env "production" do
        assert_match "production", Dir.chdir(app_path) { `bin/rails runner "puts Rails.env"` }
      end
    end

    def test_environment_with_rack_env
      with_rack_env "production" do
        assert_match "production", Dir.chdir(app_path) { `bin/rails runner "puts Rails.env"` }
      end
    end
  end
end