rails--rails/railties/test/generators_test.rb

require File.join(File.dirname(__FILE__), 'generators', 'generators_test_helper')
require 'rails/generators/rails/model/model_generator'
require 'rails/generators/test_unit/model/model_generator'
require 'mocha'

class GeneratorsTest < GeneratorsTestCase
  def setup
    Rails::Generators.instance_variable_set(:@load_paths, nil)
    Gem.stubs(:respond_to?).with(:loaded_specs).returns(false)
  end

  def test_invoke_when_generator_is_not_found
    output = capture(:stdout){ Rails::Generators.invoke :unknown }
    assert_equal "Could not find generator unknown.\n", output
  end

  def test_help_when_a_generator_with_required_arguments_is_invoked_without_arguments
    output = capture(:stdout){ Rails::Generators.invoke :model, [] }
    assert_match /Description:/, output
  end

  def test_invoke_with_default_values
    Rails::Generators::ModelGenerator.expects(:start).with(["Account"], {})
    Rails::Generators.invoke :model, ["Account"]
  end

  def test_invoke_with_config_values
    Rails::Generators::ModelGenerator.expects(:start).with(["Account"], :behavior => :skip)
    Rails::Generators.invoke :model, ["Account"], :behavior => :skip
  end

  def test_find_by_namespace_without_base_or_context
    assert_nil Rails::Generators.find_by_namespace(:model)
  end

  def test_find_by_namespace_with_base
    klass = Rails::Generators.find_by_namespace(:model, :rails)
    assert klass
    assert_equal "rails:generators:model", klass.namespace
  end

  def test_find_by_namespace_with_context
    klass = Rails::Generators.find_by_namespace(:test_unit, nil, :model)
    assert klass
    assert_equal "test_unit:generators:model", klass.namespace
  end

  def test_find_by_namespace_add_generators_to_raw_lookups
    klass = Rails::Generators.find_by_namespace("test_unit:model")
    assert klass
    assert_equal "test_unit:generators:model", klass.namespace
  end

  def test_find_by_namespace_lookup_to_the_rails_root_folder
    klass = Rails::Generators.find_by_namespace(:fixjour)
    assert klass
    assert_equal "fixjour", klass.namespace
  end

  def test_find_by_namespace_lookup_to_deep_rails_root_folders
    klass = Rails::Generators.find_by_namespace(:fixjour, :active_record)
    assert klass
    assert_equal "active_record:generators:fixjour", klass.namespace
  end

  def test_find_by_namespace_lookup_traverse_folders
    klass = Rails::Generators.find_by_namespace(:javascripts, :rails)
    assert klass
    assert_equal "rails:generators:javascripts", klass.namespace
  end

  def test_find_by_namespace_lookup_to_vendor_folders
    klass = Rails::Generators.find_by_namespace(:mspec)
    assert klass
    assert_equal "mspec", klass.namespace
  end

  def test_find_by_namespace_lookup_with_gem_specification
    assert_nil Rails::Generators.find_by_namespace(:xspec)
    Rails::Generators.instance_variable_set(:@load_paths, nil)

    spec = Gem::Specification.new
    spec.expects(:full_gem_path).returns(File.join(Rails.root, 'vendor', 'another_gem_path', 'xspec'))
    Gem.expects(:respond_to?).with(:loaded_specs).returns(true)
    Gem.expects(:loaded_specs).returns(:spec => spec)

    klass = Rails::Generators.find_by_namespace(:xspec)
    assert klass
    assert_equal "xspec", klass.namespace
  end

  def test_builtin_generators
    assert Rails::Generators.builtin.include? %w(rails model)
  end

  def test_rails_generators_help_with_builtin_information
    output = capture(:stdout){ Rails::Generators.help }
    assert_match /model/, output
    assert_match /scaffold_controller/, output
  end

  def test_rails_generators_with_others_information
    output = capture(:stdout){ Rails::Generators.help }.split("\n").last
    assert_equal "Others: active_record:fixjour, fixjour, mspec, rails:javascripts.", output
  end

  def test_warning_is_shown_if_generator_cant_be_loaded
    Rails::Generators.load_paths << File.expand_path("../fixtures/vendor/gems/gems/wrong", __FILE__)
    output = capture(:stderr){ Rails::Generators.find_by_namespace(:wrong) }
    assert_match /\[WARNING\] Could not load generator at/, output
    assert_match /Error: uninitialized constant Rails::Generator/, output
  end

  def test_no_color_sets_proper_shell
    Rails::Generators.no_color!
    assert_equal Thor::Shell::Basic, Thor::Base.shell
  ensure
    Thor::Base.shell = Thor::Shell::Color
  end

  def test_rails_root_templates
    template = File.join(Rails.root, "lib", "templates", "active_record", "model", "model.rb")

    # Create template
    mkdir_p(File.dirname(template))
    File.open(template, 'w'){ |f| f.write "empty" }

    output = capture(:stdout) do
      Rails::Generators.invoke :model, ["user"], :destination_root => destination_root
    end

    assert_file "app/models/user.rb" do |content|
      assert_equal "empty", content
    end
  ensure
    rm_rf File.dirname(template)
  end

  def test_fallbacks_for_generators_on_find_by_namespace
    Rails::Generators.fallbacks[:remarkable] = :test_unit
    klass = Rails::Generators.find_by_namespace(:plugin, :remarkable)
    assert klass
    assert_equal "test_unit:generators:plugin", klass.namespace
  end

  def test_fallbacks_for_generators_on_invoke
    Rails::Generators.fallbacks[:shoulda] = :test_unit
    TestUnit::Generators::ModelGenerator.expects(:start).with(["Account"], {})
    Rails::Generators.invoke "shoulda:model", ["Account"]
  end

  def test_nested_fallbacks_for_generators
    Rails::Generators.fallbacks[:super_shoulda] = :shoulda
    TestUnit::Generators::ModelGenerator.expects(:start).with(["Account"], {})
    Rails::Generators.invoke "super_shoulda:model", ["Account"]
  end

  def test_developer_options_are_overwriten_by_user_options
    Rails::Generators.options[:new_generator] = { :generate => false }

    klass = Class.new(Rails::Generators::Base) do
      def self.name
        "NewGenerator"
      end

      class_option :generate, :default => true
    end

    assert_equal false, klass.class_options[:generate].default
  end

  def test_source_paths_for_not_namespaced_generators
    mspec = Rails::Generators.find_by_namespace :mspec
    assert mspec.source_paths.include?(File.join(Rails.root, "lib", "templates", "mspec"))
  end
end