vendor/rails/railties/test/plugin_locator_test.rb

   1 require File.dirname(__FILE__) + '/plugin_test_helper'
   2
   3 uses_mocha "Plugin Locator Tests" do
   4
   5   class PluginLocatorTest < Test::Unit::TestCase
   6
   7     def test_should_require_subclasses_to_implement_the_plugins_method
   8       assert_raises(RuntimeError) do
   9         Rails::Plugin::Locator.new(nil).plugins
  10       end
  11     end
  12
  13     def test_should_iterator_over_plugins_returned_by_plugins_when_calling_each
  14       locator = Rails::Plugin::Locator.new(nil)
  15       locator.stubs(:plugins).returns([:a, :b, :c])
  16       plugin_consumer = mock
  17       plugin_consumer.expects(:consume).with(:a)
  18       plugin_consumer.expects(:consume).with(:b)
  19       plugin_consumer.expects(:consume).with(:c)
  20
  21       locator.each do |plugin|
  22         plugin_consumer.consume(plugin)
  23       end
  24     end
  25
  26   end
  27
  28
  29   class PluginFileSystemLocatorTest < Test::Unit::TestCase
  30     def setup
  31       @configuration = Rails::Configuration.new
  32       # We need to add our testing plugin directory to the plugin paths so
  33       # the locator knows where to look for our plugins
  34       @configuration.plugin_paths << plugin_fixture_root_path
  35       @initializer       = Rails::Initializer.new(@configuration)
  36       @locator           = Rails::Plugin::FileSystemLocator.new(@initializer)
  37       @valid_plugin_path = plugin_fixture_path('default/stubby')
  38       @empty_plugin_path = plugin_fixture_path('default/empty')
  39     end
  40
  41     def test_should_return_rails_plugin_instances_when_calling_create_plugin_with_a_valid_plugin_directory
  42       assert_kind_of Rails::Plugin, @locator.send(:create_plugin, @valid_plugin_path)
  43     end
  44
  45     def test_should_return_nil_when_calling_create_plugin_with_an_invalid_plugin_directory
  46       assert_nil @locator.send(:create_plugin, @empty_plugin_path)
  47     end
  48
  49     def test_should_return_all_plugins_found_under_the_set_plugin_paths
  50       assert_equal ["a", "acts_as_chunky_bacon", "plugin_with_no_lib_dir", "stubby"], @locator.plugins.map(&:name)
  51     end
  52
  53     def test_should_find_plugins_only_under_the_plugin_paths_set_in_configuration
  54       @configuration.plugin_paths = [File.join(plugin_fixture_root_path, "default")]
  55       assert_equal ["acts_as_chunky_bacon", "plugin_with_no_lib_dir", "stubby"], @locator.plugins.map(&:name)
  56
  57       @configuration.plugin_paths = [File.join(plugin_fixture_root_path, "alternate")]
  58       assert_equal ["a"], @locator.plugins.map(&:name)
  59     end
  60
  61     def test_should_not_raise_any_error_and_return_no_plugins_if_the_plugin_path_value_does_not_exist
  62       @configuration.plugin_paths = ["some_missing_directory"]
  63       assert_nothing_raised do
  64         assert @locator.plugins.empty?
  65       end
  66     end
  67   end
  68
  69 end # uses_mocha