Chris@0: # Tests in this file ensure that:
Chris@0: #
Chris@0: # * the application /app/[controllers|helpers|models] and /lib 
Chris@0: #   paths preceed the corresponding plugin paths
Chris@0: # * the plugin paths are added to $LOAD_PATH in the order in which plugins are 
Chris@0: #   loaded
Chris@0: 
Chris@0: require File.dirname(__FILE__) + '/../test_helper'
Chris@0: 
Chris@0: class LoadPathTest < Test::Unit::TestCase
Chris@0:   def setup
Chris@0:     @load_path = expand_paths($LOAD_PATH)
Chris@0:   end
Chris@0:   
Chris@0:   # Not sure if these test actually make sense as this now essentially tests
Chris@0:   # Rails core functionality. On the other hand Engines relies on this to some
Chris@0:   # extend so this will choke if something important changes in Rails.
Chris@0:   
Chris@0:   # the application app/... and lib/ directories should appear
Chris@0:   # before any plugin directories
Chris@0:   
Chris@0:   def test_application_app_libs_should_precede_all_plugin_app_libs
Chris@0:     types = %w(app/controllers app/helpers app/models lib)
Chris@0:     types.each do |t|
Chris@0:       app_index = load_path_index(File.join(RAILS_ROOT, t))
Chris@0:       assert_not_nil app_index, "#{t} is missing in $LOAD_PATH"
Chris@0:       Engines.plugins.each do |plugin|
Chris@0:         first_plugin_index = load_path_index(File.join(plugin.directory, t))
Chris@0:         assert(app_index < first_plugin_index) unless first_plugin_index.nil?
Chris@0:       end
Chris@0:     end
Chris@0:   end
Chris@0:   
Chris@0:   # the engine directories should appear in the proper order based on
Chris@0:   # the order they were started  
Chris@0:   
Chris@0:   def test_plugin_dirs_should_appear_in_reverse_plugin_loading_order
Chris@0:     app_paths = %w(app/controllers/ app app/models app/helpers lib)
Chris@0:     app_paths.map { |p| File.join(RAILS_ROOT, p)}
Chris@0:     plugin_paths = Engines.plugins.reverse.collect { |plugin| plugin.load_paths.reverse }.flatten    
Chris@0:     
Chris@0:     expected_paths = expand_paths(app_paths + plugin_paths)    
Chris@0:     # only look at those paths that are also present in expected_paths so
Chris@0:     # the only difference would be in the order of the paths
Chris@0:     actual_paths = @load_path & expected_paths 
Chris@0:     
Chris@0:     assert_equal expected_paths, actual_paths
Chris@0:   end
Chris@0:   
Chris@0:   protected    
Chris@0:     def expand_paths(paths)
Chris@0:       paths.collect { |p| File.expand_path(p) }
Chris@0:     end
Chris@0:     
Chris@0:     def load_path_index(dir)
Chris@0:       @load_path.index(File.expand_path(dir))
Chris@0:     end  
Chris@0: end