Added test to check that the vendor/assets/javascripts directory is created

railties/test/generators/app_generator_test.rb

@@ -203,6 +203,11 @@ def test_creation_of_a_test_directory
     assert_file 'test'
   end
 
+  def test_creation_of_vendor_assets_javascripts_directory
+    run_generator
+    assert_file "vendor/assets/javascripts"
+  end
+
   def test_jquery_is_the_default_javascript_library
     run_generator
     assert_file "app/assets/javascripts/application.js" do |contents|