warn user if options are given before application name [#3435 state:resolved]

Signed-off-by: José Valim <jose.valim@gmail.com>

railties/lib/rails/generators/rails/app/app_generator.rb

@@ -55,6 +55,7 @@ module Rails::Generators
                         :desc => "Show this help message and quit"
 
     def initialize(*args)
+      raise Error, "Options should be given after the application name. For details run: rails --help" if args[0].blank?
       super
       if !options[:skip_activerecord] && !DATABASES.include?(options[:database])
         raise Error, "Invalid value for --database option. Supported for preconfiguration are: #{DATABASES.join(", ")}."

railties/test/generators/app_generator_test.rb

@@ -58,6 +58,11 @@ class AppGeneratorTest < Rails::Generators::TestCase
     assert_no_file "public/stylesheets/application.css"
   end
 
+  def test_options_before_application_name_raises_an_error
+    content = capture(:stderr){ run_generator(["--skip-activerecord", destination_root]) }
+    assert_equal "Options should be given after the application name. For details run: rails --help\n", content
+  end
+  
   def test_name_collision_raises_an_error
     content = capture(:stderr){ run_generator [File.join(destination_root, "generate")] }
     assert_equal "Invalid application name generate. Please give a name which does not match one of the reserved rails words.\n", content