Kevin Clark looked at his options for testing his RJS (Javascript templates for Rails) templates but wasn't happy with the limited options, so he rolled his own testing system as a Rails plugin. It's called ARTS (Another RJS Testing System) and is available here. It's pretty neat, and if your app uses a lot of RJS templates, you're going to want it. Here's an example of a test using ARTS:

def test_create_rjs
  xhr :post, :create, :post => {:title => "Yet Another Post", :body => "This is yet another post"}
  assert_rjs :insert_html, :bottom, 'posts'
  assert_rjs :visual_effect, :highlight, "post_#{assigns(:post).id}"
end

Here are some general examples of how powerful it is:

assert_rjs :alert, 'Hi!'
assert_rjs :assign, 'a', '2'
assert_rjs :call, 'foo', 'bar', 'baz'
assert_rjs :draggable, 'draggable_item'
assert_rjs :drop_receiving, 'receiving_item'
assert_rjs :hide, "post_1", "post_2", "post_3"
assert_rjs :insert_html, :bottom, 'posts', "Here's text from insert_html"
assert_rjs :redirect_to, :action => 'list'
assert_rjs :remove, "post_1", "post_2", "post_3"
assert_rjs :replace, :bottom, 'This is something to replace'
assert_rjs :replace_html, "This is something for replace_html"
assert_rjs :show, "post_1", "post_2", "post_3"
assert_rjs :sortable, 'sortable_item'
assert_rjs :toggle, "post_1", "post_2", "post_3"
assert_rjs :visual_effect, :highlight, "posts", :duration => '1.0'

Technorati Tags: rails, rjs