如何使用Ruby on Rails测试AJAX？

Question

Can somebody give advice, how to test AJAX in Ruby on Rails? For example: i click to button, query going to TestController#new, and in that method we have respond_with(@test) and new.js.erb, where is html form. Ok, i can click_to this link/button, xhr query will work, but i don't get any responses, which i need to test.

Can some body help with this, please? I'm using Rspec.

Answer 1

In Rails 4.2 , for send ajax request, set optional hash argument with key "xhr: true" to call of get, post, patch, put, or delete method. For example:

get users_path + '?page=2', xhr: true

and then use assert_select for verify some HTML elements on updated page.

Answer 2

You should use Capybara and Selenium. Look at this great Railscast .

Answer 3

Depending on what your Ajax request has .. it may actually be best to test it on multiple levels.

Test your controller's response with a controller test.

Test your JS correctly dealing with this response with a pure JS testing framework like jasmine.

Test your flow through the application with something like cucumber, or an integration rspec (with the help of capybara/selenium).