Test some simple javascript with Minitest and Capybara
I'm seeking assistance on testing JavaScript that executes on the response page after a POST request.
So I have something like this
class YourControllerTest < ActionDispatch::IntegrationTest
test 'submitting a POST request' do
post '/your_controller/your_action', params: { your_param: 'some_value' }
# Check if the response was a redirect (status code 202)
assert_response :success
# Now you can assert against the content of the redirected page
assert_select 'h1', text: 'Expected Header'
end
end
Which works, but the page object only contains an empty HTML page (<html><head></head><body></body></html>).
And I should be able to interact with the `page?, according to this https://github.com/teamcapybara/capybara#asynchronous-javascript-ajax-and-friends
I've experimented with both Selenium and the JavaScript driver for Capybara. In my test, there's plain JavaScript that alters the context of an HTML block, and I want to verify its functionality with a Minitest.
Can someone guide me on how to approach this effectively?
To test JavaScript that runs after a POST request using Minitest and Capybara, you need to use Capybara's system tests or feature tests with a JavaScript-enabled driver like Selenium. IntegrationTest alone won’t execute JS. Try writing a Capybara::DSL test with js: true option and use visit or click_button to trigger actions. This way, Capybara can wait for JS changes and let you interact with the updated page.