How to test a confirm dialog with Cucumber?

Question

I am using Ruby on Rails with Cucumber and Capybara.

How would I go about testing a simple confirm command ("Are you sure?")?

Also, where could I find further documentation on this issue?

Answer 1

The selenium driver now supports this

From Capybara you would access it like this:

page.driver.browser.switch_to.alert.accept 

or

page.driver.browser.switch_to.alert.dismiss 

or

 page.driver.browser.switch_to.alert.text 

Answer 2

Seems like there's no way to do it in Capybara, unfortunately. But if you're running your tests with the Selenium driver (and probably other drivers that support JavaScript), you can hack it. Just before performing the action that would bring up the confirm dialog, override the confirm method to always return true. That way the dialog will never be displayed, and your tests can continue as if the user had pressed the OK button. If you want to simulate the reverse, simply change it to return false.

page.evaluate_script('window.confirm = function() { return true; }')
page.click('Remove')

Answer 3

I've implemented these two web steps in /features/step_definitions/web_steps.rb:

When /^I confirm popup$/ do
  page.driver.browser.switch_to.alert.accept    
end

When /^I dismiss popup$/ do
  page.driver.browser.switch_to.alert.dismiss
end