Selecting from a dropdown generically with Capybara

For my current project I am developing some smoke tests using Capybara. For smoke tests you want to get from the start to the end of a process without caring too much about the specifics of each page. Additionally, we want to  avoid hardcoding in the tests any data that changes. Otherwise data changes may lead to a misleading test failure (a false positive). In this project there are several dropdowns that contain lists of suppliers, energy plans,  etc. For the smoke test we just want to select a valid option and then move on to the next page.

To help with this I wrote some generic code to choose the second item in a select list – the first item usually being a “please select” message. To do this I use the XPath support in the Capybara API:

def select_second_option(id)
  second_option_xpath = "//*[@id='#{id}']/option[2]"
  second_option = find(:xpath, second_option_xpath).text
  select(second_option, :from => id)
end

The code uses this XPath: //*[@id='#{id}']/option[2] to select the text value of the second option. The standard Capybara API is then used to select that value in the dropdown.

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