Obtaining a file using capybara independently of rails

Case Study: Attempting to access an external URL using Capybara for downloading a file. It is necessary to use Selenium or Webkit as the driver, since Rack-test does not allow visiting external URLs.

This website utilizes iframes.

The prompt for file download is generated through javascript as shown below:

    <a href="javascript:OpenFile('****.pdf', 2)">some_text_here</a>

When clicking the link, a browser-native download confirmation box appears. Various methods have been tried without success: Selenium driver:

  • using custom profile -> no impact, popup still displays

    Capybara.register_driver :selenium do |app|
profile = Selenium::WebDriver::Firefox::Profile.new 
profile['browser.download.dir'] = "~/Downloads"
profile['browser.helperApps.neverAsk.saveToDisk'] = "application/pdf"
  Capybara::Selenium::Driver.new(app, :browser => :firefox, :profile => >profile)
end

  • using JavaScript before clicking link-> no effect

    within_frame(1) do
  page.evaluate_script('window.confirm = function() { return true; }')
  find(:xpath,"//span[@class='BoldText']/a").click

  • attempting to utilize alert -> not found even when download box appears

    page.driver.browser.switch_to.alert.accept
-> No alert is present

Webkit driver:

  • trying to use javascript -> file is not being downloaded

  • page.accept_confirm not finding any links

How can the file be successfully downloaded?

javascriptrubyseleniumcapybara

Answer №1

There was an issue where the application identified the file as having a type of application/octet-stream. However, this problem was successfully resolved by including the following code snippet:

    profile['browser.helperApps.neverAsk.saveToDisk'] = "application/pdf, application/octet-stream"

This simple solution effectively fixed the problem at hand.

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