Firefox 4 with watir webdriver: Need help using helperApps.neverAsk to save CSV without prompting

Question

I learned how to use Firefox 4 with watir and webdriver (on Win7 x64), setting profile items. Example:

profile = Selenium::WebDriver::Firefox::Profile.new
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Answer 1

In Firefox 6+, I couldn't get this to work without specifically setting the 'browser.download.folderList' value:

profile = Selenium::WebDriver::Firefox::Profile.new
profile['browser.download.folderList'] = 2 #custom location
profile['browser.download.dir'] = download_directory
profile['browser.helperApps.neverAsk.saveToDisk'] = "text/csv, application/csv"
b = Watir::Browser.new :firefox, :profile => profile

See: http://watirwebdriver.com/browser-downloads/

Answer 2

I've done some testing of this for you, unfortunately there doesn't seem to be a standard content-type for CSV files. You can try passing a comma separated list of content-types, hopefully one of those work for you. For me it was application/octet-stream that did the trick...

require 'watir-webdriver'
require 'selenium-webdriver'

profile = Selenium::WebDriver::Firefox::Profile.new
profile["browser.download.useDownloadDir"] = true
profile["browser.download.dir"] = '/tmp'
profile["browser.helperApps.neverAsk.saveToDisk"] = "text/plain, application/vnd.ms-excel, text/csv, text/comma-separated-values, application/octet-stream"
driver = Selenium::WebDriver.for :firefox, :profile => profile
browser = Watir::Browser.new(driver)

browser.goto "http://altentee.com/test/test.csv"