These steps are now part of Spreewald.

The step definitions below allow you to test the filename suggested by the server:

When I follow "Export as ZIP"
Then I should get a download with the filename "contacts_20110203.zip"

Capybara

Then /^I should get a download with the filename "([^\"]*)"$/ do |filename|
  page.driver.response.headers['Content-Disposition'].should include("filename=\"#{filename}\"")
end

Webrat

Then /...