visit page_with_token 'active', sandbox_path
find('.nav-tabs a', text: 'Upload').click
attach_file 'file_selector', testfile_path('a')
attach_file 'file_selector', testfile_path('foo.txt')
assert_selector 'button:not([disabled])', text: 'Start'
click_button 'Start'
visit page_with_token 'active', sandbox_path
find('.nav-tabs a', text: 'Upload').click
attach_file 'file_selector', testfile_path('a')
attach_file 'file_selector', testfile_path('foo.txt')
assert_selector 'button:not([disabled])', text: 'Start'
click_button 'Start'