例如：
# encoding: utf-8
require "capybara/dsl"
Capybara.run_server = false
Capybara.current_driver = :selenium
Capybara.app_host = 'https://hb.posted.co.rs/posted'
class Account
include Capybara::DSL
def check_balance
visit('/')
page.driver.browser.switch_to.frame 'main'
fill_in 'korisnik',:with => 'foo'
fill_in 'lozinka',:with => 'bar'
click_button 'Potvrda unosa'
page.driver.browser.switch_to.frame 'header'
click_on 'Stanje'
end
end
account = Account.new
account.check_balance
错误是：
[remote server]
file:///tmp/webdriver-profile20120810-9163-xy6dtm/extensions/fxdriver@googlecode.com/components/driver_component.js:6638:in
`unknown’: Unable to locate frame: main
(Selenium::WebDriver::Error::NoSuchFrameError)
问题是什么？也许我在这里做错事？
如果我改变切换帧的顺序,那么先尝试切换到’标题’,然后切换到’主’帧,然后相同的错误提高,除了它说这次没有’主’帧：
# encoding: utf-8
require "capybara/dsl"
Capybara.run_server = false
Capybara.current_driver = :selenium
Capybara.app_host = 'https://hb.posted.co.rs/posted'
class Account
include Capybara::DSL
def check_balance
visit('/')
page.driver.browser.switch_to.frame 'header'
click_on 'Stanje'
page.driver.browser.switch_to.frame 'main'
fill_in 'korisnik',:with => 'bar'
click_button 'Potvrda unosa'
end
end
account = Account.new
account.check_balance
错误：
[remote server]
file:///tmp/webdriver-profile20120810-9247-w3o5hj/extensions/fxdriver@googlecode.com/components/driver_component.js:6638:in
`unknown’: Unable to locate frame: main
(Selenium::WebDriver::Error::NoSuchFrameError)
解决方法
问题是当您执行page.driver.browser.switch_to.frame时,它将页面的上下文切换到框架.所有针对该页面的操作现在实际上都是针对该框架的.所以当你第二次切换帧时,你实际上是在’main’框架内找到’header’框架(而不是我假设你想要的,主页面的’header’框架).
解决方案 – Capybara in_frame(推荐)：
在框架内工作时,您应该使用Capybara的in_frame方法.你想做：
def check_balance
visit('/')
within_frame('main'){
fill_in 'korisnik',:with => 'foo'
fill_in 'lozinka',:with => 'bar'
click_button 'Potvrda unosa'
}
within_frame('header'){
click_on 'Stanje'
}
end
解决方案 – Selenium switch_to：
如果您想自己进行框架管理(即不使用Capybara的内置方法),则可以将页面的上下文切换回浏览器,然后再转到第二个框架.这将如下所示.虽然我建议使用内置的Capybara方法.
def check_balance
visit('/')
page.driver.browser.switch_to.frame 'header'
click_on 'Stanje'
#Switch page context back to the main browser
page.driver.browser.switch_to.default_content
page.driver.browser.switch_to.frame 'main'
fill_in 'korisnik',:with => 'bar'
click_button 'Potvrda unosa'
end