黄瓜/水豚：测试失败随机PhantomJS [英] Cucumber/Capybara: tests fail randomly under PhantomJS

问题描述

当我在PhantomJS下运行黄瓜时，我得到

When I run cucumber scenarios under PhantomJS I get

Capybara::ElementNotFound: Unable to find css ".given_class"

随机地点的例外情况

驱动程序不等待元素外观

it looks like driver does not wait for element appearance

我使用的是：
Ruby 2.0
Cucumber 1.3.6
Capybara 2.1.0
Selenium-webdriver 2.35.1
PhantomJS 1.9.1

I'm using: Ruby 2.0 Cucumber 1.3.6 Capybara 2.1.0 Selenium-webdriver 2.35.1 PhantomJS 1.9.1

推荐答案

Capybara，特别是PhantomJS会加载一个页面，并执行检查元素。因此，一些元素可能没有加载，测试失败。默认情况下，capybara的等待时间为2，这可以增加。可能尝试：

Capybara, particularly with PhantomJS will load a page really quickly, and perform checks for elements. As such, some elements may not have loaded and tests fail. By default capybara has a wait time of 2, which you can increase. Maybe try:

Capybara.default_wait_time = 5

像他们在文档这里

>。

like they suggest in the docs here.

您还可以在步骤定义中添加Sleep（1），但这被认为是错误的形式。

You can also add a Sleep(1) in your step definition, but that is considered bad form.

如果这样做不适合您，请尝试指定该网页上应该找到该元素的位置。

If that doesn't do it for you, try specifying where on the page the element should be found.

例如：

Then /^I should see "(.*?)" on the dashboard$/ do |your_element|
  within("#your") do
    expect(page).to have_content(your_element)
  end
end

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