嗨，来自StackOverflow的人，
我正在接管某人的工作，而我的前任使用Cucumber＆Capybara＆Selenium创建了一个测试集。 我对这个很熟悉，但我对他在页面上查找文本的方式有疑问。
他的实施：
期望（页面）.to have_content（文本）
我的实施：
page.has_content？（文本）
我注意到的是，第一个实现经常失败，因为自动化对于网站加载其页面而言“太快”。 后者似乎是一个更强大的实现，也许是因为它的简单性？
有人可以告诉我是否有对或错，或者这两者是否有根本的不同。 因为我一直在试图搜索网页，但还没有真正找到一个坚实的结论..
提前致谢！
Hi people from StackOverflow,
I'm taking over someone's work, and my predecessor created a testset using Cucumber&Capybara&Selenium. I'm familiar with the lot, but I've got a question concerning his way of finding text on a page.
His implementation:
expect(page).to have_content(text)
My implementation:
page.has_content?(text)
What I've noticed is that the first implementation often fails because the automation is 'too quick' for the website to load its page. The latter seems a more robust implementation, perhaps because of its simplicity?
Can someone tell me if there's a right or a wrong, or whether these two are fundamentally different. Because I've been trying to search the web but have not really found a solid conclusion..
Thanks in advance!
最满意答案
如果期望失败， have_content会引发异常，并且在大多数测试套件中应该比has_content更频繁地使用它。 has_content? 基本上只是一个包含has_content的包装器，它捕获异常并返回true或false，并用于条件
if page.has_content?(...) # click something else # click something else end您的前任正在正确使用Capybara，因为如果您正在测试以确保页面具有特定内容，则应使用have_content 。 has_content? 将永远不会失败的测试（只是默默地返回false并继续）。 如果你的have_content断言因为站点太慢而失败，你可能需要增加Capybara.default_max_wait_time （或弄清楚为什么页面加载时间太长）
have_content raises an exception when it's expectation fails and should be used much more often in most test suites than has_content?. has_content? is basically just a wrapper around have_content that catches the exception and returns true or false, and is for use with conditionals
if page.has_content?(...) # click something else # click something else endYour predecessor is using Capybara correctly since if you are testing to make sure a page has specific content you should be using have_content. has_content? will never fail the test (just silently return false and continue on). If your have_content assertions are failing because the site is too slow you probably need to increase Capybara.default_max_wait_time (or figure out why page load times are so long)
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