衡量页面性能
Watir-Performance gem 旨在为 Watir 操作提供一组导航计时指标，使用 W3C 页面性能标准。这是捕获响应时间指标的完美解决方案，而且非常简单。适用于 Chrome、Firefox、Edge 和 IE9 及更高版本。目前不支持 Safari。
require 'watir'
require 'watir-performance'
10.times do
b = Watir::Browser.new :chrome
b.goto 'http://watir.com'
load_secs = b.performance.summary[:response_time] / 1000
puts "Load Time: #{load_secs} seconds."
b.close
end这会生成类似以下内容
Load Time: 3.701 seconds.
Load Time: 0.694 seconds.
Load Time: 1.874 seconds.
Load Time: 1.721 seconds.
Load Time: 2.096 seconds.
Load Time: 0.823 seconds.
Load Time: 2.362 seconds.
Load Time: 1.008 seconds.
Load Time: 1.761 seconds.
Load Time: 2.066 seconds.可用指标分组列表
- :summary
- :navigation
- :memory
- :timing