我有 Ruby 2.2.2,当我运行以下脚本时,我已经安装了 watir-webdriver gem
require 'rubygems'
require 'watir-webdriver'
browser = Watir::Browser.new :firefox
它让步
`require': cannot load such file -- watir-webdriver(LoadError)
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'
我有红宝石 7.1.2
这是我的宝石清单
$ gem list
*当地宝石*
bigdecimal (1.2.6) bundler (1.10.3) bundler-unload (1.0.2) childprocess (0.5.6) executable-hooks (1.3.2) ffi (1.9.8) gem-wrappers (1.2.7) io-控制台 (0.4.3) json (1.8.1) multi_json (1.11.1) psych (2.0.8) rake (10.4.2) rdoc (4.2.0) rubygems-bundler (1.4.4) rubyzip (1.1.7) rvm (1.11.3.9) selenium-webdriver (2.46.2) watir-webdriver (0.7.0) websocket (1.2.2) yard (0.8.7.6)
请建议怎么做?