Ruby on Rails新手求助：加载user_spec.rb时出现NoMethodError错误

报错详情： #

An error occurred while loading ./spec/models/user_spec.rb.
Failure/Error: require_relative '../config/environment'

NoMethodError:
  undefined method `driver_path=' for Selenium::WebDriver::Chrome:Module
# /home/umair/.rvm/gems/ruby-2.7.0/gems/chromedriver-helper-2.1.1/lib/chromedriver-helper.rb:4:in `<main>'
# /home/umair/.rvm/gems/ruby-2.7.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
# /home/umair/.rvm/gems/ruby-2.7.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
# ./config/application.rb:10:in `<top (required)>'
# ./config/environment.rb:4:in `require_relative'
# ./config/environment.rb:4:in `<top (required)>'
# ./spec/rails_helper.rb:4:in `require_relative'
# ./spec/rails_helper.rb:4:in `<top (required)>'
# ./spec/models/user_spec.rb:1:in `require'
# ./spec/models/user_spec.rb:1:in `<top (required)>'
No examples found.

问题原因 #

chromedriver-helper 是已废弃的gem，它调用的Selenium::WebDriver::Chrome.driver_path=方法在新版本Selenium WebDriver中已被移除，导致兼容性冲突。

解决步骤 #

• 打开项目Gemfile，删除gem 'chromedriver-helper'这一行
• 在Gemfile的test分组中添加webdrivers gem（自动管理浏览器驱动版本）：

  group :test do
    gem 'webdrivers'
  end
  

• 运行命令更新依赖：

  bundle install
  

• 若仍有版本冲突，在Gemfile中指定适配Ruby 2.7.0的Selenium版本：

  gem 'selenium-webdriver', '~> 4.0'
  

  再次执行bundle install
• 重新运行测试：

  rspec spec/models/user_spec.rb
  

内容的提问来源于stack exchange，提问作者Umair Hameed