(1)功能测试需要用到Capybara、DatabaseCleaner、Launchy
(2)Capybara使用例如click_link、fill_in和visit,来模拟用户在浏览器中和应用程序交互的过程
(3)功能测试应该用feature替换掉describe,用scenario替换it
例:
feature ‘User management‘ do scenario "adds a new user" do admin = create(:admin) visit root_path click_link ‘Log In‘ fill_in ‘Email‘, wirh: admin.email fill_in ‘Password‘, with: admin.password click_button ‘Log In‘ visit root_path expect do click_link ‘Users‘ click_link ‘New User‘ fill_in ‘Email‘, with: ‘newuser@example.com‘ find(‘#password‘).fill_in ‘Password‘, with: ‘secret123‘ find(‘#password_confirmation‘).fill_in ‘Password confirmation‘, with:‘secret123’ click_button ‘Create User‘ end.to change(User, :count).by(1) expect(current_path).to eq users_path expect(page).to have_content ‘New user created‘ within ‘h1‘ do expect(page).to have_content ‘Users‘ end expect(page).to have_content ‘newuser@exaple.com‘ end end
(4)find(‘#password‘)通过dom元素的id查找,我们还可以通过XPath路径查找,或者使用普通的文本查找,例如click_link ‘Users‘,如果没找到测试会报错
(5)within用来限定查找指定区域,within ‘h1‘表示只在<h1>标签中查找
(6)功能测试中,一个测试用例或场景中可以包含多个期望
(7)Capybara 2.0对DSL句法做了一些该表,用功能测试替换了请求测试,请求测试仅仅用于API接口测试
(8)feature和scenario仅用与功能测试,功能测试中用background对应before,given对应let,同时feature不能嵌套
(9)Launchy用于把功能测试当前渲染也面保存到一个临时文件夹,然后在系统默认浏览器中打开
(10)Launchy使用方法,在想看页面的地方加入save_and_open_page
(11)Capybara默认的Web启动是Rack::Test,无法处理JavaScript,可以使用Selenium来模拟JavaScript
(12)Selenium使用,只需要在需要js交互的scenario的block前加上js: true就可以了
(13)使用Selenium的同时,需要是用Database Cleaner处理数据库事务,为了将事务清理干净
(14)Database Cleaner配置:
spec/spec_helper.rb
RSpec.configure do |config| config.use_transactional_fixtures = false config.before(:suite) do DatabaseCleaner.strategy = :truncation end config.before(:each) do DatabaseCleaner.start end config.after(:each) do DatabaseCleaner.clean end end spec/support/shared_db_connection.db class ActiveRecord::Base mattr_accessor :shared_connection @@shard_connection = nil def self.connection @@shared_connection || retrieve_connection end end ActiveRecord::Base.shared_connection = ActiveRecord::Base.connection
原文:http://my.oschina.net/u/1413049/blog/403967