RailsTutorial-笔记3-静态页面
Demo3 simple app
来自 RailsTutorial 3rd 第三章
新建项目
rails new demo3-simpleapp --skip-bundle # 可更改gem源到国内 https://ruby.taobao.org # 添加gem包 bundle install --without production
git
git init git add -A git commit -m "init simple app" git remote add origin [email protected]:imedingyiming/demo3-simpleapp.git git push -u origin --all
推送到heroku
heroku create demo3-simpleapp git push heroku master heroku logs heroku open
切新分支
git checkout master git checkout -b static-pages
静态页面控制器
rails g controller StaticPages home help
rails命令简写
rails server rails s rails console rails c rails generate rails g bundle install bundle rake test rake
推送
git status git add -A git commit -m "add static pages" git push -u origin static-pages
Ruby文件名一般使用蛇底式,rails生成器使用underscore方法把驼峰式转换成蛇底式
rails撤销操作
rails destroy controller StaticPages home help rails destroy model User bundle exec rake db:rollback bundle exec rake db:migrate VERSION=0
开始测试 TDD
好处
1.测试避免"回归",即由于某些原因之前能用的功能不能用了;
2.有测试,重构(改变实现方式,但功能不变)时更有自信;
3.测试是应用代码的客户
什么时候进行测试
和应用代码相比,测试代码特别简短,倾向于先编写测试
如果实现的功能不清楚,倾向于先写应用代码
为安全先测试
只要发现一个问题,就编写一个测试重现这个问题,以避免回归,然后再编写应用代码修正问题
尽量不为以后可能修改的代码编写测试
重构之前要编写测试,集中测试容易出错的代码
一般先编写控制器和模型测试,再编写集成测试,如果代码经常变动就完全不测试
第一个测试
ls test/controllers/
static_pages_controller_test.rb
# test/controllers/static_pages_controller_test.rb
require 'test_helper'
class StaticPagesControllerTest < ActionController::TestCase
test "should get home" do
get :home
assert_response :success
end
test "should get help" do
get :help
assert_response :success
end
end
# 执行测试
bundle exec rake testTDD工作流
RED -> GREEN -> REWORK
1.RED
#添加 test "should get home" do get :home assert_response :success assert_select "title","Home | Ruby on Rails Tutorial" end test "should get help" do get :help assert_response :success assert_select "title","Help | Ruby on Rails Tutorial" end test "should get about" do get :about assert_response :success assert_select "title","About | Ruby on Rails Tutorial" #html标签为什么内容 end
测试:bundle exec rake test
2.GREEN
#routes.rb get 'static_pages/about' #static_pages_controller.rb def about end #static_pages/about.html.erb <!DOCTYPE html> <html> <head> <title>About | Ruby on Rails Tutorial</title> </head> about </html> 其他类似
测试:bundle exec rake test
3.REWORK
布局和嵌入式Ruby
app/views/layouts/application.html.erb
<!DOCTYPE html> <html> <head> <title><%= yield(:title)%></title> <%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track' => true %> <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %> <%= csrf_meta_tags %> </head> <body> <%= yield %> </body> </html>
about.html.erb
<% provide(:title, "about"%> about #其他类似
测试:bundle exec rake test
高级测试技术,MiniTest报告程序(下一遍添加)
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