安装Shoulda,并让Rspec支持Shoulda

安装Shoulda

gem install thoughtbot-shoulda -s http://gems.github.com

在test_helper里添加:

require 'rubygems' 
gem 'thoughtbot-shoulda' 
require 'shoulda'

并让Rspec支持Shoulda
首先,确保Rspec是最新的

gem install rspec
gem install rspec-rails

在spec_helper里

require 'rubygems' 
gem 'thoughtbot-shoulda' 
require 'shoulda'

就可以在rspec下利用Shoulda的sugar了
示例:

describe User do
  it { should validate_presence_of(:name) }
  it { should validate_presence_of(:phone_number) }
  %w(abcd 1234).each do |value|
    it { should_not allow_value(value).for(:phone_number) }
  end
  it { should allow_value("[phone]").for(:phone_number) }
  it { should_not allow_mass_assignment_of(:password) }
  it { should have_one(:profile) }
  it { should have_many(:dogs) }
  it { should have_many(:messes).through(:dogs) }
  it { should belong_to(:lover) }
end