如何解決rspec的「未定義的方法`validate_presence_of」錯誤

當我運行rspec我得到這個錯誤：如何解決rspec的「未定義的方法`validate_presence_of」錯誤

Failures: 

    1) User 
    Failure/Error: it { should validate_presence_of :email } 

    NoMethodError: 
     undefined method `validate_presence_of' for <RSpec::ExampleGroups::User:0x007f8177ff3408> 
    # ./spec/models/user_spec.rb:5:in `block (2 levels) in <top (required)>' 

Finished in 0.00168 seconds (files took 2.72 seconds to load) 
1 example, 1 failure 

Failed examples: 

rspec ./spec/models/user_spec.rb:5 # User

但是，如何才能解決這個問題？

這是我的Gemfile：

group :development, :test do 
gem 'byebug' 
gem 'rspec-rails', '~> 3.4', '>= 3.4.1' 
gem "factory_girl_rails", "~> 4.0" 
gem 'capybara', '~> 2.6', '>= 2.6.2' 
# Call 'byebug' anywhere in the code to stop execution and get a  debugger console 
gem 'byebug' 
end 

group :test do 
    gem 'shoulda-matchers', require: false 
end

這是我的模型：

class User < ActiveRecord::Base 
    validates :email, presence: true 
end

而且我user_spec：

require 'rails_helper' 

RSpec.describe User, type: :model do 
    #pending "add some examples to (or delete) #{__FILE__}" 
    it { should validate_presence_of :email } 

end

來源

2016-02-01 Rul

[可能是幫助]（https://github.com/thoughtbot/shoulda/issues/203） – potashin

對於RSpec :: ExampleGroups：[undefined method \'validate \ _presence \ _of' ：User :: Validations]（http://stackoverflow.com/questions/31276625/undefined-method-validate-presence-of-for-rspecexamplegroupsuservalidati） – Phiter

歡迎來到Stack Overflow。我建議閱讀http://catb.org/esr/faqs/smart-questions.html。它充滿了你的偉大提示。沒有必要說「請幫助我」，因爲這是該網站的用途。我們期待寫得很好的問題，而不是乞討。請花時間格式化您的問題並使用適當的大寫字母;那些回報。 –

添加到您的rails_helper.rb

require 'shoulda/matchers'

您的規格缺少shoulda matcher的方法。

請看看thread。希望這可以幫助

來源

2016-02-02 00:30:30 SsouLlesS

謝謝單加在shoulda_matchers_helper.rb這個：Shoulda :: Matchers.configure do | config | config.integrate do | with | with.test_framework：rspec with.library：rails end end – Rul

如何解決rspec的「未定義的方法`validate_presence_of」錯誤

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