ruby-on-rails - 应该匹配错误:# 的未定义方法 `validate_presence_of'

Question

我正在学习 TDD 并尝试使用 shoulda_matchers 来帮助我进行测试，但我遇到了一个非常奇怪的错误。这是我的测试:

规范/模型/idea_spec.rb

require 'rails_helper'

describe Idea do

  context 'Validations' do
    describe 'title' do
       it { should validate_presence_of(:title) }
    end
  end
end

测试错误说:

Idea Validations title 
 Failure/Error: it { should validate_presence_of(:title) }
 NoMethodError:
   undefined method `validate_presence_of' for #<RSpec::ExampleGroups::Idea_3::Validations::Title:0x007f056f9fcdf8>
 # ./spec/models/idea_spec.rb:7:in `block (4 levels) in <top (required)>'

根据 gem 说明，require 'shoulda/matchers' 位于我的 rails_helper 文件的顶部。

我正在使用的 gem :

group :development, :test do
  gem 'spring'
  gem 'dotenv-rails'
  gem 'rspec-rails', '~> 3.0'
  gem 'factory_girl_rails'
end

group :test do
  gem 'webmock', '~> 1.20.4'
  gem 'shoulda-matchers', require: false
end

1. ruby '2.1.2'
2. rails ', '4.1.9'

Answer 1

Shoulda-Matchers 不再自动将自己安装到您的测试框架中。您需要将此添加到您的 rails_helper:

Shoulda::Matchers.configure do |config|
  config.integrate do |with|
    with.test_framework :rspec
    with.library :rails
  end
end

参见 this GitHub issue , 阅读 note on shoulda-matchers configuration ，并阅读此 blog post by maintainers .