Rails 3验证问题（Rspec）

Question

完全被这个难住了。我发誓，这看起来应该工作，但它没有。测试数据库已更新（rake db：migrate - rake：db：test：clone）。我希望我做一些愚蠢的事情。

完全披露，我正在运行3.1 RC4。

型号

class ExerciseSet < ActiveRecord::Base 

    TYPES = %w[time rep] 

    validates :type, 
      :presence => true, 
      :inclusion => { :in => TYPES } 

end 

SPEC文件

require 'spec_helper' 

describe ExerciseSet do 

    before(:each) do 
    @attr = { :value => 12, 
       :value_max => 15, 
       :type => "timed", 
       :target => "range" 
    }    
    end 


    describe "type" do 
    it "must be either 'time' or 'rep'" do 
     values = %w[time rep] 
     values.each do |value| 
     exercise_instance = ExerciseSet.new(@attr.merge(:type => value)) 
     exercise_instance.should be_valid 
     end 
    end 
    end 

end 

输出

Failures: 

    1) ExerciseSet type must be either 'time' or 'rep' 
    Failure/Error: exercise_instance.should be_valid 
     expected valid? to return true, got false 
    # ./spec/models/exercise_set_spec.rb:19:in `block (4 levels) in <top (required)>' 
    # ./spec/models/exercise_set_spec.rb:17:in `each' 
    # ./spec/models/exercise_set_spec.rb:17:in `block (3 levels) in <top (required)>' 

Answer 1

首先第一件事情 - 为什么不是实例有效吗？我会加入一些调试规范：

describe "type" do 
    it "must be either 'time' or 'rep'" do 
    values = %w[time rep] 
    values.each do |value| 
     exercise_instance = ExerciseSet.new(@attr.merge(:type => value)) 
     exercise_instance.valid? # force errors 
     puts exercise_instance.errors.full_messages.join("\n") 
     exercise_instance.should be_valid 
    end 
    end 
end 

是的，这也许应该是一个评论，但我不能那么容易提供规范重写。