Rails 3 验证问题 (Rspec)

Question

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

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

规格文件

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，为什么实例无效？我会在规范中添加一些调试：

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，这可能应该是一个评论，但是我不能这么容易地提供规范重写。