应该:测试 validates_presence_of :on =>:更新 [英] Shoulda: Test validates_presence_of :on => :update

问题描述

我在我从事的一个项目中结合使用了 Shoulda 和 Test::Unit.我遇到的问题是我最近改变了这个:

I'm using Shoulda in combination with Test::Unit on one of the projects I work on. The issue I'm running into is that I recently changed this:

class MyModel < ActiveRecord::Base
  validates_presence_of :attribute_one, :attribute_two
end

为此:

class MyModel < ActiveRecord::Base
  validates_presence_of :attribute_one
  validates_presence_of :attribute_two, :on => :update
end

以前，我的(通过)测试是这样的:

Previously, my (passing) tests looked like this:

class MyModelTest < ActiveSupport::TestCase
  should_validate_presence_of :attribute_one, :attribute_two
end

据我所知，should_validate_presence_of 没有参数会导致此测试继续通过上面指定的更改.在测试:attribute_two的需求时，没有放弃应该，有什么办法可以解决这个问题吗?

As far as I can tell, there is no parameter to should_validate_presence_of that will cause this test to continue to pass with the changes specified above. Short of abandoning Shoulda when testing the requirement of :attribute_two, is there any way around this?

推荐答案

过去我只是使用了一个小的自定义应该块来解决这个问题:

In that past I have just used a small custom should block to get around this problem:

should "require :attr_two on update" do
  mm = Factory(:my_model)
  mm.attr_two = nil
  mm.save
  assert_equal false, mm.valid?
  assert_equal("can't be blank", mm.errors.on(:attr_two))
 end

希望将来通过允许进一步的 AR 验证选项来不断改进.让我知道你的想法，干杯.

Hopefully shoulda will keep improving by allowing further AR validation options in the future. Let me know what you think, cheers.

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