小编Mic*_*erl的帖子

使用Rails 3.1.3,我试图弄清楚为什么我们的计数器缓存在通过update_attributes更改父记录ID时没有正确更新.

class ExhibitorRegistration < ActiveRecord::Base
  belongs_to :event, :counter_cache => true
end

class Event < ActiveRecord::Base
  has_many :exhibitor_registrations, :dependent => :destroy
end

describe ExhibitorRegistration do
  it 'correctly maintains the counter cache on events' do
    event = Factory(:event)
    other_event = Factory(:event)
    registration = Factory(:exhibitor_registration, :event => event)

    event.reload
    event.exhibitor_registrations_count.should == 1

    registration.update_attributes(:event_id => other_event.id)

    event.reload
    event.exhibitor_registrations_count.should == 0

    other_event.reload
    other_event.exhibitor_registrations_count.should == 1
  end
end

此规范失败,表明事件上的计数器缓存未递减.

1) ExhibitorRegistration correctly maintains the counter cache on events
   Failure/Error: event.exhibitor_registrations_count.should == 0
     expected: 0
          got: …

我有一个非常简单的React.js组件，该组件使用“阅读更多” /“阅读更少”功能来修饰一长段标记。

我在Jest上进行了一些测试，但是，我无法断言DOM元素的高度正在增加到原始内容的大小。

在Jest测试环境中，我对getDOMNode（）。scrollHeight的调用似乎未返回任何内容。

这是代码和测试失败的存储库链接：https : //github.com/mguterl/react-jest-dom-question

下面是说明相同问题的代码和测试的简化版本：

简码

var ReadMore = React.createClass({
  getInitialState: function() {
    return {
      style: {
        height: '0px'
      }
    }
  },

  render: function() {
    return (
      <div>
        <div ref='content' className='read-more__content' style={this.state.style} dangerouslySetInnerHTML={{__html: this.props.content}} />
        <a onClick={this.expand} href='#'>Expand</a>
      </div>
    );
  },

  expand: function() {
    // This call to scrollHeight doesn't return anything when testing.
    var height = this.refs.content.getDOMNode().scrollHeight;

    this.setState({
      style: {
        height: height
      }
    });
  }
});

测试

jest.dontMock('../ReadMore');

global.React = require('react/addons');
var TestUtils = React.addons.TestUtils; …

我们有一个相当大的rails应用程序,我在unicorn.log中启动了这个输出:

#:0xc644248>#:0xc644248>#:0xc4f06e4>#:0xc4f06e4>#:0xca481b4>#:0xca481b4>#:0xc53f604>#:0xc53f604>#:0xcd7a60c>#:0xcd7a60c>#:0xc5df2f8>#:0xc5df2f8>#:0xc69fd00>#:0xc69fd00>#:0xc560ae8>#:0xc560ae8>

在我看来,可能有一个杂散的Kernel.puts方法调用某处,但我一直在搜索几个小时,但找不到它.

任何人都有跟踪此类内容的提示吗？