Question

我有这样的测试

  it 'could not update question' do
    old_title = question.title
    old_body = question.body
    old_updated_at = question.updated_at

    patch :update, id: question, question: attributes_for(:question, title: 'new valid title', body: 'new valid body'), format: :js
    question.reload

    expect(question.title).to eq old_title
    expect(question.body).to eq old_body
    expect(question.updated_at).to eq old_updated_at
  end

它引发了一个错误：

1）QuestionsController PATCH #update问题由别人可以不更新问题失败/错误：期望（question.updated_at）.to eq old_updated_at
   expected: 2016-04-09 18:05:03.650576201 +0000
        got: 2016-04-09 18:05:03.650576000 +0000

怎么会有所不同？在我的本地机器上传递

Answer 1

您可以改进测试结构。考虑使用模拟和存根而不是测试状态突变（或缺乏突变）：

it 'could not update question' do
    expect(Question).to_not receive(:update)  # Depending on how your model gets updated
    patch :update, id: question, question: attributes_for(:question, title: 'new valid title', body: 'new valid body'), format: :js
end

Answer 2

您可以使用ActiveSupport::Testing::TimeHelpers#travel

将其包含在rails_helper.rb中，如下所示：

RSpec.configure do |config|
include ActiveSupport::Testing::TimeHelpers
...

然后在测试中，使用travel_to Time.now来冻结时间。

Travis CI RSpec测试。比较保持相同时间的变量

2 个答案: