Question

我有以下内容：

  test "should update deal" do
    patch user_deal_url(@user, @deal), params: { deal: { name: @deal.name+'xxx' } }
    # p @response.body
    # p @deal.errors.full_messages
    assert_select ".alert", false   # should not have alert
    assert_redirected_to dashboard_url
    follow_redirect!
    assert_select ".alert", "Deal was successfully updated."
  end

它只说：

Failure:
DealsControllerTest#test_should_update_deal [C:/Users/Chloe/workspace/test/controllers/deals_controller_test.rb:73]:
Expected response to be a <3XX: redirect>, but was a <200: OK>

我以为我可以打印@deal.errors.full_messages，但它与控制器中的@deal不同。我能够打印整个响应正文并将其复制到Notepad ++中并搜索错误消息，但它太乏味了。我以为我可以断言.alert不存在，它会告诉我它到底是什么。我添加了

assert_select "#error_explanation", false   # should not have error

但那只告诉我它存在，而不是它失败的原因。

Expected exactly 0 elements matching "#error_explanation", found 1..
Expected: 0
  Actual: 1

那么如何快速确定模型在测试期间无法在控制器中保存或更新的原因？

Rails 5.0.2

参考：http://guides.rubyonrails.org/testing.html

我的解决方案导致后续的assert_select语句失败！只让puts css_select('#error_explanation')使最后一个assert_select失败，但将其评论出来会使其成功。为什么呢？

我同时输入了一个Rails错误：https://github.com/rails/rails/issues/29367

Answer 1

我能够放

    puts css_select('#error_explanation')

在put / patch之后，它会打印

# Running:

<div id="error_explanation">
<h2>
2 errors
prohibited this deal from being saved:
</h2>
<ul>
<li>Size can't be blank</li>
<li>Size is not a number</li>
</ul>
</div>
F

Failure:

我仍然在寻找更好的东西，因为留下这一行导致后续assert_select失败！

确定集成测试失败原因的最快方法是什么？

1 个答案: