Question

我的测试没有成功创建指南，我无法理解原因。

guidelines_controller_test.rb中的测试是

test "should create guideline when logged in" do
sign_in users(:tester)
assert_difference('Guideline.count') do
  post :create, guideline: { content: @guideline.content, hospital: @guideline.hospital, title: @guideline.title }
end

我在guidelines_controller.rb中的创建操作是

def create
@guideline = Guideline.new(params[:guideline])

respond_to do |format|
  if @guideline.save
    format.html { redirect_to @guideline, notice: 'Guideline was successfully created.' }
    format.json { render json: @guideline, status: :created, location: @guideline }
  else
    format.html { render action: "new" }
    format.json { render json: @guideline.errors, status: :unprocessable_entity }
  end
end

端

当我尝试运行测试时失败

     1) Failure:
test_should_create_guideline_when_logged_in(GuidelinesControllerTest) [test/functional/guidelines_controller_test.rb:36]:
"Guideline.count" didn't change by 1.
<4> expected but was
<3>.

并且test.log显示（试图复制相关位）

 Processing by GuidelinesController#create as HTML
  Parameters: {"guideline"=>{"content"=>"www.test.com", "hospital"=>"Test Hospital", "title"=>"Test title"}}
  User Load (0.3ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 781720531 LIMIT 1
   (0.1ms)  SAVEPOINT active_record_1
  Guideline Exists (0.3ms)  SELECT 1 AS one FROM "guidelines" WHERE (LOWER("guidelines"."title") = LOWER('Test title') AND "guidelines"."hospital" = 'Test Hospital') LIMIT 1
   (0.1ms)  ROLLBACK TO SAVEPOINT active_record_1
  Rendered guidelines/_form.html.erb (256.5ms)
Completed 200 OK in 313ms (Views: 279.2ms | ActiveRecord: 0.8ms)
   (0.2ms)  SELECT COUNT(*) FROM "guidelines" 
   (0.1ms)  rollback transaction

有人可以帮忙吗？

Answer 1

看起来您正在尝试创建一个已存在的标题/医院组合的指南。你得到了正确的日志块 - 这一行：

Guideline Exists (0.3ms)  SELECT 1 AS one FROM "guidelines" WHERE [...]

是Rails确保不存在重复的指南（您可能在模型中有“唯一”验证）。它找到匹配项，因此它取消了保存事务：

(0.1ms)  ROLLBACK TO SAVEPOINT active_record_1

更改您要插入的标题和/或医院，它应该会很好。

修改

根据我们在评论中的对话，我认为问题如下：您正在使用@guideline初始化@guideline = guidelines(:one)，这会加载您在灯具文件中定义的名为“one”的指南

但是，当您开始在Rails中运行测试时，它会自动将所有灯具加载到测试DB中。因此，当您尝试使用@guideline中的属性制作新指南时，您保证会获得重复！

最简单的方法是在测试代码中定义新的属性：

post :create, guideline: { content: "This is my new content!", hospital: "Some Random Hospital", title: "Some Random Title" }

希望有所帮助！

测试创建状态失败

1 个答案: