Rspec的规格上的更新操作失败

Question

我有以下要求规范

it "updates an open time" do 
    # Create an OpenTime 
    open_time = OpenTime.create(:start_time => (Time.now + 2.hours), :end_time => (Time.now + 10.hours)) 
    # Build an open_time update param 
    params = {:open_time => {:start_time => (Time.now + 5.hours)}} 
    # Send param to open_times#update 
    put open_time_path(open_time.id) , params 
    # Check to see if OpenTime was updated 
    open_time.should_receive(:update_attributes).with({:start_time => (Time.now + 5.hours)}) 
end 

这里是我的open_times控制器

def update 
    @open_time = OpenTime.find(params[:id]) 
    if @open_time.update_attributes(params[:open_time]) 
    flash[:success] = "Time updated." 
    redirect_to @open_time 
    else 
    render 'edit' 
    end 
end 

测试未能与预期：1好评：0

Answer 1

是不是那个会收到update_attributes的对象，而是由OpenTime.find返回的新对象，因此，您应该确保find返回您的对象：

OpenTime.stub(:find).and_return(open_time) 
open_time.should_receive(:update_attributes).with({:start_time => (Time.now + 5.hours)}) 

然后：

put open_time_path(open_time.id) , params 

additionaly，我将在测试开始时添加target_time = Time.now + 5.hours，然后使用PARAMS和匹配那个时候。

Answer 2

由于kr1注意到您必须存储OpenTime.find方法以便在从控制器调用OpenTime时返回您的OpenTime实例。改变你的测试代码：

it "updates an open time" do 
    target_time = (Time.now + 5.hours) 
    # Create an OpenTime 
    open_time = OpenTime.create(:start_time => (Time.now + 2.hours), :end_time => (Time.now + 10.hours)) 

    # Build an open_time update param 
    params = {:open_time => {:start_time => target_time}} 

    # Stub OpenTime to return your instance 
    OpenTime.stub(:find).and_return(open_time) 

    # Set expectation on open_time to receive :update_attributes 
    open_time.should_receive(:update_attributes).with({:start_time => target_time}) 

    # Send param to open_times#update 
    put open_time_path(open_time.id) , params 
end 

你说这是怎么发生的事情是，你建立你的OpenTime（OPEN_TIME）的实例，并通过测试框架的OpenTime类“如果有人打电话找到的OpenTime类不运行找到，但只需返回open_time（刚刚创建的实例）“。然后，在您的实例上设置期望值以接收：update_attributes。当你打电话把open_time_path（open_time.id），参数您的控制器创建动作将处理请求和OpenTime.find（...）将返回您的实例（open_time）并调用：update_attribute。

希望它是有道理的。