Ruby-on-rails 正在渲染的 Rspec 测试模板

Rspec testing templates being rendered

提问by Sid

Im trying to test a condition where on successful signup a Success Template is rendered by the following controller code

我正在尝试测试成功注册成功模板由以下控制器代码呈现的条件

def create
    @user = User.new(params[:user])
    if @user.save
      render :template => "success"
    else
      flash[:notice] = "Oops Somethings not quite right! :("
      render :action => "new"
    end
  end

I am using the following spec to test out this code

我正在使用以下规范来测试此代码

 before(:each) do
    @user = User.new
    @user.attributes = valid_attributes    
    @params = valid_attributes
    @user.stub!(:save).and_return(true)
  end


  def do_post
    post :create
  end


  it "should create new user " do
    count = User.count
    do_post
    user = User.new(@params)    
    user.save.should eql(true)
    User.count.should eql(count + 1)

  end

  it "should render the success page on successful signup" do
    do_post
    @user.save
    response.should render_template("success") if @user.save
  end

But the example fails "it should render success page on successful signup" with this error message

但是示例失败“它应该在成功注册时呈现成功页面”并显示此错误消息

1)
'UsersController handling POST /users should render the success page on successful signup' FAILED
expected "success", got "users/new.html.erb"
./spec/controllers/users_controller_spec.rb:67:

The success view is an template stored in the views/users/ without an action. Im guessing im making a very fundamental mistake and would like some help .

成功视图是一个模板，存储在 views/users/ 中，没有任何动作。我猜我犯了一个非常根本的错误，需要一些帮助。

回答by Simone Carletti

You are stubbing the @uservariable in the test, but the controller will instantiate a new instance so the stub won't be in place.

您@user在测试中存根变量，但控制器将实例化一个新实例，因此存根不会就位。

It's not a good idea to use a stub in this case just to emulate a successful save call. Why don't you supply valid data instead and make sure the action is successful?

在这种情况下使用存根来模拟成功的保存调用并不是一个好主意。为什么不提供有效数据并确保操作成功？

The following code is for RSpec > 2.1and it uses the expectsyntax.

以下代码适用于RSpec > 2.1，它使用expect语法。

before(:each) do
  @params = valid_attributes
end

it "should create new user" do
  @_before = User.count
  post :create, :user => @params

  expect(assigns(:user)).to_not be_new_record
  expect(User.count).to eq(@_before + 1)
end

it "should render the success page on successful signup" do
  post :create, :user => @params

  expect(response).to be_successful
  expect(response).to render_template("success")
end

Finally, change

最后，改变

render :template => "success"

to

到

render :action => "success"

For previous RSpec versions or if you have to use the shouldsyntax, use

对于以前的 RSpec 版本，或者如果您必须使用should语法，请使用

before(:each) do
  @params = valid_attributes
end

it "should create new user" do
  @_before = User.count
  post :create, :user => @params

  assigns(:user).should_not be_new_record
  User.count.should == (@_before + 1)
end

it "should render the success page on successful signup" do
  post :create, :user => @params

  response.should be_successful
  response.should render_template("success")
end