Question

我想知道,如何验证当地人为控制器提供模版而通过的地方。

主计长:

def lelf_panel
  # ...
  if some_condition
    locals_hash = some_very_long_hash_A
  else
    locals_hash = some_very_long_hash_B
  end
  render :partial => "left_panel", :layout => false, :locals => locals_hash
end

现有光谱:

it  should render correct template for lelf_panel  do
  # ... 
  get  left_panel 
  response.should render_template( system/_left_panel )
end

现在,我需要为这一控制员完成Rcov的工作,因此,我需要增加/修改光谱,以涵盖某些特定结果。我愿证实,“Elf_panel”的当地人转来了,因为如果我只证实这一错误,那么这两种结果的部分页就相同。

I check the render_template in rspec docs in http://rubydoc.info/gems/rspec-rails/2.8.1/RSpec/Rails/Matchers/RenderTemplate:render_template

它只是提供信息的第2段,因此,我如何检验当地人传递的信息?

Answer 1

我知道,没有办法直接审查当地人如何重新描述模板。

你们可以把当地人换成@ locals_hash,然后通过分配来审查结果(:当地人_hash)。

或者,如果当地人对网页名称有影响,则可以就由此产生的超文本使用挑选器,并检查某些指示性内容——例如,如果当地人对网页名称有影响,则检查由此产生的超文本页标题是你预期的。

Answer 2

您不使用<代码>render_template匹配器,而是可以使用对控制器标的的预期。

it  should render correct template for lefl_panel  do
  # ...
  allow(controller).to receive(:render).with no_args
  expect(controller).to receive(:render).with({
    :partial =>  system/_left_panel ,
    :layout  => false,
    :locals  => some_very_long_hash_A
  })
  get  left_panel 
end

Answer 3

Same as @ryan-ahearn s response with recommendations from @user2490003 s comment - but all put into some more Flex and for RSpec 3.

  # Safe to set globally, since actions can either render or redirect once or fail anyway
  before do
    allow(controller).to receive(:render).and_call_original
  end

  describe "get left panel" do
    before do
      # other setup
      get  left_panel 
    end

    it  should render correct template for lelf_panel  do
      # Sadly, render_template is primitive (no hash_including, no block with args, etc.)
      expect(subject).to render_template( system/_left_panel )
    end

    it  should render with correct local value  do
      expect(controller).to have_received(:render) do |options|
        expect(options[:locals][:key_from_very_long_hash]).to eq( value_of_key_from_very_long_hash )
      end
    end
  end

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