JSON view test example with shared _item.json partial

view_spec.rb

describe 'JSON view test' do
  let(:partial) { 'admin/case_studies/_item.json' }
  let(:case_study) { build_stubbed(:case_study) }

  it 'should render item partial' do
    JSON.parse(render_item_partial).should == {
      id: case_study.id,
      title: case_study.title,
      whatever: case_study.title
    }
  end

  describe 'admin/case_studies/show.json' do
    it 'should render item' do
      assign :case_study, case_study
      render
      JSON.parse(rendered).should == JSON.parse(render_item_partial)
    end
  end

  describe 'admin/case_studies/index.json' do
    it 'should render items array' do
      assign :case_studies, [case_study, case_study]
      render
      JSON.parse(rendered).should == JSON.parse("[#{render_item_partial},#{render_item_partial}]")
    end
  end

  def render_item_partial
    render :partial => partial, :locals => { :case_study => case_study }
    rendered
  end
end