Question

我在ApplicationHelper中有这个方法：

def home_link_class
  classes = ['navbar-brand']
  classes << 'active' if request.path == root_path
  classes
end

我想这样测试一下：

describe '#home_link_class' do
  before  { allow(helper.request).to receive(:path).and_return '/some-path' }
  subject { home_link_class }

  it { should eq ['navbar-brand'] }
end

遗憾的是，存根似乎不起作用，帮助程序本身的request对象设置为nil，即使在规范中它似乎是ActionController::TestRequest对象

如何确保规范中有request？

Answer 1

您需要存根请求本身以及路径的返回值。为存根path：

的请求定义测试双精度

describe '#home_link_class' do
  let(:request) { double('request', path: '/some-path') }

  before  { allow(helper).to receive(:request).and_return(request) }
  subject { home_link_class }

  it { should eq ['navbar-brand'] }
end

RSpec＆amp; Rails：帮助规范的Stub request.path

1 个答案: