Question

在RSpec（精炼主题）中定义当前范围的主题时，如何访问父范围的主题？

示例代码：

describe MyModule.method(:some_method) do

  context "when called with a String" do
    let(:string) { "Hey there!" }

    # I want to refine the subject using the parent scope's subject - common case
    # is applying a subject method. Something like:
    subject { super.subject.call string }

    # Use subject...

  end # when called with a String

end # MyModule.some_method

Answer 1

好的，从上面的评论中归功于@mudasobwa，这是解决方案：

你需要使用明确地调用super()没有参数 - super单独行不通，因为它试图使用Ruby的隐式传递参数而失败。

更正示例：

describe MyModule.method(:some_method) do

  context "when called with a String" do
    let(:string) { "Hey there!" }

    # Note the explicit `()`:
    subject { super().call string }

    # Use subject...

  end # when called with a String

end # MyModule.some_method

Answer 2

你可以为你的主题命名：

context do 
  subject(:my_thing) { described_class.new }

  context '#do_stuff'
    subject { my_thing.do_stuff }

    it { expect(subject).to ... } # or
    it { is_expected.to ... }
  end
end

访问RSpec中的父范围主题？

2 个答案: