Question

使用RSpec的`before（：all）'块时，我遇到了范围问题。

以前我使用的是before(:each)，效果很好：

module ExampleModule

    describe ExampleClass

        before(:each) do

            @loader = Loader.new

        end

        ...


       context 'When something' do


            before(:each) do
                puts @loader.inspect # Loader exists
                # Do something using @loader
            end

            ...

        end

    end

end

但是在（：all）之前切换嵌套的before(:each) block to意味着加载器是nil：

module ExampleModule

    describe ExampleClass

        before(:each) do

            @loader = Loader.new

        end

        ...


        context 'When something' do


            before(:all) do
                puts @loader.inspect # Loader is nil
                # Do something using @loader
            end

            ...

         end

    end

end

那么为什么@loader nil在before（：all）块中，而不是在before（：each）块中？

Answer 1

所有:all块都发生在任何:each块之前：

describe "Foo" do
  before :all do
    puts "global before :all"
  end

  before :each do
    puts "global before :each"
  end

  context "with Bar" do
    before :all do
      puts "context before :all"
    end

    before :each do
      puts "context before :each"
    end

    it "happens" do
      1.should be_true
    end

    it "or not" do
      1.should_not be_false
    end
  end
end

输出：

rspec -f d -c before.rb

Foo
global before :all
  with Bar
context before :all
global before :each
context before :each
    happens
global before :each
context before :each
    or not

Answer 2

根据Rspec documentation on hooks，before :all挂钩在before :each之前运行。

块范围之前的Rspec不一致

2 个答案: