之前(:每个)与之前 [英] before(:each) vs just before

问题描述

我是 ruby​​ on rails 的新手.并进行测试

I am new to ruby on rails. And playing around with testing

有区别吗

before(:each) do 
  #some test code
end

和

before do
  #some test code
end

推荐答案

before 方法接受一个 scope 参数，默认为 :each.当你省略它时，它暗示你的意思是 :each，所以你的两个例子做的完全一样.

The before method accepts a scope parameter that defaults to :each. When you leave it out, it's implied that you mean :each, so your two examples do the exact same thing.

这是来自 RSpec RDoc 的有用花絮，模块:RSpec::Core::Hooks#before:

Here is a helpful tidbit from the RSpec RDoc, Module: RSpec::Core::Hooks#before:

参数:

• 范围(符号)——:each、:all 或 :suite (默认为 :each)
• conditions (Hash) — 将此钩子限制为匹配这些条件的示例，例如before(:each, :ui => true) { ... } 将只与使用 :ui => 声明的示例或组一起运行.真的.

• scope (Symbol) — :each, :all, or :suite (defaults to :each)
• conditions (Hash) — constrains this hook to examples matching these conditions e.g. before(:each, :ui => true) { ... } will only run with examples or groups declared with :ui => true.

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