RSpecのConfig#before(:all)メモ

Rspec勉強中。

テスト本体をこんな感じで書いてみます。

a_spec.rb

require 'spec_helper'

describe 'a spec' do
  before(:all) { puts "I'm before(:all) in 1st layer" }
  before(:each) { puts "I'm before(:each) in 1st layer" }

  describe '1st nested describe' do
    before(:all) { puts "I'm before(:all) in 1st nested describe" }
    before(:each) { puts "I'm before(:each) in 1st nested describe" }
    it { puts "I'm first it in 1st nested describe" }
    it { puts "I'm second it in 1st nested describe" }
  end

  describe '2nd nested describe' do
    before(:all) { puts "I'm before(:all) in 2nd nested describe" }
    before(:each) { puts "I'm before(:each) in 2nd nested describe" }
    it { puts "I'm first it in 2nd nested describe" }
    it { puts "I'm second it in 2nd nested describe" }
  end
end

そしてHelper。

spec_helper.rb

RSpec.configure do |config|
  config.before(:all) {
    puts "I'm before(:all) in configuration file."
  }
  config.before(:each) {
    puts "I'm before(:each) in configuration file."
  }
end

実行します。

I'm before(:all) on configuration file.
I'm before(:all) in 1st layer
I'm before(:all) in 1st nested describe
I'm before(:each) on configuration file.
I'm before(:each) in 1st layer
I'm before(:each) in 1st nested describe
I'm first it in 1st nested describe
.I'm before(:each) on configuration file.
I'm before(:each) in 1st layer
I'm before(:each) in 1st nested describe
I'm second it in 1st nested describe
.I'm before(:all) in 2nd nested describe
I'm before(:each) on configuration file.
I'm before(:each) in 1st layer
I'm before(:each) in 2nd nested describe
I'm first it in 2nd nested describe
.I'm before(:each) on configuration file.
I'm before(:each) in 1st layer
I'm before(:each) in 2nd nested describe
I'm second it in 2nd nested describe
.

Config#before(:each)は各Specのbefore(:each)のテスト単位と対応してるけど、
Config#before(:all)は実行の単位が対応しないんですねー。
Specのファイル単位で実行されている感じです。

a_spec.rb

require 'spec_helper'

describe 'a spec' do
  # config.before(:all) { puts "I'm before(:all) in configuration file." }　こんなイメージ
  before(:all) { puts "I'm before(:all) in 1st layer" }
  before(:each) { puts "I'm before(:each) in 1st layer" }

  describe '1st nested describe' do
    # ここで実行されるイメージだったけどされない
    before(:all) { puts "I'm before(:all) in 1st nested describe" } 
    before(:each) { puts "I'm before(:each) in 1st nested describe" }
    it { puts "I'm first it in 1st nested describe" }
    it { puts "I'm second it in 1st nested describe" }
  end

  describe '2nd nested describe' do
    # ここで実行されるイメージだったされない
    before(:all) { puts "I'm before(:all) in 2nd nested describe" }
    before(:each) { puts "I'm before(:each) in 2nd nested describe" }
    it { puts "I'm first it in 2nd nested describe" }
    it { puts "I'm second it in 2nd nested describe" }
  end
end