如何在 rspec 测试中定义一个可由辅助函数访问的简单全局变量

问题描述

我不知道如何在 rspec 测试中使用简单的全局变量.这似乎是一个微不足道的功能，但经过多次护目镜，我还没有找到解决方案.

I cant figure out how to use a simple global variable in an rspec test. It seems like such a trivial feature but after much goggleing I havent been able to find a solution.

我想要一个可以在整个主规范文件和辅助规范文件中的函数中访问/更改的变量.

I want a variable that can be accessed/changed throughout the main spec file and from functions in helper spec files.

这是我目前所拥有的:

require_relative 'spec_helper.rb'
require_relative 'helpers.rb'
let(:concept0) { '' }

describe 'ICE Testing' do
    describe 'step1' do
    it "Populates suggestions correctly" do
         concept0 = "tg"
         selectConcept() #in helper file. Sets concept0 to "First Concept"
         puts concept0  #echos tg?? Should echo "First Concept"
    end
 end

.

 #helpers.rb
 def selectConcept
      concept0 = "First Concept"
 end

有人能指出我遗漏了什么，或者使用let"是完全错误的方法吗?

Can someone point out what I am missing or if using "let" is totally the wrong method?

推荐答案

考虑使用具有实例变量的全局 before 钩子:http://www.rubydoc.info/github/rspec/rspec-core/RSpec/Core/Configuration

Consider using a global before hook with an instance variable: http://www.rubydoc.info/github/rspec/rspec-core/RSpec/Core/Configuration

在您的 spec_helper.rb 文件中:

In your spec_helper.rb file:

RSpec.configure do |config|
  config.before(:example) { @concept0 = 'value' }
end

然后@concept0 将在您的示例 (my_example_spec.rb) 中设置:

Then @concept0 will be set in your examples (my_example_spec.rb):

RSpec.describe MyExample do
  it { expect(@concept0).to eql('value') } # This code will pass
end

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