rspec 命令行变量输入 [英] rspec commandline variable input

问题描述

我有一个 ruby​​ 脚本，我正在尝试使用 rspec 进行测试.有没有办法将变量传递给命令行(即通过 rspec 输入键盘数据以获取")

I have a ruby script I'm trying to test with rspec. Is there a way to pass variables to the commandline (ie enter keyboard data via rspec to "gets")

示例:

username = gets.chomp

推荐答案

你可以存根 Kernel#gets，除了它混入对象中，所以存根在那里:

You can stub Kernel#gets, except that it is mixed into the object, so stub it there:

class Mirror
  def echo
    print "enter something: "
    response = gets.chomp
    puts "#{response}"
  end
end

require 'rspec'

describe Mirror do
  it "should echo" do
    @mirror = Mirror.new
    @mirror.stub!(:gets) { "phrase\n" }
    @mirror.should_receive(:puts).with("phrase")
    @mirror.echo
  end
end

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