得到NoM​​ethodError：未定义的方法`＆gt;＆＃39;为零：rspec中的NilClass

Question

def self.verify_the_order_of_channels(firstwebapp,secondwebapp,firstmobileapp,secondmobileapp)
  expect(firstmobileapp).to be > firstwebapp
  expect(firstmobileapp).to be >  secondwebapp
end

Answer 1

firstmobileapp正在nil传递，>未定义nil。你需要查看调用verify_the_order_of_channels的任何内容并查看它为什么通过nil，或者重写期望首先检查nil（当它为零时会出错，你和＃ 39; ll仍然要弄清楚为什么它被传递为nil）

def self.verify_the_order_of_channels(firstwebapp,secondwebapp,firstmobileapp,secondmobileapp)
  expect(firstmobileapp).not_to be_nil
  expect(firstmobileapp).to be > firstwebapp
  ...
end