未能通过 rspec 测试

Question

我有这个class:

class Zombie < ActiveRecord::Base
  attr_accessible :iq
  validates :name, presence: true

  def genius?
    iq >= 3
  end

  def self.genius
    where("iq >= ?", 3)
  end
end

我正在做 rspec 测试：

describe Zombie do
  context "with high iq" do
     let!(:zombie) { Zombie.new(iq: 3, name: 'Anna') }
     subject { zombie }

     it "should be returned with genius" do
       Zombie.genius.should include(zombie)
     end

     it "should have a genius count of 1" do
       Zombie.genius.count.should == 1 
     end
  end
end

我收到此错误消息：

Failures:

1) Zombie with high iq should have a genius count of 1
Failure/Error: Zombie.genius.count.should == 1
expected: 1
got: 0 (using ==)
# zombie_spec.rb:11:in `block (3 levels) '

Finished in 0.2138 seconds
2 examples, 1 failure

Failed examples:

rspec zombie_spec.rb:10 # Zombie with high iq should have a genius count of 1

我使用的语法是：let!(:zombie){...} 但它告诉我当我期望 1 时得到 0。有什么想法吗？也许我花了很多时间查看这段代码，但我没有看到问题出在哪里。

Answer 1

您需要 Zombie.create 而不是 Zombie.new。

此外，should 语法已弃用：

specify ".genius returns an array of zombies" do
  expect(Zombie.genius).to include(zombie)
end

Answer 2

我觉得这条线

let!(:zombie) { Zombie.new(iq: 3, name: 'Anna') }

应该是

let!(:zombie) { Zombie.create(iq: 3, name: 'Anna') }

为什么？因为 create 确保将僵尸实例保存到数据库中，所以当您查询 iq >= 3 时，您会得到一个僵尸实例。 new 我相信只保留僵尸实例在内存中。

未能通过 rspec 测试

Lost trying to make the rspec test pass

ruby

testing

rspec

ruby-on-rails

rspec2