ruby - 使用 rspec 测试 after_create

Question

我的模型中有代码。

class Foo < ActiveRecord::Base
 after_create :create_node_for_foo

   def create_node_for_user
     FooBar.create(id: self.id)
   end
end

并且在 Foo 模型的 rspec 中有代码

describe Foo do

  let (:foo) {FactoryGirl.create(:foo)}

  subject { foo }
  it { should respond_to(:email) }
  it { should respond_to(:fullname) }

 it "have mass assignable attributes" do
  foo.should allow_mass_assignment_of :email
  foo.should allow_mass_assignment_of :fullname
 end

 it "create node in graph database" do
   foo1 = FactoryGirl.create(:foo)
   FooBar.should_receive(:create).with(id: foo1.id)
 end
end

但我的测试失败并显示消息

Failures:

   1) Foo create node in graph database on
      Failure/Error: FooBar.should_receive(:create).with(id: foo1.id)
      (<FooBar (class)>).create({:id=>18})
       expected: 1 time
       received: 0 times

可能出了什么问题？

Answer 1

好的解决了问题

改变了这个

 it "create node in graph database" do
  foo1 = FactoryGirl.create(:foo)
  FooBar.should_receive(:create).with(id: foo1.id)
end

到

 it "create node in graph database" do
  foo1 = FactoryGirl.build(:foo)
  FooBar.should_receive(:create).with(id: foo1.id)
  foo1.save
end