RSpec中的mock和mock_model有什么区别

了解RSpec中的mock和mock_model

ruby
class Order
  def total
    # 实际计算总价的逻辑
  end
end
RSpec.describe Order do
  it "should calculate the total" do
    order = double("order")
    allow(order).to receive(:total).and_return(100)
    
    expect(order.total).to eq(100)
  end
end

ruby
class User < ActiveRecord::Base
  validates_presence_of :name
end
RSpec.describe UsersController do
  it "should create a new user" do
    user = mock_model(User)
    allow(User).to receive(:new).and_return(user)
    
    post :create, user: { name: "John" }
    
    expect(assigns(:user)).to eq(user)
  end
end