使用Rspec 3.4,我得到了一个消息类:
class Message
include ActiveModel::Model
end
以下控制器规范失败:
context "with invalid params" do
it "assigns a newly created but unsaved message as @message" do
post :create, { message: @invalid_attributes }
expect(assigns(:message)).to be_a_new(Message)
故障信息为:
Failure/Error: expect(assigns(:message)).to be_a_new(Message)
NoMethodError:
undefined method `new_record?' for #<Message:0x00000006dc8a88>
因此,当我调用be_a_new(Message)
时,rspec似乎调用了new_record?
,并且由于我的Message类不是从ActiveRecord继承的,所以我收到了这个错误。
如何测试assigns(:message)
是否确实是Message类的新实例
我试过以下几种:
# this works, but I don't like it
expect(assigns(:message).to_not be(nil)
# these fail because the instances are not equal
expect(assigns(:message).to eq(Message.new)
expect(assigns(:message).to eql(Message.new)
expect(assigns(:message).to eqeul(Message.new)
expect(assigns(:message).to be(Message.new)
这样做是一种卑鄙的方式吗?
我认为您应该尝试以下操作:
expect( assigns(:message) ).to be_kind_of Message