[英]Testing assigns with ActiveModel in Rspec
使用Rspec 3.4,我有一个Message类:
class Message
include ActiveModel::Model
end
以下控制器规格失败:
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)
失败消息是:
Failure/Error: expect(assigns(:message)).to be_a_new(Message)
NoMethodError:
undefined method `new_record?' for #<Message:0x00000006dc8a88>
如此看来rspec调用new_record?
当我调用be_a_new(Message)
,由于我的Message类未从ActiveRecord继承,因此出现此错误。
如何测试assigns(:message)
确实是Message类的新实例?
我尝试了以下方法:
# 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)
那么这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
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