ruby-on-rails – 失败/错误：预期：任何争论1次,收到：任何参数

require 'spec_helper'

describe User do 

  let(:username) {"test@test.com"}
  let(:password) {"123"}
  let(:code) {"0"}

  context "when signing in" do
    let(:expected_results) { {token:"123"}.to_json }

    it "should sign in" do 
      expect(User).to receive(:login).with({email: username,password: password,code: code})
        .and_return(expected_results)
    end

  end    
end

当我尝试运行我的测试用例时,我得到以下错误.

Failure/Error: expect(User).to receive(:login).with({email: username,code: code})
       (<User (class)>).login({:email=>"test@test.com",:password=>"123",:code=>"0"})
           expected: 1 time with arguments: ({:email=>"test@test.com",:code=>"0"})
           received: 0 times