请问rails的测试get这么写报错？

Question

这是我的ruby 和rails版本

require 'test_helper'

class SayControllerTest < ActionDispatch::IntegrationTest
  test "should get hello" do
    get say_hello_url
    assert_response :success
  end
  test "should say hello in json" do
    get say_hello_url
    assert_equal "{\"hello\":\"Rails!\"}", @response.body
  end
  test "should say hello in json" do
    get say_hello_url,{'user'=>"Join"}
    assert_equal "{\"hello\":\"Join!\"}", @response.body
  end
end

第三段代码报错

Answer 1

Join后面有一个有感叹号，有一个没有