rails 版本 5.2.2require '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 .bodyend test "should say hello in json" do get say_hello_url,{'user'=>"Join"} assert_equal "{\"hello\":\"Join!\"}", @ response .bodyend end