エラーの直し方がわかりません。

railsチュートリアルの10.2.2をやっていて出たエラーを検索してみたり翻訳にかけてみたりと試行錯誤してみたのですが、初心者すぎるが故に解決できませんでした。
このエラーコードの直し方をご存知の方ご教授願います。

Failure:
UsersControllerTest#test_should_redirect_edit_when_logged_in_as_wrong_user [/home/vagrant/ruby_lessons/piano_massage/test/controllers/users_controller_test.rb:30]:
Expected response to be a <3XX: redirect>, but was a <200: OK>

3XXリダイレクトとはどういう意味なんでしょうか？やはりよくわかりません。
ちなみにuser controllerとuser controller のテストのコードはこれです。

class UsersController < ApplicationController
  before_action :logged_in_user, only: [:edit, :update]
  before_action :current_user, only: [:edit,:update]
  def show
    @user = User.find(params[:id])
  end

  def new
    @user = User.new
  end

  def create
    @user = User.new(user_params)
    if @user.save
      log_in @user
      flash[:success] = "祝登録完了！ 楽しんでね"
      redirect_to @user
    else
      render'new'
    end
  end

  def edit
    @user =User.find(params[:id])
  end

  def update
    @user = User.find(params[:id])
    if @user.update_attributes(user_params)
      flash[:success] = "Profile updated"
      redirect_to @user
    else
      render 'edit'
    end
  end

  private

    def user_params
      params.require(:user).permit(:name,:email,:password,:password_confirmation)
    end

    def logged_in_user
  unless logged_in?
    flash[:danger] = "ログインしてね"
    redirect_to login_url
  end
end

def corrent_user
  @user = User.find(params[:id])
  redirect_to(root_url) unless @user == current_user
end
  end

require 'test_helper'

class UsersControllerTest < ActionDispatch::IntegrationTest
  def setup
  @user = users(:michael)
  @other_user = users(:archer)
end

  test "should get new" do
    get signup_path
    assert_response :success
  end

  test "should redirect edit when not logged in" do
    get edit_user_path(@user)
    assert_not flash.empty?
    assert_redirected_to login_url
  end

  test "should redirect update when not logged in" do
    patch user_path(@user),params: {user:{name: @user.name,email:@user.email}}
    assert_not flash.empty?
    assert_redirected_to login_url
  end

  test "should redirect edit when logged in as wrong user" do
  log_in_as(@other_user)
  get edit_user_path(@user)
  assert flash.empty?
  assert_redirected_to root_url
end

test "should redirect update when logged in as wrong user" do
  log_in_as(@other_user)
  patch user_path(@user), params: { user: { name: @user.name,
                                            email: @user.email } }
  assert flash.empty?
  assert_redirected_to root_url
end
end