railsチュートリアル7章エラーについて

railsチュートリアル7章についてrails test時のエラーが解決できません。どなたかご教授、ご意見頂けますと幸いです。
問題点が未把握な状態ですので、問題点及びその解決法を知りたいです。宜しくお願い致します。

ubuntu:~/environment/sample_app (main) $ rails test
Running via Spring preloader in process 5210
Run options: --seed 63281

# Running:

.....E

Error:
UsersSignupTest#test_invalid_signup_information:
NameError: undefined local variable or method `user_params' for #<UsersController:0x00560ed52c4400>
Did you mean?  user_path
    app/controllers/users_controller.rb:12:in `create'
    test/integration/users_signup_test.rb:8:in `block (2 levels) in <class:UsersSignupTest>'
    test/integration/users_signup_test.rb:7:in `block in <class:UsersSignupTest>'


rails test test/integration/users_signup_test.rb:5

E

Error:
UsersSignupTest#test_valid_signup_information:
NameError: undefined local variable or method `user_params' for #<UsersController:0x00560ed53fd448>
Did you mean?  user_path
    app/controllers/users_controller.rb:12:in `create'
    test/integration/users_signup_test.rb:23:in `block (2 levels) in <class:UsersSignupTest>'
    test/integration/users_signup_test.rb:22:in `block in <class:UsersSignupTest>'


rails test test/integration/users_signup_test.rb:20

上記エラーに対し、該当ファイルを載せますので併せてご確認下さい。
統合テストファイル名：users_signup_test.rb

require 'test_helper'

class UsersSignupTest < ActionDispatch::IntegrationTest
 
 test "invalid signup information" do
    get signup_path
    assert_no_difference 'User.count' do
      post users_path, params: { user: { name:  "",
                            email: "user@invalid",
                            password:              "foo",
                            password_confirmation: "bar" } }
    end
    assert_template 'users/new'
    assert_select 'div#<CSS id for error explanation>'
    assert_select 'div.<CSS class for field with error>'
  end



  test "valid signup information" do
    get signup_path
    assert_difference 'User.count', 1 do
      post users_path, params: { user: { name:  "Example User",
                            email: "user@example.com",
                            password:              "password",
                            password_confirmation: "password" } }
    end
    follow_redirect!
    assert_template 'users/show'
     assert_not flash.FILL_IN
  end
end

コントローラーファイル名：users_controller.rb

class UsersController < ApplicationController
  def show 
    @user = User.find(params[:id])
    debugger
  end
  
  
  def new
    @user = User.new
  end
  def create
    @user = User.new(user_params)

    if @user.save
      
      redirect_to @user
    else
      render 'new'
    end
  private

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

def createのend位置を修正後さらに下記のエラーが発生致しました。

ubuntu:~/environment/sample_app (main) $ rails test
Running via Spring preloader in process 5733
Run options: --seed 14035

# Running:

.E

Error:
UsersSignupTest#test_invalid_signup_information:
Nokogiri::CSS::SyntaxError: unexpected '#' after '[#<Nokogiri::CSS::Node:0x0000556852973a50 @type=:ELEMENT_NAME, @value=["div"]>]'
    (eval):3:in `_racc_do_parse_c'
    (eval):3:in `do_parse'
    test/integration/users_signup_test.rb:14:in `block in <class:UsersSignupTest>'


rails test test/integration/users_signup_test.rb:5

E

Error:
UsersSignupTest#test_valid_signup_information:
ActionView::Template::Error: undefined local variable or method `options' for #<ActionView::Base:0x007ff1f85073b8>
Did you mean?  url_options
    app/helpers/users_helper.rb:3:in `gravatar_for'
    app/views/users/show.html.erb:6
    test/integration/users_signup_test.rb:28:in `block in <class:UsersSignupTest>'


rails test test/integration/users_signup_test.rb:20

..........

Finished in 1.221876s, 10.6394 runs/s, 22.0972 assertions/s.
13 runs, 27 assertions, 0 failures, 2 errors, 0 skips

こちらに関しまして、問題点を分かりやすくご教示頂けますと幸いです。また解決策もございましたら宜しくお願い致します。