You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: omniauth_callbacks_controller_spec.rb
    path of file: ./repos/osem/spec/controllers/users
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'spec_helper'

describe Users::OmniauthCallbacksController do
  context 'email is not there in auth hash' do
    before do
      stub_env_for_omniauth
      get :google
    end

    it { expect(flash[:error]).to eq('Email field is missing in your google account') }
  end
end

def stub_env_for_omniauth
  request.env['devise.mapping'] = Devise.mappings[:user]
  env = OmniAuth::AuthHash.new(
                                provider:    'google',
                                uid:         'google-test-uid-1',
                                info:        {
                                  name:     'google user',
    
def stub_env_for_omniauth
  request.env['devise.mapping'] = Devise.mappings[:user]
  env = OmniAuth::AuthHash.new(
                                provider:    'google',
                                uid:         'google-test-uid-1',
                                info:        {
                                  name:     'google user',
                                  email:    nil,
                                  username: 'user_google'
                                },
                                credentials: {
                                  token:  'google_mock_token',
                                  secret: 'google_mock_secret'
                                }
  )
  request.env['omniauth.auth'] = env
  allow(@controller).to receive(:env).and_return(env)
end