mock web access (http open) with webmock

gistfile1.rb

#In Gemfile:

group :test do
  gem 'webmock'
end

#In test class:

  def setup
    mock_file = Rails.root.join("test", "fixtures", "some_saved_website.html")

    stub_request(:get, /http:\/\/www.some_web.com\/*/).
      with(:headers => {'Accept'=>'*/*', 'User-Agent'=>'Ruby'}).
      to_return(:status => 200, :body => File.new(mock_file), :headers => {})
  end