Mocking web requests when running specs in Guard only. If you run them through rspec (without setting the RSPEC_ENV environment variable to "guard") it will make the full web request.

Guardfile

guard 'rspec', :env => {'RSPEC_ENV' => 'guard'} do
 # ...
end

some_spec.rb

require 'spec_helper'

describe SomeSpec do
  describe '#method' do
    it 'retrieves results when searching for a last name',
      :webmock => 'spec/mocks/some-mock.html' do

      response = Net::HTTP.get("www.example.com", "/")
      response.content.should include("some string)

    end
  end
end

spec_helper.rb

require 'webmock/rspec'

RSpec.configure do |config|
  # ...

  config.before(:suite) do
    if ENV['RSPEC_ENV'] == 'guard'
      WebMock.disable_net_connect!
    else
      WebMock.allow_net_connect!
    end
  end

  config.around(:each) do |test|
    if ENV['RSPEC_ENV'] == 'guard' and test.metadata[:webmock]
      stub_request(:any, 'http://www.example.com').
        to_return(
          :body => File.new(test.metadata[:webmock]),
          :headers => {
            'Content-Type' => 'text/html; charset=UTF-8'
          }
        )
    end

    test.run

    if ENV['RSPEC_ENV'] == 'guard' and test.metadata[:webmock]
      WebMock.reset!
    end
  end
end