Rspec showing savon_spec is unable to work with a class which extends Savon::Model

savon_model_spec_fail.rb

require 'rspec'
require 'savon_spec'

RSpec.configure do |config|
  config.include Savon::Spec::Macros
end

describe 'with client' do

  let(:client) do
    Savon::Client.new do
      wsdl.endpoint = "http://service.example.com"
      wsdl.namespace = "http://users.service.example.com"
    end
  end

  before do
    savon.expects(:get_user)
  end

  it 'mocks a SOAP request' do
    client.request(:get_user)
  end

end

class ExtendsSavonModel
  extend Savon::Model
  document "http://service.example.com?wsdl"

  def self.get_user_class
    client.request(:get_user)
  end

  def get_user_instance
    client.request(:get_user)
  end
end

describe 'with model' do

  before do
    savon.expects(:get_user)
  end

  it 'mocks a SOAP request for an instance method' do
    ExtendsSavonModel.get_user_class
  end

  it 'mocks a SOAP request for an class method' do
    ExtendsSavonModel.new.get_user_instance
  end

end

Did you ever figure out how to fix this?