Failing Webmock rspec test

failing_spec.rb

describe 'making requests to SNS API' do

  before :each do
    AmazeSNS.akey = '123456'
    AmazeSNS.skey = '123456'
    @time_stub = stub("Time")
    
    WebMock.reset!
    WebMock.disable_net_connect!
    
    @url = 'http://sns.us-east-1.amazonaws.com:80/?Action=CreateTopic&Signature=t8VXbA2gjfYwaBO9C9MtySwGjUphjhtgNBUZBxbuOrU%3D&Name=MyTopic&AWSAccessKeyId=123456&Timestamp=123&SignatureVersion=2&SignatureMethod=HmacSHA256'
  end
  
  it 'should send data to the API' do
    @time_stub.should_receive(:iso8601).and_return(123)
    Time.stub(:now).and_return(@time_stub)

    
    data = <<-RESPONSE.gsub(/^ +/, '')
      <CreateTopicResponse xmlns="http://sns.amazonaws.com/doc/2010-03-31/">
        <CreateTopicResult>
          <TopicArn>arn:aws:sns:us-east-1:365155214602:MyTopic</TopicArn>
        </CreateTopicResult>
        <ResponseMetadata>
          <RequestId>0a7225aa-e9cb-11df-a5a1-293a0b8d0fcb</RequestId>
        </ResponseMetadata>
      </CreateTopicResponse>
    RESPONSE
    
    EM.run{
      stub_http_request(:get, "http://sns.us-east-1.amazonaws.com:80").with(:query=>{"Query" => "CreateTopic","Signature" => "t8VXbA2gjfYwaBO9C9MtySwGjUphjhtgNBUZBxbuOrU%3D", "Name" => "MyTopic","AWSAccessKeyId" => "123456", "Timestamp" => "123","SignatureVersion" => "2","SignatureMethod" => "HmacSHA256"}).to_return(:status => 200,:body => data)

      @arn = AmazeSNS["MyTopic"].create
      WebMock.should have_requested(:get, %r{http://sns.us-east-1.amazonaws.com:80})
      EM.stop
    }
  end
  
end