A method is provided for a proxy server to assist in the testing of a product. The method includes receiving, from the product, a first request and passing the first request to a server, receiving, from the server, a first response to the first request and passing the first response to the product, recording the first request and the first response, generating one or more second responses from one or more simulated servers based on the first request and the first response, intercepting a second request from the product, in response to the second request, matching the second request to a second response, and sending the second response to the product.