US Patent 8448146 Generation of functional tests for re-hosted applications

A system and method for generating functional tests to verify code migrated from a first host to a second host. In one embodiment, source code is analyzed in order to generate functional tests that can be used for testing the re-hosted application. In particular, user-input scenarios are extracted from the source code and system output responses are determined based on the user-input scenarios. Functional tests can then be generated using the extracted user-input scenarios and output responses to ensure that the re-hosted application responds in a like manner.