1. A tool for generating a test script for testing at least a portion of a computer application, said test script comprising: a first verification point adapted to output a first result indicative of a first test of said computer application; a second verification point adapted to output a second result indicative of a second test of said computer application; and an arbiter facility adapted to output result data using at least one of said first and second results, said arbiter facility explicitly expressing a formula valuing at least one of said first and second results.