Iván López is a Groovy and Grails developer who is a member of the Grails team at OCI. He coordinates the MadridGUG and organizes the Greach conference. As an experienced speaker, he presented on testing Java applications with Spock, an open source testing framework for Java and Groovy applications. Resources for Spock include its website, GitHub page, and documentation. Iván welcomed any questions from the audience.