/usr/share/cups/ipptool/ is in cups-client 1.7.5-11+deb8u2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/cups/ipptool/create-printer-subscription.test
/usr/share/cups/ipptool/get-completed-jobs.test
/usr/share/cups/ipptool/get-jobs.test
/usr/share/cups/ipptool/get-notifications.test
/usr/share/cups/ipptool/get-printer-attributes.test
/usr/share/cups/ipptool/get-subscriptions.test
/usr/share/cups/ipptool/ipp-1.1.test
/usr/share/cups/ipptool/ipp-2.0.test
/usr/share/cups/ipptool/ipp-2.1.test
/usr/share/cups/ipptool/ipp-2.2.test
/usr/share/cups/ipptool/ipp-everywhere.test
/usr/share/cups/ipptool/print-job-deflate.test
/usr/share/cups/ipptool/print-job-gzip.test
/usr/share/cups/ipptool/print-job.test
/usr/share/cups/ipptool/validate-job.test