/usr/lib/mysql-testsuite/suite/funcs_2/ is in mysql-testsuite-5.6 5.6.16-1~exp1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/mysql-testsuite/suite/funcs_2/charset/
/usr/lib/mysql-testsuite/suite/funcs_2/charset/charset_master.test
/usr/lib/mysql-testsuite/suite/funcs_2/data/
/usr/lib/mysql-testsuite/suite/funcs_2/data/charset_utf8.txt
/usr/lib/mysql-testsuite/suite/funcs_2/include/
/usr/lib/mysql-testsuite/suite/funcs_2/include/check_charset.inc
/usr/lib/mysql-testsuite/suite/funcs_2/include/check_charset_ucs2.inc
/usr/lib/mysql-testsuite/suite/funcs_2/include/check_charset_utf8.inc
/usr/lib/mysql-testsuite/suite/funcs_2/lib/
/usr/lib/mysql-testsuite/suite/funcs_2/lib/gen_charset_utf8.pl
/usr/lib/mysql-testsuite/suite/funcs_2/r/
/usr/lib/mysql-testsuite/suite/funcs_2/r/innodb_charset.result
/usr/lib/mysql-testsuite/suite/funcs_2/r/memory_charset.result
/usr/lib/mysql-testsuite/suite/funcs_2/r/myisam_charset.result
/usr/lib/mysql-testsuite/suite/funcs_2/readme.txt
/usr/lib/mysql-testsuite/suite/funcs_2/t/
/usr/lib/mysql-testsuite/suite/funcs_2/t/disabled.def
/usr/lib/mysql-testsuite/suite/funcs_2/t/innodb_charset.test
/usr/lib/mysql-testsuite/suite/funcs_2/t/memory_charset.test
/usr/lib/mysql-testsuite/suite/funcs_2/t/myisam_charset.test
/usr/lib/mysql-testsuite/suite/funcs_2/t/suite.opt