/usr/lib/mysql-testsuite/r/lowercase_utf8.result is in percona-server-test-5.6 5.6.22-rel71.0-0ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | set names utf8;
create table `Ö` (id int);
show tables from test like 'Ö';
Tables_in_test (Ö)
ö
show tables from test like 'ö';
Tables_in_test (ö)
ö
drop table `Ö`;
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