/usr/lib/mysql-testsuite/r/server_uuid.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 10 11 12 13 14 15 16 17 18 19 | CALL mtr.add_suppression("Master's UUID has changed, its old UUID is");
# Case 1:
# @@SERVER_UUID is readonly.
-----------------------------------------------------------------------------
SET GLOBAL SERVER_UUID= UUID();
ERROR HY000: Variable 'server_uuid' is a read only variable
# Case 2:
# If the file does not exists, mysqld generates it automatically.
-----------------------------------------------------------------------------
# Case 3:
# If there is no UUID in the file, mysqld generates it automatically.
-----------------------------------------------------------------------------
# Case 4:
# If there is a UUID in the file, it will be loaded into SERVER_UUID.
-----------------------------------------------------------------------------
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