let $alg = $MTR_COMBINATIONS;

--echo #
--echo # Testing unloaded compression provider: $alg
--echo #

--echo # Innodb_have_$alg reflects that the provider is not loaded
eval SHOW GLOBAL STATUS WHERE Variable_name = "Innodb_have_$alg";

--echo # Innodb_compression_algorithm cannot be set to $alg
error ER_WRONG_VALUE_FOR_VAR;
eval SET GLOBAL Innodb_compression_algorithm = $alg;
show warnings;