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mariadb/mysql-test/suite/plugins/t/feedback_plugin_load.test
Sergei Golubchik 726162989b feedback plugin debug
make it possible to change feedback plugin wait intervals
* only in debug builds
* and force the feedback report to be ignored

update the test to use this feature
2015-11-18 11:23:15 +01:00

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if (`select count(*) = 0 from information_schema.plugins where plugin_name = 'feedback' and plugin_status='active'`)
{
--skip Feedback plugin is not active
}
select plugin_status from information_schema.plugins where plugin_name='feedback';
# Every SELECT from INFORMATION_SCHEMA.FEEDBACK increases the value of 'FEEDBACK used'.
# We cannot record the actual value, because the test can be executed more than once,
# but we can check that the value indeed increases as expected.
# There is still a room for some race condition, e.g. if at the very moment
# between first SELECT to store the value and the next SELECT to check that it increases,
# the feedback plugin is activated. But the probability of it is close to 0,
# so lets get back to it if it ever happens.
# Lets say the plugin was used X times before this SELECT
SELECT variable_value INTO @feedback_used FROM information_schema.feedback where variable_name = 'FEEDBACK used';
# Now $feedback_used == X+1, and 'FEEDBACK used' is also X+1. And variable_value is increased again when we run the next SELECT
SELECT variable_value = @feedback_used + 1 FROM information_schema.feedback where variable_name = 'FEEDBACK used';
# Now when we are happy with 'FEEDBACK used', we can check everything else
--replace_result https http
--sorted_result
select * from information_schema.feedback where variable_name like 'feed%'
and variable_name not like '%_uid' and variable_name not like 'FEEDBACK used'
and variable_name not like '%debug%';