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firebird-qa/tests/bugs/core_3858_test.py

99 lines
2.9 KiB
Python

#coding:utf-8
#
# id: bugs.core_3858
# title: Very poor performance of SIMILAR TO on some arguments + unable to disconnect via DELETE FROM MON$ATTACHMENTS
# decription:
# Confirmed normal work (evaluation for less than 2 ms) on WI-T4.0.0.1598
# Note. Part of pattern: "[[:ALNUM:]\\_\\-]" -- looks strange but it is correct.
# And it should NOT be changed to somewhat like "[[:ALNUM:]]\\_\\-": previoud FB versions hanged exactly
# because of this "strange and wrong" pattern.
#
# tracker_id: CORE-3858
# min_versions: ['4.0']
# versions: 4.0
# qmid: None
import pytest
from firebird.qa import db_factory, isql_act, Action
# version: 4.0
# resources: None
substitutions_1 = []
init_script_1 = """"""
db_1 = db_factory(sql_dialect=3, init=init_script_1)
test_script_1 = """
set list on;
set count on;
set term ^;
execute block as
begin
rdb$set_context( 'USER_SESSION','DTS_START', cast('now' as timestamp) );
rdb$set_context( 'USER_SESSION','MAX_THRESHOLD_MS', 500 );
-- ^
-- |
-- #############################
-- MAX ALLOWED EXECUTION TIME,MS
-- #############################
end
^
set term ;^
select 1 as result from rdb$database where
'
group by
MATCODE,
MATNAME,
NOTE,
GROUPCODE,
STATE,
MATPROD,
MATFULL,
KOLVO,
EDIZM,
MATGRPCOD,
CODE,
TEXTTOHIST,
INV_ROOMDOC,
INV_ROOM,
PARENTCODE,
INVIS
'
similar to
'%group[[:WHITESPACE:]]+by[[:WHITESPACE:]]+([[:ALNUM:]]|_)+([[:WHITESPACE:]]*,[[:WHITESPACE:]]*[[:ALNUM:]]+){12,}[[:WHITESPACE:]]*%'
;
set count off;
select
iif( evaluated_ms <= max_allowed_ms
,'acceptable'
,'TOO LONG: ' || evaluated_ms || ' ms - this is more then threshold = ' || max_allowed_ms || ' ms'
) as duration
from (
select
datediff( millisecond from cast(rdb$get_context( 'USER_SESSION','DTS_START') as timestamp) to current_timestamp ) evaluated_ms
,cast( rdb$get_context( 'USER_SESSION','MAX_THRESHOLD_MS' ) as int ) as max_allowed_ms
from rdb$database
);
"""
act_1 = isql_act('db_1', test_script_1, substitutions=substitutions_1)
expected_stdout_1 = """
RESULT 1
Records affected: 1
DURATION acceptable
"""
@pytest.mark.version('>=4.0')
def test_1(act_1: Action):
act_1.expected_stdout = expected_stdout_1
act_1.execute()
assert act_1.clean_expected_stdout == act_1.clean_stdout