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132 lines
5.1 KiB
Python
132 lines
5.1 KiB
Python
#coding:utf-8
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"""
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ID: issue-6293
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ISSUE: 6293
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TITLE: GTTs do not release used space
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DESCRIPTION:
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1) runs loop for two iterations (see 'for ClrRetainGTT in (0,1): ...')
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2) on each iteration:
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2.1) makes copy of test DB to the file which is specified in databases.conf as
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database for alias with name = 'tmp_core_6043_gtt_0_alias', 'tmp_core_6043_gtt_1_alias'.
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NOTE: it is supposed that we have pre-created databases.conf with these TWO ALIASES,
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and each of them have in its details parameter ClearGTTAtRetaining = 0 and 1 respectively.
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2.2) launches ISQL which must connect to appropriate alias and execute script from ticket;
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3) checks that:
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3.1) for ClearGTTAtRetaining = 0 (value for backward compatibility):
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* COMMIT RETAIN preserves record that was inserted in the statement before this commit;
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* ROLLBACK RETAIN does NOT delete record that was inserted before COMMIT RETAIN.
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3.2) for ClearGTTAtRetaining = 1 (default value) NO records will be in the GTT after commit/rollback RETAIN.
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JIRA: CORE-6043
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FBTEST: bugs.core_6043
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NOTES:
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[06.08.2022] pzotov
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Confirmed problem on 3.0.5.33115 (snapshot date: 26-mar-2019):
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records for commit/rollback retain were NOT preserved despite setting ClearGTTAtRetaining = 0.
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Previous checks:
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4.0.0.1687 SS: 1.536s.
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4.0.0.1685 CS: 2.026s.
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3.0.5.33207 SS: 1.435s.
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3.0.5.33152 SC: 1.243s.
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3.0.5.33206 CS: 2.626s.
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Checked on 5.0.0.591, 4.0.1.2692, 3.0.8.33535 - both on Windows and Linux.
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[01.12.2023] pzotov
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Adjusted pytest.mark.version: test can run only on FB 3.x and 4.x.
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Config parameter ClearGTTAtRetaining was removed from FB 5.x+
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(see "Task #7897 : Remove obsolete setting ClearGTTAtRetaining").
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"""
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import re
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from pathlib import Path
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import pytest
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from firebird.qa import *
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db = db_factory()
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act = python_act('db', substitutions=[('[ \t]+', ' ')])
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@pytest.mark.version('>=3.0.5','<5.0')
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def test_1(act: Action, capsys):
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for ClrRetainGTT in (0,1):
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chk_alias = f'tmp_core_6043_gtt_{ClrRetainGTT}_alias' # 'tmp_core_6043_gtt_0_alias', 'tmp_core_6043_gtt_1_alias'
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#for chk_alias in REQUIRED_ALIASES:
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# Scan line-by-line through databases.conf, find line starting with <chk_alias> and extract name of file that
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# must be created in the $(dir_sampleDb)/qa/ folder. This name will be used further as target database (tmp_fdb).
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# NOTE: we have to SKIP lines which are commented out, i.e. if they starts with '#':
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ptn_checked_alias = re.compile( '^(?!#)((^|\\s+)' + chk_alias + ')\\s*=\\s*\\$\\(dir_sampleDb\\)/qa/', re.IGNORECASE )
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fname_in_dbconf = None
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with open(act.home_dir/'databases.conf', 'r') as f:
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for line in f:
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if ptn_checked_alias.search(line):
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# If databases.conf contains line like this:
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# tmp_4964_alias = $(dir_sampleDb)/qa/tmp_qa_4964.fdb
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# - then we extract filename: 'tmp_qa_4964.fdb' (see below):
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fname_in_dbconf = Path(line.split('=')[1].strip()).name
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break
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# if 'fname_in_dbconf' remains undefined here then propably REQUIRED_ALIAS not equals to specified in the databases.conf!
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#
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assert fname_in_dbconf
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# Full path + filename of database to which we will try to connect:
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#
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tmp_fdb = Path( act.vars['sample_dir'], 'qa', fname_in_dbconf )
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# PermissionError: [Errno 13] Permission denied --> probably because
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# Firebird was started by root rather than current (non-privileged) user.
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#
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tmp_fdb.write_bytes(act.db.db_path.read_bytes())
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check_sql = f'''
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set bail on;
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set list on;
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connect '{act.host+":" if act.host else ""}{chk_alias}' user {act.db.user} password '{act.db.password}';
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select '{ClrRetainGTT}' as "ClearGTTAtRetaining:" from rdb$database;
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recreate global temporary table gtt (id int) on commit delete rows;
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commit;
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set count off;
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insert into gtt values (3);
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commit retain;
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set count on;
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select * from gtt; -- point 1
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set count off;
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insert into gtt values (4);
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rollback retain;
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set count on;
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select * from gtt; -- point 2
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'''
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if ClrRetainGTT == 0:
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act.expected_stdout = f"""
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ClearGTTAtRetaining: {ClrRetainGTT}
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ID 3
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Records affected: 1
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ID 3
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Records affected: 1
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"""
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else:
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act.expected_stdout = f"""
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ClearGTTAtRetaining: {ClrRetainGTT}
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Records affected: 0
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Records affected: 0
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"""
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try:
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act.isql(switches = ['-q'], input = check_sql, connect_db=False, credentials = False, combine_output = True)
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finally:
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tmp_fdb.unlink()
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assert act.clean_stdout == act.clean_expected_stdout
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act.reset()
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