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https://github.com/FirebirdSQL/firebird-qa.git
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66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
#coding:utf-8
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"""
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ID: issue-7627
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ISSUE: https://github.com/FirebirdSQL/firebird/issues/7627
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TITLE: The size of the database with big records becomes bigger after backup/restore
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DESCRIPTION:
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Test creates table with 'very width' column, adds data to it (padded GUID strings) and makes b/r.
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New size of database (after restore) must not exceed initial one.
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NOTES:
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[26.08.2023] pzotov
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Column size must be VERY CLOSE to maximal allowed by implementation.
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On 5.0.0.1070 (date of build 14-jun-2023) bug can be reproduced when
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column size is 32760, but on size = 32000 this is not so: DB size remains the same.
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Confirmed bug on 5.0.0.1070.
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Checked on 5.0.0.1170, 4.0.4.2979
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"""
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from io import BytesIO
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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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from firebird.driver import SrvRestoreFlag
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substitutions_1 = [('[ \t]+', ' ')]
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PG_SIZE = 8192
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init_script = """
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create table test(s varchar(32765));
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insert into test select lpad('', 32765, uuid_to_char(gen_uuid())) from rdb$types;
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commit;
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"""
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tmp_fbk = temp_file( filename = 'tmp_gh_6709.fbk')
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db = db_factory(init = init_script, charset = 'win1251', page_size = PG_SIZE)
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act = python_act('db')
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expected_stdout = "DB size did not increase after restore."
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@pytest.mark.version('>=4.0.3')
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def test_1(act: Action, tmp_fbk: Path, capsys):
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db_init_size = Path(act.db.db_path).stat().st_size
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# backup + restore without creating .fbk:
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#
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bkp_data = BytesIO()
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with act.connect_server() as srv:
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srv.database.local_backup(database = act.db.db_path, backup_stream = bkp_data)
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bkp_data.seek(0)
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srv.database.local_restore(backup_stream = bkp_data, database = act.db.db_path, flags = SrvRestoreFlag.REPLACE)
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db_curr_size = Path(act.db.db_path).stat().st_size
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if db_init_size - db_curr_size >= 0:
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print(expected_stdout)
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else:
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print(f'DB size increased after restore for {db_curr_size - db_init_size} bytes, from {db_init_size} to {db_curr_size}')
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act.expected_stdout = expected_stdout
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act.stdout = capsys.readouterr().out
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assert act.clean_stdout == act.clean_expected_stdout
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act.reset()
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