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88 lines
2.5 KiB
Python
88 lines
2.5 KiB
Python
#coding:utf-8
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"""
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ID: issue-4221
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ISSUE: 4221
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TITLE: Server crashes on preparing empty query when trace is enabled
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DESCRIPTION:
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Crash can be reproduced if FB 2.5.0 or 2.5.1 runs in Classic or SuperClassic mode (Super not affected).
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Steps to reproduce:
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0. Prepare trace configuration and launch user trace;
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time_threshold = 0
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log_statement_prepare true
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1. Launch ISQL and execute execute block with empty ES;
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FB 2.5.1.26351 crashed at this point. NB: there is no crash if we do not launch trace.
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Test checks that:
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1. ISQL actually produces error messages which do NOT contain
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'SQLSTATE = 08006 / Unable to complete network ... / -Error reading data ...'
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2. firebird.log remain unchanged (we compare its content before and after ISQL).
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JIRA: CORE-3884
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FBTEST: bugs.core_3884
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NOTES:
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[28.05.2022] pzotov
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Checked on 5.0.0.501, 4.0.1.2692, 3.0.8.33535
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"""
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import pytest
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from firebird.qa import *
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import locale
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from difflib import unified_diff
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import re
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db = db_factory()
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act = python_act('db', substitutions=[('[ \t]+', ' '), ('line(:)? \\d+, col(umn)?(:)? \\d+', '')])
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expected_stdout_isql = """
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Statement failed, SQLSTATE = 42000
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Dynamic SQL Error
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-SQL error code = -104
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-Unexpected end of command - line 1, column 1
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-At block line: 3, col: 13
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"""
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@pytest.mark.trace
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@pytest.mark.version('>=3')
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def test_1(act: Action, capsys):
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trace_cfg_items = [
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'time_threshold = 0',
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'log_statement_prepare = true',
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]
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sql_empty_sttm = '''
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set term ^;
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execute block as
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begin
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execute statement '';
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end
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^
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'''
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with act.connect_server(encoding=locale.getpreferredencoding()) as srv:
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srv.info.get_log()
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fb_log_init = srv.readlines()
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with act.trace(db_events = trace_cfg_items, encoding=locale.getpreferredencoding()):
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act.isql(input = sql_empty_sttm, combine_output = True)
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act.expected_stdout = expected_stdout_isql
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assert act.clean_stdout == act.clean_expected_stdout
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act.reset()
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#------------------------------------------------------------------------------------
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with act.connect_server(encoding=locale.getpreferredencoding()) as srv:
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srv.info.get_log()
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fb_log_curr = srv.readlines()
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for line in unified_diff(fb_log_init, fb_log_curr):
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if line.startswith('+'):
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print(line.strip())
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assert capsys.readouterr().out == ''
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