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54 lines
2.1 KiB
Python
54 lines
2.1 KiB
Python
#coding:utf-8
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"""
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ID: issue-3723
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ISSUE: 3723
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TITLE: Generators are set to 0 after restore
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DESCRIPTION:
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FB 4.x has incompatible behaviour with all previous versions since build 4.0.0.2131 (06-aug-2020):
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statement 'alter sequence <seq_name> restart with 0' changes rdb$generators.rdb$initial_value to -1 thus
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next call of gen_id(<seq_name>,1) will return 0 (ZERO!) rather than 1.
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See also CORE-6084 and its fix: https://github.com/FirebirdSQL/firebird/commit/23dc0c6297825b2e9006f4d5a2c488702091033d
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This is considered as *expected* and is noted in doc/README.incompatibilities.3to4.txt
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JIRA: CORE-3357
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"""
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import pytest
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from io import BytesIO
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from firebird.qa import *
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from firebird.driver import SrvRestoreFlag
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init_script = """
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recreate sequence g1 start with 9223372036854775807 increment by -2147483647;
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recreate sequence g2 start with -9223372036854775808 increment by 2147483647;
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commit;
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"""
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db = db_factory(init=init_script)
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act = python_act('db')
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# version: 3.0
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expected_stdout_3 = """
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Generator G1, current value: 9223372036854775807, initial value: 9223372036854775807, increment: -2147483647
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Generator G2, current value: -9223372036854775808, initial value: -9223372036854775808, increment: 2147483647
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"""
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# version: 4.0
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expected_stdout_4 = """
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Generator G1, current value: -9223372034707292162, initial value: 9223372036854775807, increment: -2147483647
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Generator G2, current value: 9223372034707292161, initial value: -9223372036854775808, increment: 2147483647
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"""
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@pytest.mark.version('>=3.0')
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def test_1(act: Action):
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with act.connect_server() as srv:
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backup = BytesIO()
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srv.database.local_backup(database=act.db.db_path, backup_stream=backup)
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backup.seek(0)
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srv.database.local_restore(backup_stream=backup, database=act.db.db_path,
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flags=SrvRestoreFlag.REPLACE)
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act.expected_stdout = expected_stdout_4 if act.is_version('>=4') else expected_stdout_3
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act.isql(switches=[], input="show sequ g1; show sequ g2;")
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assert act.clean_stdout == act.clean_expected_stdout
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