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91 lines
2.5 KiB
Python
91 lines
2.5 KiB
Python
#coding:utf-8
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"""
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ID: issue-5417
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ISSUE: 5417
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TITLE: ALTER SEQUENCE RESTART WITH does not change the initial value
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DESCRIPTION:
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NOTES:
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[18.08.2020]
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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 'CREATE SEQUENCE <G>' will create generator with current value LESS FOR 1 then it was before.
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Thus, 'create sequence g;' followed by 'show sequence;' will output "current value: -1" (!!) rather than 0.
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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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Because of this, it was decided create separate section for FB 4.x.
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JIRA: CORE-5133
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FBTEST: bugs.core_5133
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"""
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import pytest
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from firebird.qa import *
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db_1 = db_factory()
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test_script = """
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create or alter view v_gen as select 1 id from rdb$database;
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commit;
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recreate sequence s1 start with 100 increment 2;
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create or alter view v_gen as
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select
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trim(rdb$generator_name) gen_name
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,gen_id(s1, 0) as generator_current_value
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,rdb$initial_value gen_init
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,rdb$generator_increment gen_incr
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from rdb$generators
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where rdb$system_flag<>1;
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commit;
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set list on;
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select * from v_gen;
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alter sequence s1 restart with -1 increment -3;
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commit;
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select * from v_gen;
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"""
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act = isql_act('db_1', test_script)
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# version: 3.0
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expected_stdout_1 = """
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GEN_NAME S1
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GENERATOR_CURRENT_VALUE 100
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GEN_INIT 100
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GEN_INCR 2
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GEN_NAME S1
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GENERATOR_CURRENT_VALUE -1
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GEN_INIT -1
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GEN_INCR -3
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"""
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@pytest.mark.version('>=3.0,<4.0')
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def test_1(act: Action):
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act.expected_stdout = expected_stdout_1
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act.execute()
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assert act.clean_stdout == act.clean_expected_stdout
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# version: 4.0
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expected_stdout_2 = """
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GEN_NAME S1
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GENERATOR_CURRENT_VALUE 98
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GEN_INIT 100
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GEN_INCR 2
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GEN_NAME S1
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GENERATOR_CURRENT_VALUE 2
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GEN_INIT 100
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GEN_INCR -3
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"""
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@pytest.mark.version('>=4.0')
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def test_2(act: Action):
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act.expected_stdout = expected_stdout_2
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act.execute()
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assert act.clean_stdout == act.clean_expected_stdout
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