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https://github.com/FirebirdSQL/firebird-qa.git
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104 lines
2.7 KiB
Python
104 lines
2.7 KiB
Python
#coding:utf-8
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"""
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ID: trigger.database.transaction-rollback
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TITLE: Trigger on rollback transaction
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DESCRIPTION:
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Test trigger on rollback transaction
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FBTEST: functional.trigger.database.transactionrollback_01
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"""
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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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test_script = """
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set list on;
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create sequence g;
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commit;
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create view v_check as
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select rdb$get_context('USER_SESSION', 'TRG_TX') as ctx
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from rdb$database;
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commit;
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set term ^;
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create or alter trigger trg_tx_rbak inactive on transaction rollback position 0 as
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begin
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--- nop ---
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end
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^
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set term ;^
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commit;
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recreate table test(id int);
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commit;
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recreate table log (main_app_tx int, db_trigger_tx int default current_transaction, add_info varchar(80) );
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commit;
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set term ^;
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create or alter trigger trg_tx_rbak inactive on transaction rollback position 0 as
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begin
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rdb$set_context('USER_SESSION', 'TRG_TX', gen_id(g,1));
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end
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^
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set term ;^
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commit;
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set autoddl off;
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alter trigger trg_tx_rbak active;
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commit;
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select gen_id(g,0) as curr_g, v.* from v_check v; -- 0, <null>
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rollback; -- this should increase value of sequence 'g' by 1 and assign new value to context var. 'TRG_TX'
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set transaction no wait;
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select gen_id(g,0) as curr_g, v.* from v_check v; -- 1, 1 (the same! becase Tx START should not be watched by trg_tx_rbak)
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commit;
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select gen_id(g,0) as curr_g, v.* from v_check v; -- 1, 1 (the same! because COMMIT should not be watched by trg_tx_rbak)
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set term ^;
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create or alter trigger trg_tx_rbak active on transaction rollback position 0 as
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begin
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rdb$set_context('USER_SESSION', 'TRG_TX', gen_id(g,1234)/0);
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end
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^
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set term ;^
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commit;
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-- this should increase value of sequence 'g' by 1234 but context var. 'TRG_TX'
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-- will store old value because of zero-divide exception
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rollback;
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-- NB: client should NOT get exception (zero divide) from trigger which is defined for __ROLLBACK__ event!
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select gen_id(g,0) as curr_g, v.* from v_check v; -- 1235, 1
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"""
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act = isql_act('db', test_script)
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expected_stdout = """
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CURR_G 0
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CTX <null>
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CURR_G 1
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CTX 1
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CURR_G 1
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CTX 1
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CURR_G 1235
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CTX 1
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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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act.expected_stdout = expected_stdout
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act.execute()
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assert act.clean_stdout == act.clean_expected_stdout
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