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164 lines
5.0 KiB
Python
164 lines
5.0 KiB
Python
#coding:utf-8
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#
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# id: bugs.core_4409
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# title: Enhancement in precision of calculations with NUMERIC/DECIMAL
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# decription:
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# Checked on 4.0.0.767: OK, 0.828s.
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# Reproduced wrong result on 4.0.0.748.
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# See also letter to Alex, 12-jul-2017 09:49 (prototype for this test).
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# --------------------
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# ::: NB :::
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# After fix CORE-5700 ("DECFLOAT underflow should yield zero instead of an error"), 02-feb-2018, expected result was
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# changed: all expressions with "almost zero" result should NOT raise any error.
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# See also:
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# https://github.com/FirebirdSQL/firebird/commit/a372f319f61d88151f5a34c4ee4ecdab6fe052f3
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#
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# tracker_id: CORE-4409
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# min_versions: ['4.0']
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# versions: 4.0
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# qmid: None
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import pytest
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from firebird.qa import db_factory, isql_act, Action
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# version: 4.0
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# resources: None
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substitutions_1 = [('0.0000000000000000', '0.000000000000000')]
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init_script_1 = """"""
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db_1 = db_factory(sql_dialect=3, init=init_script_1)
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test_script_1 = """
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recreate sequence g;
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commit;
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set list on;
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--set sqlda_display on;
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--set echo on;
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select gen_id(g,1) as "Test #", cast( 1e-308 as double precision ) positive_zero_e_308 from rdb$database;
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select gen_id(g,1) as "Test #", cast( 1e-309 as double precision ) positive_zero_e_309 from rdb$database;
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select gen_id(g,1) as "Test #", cast( 1e-310 as double precision ) positive_zero_e_310 from rdb$database;
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select gen_id(g,1) as "Test #", cast( 1e-320 as double precision ) positive_zero_e_320 from rdb$database;
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select gen_id(g,1) as "Test #", cast( 1e-321 as double precision ) positive_zero_e_321 from rdb$database;
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select gen_id(g,1) as "Test #", cast( 1e-322 as double precision ) positive_zero_e_322 from rdb$database;
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select gen_id(g,1) as "Test #", cast( 1e-323 as double precision ) positive_zero_e_323 from rdb$database;
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select gen_id(g,1) as "Test #", cast( 3.70550e-324 as double precision ) positive_zero_e324a from rdb$database;
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select gen_id(g,1) as "Test #", cast( 3.70549234380e-324 as double precision ) positive_zero_e324b from rdb$database;
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select gen_id(g,1) as "Test #", cast( 3.70549234381e-324 as double precision ) positive_zero_e324c from rdb$database;
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select gen_id(g,1) as "Test #", cast( 3.70548e-324 as double precision ) positive_zero_e324d from rdb$database;
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select gen_id(g,1) as "Test #", cast( 1e-324 as double precision ) positive_zero_e324e from rdb$database;
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select gen_id(g,1) as "Test #", cast( 1e-6176 as double precision ) positive_zero_e324f from rdb$database;
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select gen_id(g,1) as "Test #", cast( 1e-6177 as double precision ) positive_zero_e324g from rdb$database;
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select gen_id(g,1) as "Test #", cast( 1.79769313486231e+308 as double precision ) positive_inf_e308a from rdb$database;
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select gen_id(g,1) as "Test #", cast( 1.79769313486232e+308 as double precision ) positive_inf_e308b from rdb$database;
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"""
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act_1 = isql_act('db_1', test_script_1, substitutions=substitutions_1)
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expected_stdout_1 = """
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Test # 1
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POSITIVE_ZERO_E_308 9.999999999999999e-309
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Test # 2
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POSITIVE_ZERO_E_309 0.0000000000000000
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Test # 3
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POSITIVE_ZERO_E_310 0.0000000000000000
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Test # 4
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POSITIVE_ZERO_E_320 0.0000000000000000
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Test # 5
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POSITIVE_ZERO_E_321 0.0000000000000000
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Test # 6
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POSITIVE_ZERO_E_322 0.0000000000000000
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Test # 7
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POSITIVE_ZERO_E_323 0.0000000000000000
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Test # 8
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POSITIVE_ZERO_E324A 0.0000000000000000
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Test # 9
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POSITIVE_ZERO_E324B 0.0000000000000000
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Test # 10
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POSITIVE_ZERO_E324C 0.0000000000000000
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Test # 11
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POSITIVE_ZERO_E324D 0.0000000000000000
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Test # 12
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POSITIVE_ZERO_E324E 0.0000000000000000
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Test # 13
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POSITIVE_ZERO_E324F 0.0000000000000000
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Test # 14
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POSITIVE_ZERO_E324G 0.0000000000000000
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Test # 15
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POSITIVE_INF_E308A 1.797693134862310e+308
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"""
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expected_stderr_1 = """
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Statement failed, SQLSTATE = 22003
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Floating-point overflow. The exponent of a floating-point operation is greater than the magnitude allowed.
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"""
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@pytest.mark.version('>=4.0')
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def test_1(act_1: Action):
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act_1.expected_stdout = expected_stdout_1
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act_1.expected_stderr = expected_stderr_1
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act_1.execute()
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assert act_1.clean_stderr == act_1.clean_expected_stderr
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assert act_1.clean_stdout == act_1.clean_expected_stdout
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