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Add a test tests/functional/datatypes/test_decfloat_ordering_rules.py from fbtest.
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Anton Zuev
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tests/functional/datatypes/test_decfloat_ordering_rules.py
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150
tests/functional/datatypes/test_decfloat_ordering_rules.py
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#coding:utf-8
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"""
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ID: decfloat.ordering-rules
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TITLE: Test ordering of decfloat values
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DESCRIPTION:
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Test verifies work of:
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- COMPARE_DECFLOAT - compares two DECFLOAT values to be equal, different or unordered.
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Returns SMALLINT value which can be as follows:
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0 - values are equal
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1 - first value is less than second
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2 - first value is greater than second
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3 - values unordered (i.e. one or both is NAN / SNAN)
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Unlike comparison operators ('<', '=', '>', etc.) comparison is exact - i.e.
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COMPARE_DECFLOAT(2.17, 2.170) returns 2, not 0.
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- TOTALORDER - compares two DECFLOAT values including any special value. The comparison is exact.
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Returns SMALLINT value which can be as follows:
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-1 - first value is less than second
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0 - values are equal
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1 - first value is greater than second
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DECFLOAT values are ordered as follows:
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-nan < -snan < -inf < -0.1 < -0.10 < -0 < 0 < 0.10 < 0.1 < inf < snan < nan
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Checked on 4.0.0.1714.
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FBTEST: functional.datatypes.decfloat_ordering_rules
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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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set decfloat traps to;
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select
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t.*
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,decode( totalorder("-nan", "-snan"), -1, '-nan LSS -snan', 1, '-nan GTR -snan', 0, '-nan EQU -snan', 'UNKNOWN') as "totalorder(-nan, -snan)"
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,decode( totalorder("-snan", "-inf"), -1, '-snan LSS -inf', 1, '-snan GTR -inf', 0, '-snan EQU -inf', 'UNKNOWN') as "totalorder(-snan, -inf)"
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,decode( totalorder("-inf", "-0.1"), -1, '-inf LSS -0.1', 1, '-inf GTR -0.1', 0, '-inf EQU -0.1', 'UNKNOWN') as "totalorder(-inf, -0.1)"
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,decode( totalorder("-0.1", "-0.10"), -1, '-0.1 LSS -0.10', 1, '-0.1 GTR -0.10', 0, '-0.1 EQU -0.10', 'UNKNOWN') as "totalorder(-0.1, -0.10)"
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,decode( totalorder("-0.10", "-0"), -1, '-0.10 LSS -0', 1, '-0.10 GTR -0', 0, '-0.10 EQU -0', 'UNKNOWN') as "totalorder(-0.10, -0)"
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,decode( totalorder("-0", "0"), -1, '-0 LSS 0', 1, '-0 GTR 0', 0, '-0 EQU 0', 'UNKNOWN') as "totalorder(-0, 0)"
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,decode( totalorder("0", "0.10"), -1, '0 LSS 0.10', 1, '0 GTR 0.10', 0, '0 EQU 0.10', 'UNKNOWN') as "totalorder(0, 0.10)"
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,decode( totalorder("0.10", "0.1"), -1, '0.10 LSS 0.1', 1, '0.10 GTR 0.1', 0, '0.10 EQU 0.1', 'UNKNOWN') as "totalorder(0.10, 0.1)"
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,decode( totalorder("0.1", "inf"), -1, '0.1 LSS inf', 1, '0.1 GTR inf', 0, '0.1 EQU inf', 'UNKNOWN') as "totalorder(0.1, inf)"
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,decode( totalorder("inf", "snan"), -1, 'inf LSS snan', 1, 'inf GTR snan', 0, 'inf EQU snan', 'UNKNOWN') as "totalorder(inf, snan)"
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,decode( totalorder("snan", "nan"), -1, 'snan LSS nan', 1, 'snan GTR nan', 0, 'snan EQU nan', 'UNKNOWN') as "totalorder(snan, nan)"
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,decode( compare_decfloat("-nan", "-snan"), 1, '-nan LSS -snan', 2, '-nan GTR -snan', 0, '-nan EQU -snan', 3, 'Unordered', 'UNKNOWN' ) as "compare_decfloat(-nan, -snan)"
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,decode( compare_decfloat("-snan", "-inf"), 1, '-snan LSS -inf', 2, '-snan GTR -inf', 0, '-snan EQU -inf', 3, 'Unordered', 'UNKNOWN' ) as "compare_decfloat(-snan, -inf)"
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,decode( compare_decfloat("-inf", "-0.1"), 1, '-inf LSS -0.1', 2, '-inf GTR -0.1', 0, '-inf EQU -0.1', 3, 'Unordered', 'UNKNOWN' ) as "compare_decfloat(-inf, -0.1)"
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,decode( compare_decfloat("-0.1", "-0.10"), 1, '-0.1 LSS -0.10', 2, '-0.1 GTR -0.10', 0, '-0.1 EQU -0.10', 3, 'Unordered', 'UNKNOWN' ) as "compare_decfloat(-0.1, -0.10)"
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,decode( compare_decfloat("-0.10", "-0"), 1, '-0.10 LSS -0', 2, '-0.10 GTR -0', 0, '-0.10 EQU -0', 3, 'Unordered', 'UNKNOWN' ) as "compare_decfloat(-0.10, -0)"
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,decode( compare_decfloat("-0", "0"), 1, '-0 LSS 0', 2, '-0 GTR 0', 0, '-0 EQU 0', 3, 'Unordered', 'UNKNOWN' ) as "compare_decfloat(-0, 0)"
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,decode( compare_decfloat("0", "0.10"), 1, '0 LSS 0.10', 2, '0 GTR 0.10', 0, '0 EQU 0.10', 3, 'Unordered', 'UNKNOWN' ) as "compare_decfloat(0, 0.10)"
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,decode( compare_decfloat("0.10", "0.1"), 1, '0.10 LSS 0.1', 2, '0.10 GTR 0.1', 0, '0.10 EQU 0.1', 3, 'Unordered', 'UNKNOWN' ) as "compare_decfloat(0.10, 0.1)"
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,decode( compare_decfloat("0.1", "inf"), 1, '0.1 LSS inf', 2, '0.1 GTR inf', 0, '0.1 EQU inf', 3, 'Unordered', 'UNKNOWN' ) as "compare_decfloat(0.1, inf)"
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,decode( compare_decfloat("inf", "snan"), 1, 'inf LSS snan', 2, 'inf GTR snan', 0, 'inf EQU snan', 3, 'Unordered', 'UNKNOWN' ) as "compare_decfloat(inf, snan)"
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,decode( compare_decfloat("snan", "nan"), 1, 'snan LSS nan', 2, 'snan GTR nan', 0, 'snan EQU nan', 3, 'Unordered', 'UNKNOWN' ) as "compare_decfloat(snan, nan)"
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,iif( "-nan" < "-snan", '-nan LSS -snan', iif( "-nan" > "-snan", '-nan GTR -snan', iif("-nan" = "-snan", '-nan EQU -snan', 'UNKNOWN') ) ) as "arithmetic: -nan vs to -snan:"
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,iif( "-snan" < "-inf", '-snan LSS -inf', iif( "-snan" > "-inf", '-snan GTR -inf', iif("-snan" = "-inf", '-snan EQU -inf', 'UNKNOWN') ) ) as "arithmetic: -snan vs to -inf:"
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,iif( "-inf" < "-0.1", '-inf LSS -0.1', iif( "-inf" > "-0.1", '-inf GTR -0.1', iif("-inf" = "-0.1", '-inf EQU -0.1', 'UNKNOWN') ) ) as "arithmetic: -inf vs to -0.1:"
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,iif( "-0.1" < "-0.10", '-0.1 LSS -0.10', iif( "-0.1" > "-0.10", '-0.1 GTR -0.10', iif("-0.1" = "-0.10", '-0.1 EQU -0.10', 'UNKNOWN') ) ) as "arithmetic: -0.1 vs to -0.10:"
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,iif( "-0.10" < "-0", '-0.10 LSS -0', iif( "-0.10" > "-0", '-0.10 GTR -0', iif("-0.10" = "-0", '-0.10 EQU -0', 'UNKNOWN') ) ) as "arithmetic: -0.10 vs to -0:"
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,iif( "-0" < "0", '-0 LSS 0', iif( "-0" > "0", '-0 GTR 0', iif("-0" = "0", '-0 EQU 0', 'UNKNOWN') ) ) as "arithmetic: -0 vs to 0:"
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,iif( "0" < "0.10", '0 LSS 0.10', iif( "0" > "0.10", '0 GTR 0.10', iif("0" = "0.10", '0 EQU 0.10', 'UNKNOWN') ) ) as "arithmetic: 0 vs to 0.10:"
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,iif( "0.10" < "0.1", '0.10 LSS 0.1', iif( "0.10" > "0.1", '0.10 GTR 0.1', iif("0.10" = "0.1", '0.10 EQU 0.1', 'UNKNOWN') ) ) as "arithmetic: 0.10 vs to 0.1:"
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,iif( "0.1" < "inf", '0.1 LSS inf', iif( "0.1" > "inf", '0.1 GTR inf', iif("0.1" = "inf", '0.1 EQU inf', 'UNKNOWN') ) ) as "arithmetic: 0.1 vs to inf:"
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,iif( "inf" < "snan", 'inf LSS snan', iif( "inf" > "snan", 'inf GTR snan', iif("inf" = "snan", 'inf EQU snan', 'UNKNOWN') ) ) as "arithmetic: inf vs to snan:"
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,iif( "snan" < "nan", 'snan LSS nan', iif( "snan" > "nan", 'snan GTR nan', iif("snan" = "nan", 'snan EQU nan', 'UNKNOWN') ) ) as "arithmetic: snan vs to nan:"
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from (
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select
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-cast('foo' as decfloat) as "-nan"
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,-cast('snan' as decfloat) as "-snan"
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,-cast(1/1e-9999 as decfloat) as "-inf"
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,-cast(0.1 as decfloat) as "-0.1"
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,-cast(0.10 as decfloat) as "-0.10"
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,-cast(0 as decfloat) as "-0"
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,cast(0 as decfloat) as "0"
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,cast(0.10 as decfloat) as "0.10"
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,cast(0.1 as decfloat) as "0.1"
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,cast(1/1e-9999 as decfloat) as "inf"
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,cast('snan' as decfloat) as "snan"
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,cast('bar' as decfloat) as "nan"
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from rdb$database
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) t;
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"""
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act = isql_act('db', test_script, substitutions=[('[\\s]+', ' ')])
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expected_stdout = """
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-nan -NaN
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-snan -sNaN
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-inf -Infinity
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-0.1 -0.1
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-0.10 -0.10
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-0 -0
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0 0
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0.10 0.10
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0.1 0.1
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inf Infinity
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snan sNaN
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nan NaN
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totalorder(-nan, -snan) -nan LSS -snan
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totalorder(-snan, -inf) -snan LSS -inf
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totalorder(-inf, -0.1) -inf LSS -0.1
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totalorder(-0.1, -0.10) -0.1 LSS -0.10
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totalorder(-0.10, -0) -0.10 LSS -0
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totalorder(-0, 0) -0 LSS 0
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totalorder(0, 0.10) 0 LSS 0.10
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totalorder(0.10, 0.1) 0.10 LSS 0.1
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totalorder(0.1, inf) 0.1 LSS inf
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totalorder(inf, snan) inf LSS snan
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totalorder(snan, nan) snan LSS nan
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compare_decfloat(-nan, -snan) Unordered
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compare_decfloat(-snan, -inf) Unordered
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compare_decfloat(-inf, -0.1) -inf LSS -0.1
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compare_decfloat(-0.1, -0.10) -0.1 LSS -0.10
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compare_decfloat(-0.10, -0) -0.10 LSS -0
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compare_decfloat(-0, 0) -0 LSS 0
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compare_decfloat(0, 0.10) 0 LSS 0.10
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compare_decfloat(0.10, 0.1) 0.10 LSS 0.1
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compare_decfloat(0.1, inf) 0.1 LSS inf
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compare_decfloat(inf, snan) Unordered
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compare_decfloat(snan, nan) Unordered
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arithmetic: -nan vs to -snan: -nan EQU -snan
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arithmetic: -snan vs to -inf: -snan EQU -inf
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arithmetic: -inf vs to -0.1: -inf LSS -0.1
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arithmetic: -0.1 vs to -0.10: -0.1 EQU -0.10
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arithmetic: -0.10 vs to -0: -0.10 LSS -0
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arithmetic: -0 vs to 0: -0 EQU 0
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arithmetic: 0 vs to 0.10: 0 LSS 0.10
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arithmetic: 0.10 vs to 0.1: 0.10 EQU 0.1
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arithmetic: 0.1 vs to inf: 0.1 LSS inf
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arithmetic: inf vs to snan: inf EQU snan
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arithmetic: snan vs to nan: snan EQU nan
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"""
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@pytest.mark.version('>=4.0')
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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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