test/decimal.test

# 2017 December 9
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix decimal

if {[catch {load_static_extension db decimal} error]} {
  puts "Skipping zipfile tests, hit load error: $error"
  finish_test; return
}

do_execsql_test 1000 {
  SELECT decimal(1);
} {1}
do_execsql_test 1010 {
  SELECT decimal(1.0);
} {1.0}
do_execsql_test 1020 {
  SELECT decimal(0001.0);
} {1.0}
do_execsql_test 1030 {
  SELECT decimal(+0001.0);
} {1.0}
do_execsql_test 1040 {
  SELECT decimal(-0001.0);
} {-1.0}
do_execsql_test 1050 {
  SELECT decimal(1.0e72);
} {1000000000000000000000000000000000000000000000000000000000000000000000000}
#   123456789 123456789 123456789 123456789 123456789 123456789 123456789 123
do_execsql_test 1060 {
  SELECT decimal(1.0e-72);
} {0.0000000000000000000000000000000000000000000000000000000000000000000000010}
#    123456789 123456789 123456789 123456789 123456789 123456789 123456789 123
do_execsql_test 1070 {
  SELECT decimal(-123e-4);
} {-0.0123}
do_execsql_test 1080 {
  SELECT decimal(+123e+4);
} {1230000.0}


do_execsql_test 2000 {
  CREATE TABLE t1(seq INTEGER PRIMARY KEY, val TEXT);
  INSERT INTO t1 VALUES
    (1, '-9999e99'),
    (2, '-9998.000e+99'),
    (3, '-9999.0'),
    (4, '-1'),
    (5, '-9999e-20'),
    (6, '0'),
    (7, '1e-30'),
    (8, '1e-29'),
    (9, '1'),
    (10,'1.00000000000000001'),
    (11,'+1.00001'),
    (12,'99e+99');
  SELECT *, '|'
    FROM t1 AS a, t1 AS b
   WHERE a.seq<b.seq
     AND decimal_cmp(a.val,b.val)>=0;
} {}
do_execsql_test 2010 {
  SELECT *, '|'
    FROM t1 AS a, t1 AS b
   WHERE a.seq<>b.seq
     AND decimal_cmp(a.val,b.val)==0;
} {}
do_execsql_test 2020 {
  SELECT *, '|'
    FROM t1 AS a, t1 AS b
   WHERE a.seq>b.seq
     AND decimal_cmp(a.val,b.val)<=0;
} {}
do_execsql_test 2030 {
  SELECT seq FROM t1 ORDER BY val COLLATE decimal;
} {1 2 3 4 5 6 7 8 9 10 11 12}
do_execsql_test 2040 {
  SELECT seq FROM t1 ORDER BY val COLLATE decimal DESC;
} {12 11 10 9 8 7 6 5 4 3 2 1}

do_execsql_test 3000 {
  CREATE TABLE t3(seq INTEGER PRIMARY KEY, val TEXT);
  WITH RECURSIVE c(x) AS (VALUES(1) UNION SELECT x+1 FROM c WHERE x<10)
    INSERT INTO t3(seq, val) SELECT x, x FROM c;
  WITH RECURSIVE c(x) AS (VALUES(1) UNION SELECT x+1 FROM c WHERE x<5)
    INSERT INTO t3(seq, val) SELECT x+10, x*1000 FROM c;
  SELECT decimal(val) FROM t3 ORDER BY seq;
} {1 2 3 4 5 6 7 8 9 10 1000 2000 3000 4000 5000}
do_execsql_test 3020 {
  SELECT decimal_add(val,'0.5') FROM t3 WHERE seq>5 ORDER BY seq
} {6.5 7.5 8.5 9.5 10.5 1000.5 2000.5 3000.5 4000.5 5000.5}
do_execsql_test 3030 {
  SELECT decimal_add(val,'-10') FROM t3 ORDER BY seq;
} {-9 -8 -7 -6 -5 -4 -3 -2 -1 0 990 1990 2990 3990 4990}

do_execsql_test 4000 {
  SELECT decimal_sum(val) FROM t3;
} {15055}
do_execsql_test 4010 {
  SELECT decimal_sum(decimal_add(val,val||'e+10')) FROM t3;
} {150550000015055}
do_execsql_test 4010 {
  SELECT decimal_sum(decimal_add(val||'e+20',decimal_add(val,val||'e-20')))
    FROM t3;
} {1505500000000000000015055.00000000000000015055}

do_execsql_test 5000 {
  WITH RECURSIVE c(x,y,z) AS (
    VALUES(0,'1','1')
    UNION ALL
    SELECT x+1, decimal_mul(y,'2'), decimal_mul(z,'0.5')
      FROM c WHERE x<32
  )
  SELECT count(*) FROM c WHERE decimal_mul(y,z)='1';
} {33}

finish_test