70 lines
1.9 KiB
Plaintext
70 lines
1.9 KiB
Plaintext
# 2008 April 1
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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# Test cases designed to exercise and verify the logic for
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# factoring constant expressions out of loops and for
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# common subexpression eliminations.
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#
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# $Id: cse.test,v 1.1 2008/04/01 01:42:41 drh Exp $
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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do_test cse-1.1 {
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execsql {
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CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c, d, e, f);
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INSERT INTO t1 VALUES(1,11,12,13,14,15);
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INSERT INTO t1 VALUES(2,21,22,23,24,25);
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}
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execsql {
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SELECT b, -b, ~b, NOT b, NOT NOT b, b-b, b+b, b*b, b/b, b FROM t1
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}
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} {11 -11 -12 0 1 0 22 121 1 11 21 -21 -22 0 1 0 42 441 1 21}
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do_test cse-1.2 {
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execsql {
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SELECT b, b%b, b==b, b!=b, b<b, b<=b, b IS NULL, b NOT NULL, b FROM t1
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}
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} {11 0 1 0 0 1 0 1 11 21 0 1 0 0 1 0 1 21}
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do_test cse-1.3 {
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execsql {
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SELECT b, abs(b), coalesce(b,-b,NOT b,c,NOT c), c, -c FROM t1;
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}
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} {11 11 11 12 -12 21 21 21 22 -22}
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do_test cse-1.4 {
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execsql {
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SELECT CASE WHEN a==1 THEN b ELSE c END, b, c FROM t1
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}
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} {11 11 12 22 21 22}
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do_test cse-1.5 {
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execsql {
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SELECT CASE a WHEN 1 THEN b WHEN 2 THEN c ELSE d END, b, c, d FROM t1
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}
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} {11 11 12 13 22 21 22 23}
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do_test cse-1.6 {
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execsql {
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SELECT CASE b WHEN 11 THEN -b WHEN 21 THEN -c ELSE -d END, b, c, d FROM t1
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}
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} {-11 11 12 13 -22 21 22 23}
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do_test cse-1.7 {
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execsql {
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SELECT a, -a, ~a, NOT a, NOT NOT a, a-a, a+a, a*a, a/a, a FROM t1
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}
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} {1 -1 -2 0 1 0 2 1 1 1 2 -2 -3 0 1 0 4 4 1 2}
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do_test cse-1.8 {
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execsql {
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SELECT a, a%a, a==a, a!=a, a<a, a<=a, a IS NULL, a NOT NULL, a FROM t1
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}
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} {1 0 1 0 0 1 0 1 1 2 0 1 0 0 1 0 1 2}
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finish_test
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