# 2007 May 14 # # 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. # #*********************************************************************** # This file implements regression tests for SQLite library. The # focus of this file is testing the built-in SUBSTR() functions. # # $Id: substr.test,v 1.3 2007/10/12 19:11:55 drh Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl ifcapable !tclvar { finish_test return } # Create a table to work with. # execsql { CREATE TABLE t1(t text, b blob) } proc substr-test {id string i1 i2 result} { db eval { DELETE FROM t1; INSERT INTO t1(t) VALUES($string) } do_test substr-$id.1 [subst { execsql { SELECT substr(t, $i1, $i2) FROM t1 } }] [list $result] set qstr '[string map {' ''} $string]' do_test substr-$id.2 [subst { execsql { SELECT substr($qstr, $i1, $i2) } }] [list $result] } proc subblob-test {id hex i1 i2 hexresult} { db eval " DELETE FROM t1; INSERT INTO t1(b) VALUES(x'$hex') " do_test substr-$id.1 [subst { execsql { SELECT hex(substr(b, $i1, $i2)) FROM t1 } }] [list $hexresult] do_test substr-$id.2 [subst { execsql { SELECT hex(substr(x'$hex', $i1, $i2)) } }] [list $hexresult] } # Basic SUBSTR functionality # substr-test 1.1 abcdefg 1 1 a substr-test 1.2 abcdefg 2 1 b substr-test 1.3 abcdefg 1 2 ab substr-test 1.4 abcdefg 1 100 abcdefg substr-test 1.5 abcdefg 0 1 a substr-test 1.6 abcdefg -1 1 g substr-test 1.7 abcdefg -1 10 g substr-test 1.8 abcdefg -5 3 cde substr-test 1.9 abcdefg -7 3 abc substr-test 1.10 abcdefg -100 98 abcde # Make sure everything works with long unicode characters # substr-test 2.1 \u1234\u2345\u3456 1 1 \u1234 substr-test 2.2 \u1234\u2345\u3456 2 1 \u2345 substr-test 2.3 \u1234\u2345\u3456 1 2 \u1234\u2345 substr-test 2.4 \u1234\u2345\u3456 -1 1 \u3456 substr-test 2.5 a\u1234b\u2345c\u3456c -5 3 b\u2345c # Basic functionality for BLOBs # subblob-test 3.1 61626364656667 1 1 61 subblob-test 3.2 61626364656667 2 1 62 subblob-test 3.3 61626364656667 1 2 6162 subblob-test 3.4 61626364656667 1 100 61626364656667 subblob-test 3.5 61626364656667 0 1 61 subblob-test 3.6 61626364656667 -1 1 67 subblob-test 3.7 61626364656667 -1 10 67 subblob-test 3.8 61626364656667 -5 3 636465 subblob-test 3.9 61626364656667 -7 3 616263 subblob-test 3.10 61626364656667 -100 98 6162636465 # If these blobs were strings, then they would contain multi-byte # characters. But since they are blobs, the substr indices refer # to bytes. # subblob-test 4.1 61E188B462E28D8563E3919663 1 1 61 subblob-test 4.2 61E188B462E28D8563E3919663 2 1 E1 subblob-test 4.3 61E188B462E28D8563E3919663 1 2 61E1 subblob-test 4.4 61E188B462E28D8563E3919663 -2 1 96 subblob-test 4.5 61E188B462E28D8563E3919663 -5 4 63E39196 subblob-test 4.6 61E188B462E28D8563E3919663 -100 98 61E188B462E28D8563E391 # Two-argument SUBSTR # proc substr-2-test {id string idx result} { db eval { DELETE FROM t1; INSERT INTO t1(t) VALUES($string) } do_test substr-$id.1 [subst { execsql { SELECT substr(t, $idx) FROM t1 } }] [list $result] set qstr '[string map {' ''} $string]' do_test substr-$id.2 [subst { execsql { SELECT substr($qstr, $idx) } }] [list $result] } substr-2-test 5.1 abcdefghijklmnop 5 efghijklmnop substr-2-test 5.2 abcdef -5 bcdef finish_test