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# 2012 March 23
#
# 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
ifcapable {!incrblob} { finish_test ; return }
set testprefix incrblob4
proc create_t1 {} {
execsql {
PRAGMA page_size = 1024;
CREATE TABLE t1(k INTEGER PRIMARY KEY, v);
}
}
proc populate_t1 {} {
set data [list a b c d e f g h i j k l m n o p q r s t u v w x y z]
foreach d $data {
set blob [string repeat $d 900]
execsql { INSERT INTO t1(v) VALUES($blob) }
}
}
do_test 1.1 {
create_t1
populate_t1
} {}
do_test 1.2 {
set blob [db incrblob t1 v 5]
read $blob 10
} {eeeeeeeeee}
do_test 1.3 {
execsql { DELETE FROM t1 }
populate_t1
} {}
do_test 2.1 {
reset_db
create_t1
populate_t1
} {}
do_test 2.2 {
set blob [db incrblob t1 v 10]
read $blob 10
} {jjjjjjjjjj}
do_test 2.3 {
set new [string repeat % 900]
execsql { DELETE FROM t1 WHERE k=10 }
execsql { DELETE FROM t1 WHERE k=9 }
execsql { INSERT INTO t1(v) VALUES($new) }
} {}
do_test 3.1 {
reset_db
create_t1
populate_t1
} {}
do_test 3.2 {
set blob [db incrblob t1 v 20]
read $blob 10
} {tttttttttt}
do_test 3.3 {
set new [string repeat % 900]
execsql { UPDATE t1 SET v = $new WHERE k = 20 }
execsql { DELETE FROM t1 WHERE k=19 }
execsql { INSERT INTO t1(v) VALUES($new) }
} {}
finish_test
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