/trunk/test/bigrow.test |
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# 2001 September 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. |
# |
#*********************************************************************** |
# This file implements regression tests for SQLite library. The |
# focus of this file is stressing the library by putting large amounts |
# of data in a single row of a table. |
# |
# $Id: bigrow.test,v 1.5 2004/08/07 23:54:48 drh Exp $ |
|
set testdir [file dirname $argv0] |
source $testdir/tester.tcl |
|
# Make a big string that we can use for test data |
# |
do_test bigrow-1.0 { |
set ::bigstr {} |
for {set i 1} {$i<=9999} {incr i} { |
set sep [string index "abcdefghijklmnopqrstuvwxyz" [expr {$i%26}]] |
append ::bigstr "$sep [format %04d $i] " |
} |
string length $::bigstr |
} {69993} |
|
# Make a table into which we can insert some but records. |
# |
do_test bigrow-1.1 { |
execsql { |
CREATE TABLE t1(a text, b text, c text); |
SELECT name FROM sqlite_master |
WHERE type='table' OR type='index' |
ORDER BY name |
} |
} {t1} |
|
do_test bigrow-1.2 { |
set ::big1 [string range $::bigstr 0 65519] |
set sql "INSERT INTO t1 VALUES('abc'," |
append sql "'$::big1', 'xyz');" |
execsql $sql |
execsql {SELECT a, c FROM t1} |
} {abc xyz} |
do_test bigrow-1.3 { |
execsql {SELECT b FROM t1} |
} [list $::big1] |
do_test bigrow-1.4 { |
set ::big2 [string range $::bigstr 0 65520] |
set sql "INSERT INTO t1 VALUES('abc2'," |
append sql "'$::big2', 'xyz2');" |
set r [catch {execsql $sql} msg] |
lappend r $msg |
} {0 {}} |
do_test bigrow-1.4.1 { |
execsql {SELECT b FROM t1 ORDER BY c} |
} [list $::big1 $::big2] |
do_test bigrow-1.4.2 { |
execsql {SELECT c FROM t1 ORDER BY c} |
} {xyz xyz2} |
do_test bigrow-1.4.3 { |
execsql {DELETE FROM t1 WHERE a='abc2'} |
execsql {SELECT c FROM t1} |
} {xyz} |
|
do_test bigrow-1.5 { |
execsql { |
UPDATE t1 SET a=b, b=a; |
SELECT b,c FROM t1 |
} |
} {abc xyz} |
do_test bigrow-1.6 { |
execsql { |
SELECT * FROM t1 |
} |
} [list $::big1 abc xyz] |
do_test bigrow-1.7 { |
execsql { |
INSERT INTO t1 VALUES('1','2','3'); |
INSERT INTO t1 VALUES('A','B','C'); |
SELECT b FROM t1 WHERE a=='1'; |
} |
} {2} |
do_test bigrow-1.8 { |
execsql "SELECT b FROM t1 WHERE a=='$::big1'" |
} {abc} |
do_test bigrow-1.9 { |
execsql "SELECT b FROM t1 WHERE a!='$::big1' ORDER BY a" |
} {2 B} |
|
# Try doing some indexing on big columns |
# |
do_test bigrow-2.1 { |
execsql { |
CREATE INDEX i1 ON t1(a) |
} |
execsql "SELECT b FROM t1 WHERE a=='$::big1'" |
} {abc} |
do_test bigrow-2.2 { |
execsql { |
UPDATE t1 SET a=b, b=a |
} |
execsql "SELECT b FROM t1 WHERE a=='abc'" |
} [list $::big1] |
do_test bigrow-2.3 { |
execsql { |
UPDATE t1 SET a=b, b=a |
} |
execsql "SELECT b FROM t1 WHERE a=='$::big1'" |
} {abc} |
catch {unset ::bigstr} |
catch {unset ::big1} |
catch {unset ::big2} |
|
# Mosts of the tests above were created back when rows were limited in |
# size to 64K. Now rows can be much bigger. Test that logic. Also |
# make sure things work correctly at the transition boundries between |
# row sizes of 256 to 257 bytes and from 65536 to 65537 bytes. |
# |
# We begin by testing the 256..257 transition. |
# |
do_test bigrow-3.1 { |
execsql { |
DELETE FROM t1; |
INSERT INTO t1(a,b,c) VALUES('one','abcdefghijklmnopqrstuvwxyz0123','hi'); |
} |
execsql {SELECT a,length(b),c FROM t1} |
} {one 30 hi} |
do_test bigrow-3.2 { |
execsql { |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
} |
execsql {SELECT a,length(b),c FROM t1} |
} {one 240 hi} |
for {set i 1} {$i<10} {incr i} { |
do_test bigrow-3.3.$i { |
execsql "UPDATE t1 SET b=b||'$i'" |
execsql {SELECT a,length(b),c FROM t1} |
} "one [expr {240+$i}] hi" |
} |
|
# Now test the 65536..65537 row-size transition. |
# |
do_test bigrow-4.1 { |
execsql { |
DELETE FROM t1; |
INSERT INTO t1(a,b,c) VALUES('one','abcdefghijklmnopqrstuvwxyz0123','hi'); |
} |
execsql {SELECT a,length(b),c FROM t1} |
} {one 30 hi} |
do_test bigrow-4.2 { |
execsql { |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
UPDATE t1 SET b=b||b; |
} |
execsql {SELECT a,length(b),c FROM t1} |
} {one 122880 hi} |
do_test bigrow-4.3 { |
execsql { |
UPDATE t1 SET b=substr(b,1,65515) |
} |
execsql {SELECT a,length(b),c FROM t1} |
} {one 65515 hi} |
for {set i 1} {$i<10} {incr i} { |
do_test bigrow-4.4.$i { |
execsql "UPDATE t1 SET b=b||'$i'" |
execsql {SELECT a,length(b),c FROM t1} |
} "one [expr {65515+$i}] hi" |
} |
|
# Check to make sure the library recovers safely if a row contains |
# too much data. |
# |
do_test bigrow-5.1 { |
execsql { |
DELETE FROM t1; |
INSERT INTO t1(a,b,c) VALUES('one','abcdefghijklmnopqrstuvwxyz0123','hi'); |
} |
execsql {SELECT a,length(b),c FROM t1} |
} {one 30 hi} |
set i 1 |
for {set sz 60} {$sz<1048560} {incr sz $sz} { |
do_test bigrow-5.2.$i { |
execsql { |
UPDATE t1 SET b=b||b; |
SELECT a,length(b),c FROM t1; |
} |
} "one $sz hi" |
incr i |
} |
do_test bigrow-5.3 { |
catchsql {UPDATE t1 SET b=b||b} |
} {0 {}} |
do_test bigrow-5.4 { |
execsql {SELECT length(b) FROM t1} |
} 1966080 |
do_test bigrow-5.5 { |
catchsql {UPDATE t1 SET b=b||b} |
} {0 {}} |
do_test bigrow-5.6 { |
execsql {SELECT length(b) FROM t1} |
} 3932160 |
do_test bigrow-5.99 { |
execsql {DROP TABLE t1} |
} {} |
|
finish_test |