/trunk/test/zeroblob.test |
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# 2007 May 02 |
# |
# 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 of the zero-filled blob functionality |
# including the sqlite3_bind_zeroblob(), sqlite3_result_zeroblob(), |
# and the built-in zeroblob() SQL function. |
# |
# $Id: zeroblob.test,v 1.14 2009/07/14 02:33:02 drh Exp $ |
|
set testdir [file dirname $argv0] |
source $testdir/tester.tcl |
|
ifcapable !incrblob { |
finish_test |
return |
} |
|
# When zeroblob() is used for the last field of a column, then the |
# content of the zeroblob is never instantiated on the VDBE stack. |
# But it does get inserted into the database correctly. |
# |
db eval {PRAGMA cache_size=10} |
sqlite3_memory_highwater 1 |
unset -nocomplain memused |
set memused [sqlite3_memory_used] |
do_test zeroblob-1.1 { |
execsql { |
CREATE TABLE t1(a,b,c,d); |
} |
set ::sqlite3_max_blobsize 0 |
execsql { |
INSERT INTO t1 VALUES(2,3,4,zeroblob(1000000)); |
} |
set ::sqlite3_max_blobsize |
} {10} |
do_test zeroblob-1.1.1 { |
expr {[sqlite3_memory_highwater]<$::memused+25000} |
} {1} |
do_test zeroblob-1.2 { |
execsql { |
SELECT length(d) FROM t1 |
} |
} {1000000} |
|
# If a non-NULL column follows the zeroblob, then the content of |
# the zeroblob must be instantiated. |
# |
do_test zeroblob-1.3 { |
set ::sqlite3_max_blobsize 0 |
execsql { |
INSERT INTO t1 VALUES(3,4,zeroblob(10000),5); |
} |
set ::sqlite3_max_blobsize |
} {10010} |
do_test zeroblob-1.4 { |
execsql { |
SELECT length(c), length(d) FROM t1 |
} |
} {1 1000000 10000 1} |
|
# Multiple zeroblobs can appear at the end of record. No instantiation |
# of the blob content occurs on the stack. |
# |
do_test zeroblob-1.5 { |
set ::sqlite3_max_blobsize 0 |
execsql { |
INSERT INTO t1 VALUES(4,5,zeroblob(10000),zeroblob(10000)); |
} |
set ::sqlite3_max_blobsize |
} {11} |
do_test zeroblob-1.6 { |
execsql { |
SELECT length(c), length(d) FROM t1 |
} |
} {1 1000000 10000 1 10000 10000} |
|
# NULLs can follow the zeroblob() or be intermixed with zeroblobs and |
# no instantiation of the zeroblobs occurs on the stack. |
# |
do_test zeroblob-1.7 { |
set ::sqlite3_max_blobsize 0 |
execsql { |
INSERT INTO t1 VALUES(5,zeroblob(10000),NULL,zeroblob(10000)); |
} |
set ::sqlite3_max_blobsize |
} {10} |
do_test zeroblob-1.8 { |
execsql { |
SELECT length(b), length(d) FROM t1 WHERE a=5 |
} |
} {10000 10000} |
|
# Comparisons against zeroblobs work. |
# |
do_test zeroblob-2.1 { |
execsql { |
SELECT a FROM t1 WHERE b=zeroblob(10000) |
} |
} {5} |
|
# Comparisons against zeroblobs work even when indexed. |
# |
do_test zeroblob-2.2 { |
execsql { |
CREATE INDEX i1_1 ON t1(b); |
SELECT a FROM t1 WHERE b=zeroblob(10000); |
} |
} {5} |
|
# DISTINCT works for zeroblobs |
# |
ifcapable bloblit&&subquery&&compound { |
do_test zeroblob-3.1 { |
execsql { |
SELECT count(DISTINCT a) FROM ( |
SELECT x'00000000000000000000' AS a |
UNION ALL |
SELECT zeroblob(10) AS a |
) |
} |
} {1} |
} |
|
# Concatentation works with zeroblob |
# |
ifcapable bloblit { |
do_test zeroblob-4.1 { |
execsql { |
SELECT hex(zeroblob(2) || x'61') |
} |
} {000061} |
} |
|
# Check various CAST(...) operations on zeroblob. |
# |
do_test zeroblob-5.1 { |
execsql { |
SELECT CAST (zeroblob(100) AS REAL); |
} |
} {0.0} |
do_test zeroblob-5.2 { |
execsql { |
SELECT CAST (zeroblob(100) AS INTEGER); |
} |
} {0} |
do_test zeroblob-5.3 { |
execsql { |
SELECT CAST (zeroblob(100) AS TEXT); |
} |
} {{}} |
do_test zeroblob-5.4 { |
execsql { |
SELECT CAST(zeroblob(100) AS BLOB); |
} |
} [execsql {SELECT zeroblob(100)}] |
|
|
# Check for malicious use of zeroblob. Make sure nothing crashes. |
# |
do_test zeroblob-6.1.1 { |
execsql {select zeroblob(-1)} |
} {{}} |
do_test zeroblob-6.1.2 { |
execsql {select zeroblob(-10)} |
} {{}} |
do_test zeroblob-6.1.3 { |
execsql {select zeroblob(-100)} |
} {{}} |
do_test zeroblob-6.2 { |
execsql {select length(zeroblob(-1))} |
} {0} |
do_test zeroblob-6.3 { |
execsql {select zeroblob(-1)|1} |
} {1} |
do_test zeroblob-6.4 { |
catchsql {select length(zeroblob(2147483648))} |
} {1 {string or blob too big}} |
do_test zeroblob-6.5 { |
catchsql {select zeroblob(2147483648)} |
} {1 {string or blob too big}} |
do_test zeroblob-6.6 { |
execsql {select hex(zeroblob(-1))} |
} {{}} |
do_test zeroblob-6.7 { |
execsql {select typeof(zeroblob(-1))} |
} {blob} |
|
# Test bind_zeroblob() |
# |
sqlite3_memory_highwater 1 |
unset -nocomplain memused |
set memused [sqlite3_memory_used] |
do_test zeroblob-7.1 { |
set ::STMT [sqlite3_prepare $::DB "SELECT length(?)" -1 DUMMY] |
set ::sqlite3_max_blobsize 0 |
sqlite3_bind_zeroblob $::STMT 1 450000 |
sqlite3_step $::STMT |
} {SQLITE_ROW} |
do_test zeroblob-7.2 { |
sqlite3_column_int $::STMT 0 |
} {450000} |
do_test zeroblob-7.3 { |
sqlite3_finalize $::STMT |
} {SQLITE_OK} |
do_test zeroblob-7.4 { |
set ::sqlite3_max_blobsize |
} {0} |
do_test zeroblob-7.5 { |
expr {[sqlite3_memory_highwater]<$::memused+10000} |
} {1} |
|
# Test that MakeRecord can handle a value with some real content |
# and a zero-blob tail. |
# |
do_test zeroblob-8.1 { |
llength [execsql { |
SELECT 'hello' AS a, zeroblob(10) as b from t1 ORDER BY a, b; |
}] |
} {8} |
|
|
# Ticket #3965 |
# zeroblobs on either size of an IN operator |
# |
do_test zeroblob-9.1 { |
db eval {SELECT x'0000' IN (x'000000')} |
} {0} |
do_test zeroblob-9.2 { |
db eval {SELECT x'0000' IN (x'0000')} |
} {1} |
do_test zeroblob-9.3 { |
db eval {SELECT zeroblob(2) IN (x'000000')} |
} {0} |
do_test zeroblob-9.4 { |
db eval {SELECT zeroblob(2) IN (x'0000')} |
} {1} |
do_test zeroblob-9.5 { |
db eval {SELECT x'0000' IN (zeroblob(3))} |
} {0} |
do_test zeroblob-9.6 { |
db eval {SELECT x'0000' IN (zeroblob(2))} |
} {1} |
do_test zeroblob-9.7 { |
db eval {SELECT zeroblob(2) IN (zeroblob(3))} |
} {0} |
do_test zeroblob-9.8 { |
db eval {SELECT zeroblob(2) IN (zeroblob(2))} |
} {1} |
|
|
finish_test |