sqlite/test/fts3defer2.test
dan 8aaa252d8c Fix a buffer overread in fts3 that can occur if the database is corrupt.
FossilOrigin-Name: 84194c4195d7144ff7f9cedcdc74fdd908f3bfcd
2010-10-27 16:52:27 +00:00

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# 2010 October 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
source $testdir/malloc_common.tcl
ifcapable !fts3 { finish_test ; return }
set testprefix fts3defer2
proc mit {blob} {
set scan(littleEndian) i*
set scan(bigEndian) I*
binary scan $blob $scan($::tcl_platform(byteOrder)) r
return $r
}
db func mit mit
#-----------------------------------------------------------------------------
# This block of tests - fts3defer2-1.* - test the interaction of deferred NEAR
# expressions and the snippet, offsets and matchinfo functions.
#
do_execsql_test 1.1.1 {
CREATE VIRTUAL TABLE t1 USING fts4;
}
do_execsql_test 1.1.2 "INSERT INTO t1 VALUES('[string repeat {a } 20000]')"
do_execsql_test 1.1.3 "INSERT INTO t1 VALUES('[string repeat {z } 20000]')"
do_execsql_test 1.1.4 {
INSERT INTO t1 VALUES('a b c d e f a x y');
INSERT INTO t1 VALUES('');
INSERT INTO t1 VALUES('');
INSERT INTO t1 VALUES('');
INSERT INTO t1 VALUES('');
INSERT INTO t1 VALUES('');
INSERT INTO t1(t1) VALUES('optimize');
}
do_execsql_test 1.1.4 {
SELECT count(*) FROM t1_segments WHERE length(block)>10000;
UPDATE t1_segments SET block = zeroblob(length(block)) WHERE length(block)>10000;
} {2}
do_execsql_test 1.2.1 {
SELECT content FROM t1 WHERE t1 MATCH 'f (e NEAR/2 a)';
} {{a b c d e f a x y}}
do_execsql_test 1.2.2 {
SELECT snippet(t1, '[', ']'), offsets(t1), mit(matchinfo(t1))
FROM t1 WHERE t1 MATCH 'f (e NEAR/2 a)';
} [list \
{a b c d [e] [f] [a] x y} \
{0 1 8 1 0 0 10 1 0 2 12 1} \
[list 3 1 1 1 1 1 8 8 1 8 8 8 5001 9]
]
do_execsql_test 1.2.3 {
SELECT snippet(t1, '[', ']'), offsets(t1), mit(matchinfo(t1))
FROM t1 WHERE t1 MATCH 'f (e NEAR/3 a)';
} [list \
{[a] b c d [e] [f] [a] x y} \
{0 2 0 1 0 1 8 1 0 0 10 1 0 2 12 1} \
[list 3 1 1 1 1 1 8 8 2 8 8 8 5001 9]
]
do_execsql_test 1.3.1 { DROP TABLE t1 }
#-----------------------------------------------------------------------------
# Test cases fts3defer2-2.* focus specifically on the matchinfo function.
#
do_execsql_test 2.1.1 "CREATE VIRTUAL TABLE t2 USING fts4"
do_execsql_test 2.1.2 "INSERT INTO t2 VALUES('[string repeat {a } 10000]')"
do_execsql_test 2.1.3 "INSERT INTO t2 VALUES('b [string repeat {z } 10000]')"
do_execsql_test 2.1.4 [string repeat "INSERT INTO t2 VALUES('x');" 50]
do_execsql_test 2.1.5 {
INSERT INTO t2 VALUES('a b c d e f g');
INSERT INTO t2 VALUES('a b c d e f g');
}
foreach {tn sql} {
1 {}
2 { INSERT INTO t2(t2) VALUES('optimize') }
3 { UPDATE t2_segments SET block = zeroblob(length(block))
WHERE length(block)>10000;
}
} {
execsql $sql
do_execsql_test 2.2.$tn {
SELECT mit(matchinfo(t2)) FROM t2 WHERE t2 MATCH 'a b';
} [list \
[list 2 1 1 54 54 1 3 3 54 372 7] \
[list 2 1 1 54 54 1 3 3 54 372 7] \
]
}
do_execsql_test 2.3.1 {
CREATE VIRTUAL TABLE t3 USING fts4;
INSERT INTO t3 VALUES('a b c d e f');
INSERT INTO t3 VALUES('x b c d e f');
INSERT INTO t3 VALUES('d e f a b c');
INSERT INTO t3 VALUES('b c d e f');
INSERT INTO t3 VALUES('');
INSERT INTO t3 VALUES('');
INSERT INTO t3 VALUES('');
INSERT INTO t3 VALUES('');
INSERT INTO t3 VALUES('');
INSERT INTO t3 VALUES('');
}
do_execsql_test 2.3.2 "
INSERT INTO t3 VALUES('f e d c b [string repeat {a } 10000]')
"
foreach {tn sql} {
1 {}
2 { INSERT INTO t3(t3) VALUES('optimize') }
3 { UPDATE t3_segments SET block = zeroblob(length(block))
WHERE length(block)>10000;
}
} {
execsql $sql
do_execsql_test 2.4.$tn {
SELECT docid, mit(matchinfo(t3)) FROM t3 WHERE t3 MATCH '"a b c"';
} {1 {1 1 1 4 4 11 912 6} 3 {1 1 1 4 4 11 912 6}}
}
finish_test