mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-12-15 07:29:41 +00:00
85 lines
2.3 KiB
Plaintext
85 lines
2.3 KiB
Plaintext
# 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.
|
|
#
|
|
#***********************************************************************
|
|
#
|
|
# This file contains a very simple test to show that the deferred tokens
|
|
# optimization is doing something.
|
|
#
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
source $testdir/malloc_common.tcl
|
|
ifcapable !fts3||!fts4_deferred {
|
|
finish_test
|
|
return
|
|
}
|
|
set testprefix fts3defer3
|
|
|
|
set nDoclist 3204
|
|
set nDoc 800
|
|
|
|
# Set up a database that contains 800 rows. Each row contains the document
|
|
# "b b", except for the row with docid=200, which contains "a b". Hence
|
|
# token "b" is extremely common and token "a" is not.
|
|
#
|
|
do_test 1.1 {
|
|
execsql {
|
|
CREATE VIRTUAL TABLE t1 USING fts4;
|
|
BEGIN;
|
|
}
|
|
for {set i 1} {$i <= $nDoc} {incr i} {
|
|
set document "b b"
|
|
if {$i==200} { set document "a b" }
|
|
execsql { INSERT INTO t1 (docid, content) VALUES($i, $document) }
|
|
}
|
|
execsql COMMIT
|
|
} {}
|
|
|
|
# Check that the db contains two doclists. A small one for "a" and a
|
|
# larger one for "b".
|
|
#
|
|
do_execsql_test 1.2 {
|
|
SELECT blockid, length(block) FROM t1_segments;
|
|
} [list 1 8 2 $nDoclist]
|
|
|
|
# Query for 'a b'. Although this test doesn't prove so, token "b" will
|
|
# be deferred because of the very large associated doclist.
|
|
#
|
|
do_execsql_test 1.3 {
|
|
SELECT docid, content FROM t1 WHERE t1 MATCH 'a b';
|
|
} {200 {a b}}
|
|
|
|
# Zero out the doclist for token "b" within the database file. Now the
|
|
# only queries that use token "b" that will work are those that defer
|
|
# it. Any query that tries to use the doclist belonging to token "b"
|
|
# will fail.
|
|
#
|
|
do_test 1.4 {
|
|
set fd [db incrblob t1_segments block 2]
|
|
puts -nonewline $fd [string repeat "\00" $nDoclist]
|
|
close $fd
|
|
} {}
|
|
|
|
# The first two queries succeed, as they defer token "b". The last one
|
|
# fails, as it tries to load the corrupt doclist.
|
|
#
|
|
do_execsql_test 1.5 {
|
|
SELECT docid, content FROM t1 WHERE t1 MATCH 'a b';
|
|
} {200 {a b}}
|
|
do_execsql_test 1.6 {
|
|
SELECT count(*) FROM t1 WHERE t1 MATCH 'a b';
|
|
} {1}
|
|
do_catchsql_test 1.7 {
|
|
SELECT count(*) FROM t1 WHERE t1 MATCH 'b';
|
|
} {1 {database disk image is malformed}}
|
|
|
|
|
|
finish_test
|