85 lines
2.3 KiB
Plaintext
85 lines
2.3 KiB
Plaintext
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# 2010 October 23
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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# This file contains a very simple test to show that the deferred tokens
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# optimization is doing something.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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source $testdir/malloc_common.tcl
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ifcapable !fts3||!fts4_deferred {
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finish_test
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return
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}
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set testprefix fts3defer3
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set nDoclist 3204
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set nDoc 800
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# Set up a database that contains 800 rows. Each row contains the document
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# "b b", except for the row with docid=200, which contains "a b". Hence
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# token "b" is extremely common and token "a" is not.
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#
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do_test 1.1 {
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execsql {
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CREATE VIRTUAL TABLE t1 USING fts4;
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BEGIN;
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}
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for {set i 1} {$i <= $nDoc} {incr i} {
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set document "b b"
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if {$i==200} { set document "a b" }
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execsql { INSERT INTO t1 (docid, content) VALUES($i, $document) }
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}
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execsql COMMIT
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} {}
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# Check that the db contains two doclists. A small one for "a" and a
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# larger one for "b".
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#
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do_execsql_test 1.2 {
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SELECT blockid, length(block) FROM t1_segments;
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} [list 1 8 2 $nDoclist]
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# Query for 'a b'. Although this test doesn't prove so, token "b" will
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# be deferred because of the very large associated doclist.
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#
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do_execsql_test 1.3 {
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SELECT docid, content FROM t1 WHERE t1 MATCH 'a b';
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} {200 {a b}}
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# Zero out the doclist for token "b" within the database file. Now the
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# only queries that use token "b" that will work are those that defer
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# it. Any query that tries to use the doclist belonging to token "b"
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# will fail.
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#
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do_test 1.4 {
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set fd [db incrblob t1_segments block 2]
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puts -nonewline $fd [string repeat "\00" $nDoclist]
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close $fd
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} {}
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# The first two queries succeed, as they defer token "b". The last one
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# fails, as it tries to load the corrupt doclist.
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#
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do_execsql_test 1.5 {
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SELECT docid, content FROM t1 WHERE t1 MATCH 'a b';
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} {200 {a b}}
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do_execsql_test 1.6 {
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SELECT count(*) FROM t1 WHERE t1 MATCH 'a b';
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} {1}
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do_catchsql_test 1.7 {
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SELECT count(*) FROM t1 WHERE t1 MATCH 'b';
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} {1 {database disk image is malformed}}
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finish_test
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