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219 lines
6.3 KiB
Plaintext
219 lines
6.3 KiB
Plaintext
# 2007 April 26
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#
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# The author disclaims copyright to this source code.
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#
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#*************************************************************************
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# This file implements tests for prefix-searching in the fts3
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# component of the SQLite library.
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#
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# $Id: fts3an.test,v 1.2 2007/12/13 21:54:11 drh Exp $
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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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# If SQLITE_ENABLE_FTS3 is defined, omit this file.
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ifcapable !fts3 {
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finish_test
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return
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}
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# A large string to prime the pump with.
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set text {
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Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Maecenas
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iaculis mollis ipsum. Praesent rhoncus placerat justo. Duis non quam
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sed turpis posuere placerat. Curabitur et lorem in lorem porttitor
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aliquet. Pellentesque bibendum tincidunt diam. Vestibulum blandit
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ante nec elit. In sapien diam, facilisis eget, dictum sed, viverra
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at, felis. Vestibulum magna. Sed magna dolor, vestibulum rhoncus,
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ornare vel, vulputate sit amet, felis. Integer malesuada, tellus at
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luctus gravida, diam nunc porta nibh, nec imperdiet massa metus eu
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lectus. Aliquam nisi. Nunc fringilla nulla at lectus. Suspendisse
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potenti. Cum sociis natoque penatibus et magnis dis parturient
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montes, nascetur ridiculus mus. Pellentesque odio nulla, feugiat eu,
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suscipit nec, consequat quis, risus.
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}
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db eval {
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CREATE VIRTUAL TABLE t1 USING fts3(c);
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INSERT INTO t1(rowid, c) VALUES(1, $text);
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INSERT INTO t1(rowid, c) VALUES(2, 'Another lovely row');
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}
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# Exact match
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do_test fts3an-1.1 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH 'lorem'"
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} {1}
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# And a prefix
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do_test fts3an-1.2 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH 'lore*'"
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} {1}
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# Prefix includes exact match
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do_test fts3an-1.3 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH 'lorem*'"
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} {1}
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# Make certain everything isn't considered a prefix!
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do_test fts3an-1.4 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH 'lore'"
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} {}
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# Prefix across multiple rows.
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do_test fts3an-1.5 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH 'lo*'"
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} {1 2}
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# Likewise, with multiple hits in one document.
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do_test fts3an-1.6 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH 'l*'"
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} {1 2}
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# Prefix which should only hit one document.
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do_test fts3an-1.7 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH 'lov*'"
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} {2}
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# * not at end is dropped.
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do_test fts3an-1.8 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH 'lo *'"
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} {}
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# Stand-alone * is dropped.
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do_test fts3an-1.9 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH '*'"
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} {}
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# Phrase-query prefix.
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do_test fts3an-1.10 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH '\"lovely r*\"'"
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} {2}
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do_test fts3an-1.11 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH '\"lovely r\"'"
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} {}
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# Phrase query with multiple prefix matches.
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do_test fts3an-1.12 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH '\"a* l*\"'"
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} {1 2}
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# Phrase query with multiple prefix matches.
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do_test fts3an-1.13 {
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execsql "SELECT rowid FROM t1 WHERE t1 MATCH '\"a* l* row\"'"
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} {2}
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# Test across updates (and, by implication, deletes).
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# Version of text without "lorem".
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regsub -all {[Ll]orem} $text '' ntext
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db eval {
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CREATE VIRTUAL TABLE t2 USING fts3(c);
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INSERT INTO t2(rowid, c) VALUES(1, $text);
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INSERT INTO t2(rowid, c) VALUES(2, 'Another lovely row');
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UPDATE t2 SET c = $ntext WHERE rowid = 1;
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}
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# Can't see lorem as an exact match.
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do_test fts3an-2.1 {
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execsql "SELECT rowid FROM t2 WHERE t2 MATCH 'lorem'"
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} {}
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# Can't see a prefix of lorem, either.
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do_test fts3an-2.2 {
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execsql "SELECT rowid FROM t2 WHERE t2 MATCH 'lore*'"
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} {}
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# Can see lovely in the other document.
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do_test fts3an-2.3 {
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execsql "SELECT rowid FROM t2 WHERE t2 MATCH 'lo*'"
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} {2}
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# Can still see other hits.
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do_test fts3an-2.4 {
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execsql "SELECT rowid FROM t2 WHERE t2 MATCH 'l*'"
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} {1 2}
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# Prefix which should only hit one document.
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do_test fts3an-2.5 {
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execsql "SELECT rowid FROM t2 WHERE t2 MATCH 'lov*'"
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} {2}
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# Test with a segment which will have multiple levels in the tree.
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# Build a big document with lots of unique terms.
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set bigtext $text
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foreach c {a b c d e} {
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regsub -all {[A-Za-z]+} $bigtext "&$c" t
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append bigtext $t
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}
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# Populate a table with many copies of the big document, so that we
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# can test the number of hits found. Populate $ret with the expected
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# hit counts for each row. offsets() returns 4 elements for every
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# hit. We'll have 6 hits for row 1, 1 for row 2, and 6*(2^5)==192 for
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# $bigtext.
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set ret {6 1}
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db eval {
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BEGIN;
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CREATE VIRTUAL TABLE t3 USING fts3(c);
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INSERT INTO t3(rowid, c) VALUES(1, $text);
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INSERT INTO t3(rowid, c) VALUES(2, 'Another lovely row');
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}
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for {set i 0} {$i<68} {incr i} {
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db eval {INSERT INTO t3(rowid, c) VALUES(3+$i, $bigtext)}
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lappend ret 192
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}
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db eval {COMMIT;}
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# Test that we get the expected number of hits.
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do_test fts3an-3.1 {
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set t {}
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db eval {SELECT offsets(t3) as o FROM t3 WHERE t3 MATCH 'l*'} {
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set l [llength $o]
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lappend t [expr {$l/4}]
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}
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set t
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} $ret
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# Test a boundary condition: More than 2^16 terms that match a searched for
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# prefix in a single segment.
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#
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puts "This next test can take a little while (~ 30 seconds)..."
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do_test fts3an-4.1 {
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execsql { CREATE VIRTUAL TABLE ft USING fts3(x) }
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execsql BEGIN
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execsql { INSERT INTO ft VALUES(NULL) }
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 2
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 4
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 8
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 16
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 32
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 64
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 128
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 256
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 512
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 1024
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 2048
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 4096
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 8192
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 16384
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 32768
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 65536
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execsql { INSERT INTO ft SELECT * FROM ft } ;# 131072
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execsql COMMIT
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execsql { UPDATE ft SET x = 'abc' || rowid }
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execsql { SELECT count(*) FROM ft WHERE x MATCH 'abc*' }
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} {131072}
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finish_test
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