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test/spellfix4.test
363 строки7 KB
drh
Limit the size of input strings to the (disused) spellfix extension
19 май 2026, 13:33
19 май 2026, 13:3362587d2
# 2018-02-14
#
# 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.
#
#***********************************************************************
#
# Test cases for the editdist3() function in the spellfix extension.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix spellfix4

ifcapable !vtab { finish_test ; return }

load_static_extension db spellfix

do_execsql_test 100 {
  CREATE TABLE cost1(iLang, cFrom, cTo, iCost);
  INSERT INTO cost1 VALUES
    (0, '', '?',  97),
    (0, '?', '',  98),
    (0, '?', '?', 99),
    (0, 'm', 'n', 50),
    (0, 'n', 'm', 50)
  ;
  SELECT editdist3('cost1');
  SELECT editdist3('anchor','amchor');
} {{} 50}
do_execsql_test 110 {
  SELECT editdist3('anchor','anchoxr');
} {97}
do_execsql_test 111 {
  SELECT editdist3('anchor','xanchor');
} {97}
do_execsql_test 112 {
  SELECT editdist3('anchor','anchorx');
} {97}
do_execsql_test 120 {
  SELECT editdist3('anchor','anchr');
} {98}
do_execsql_test 121 {
  SELECT editdist3('anchor','ancho');
} {98}
do_execsql_test 122 {
  SELECT editdist3('anchor','nchor');
} {98}
do_execsql_test 130 {
  SELECT editdist3('anchor','anchur');
} {99}
do_execsql_test 131 {
  SELECT editdist3('anchor','onchor');
} {99}
do_execsql_test 132 {
  SELECT editdist3('anchor','anchot');
} {99}
do_execsql_test 140 {
  SELECT editdist3('anchor','omchor');
} {149}

do_execsql_test 200 {
  INSERT INTO cost1 VALUES
    (0, 'a', 'ä', 5),
    (0, 'ss', 'ß', 8)
  ;
  SELECT editdist3('cost1');
  SELECT editdist3('strasse','straße');
  SELECT editdist3('straße','strasse');
} {{} 8 196}
do_execsql_test 210 {
  SELECT editdist3('baume','bäume');
} {5}
do_execsql_test 220 {
  SELECT editdist3('baum','bäume');
} {102}
do_execsql_test 230 {
  INSERT INTO cost1 VALUES
    (0, 'ä', 'a', 5),
    (0, 'ß', 'ss', 8)
  ;
  SELECT editdist3('cost1');
  SELECT editdist3('strasse','straße');
  SELECT editdist3('straße','strasse');
} {{} 8 8}

do_execsql_test 300 {
  DELETE FROM cost1;
  INSERT INTO cost1 VALUES
    (0, '', '?',  97),
    (0, '?', '',  98),
    (0, '?', '?', 99),
    (0, 'a', 'e', 50),
    (0, 'a', 'i', 70),
    (0, 'a', 'o', 75),
    (0, 'a', 'u', 81),
    (0, 'e', 'a', 50),
    (0, 'e', 'i', 52),
    (0, 'e', 'o', 72),
    (0, 'e', 'u', 82),
    (0, 'i', 'a', 70),
    (0, 'i', 'e', 52),
    (0, 'i', 'o', 75),
    (0, 'i', 'u', 83),
    (0, 'o', 'a', 75),
    (0, 'o', 'e', 72),
    (0, 'o', 'i', 75),
    (0, 'o', 'u', 40),
    (0, 'u', 'a', 81),
    (0, 'u', 'e', 82),
    (0, 'u', 'i', 83),
    (0, 'u', 'o', 40),
    (0, 'm', 'n', 45),
    (0, 'n', 'm', 45)
  ;
  CREATE TABLE words(x TEXT);
  INSERT INTO words VALUES
   ('abraham'),
   ('action'),
   ('africa'),
   ('aladdin'),
   ('alert'),
   ('alien'),
   ('amazon'),
   ('analog'),
   ('animal'),
   ('apollo'),
   ('archive'),
   ('arnold'),
   ('aspirin'),
   ('august'),
   ('average'),
   ('bahama'),
   ('bambino'),
   ('barcode'),
   ('bazooka'),
   ('belgium'),
   ('between'),
   ('biology'),
   ('blonde'),
   ('border'),
   ('brave'),
   ('british'),
   ('bucket'),
   ('button'),
   ('caesar'),
   ('camilla'),
   ('cannon'),
   ('caramel'),
   ('carpet'),
   ('catalog'),
   ('century'),
   ('chaos'),
   ('chef'),
   ('china'),
   ('circus'),
   ('classic'),
   ('clinic'),
   ('coconut'),
   ('combine'),
   ('complex'),
   ('congo'),
   ('convert'),
   ('cosmos'),
   ('crack'),
   ('crown'),
   ('cyclone'),
   ('deal'),
   ('delete'),
   ('denver'),
   ('detail'),
   ('diana'),
   ('direct'),
   ('dolby'),
   ('double'),
   ('dublin'),
   ('echo'),
   ('edition'),
   ('electra'),
   ('emotion'),
   ('enjoy'),
   ('escape'),
   ('everest'),
   ('exile'),
   ('express'),
   ('family'),
   ('ferrari'),
   ('filter'),
   ('fish'),
   ('florida'),
   ('ford'),
   ('forum'),
   ('frank'),
   ('frozen'),
   ('gallery'),
   ('garlic'),
   ('geneva'),
   ('gibson'),
   ('gloria'),
   ('gordon'),
   ('gravity'),
   ('ground'),
   ('habitat'),
   ('harlem'),
   ('hazard'),
   ('herbert'),
   ('hobby'),
   ('house'),
   ('icon'),
   ('immune'),
   ('india'),
   ('inside'),
   ('isotope'),
   ('jamaica'),
   ('jazz'),
   ('joker'),
   ('juliet'),
   ('jupiter'),
   ('kevin'),
   ('korea'),
   ('latin'),
   ('legal'),
   ('lexicon'),
   ('limbo'),
   ('lithium'),
   ('logo'),
   ('lucas'),
   ('madrid'),
   ('major'),
   ('manual'),
   ('mars'),
   ('maximum'),
   ('medical'),
   ('mental'),
   ('meter'),
   ('miguel'),
   ('mimosa'),
   ('miranda'),
   ('modern'),
   ('money'),
   ('morgan'),
   ('motor'),
   ('mystic'),
   ('nebula'),
   ('network'),
   ('nice'),
   ('nitro'),
   ('norway'),
   ('nurse'),
   ('octavia'),
   ('olympic'),
   ('opus'),
   ('orient'),
   ('othello'),
   ('pacific'),
   ('panama'),
   ('paper'),
   ('parking'),
   ('pasta'),
   ('paul'),
   ('people'),
   ('permit'),
   ('phrase'),
   ('pilgrim'),
   ('planet'),
   ('pocket'),
   ('police'),
   ('popular'),
   ('prefer'),
   ('presto'),
   ('private'),
   ('project'),
   ('proxy'),
   ('python'),
   ('quota'),
   ('rainbow'),
   ('raymond'),
   ('region'),
   ('report'),
   ('reward'),
   ('risk'),
   ('robot'),
   ('rose'),
   ('russian'),
   ('sailor'),
   ('salt'),
   ('saturn'),
   ('scorpio'),
   ('second'),
   ('seminar'),
   ('shadow'),
   ('shave'),
   ('shock'),
   ('silence'),
   ('sinatra'),
   ('sleep'),
   ('social'),
   ('sonata'),
   ('spain'),
   ('sphere'),
   ('spray'),
   ('state'),
   ('stone'),
   ('strong'),
   ('sugar'),
   ('supreme'),
   ('swing'),
   ('talent'),
   ('telecom'),
   ('thermos'),
   ('tina'),
   ('tommy'),
   ('torso'),
   ('trade'),
   ('trick'),
   ('tropic'),
   ('turtle'),
   ('uniform'),
   ('user'),
   ('vega'),
   ('vertigo'),
   ('village'),
   ('visible'),
   ('vocal'),
   ('voyage'),
   ('weekend'),
   ('winter'),
   ('year'),
   ('zipper')
  ;
  SELECT editdist3('cost1');
} {{}}
do_execsql_test 310 {
  SELECT editdist3(a.x,b.x), a.x, b.x
    FROM words a, words b
   WHERE a.x<b.x
   ORDER BY 1, 2
   LIMIT 20
} {139 bucket pocket 144 meter motor 149 manual mental 169 crack trick 173 sinatra sonata 174 edition emotion 174 major motor 174 risk rose 174 state stone 194 deal detail 196 alert talent 196 analog catalog 196 deal legal 196 ford forum 196 risk trick 196 stone strong 197 china tina 197 congo logo 197 diana tina 197 florida gloria}
do_execsql_test 320 {
  SELECT md5sum(ed||'/'||sx||'/'||sy||',') FROM (
      SELECT editdist3(a.x,b.x) AS ed, a.x AS sx, b.x AS sy
        FROM words a, words b
       WHERE a.x<b.x
       ORDER BY 1, 2
  )
} {69d0a31872203a775e19325ea98cd053}

do_catchsql_test 400 {
  SELECT editdist3(format('%.10001c','x'),'abc');
} {1 {string or blob too big}}
do_catchsql_test 401 {
  SELECT editdist3('xxxabc',format('%.10001c','x'));
} {1 {string or blob too big}}
do_catchsql_test 410 {
  SELECT editdist3(format('abc%.9997c','x'),format('abc%.9997c','x'));
} {0 0}

finish_test