summaryrefslogtreecommitdiff
path: root/test/fts3snippet.test
blob: 415251dcced746f95079689bd1085b513782f34b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
# 2010 January 07
#
# 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.
#
#*************************************************************************
#
# The tests in this file test the FTS3 auxillary functions offsets(), 
# snippet() and matchinfo() work. At time of writing, running this file 
# provides full coverage of fts3_snippet.c.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix fts3snippet

# If SQLITE_ENABLE_FTS3 is not defined, omit this file.
ifcapable !fts3 { finish_test ; return }
source $testdir/fts3_common.tcl

set sqlite_fts3_enable_parentheses 1
set DO_MALLOC_TEST 0

# Transform the list $L to its "normal" form. So that it can be compared to
# another list with the same set of elements using [string compare].
#
proc normalize {L} {
  set ret [list]
  foreach l $L {lappend ret $l}
  return $ret
}

proc do_offsets_test {name expr args} {
  set result [list]
  foreach a $args {
    lappend result [normalize $a]
  }
  do_select_test $name {
    SELECT offsets(ft) FROM ft WHERE ft MATCH $expr
  } $result
}
  
# Document text used by a few tests. Contains the English names of all
# integers between 1 and 300.
#
set numbers [normalize {
  one two three four five six seven eight nine ten eleven twelve thirteen
  fourteen fifteen sixteen seventeen eighteen nineteen twenty twentyone
  twentytwo twentythree twentyfour twentyfive twentysix twentyseven
  twentyeight twentynine thirty thirtyone thirtytwo thirtythree thirtyfour
  thirtyfive thirtysix thirtyseven thirtyeight thirtynine forty fortyone
  fortytwo fortythree fortyfour fortyfive fortysix fortyseven fortyeight
  fortynine fifty fiftyone fiftytwo fiftythree fiftyfour fiftyfive fiftysix
  fiftyseven fiftyeight fiftynine sixty sixtyone sixtytwo sixtythree sixtyfour
  sixtyfive sixtysix sixtyseven sixtyeight sixtynine seventy seventyone
  seventytwo seventythree seventyfour seventyfive seventysix seventyseven
  seventyeight seventynine eighty eightyone eightytwo eightythree eightyfour
  eightyfive eightysix eightyseven eightyeight eightynine ninety ninetyone
  ninetytwo ninetythree ninetyfour ninetyfive ninetysix ninetyseven
  ninetyeight ninetynine onehundred onehundredone onehundredtwo
  onehundredthree onehundredfour onehundredfive onehundredsix onehundredseven
  onehundredeight onehundrednine onehundredten onehundredeleven
  onehundredtwelve onehundredthirteen onehundredfourteen onehundredfifteen
  onehundredsixteen onehundredseventeen onehundredeighteen onehundrednineteen
  onehundredtwenty onehundredtwentyone onehundredtwentytwo
  onehundredtwentythree onehundredtwentyfour onehundredtwentyfive
  onehundredtwentysix onehundredtwentyseven onehundredtwentyeight
  onehundredtwentynine onehundredthirty onehundredthirtyone
  onehundredthirtytwo onehundredthirtythree onehundredthirtyfour
  onehundredthirtyfive onehundredthirtysix onehundredthirtyseven
  onehundredthirtyeight onehundredthirtynine onehundredforty
  onehundredfortyone onehundredfortytwo onehundredfortythree
  onehundredfortyfour onehundredfortyfive onehundredfortysix
  onehundredfortyseven onehundredfortyeight onehundredfortynine
  onehundredfifty onehundredfiftyone onehundredfiftytwo onehundredfiftythree
  onehundredfiftyfour onehundredfiftyfive onehundredfiftysix
  onehundredfiftyseven onehundredfiftyeight onehundredfiftynine
  onehundredsixty onehundredsixtyone onehundredsixtytwo onehundredsixtythree
  onehundredsixtyfour onehundredsixtyfive onehundredsixtysix
  onehundredsixtyseven onehundredsixtyeight onehundredsixtynine
  onehundredseventy onehundredseventyone onehundredseventytwo
  onehundredseventythree onehundredseventyfour onehundredseventyfive
  onehundredseventysix onehundredseventyseven onehundredseventyeight
  onehundredseventynine onehundredeighty onehundredeightyone
  onehundredeightytwo onehundredeightythree onehundredeightyfour
  onehundredeightyfive onehundredeightysix onehundredeightyseven
  onehundredeightyeight onehundredeightynine onehundredninety
  onehundredninetyone onehundredninetytwo onehundredninetythree
  onehundredninetyfour onehundredninetyfive onehundredninetysix
  onehundredninetyseven onehundredninetyeight onehundredninetynine twohundred
  twohundredone twohundredtwo twohundredthree twohundredfour twohundredfive
  twohundredsix twohundredseven twohundredeight twohundrednine twohundredten
  twohundredeleven twohundredtwelve twohundredthirteen twohundredfourteen
  twohundredfifteen twohundredsixteen twohundredseventeen twohundredeighteen
  twohundrednineteen twohundredtwenty twohundredtwentyone twohundredtwentytwo
  twohundredtwentythree twohundredtwentyfour twohundredtwentyfive
  twohundredtwentysix twohundredtwentyseven twohundredtwentyeight
  twohundredtwentynine twohundredthirty twohundredthirtyone
  twohundredthirtytwo twohundredthirtythree twohundredthirtyfour
  twohundredthirtyfive twohundredthirtysix twohundredthirtyseven
  twohundredthirtyeight twohundredthirtynine twohundredforty
  twohundredfortyone twohundredfortytwo twohundredfortythree
  twohundredfortyfour twohundredfortyfive twohundredfortysix
  twohundredfortyseven twohundredfortyeight twohundredfortynine
  twohundredfifty twohundredfiftyone twohundredfiftytwo twohundredfiftythree
  twohundredfiftyfour twohundredfiftyfive twohundredfiftysix
  twohundredfiftyseven twohundredfiftyeight twohundredfiftynine
  twohundredsixty twohundredsixtyone twohundredsixtytwo twohundredsixtythree
  twohundredsixtyfour twohundredsixtyfive twohundredsixtysix
  twohundredsixtyseven twohundredsixtyeight twohundredsixtynine
  twohundredseventy twohundredseventyone twohundredseventytwo
  twohundredseventythree twohundredseventyfour twohundredseventyfive
  twohundredseventysix twohundredseventyseven twohundredseventyeight
  twohundredseventynine twohundredeighty twohundredeightyone
  twohundredeightytwo twohundredeightythree twohundredeightyfour
  twohundredeightyfive twohundredeightysix twohundredeightyseven
  twohundredeightyeight twohundredeightynine twohundredninety
  twohundredninetyone twohundredninetytwo twohundredninetythree
  twohundredninetyfour twohundredninetyfive twohundredninetysix
  twohundredninetyseven twohundredninetyeight twohundredninetynine
  threehundred
}]

foreach {DO_MALLOC_TEST enc} {
  0 utf8
  1 utf8
  1 utf16
} {

  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config_lookaside db 0 0 0
  db eval "PRAGMA encoding = \"$enc\""

  # Set variable $T to the test name prefix for this iteration of the loop.
  #
  set T "fts3snippet-1.$enc"

  ##########################################################################
  # Test the offset function.
  #
  do_test $T.1.1 {
    execsql {
      CREATE VIRTUAL TABLE ft USING fts3;
      INSERT INTO ft VALUES('xxx xxx xxx xxx');
    }
  } {}
  do_offsets_test $T.1.2 {xxx} {0 0 0 3 0 0 4 3 0 0 8 3 0 0 12 3}
  do_offsets_test $T.1.3 {"xxx xxx"} {
      0 0  0 3     0 0  4 3     0 1  4 3     0 0  8 3 
      0 1  8 3     0 1 12 3
  }
  do_offsets_test $T.1.4 {"xxx xxx" xxx} {
      0 0  0 3     0 2  0 3     0 0  4 3     0 1  4 3 
      0 2  4 3     0 0  8 3     0 1  8 3     0 2  8 3 
      0 1 12 3     0 2 12 3
  }
  do_offsets_test $T.1.5 {xxx "xxx xxx"} {
      0 0  0 3     0 1  0 3     0 0  4 3     0 1  4 3 
      0 2  4 3     0 0  8 3     0 1  8 3     0 2  8 3 
      0 0 12 3     0 2 12 3
  }

  do_test $T.2.1 {
    set v1 [lrange $numbers 0 99]
    execsql {
      DROP TABLE IF EXISTS ft;
      CREATE VIRTUAL TABLE ft USING fts3(a, b);
      INSERT INTO ft VALUES($v1, $numbers);
      INSERT INTO ft VALUES($v1, NULL);
    }
  } {}

  set off [string first "twohundred " $numbers]
  do_offsets_test $T.2.1 {twohundred} [list 1 0 $off 10]

  set off [string first "onehundred " $numbers]
  do_offsets_test $T.2.2 {onehundred} \
    [list 0 0 $off 10 1 0 $off 10] [list 0 0 $off 10]

  # Test a corruption case:
  execsql { UPDATE ft_content SET c1b = 'hello world' WHERE c1b = $numbers }
  do_error_test $T.2.3 {
    SELECT offsets(ft) FROM ft WHERE ft MATCH 'onehundred'
  } {database disk image is malformed}
  
  ##########################################################################
  # Test the snippet function.
  #
  proc do_snippet_test {name expr iCol nTok args} {
    set res [list]
    foreach a $args { lappend res [string trim $a] }
    do_select_test $name {
      SELECT snippet(ft,'{','}','...',$iCol,$nTok) FROM ft WHERE ft MATCH $expr
    } $res
  }
  do_test $T.3.1 {
    execsql {
      DROP TABLE IF EXISTS ft;
      CREATE VIRTUAL TABLE ft USING fts3;
      INSERT INTO ft VALUES('one two three four five six seven eight nine ten');
    }
  } {}
  do_snippet_test $T.3.2  one    0 5 "{one} two three four five..."
  do_snippet_test $T.3.3  two    0 5 "one {two} three four five..."
  do_snippet_test $T.3.4  three  0 5 "one two {three} four five..."
  do_snippet_test $T.3.5  four   0 5 "...two three {four} five six..."
  do_snippet_test $T.3.6  five   0 5 "...three four {five} six seven..."
  do_snippet_test $T.3.7  six    0 5 "...four five {six} seven eight..."
  do_snippet_test $T.3.8  seven  0 5 "...five six {seven} eight nine..."
  do_snippet_test $T.3.9  eight  0 5 "...six seven {eight} nine ten"
  do_snippet_test $T.3.10 nine   0 5 "...six seven eight {nine} ten"
  do_snippet_test $T.3.11 ten    0 5 "...six seven eight nine {ten}"
  
  do_test $T.4.1 {
    execsql {
      INSERT INTO ft VALUES(
           'one two three four five '
        || 'six seven eight nine ten '
        || 'eleven twelve thirteen fourteen fifteen '
        || 'sixteen seventeen eighteen nineteen twenty '
        || 'one two three four five '
        || 'six seven eight nine ten '
        || 'eleven twelve thirteen fourteen fifteen '
        || 'sixteen seventeen eighteen nineteen twenty'
      );
    }
  } {}
  
  do_snippet_test $T.4.2 {one nine} 0 5 {
     {one} two three...eight {nine} ten
  } {
     {one} two three...eight {nine} ten...
  }
  
  do_snippet_test $T.4.3 {one nine} 0 -5 {
     {one} two three four five...six seven eight {nine} ten
  } {
     {one} two three four five...seven eight {nine} ten eleven...
  }
  do_snippet_test $T.4.3 {one nineteen} 0 -5 {
     ...eighteen {nineteen} twenty {one} two...
  }
  do_snippet_test $T.4.4 {two nineteen} 0 -5 {
     ...eighteen {nineteen} twenty one {two}...
  }
  do_snippet_test $T.4.5 {three nineteen} 0 -5 {
     ...{nineteen} twenty one two {three}...
  }
  
  do_snippet_test $T.4.6 {four nineteen} 0 -5 {
     ...two three {four} five six...seventeen eighteen {nineteen} twenty one...
  }
  do_snippet_test $T.4.7 {four NEAR nineteen} 0 -5 {
     ...seventeen eighteen {nineteen} twenty one...two three {four} five six...
  }
  
  do_snippet_test $T.4.8 {four nineteen} 0 5 {
     ...three {four} five...eighteen {nineteen} twenty...
  }
  do_snippet_test $T.4.9 {four NEAR nineteen} 0 5 {
     ...eighteen {nineteen} twenty...three {four} five...
  }
  do_snippet_test $T.4.10 {four NEAR nineteen} 0 -5 {
     ...seventeen eighteen {nineteen} twenty one...two three {four} five six...
  }
  do_snippet_test $T.4.11 {four NOT (nineteen twentyone)} 0 5 {
     ...two three {four} five six...
  } {
     ...two three {four} five six...
  }
  do_snippet_test $T.4.12 {four OR nineteen NEAR twentyone} 0 5 {
     ...two three {four} five six...
  } {
     ...two three {four} five six...
  }
  
  do_test $T.5.1 {
    execsql {
      DROP TABLE IF EXISTS ft;
      CREATE VIRTUAL TABLE ft USING fts3(a, b, c);
      INSERT INTO ft VALUES(
        'one two three four five', 
        'four five six seven eight', 
        'seven eight nine ten eleven'
      );
    }
  } {}
  
  do_snippet_test $T.5.2 {five} -1 3 {...three four {five}}
  do_snippet_test $T.5.3 {five}  0 3 {...three four {five}}
  do_snippet_test $T.5.4 {five}  1 3 {four {five} six...}
  do_snippet_test $T.5.5 {five}  2 3 {seven eight nine...}
  
  do_test $T.5.6 {
    execsql { UPDATE ft SET b = NULL }
  } {}
  
  do_snippet_test $T.5.7  {five} -1 3 {...three four {five}}
  do_snippet_test $T.5.8  {five}  0 3 {...three four {five}}
  do_snippet_test $T.5.9  {five}  1 3 {}
  do_snippet_test $T.5.10 {five}  2 3 {seven eight nine...}
  
  do_snippet_test $T.5.11 {one "seven eight nine"} -1 -3 {
    {one} two three...{seven} {eight} {nine}...
  }

  do_test $T.6.1 {
    execsql {
      DROP TABLE IF EXISTS ft;
      CREATE VIRTUAL TABLE ft USING fts3(x);
      INSERT INTO ft VALUES($numbers);
    }
  } {}
  do_snippet_test $T.6.2 {
    one fifty onehundred onehundredfifty twohundredfifty threehundred
  } -1 4 {
    {one}...{fifty}...{onehundred}...{onehundredfifty}...
  }
  do_snippet_test $T.6.3 {
    one fifty onehundred onehundredfifty twohundredfifty threehundred
  } -1 -4 {
    {one} two three four...fortyeight fortynine {fifty} fiftyone...ninetyeight ninetynine {onehundred} onehundredone...onehundredfortyeight onehundredfortynine {onehundredfifty} onehundredfiftyone...
  }

  do_test $T.7.1 {
    execsql {
      BEGIN;
        DROP TABLE IF EXISTS ft;
        CREATE VIRTUAL TABLE ft USING fts3(x);
    }
    set testresults [list]
    for {set i 1} {$i < 150} {incr i} {
      set commas [string repeat , $i]
      execsql {INSERT INTO ft VALUES('one' || $commas || 'two')}
      lappend testresults "{one}$commas{two}"
    }
    execsql COMMIT
  } {}
  eval [list do_snippet_test $T.7.2 {one two} -1 3] $testresults
  
  ##########################################################################
  # Test the matchinfo function.
  #
  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
  proc do_matchinfo_test {name expr args} {
    set res [list]
    foreach a $args { lappend res [normalize $a] }
    do_select_test $name {
      SELECT mit(matchinfo(ft)) FROM ft WHERE ft MATCH $expr
    } $res
  }
  do_test $T.8.1 {
    set ten {one two three four five six seven eight nine ten}
    execsql {
      DROP TABLE IF EXISTS ft;
      CREATE VIRTUAL TABLE ft USING fts3;
      INSERT INTO ft VALUES($ten);
      INSERT INTO ft VALUES($ten || ' ' || $ten);
    }
  } {}
  
  do_matchinfo_test $T.8.2 "one" {1 1  1 3 2} {1 1  2 3 2}
  do_matchinfo_test $T.8.3 "one NEAR/3 ten" {2 1  1 1 1 1 1 1}
  do_matchinfo_test $T.8.4 "five NEAR/4 ten" \
    {2 1  1 3 2  1 3 2} {2 1  2 3 2  2 3 2}
  do_matchinfo_test $T.8.5 "six NEAR/3 ten NEAR/3 two" \
    {3 1  1 1 1  1 1 1  1 1 1}
  do_matchinfo_test $T.8.6 "five NEAR/4 ten NEAR/3 two" \
    {3 1  2 2 1  1 1 1  1 1 1}

  do_test $T.9.1 {
    execsql {
      DROP TABLE IF EXISTS ft;
      CREATE VIRTUAL TABLE ft USING fts3(x, y);
    }
    foreach n {1 2 3} {
      set v1 [lrange $numbers 0 [expr $n*100]]
      set v2 [string trim [string repeat "$numbers " $n]]
      set docid [expr $n * 1000000]
      execsql { INSERT INTO ft(docid, x, y) VALUES($docid, $v1, $v2) }
    }
  } {}
  do_matchinfo_test $T.9.2 {two*}     \
    { 1 2    1   105 3   101 606 3}   \
    { 1 2    3   105 3   202 606 3}   \
    { 1 2    101 105 3   303 606 3}

  do_matchinfo_test $T.9.4 {"one* two*"}  \
    { 1 2    1 5 3   2 12 3}              \
    { 1 2    2 5 3   4 12 3}              \
    { 1 2    2 5 3   6 12 3}

  do_matchinfo_test $T.9.5 {twohundredfifty}  \
    { 1 2    0 1 1   1 6 3}                   \
    { 1 2    0 1 1   2 6 3}                   \
    { 1 2    1 1 1   3 6 3}

  do_matchinfo_test $T.9.6 {"threehundred one"} \
    { 1 2    0 0 0   1 3 2}                     \
    { 1 2    0 0 0   2 3 2}

  do_matchinfo_test $T.9.7 {one OR fivehundred} \
    { 2 2    1 3 3   1 6 3   0 0 0   0 0 0 }    \
    { 2 2    1 3 3   2 6 3   0 0 0   0 0 0 }    \
    { 2 2    1 3 3   3 6 3   0 0 0   0 0 0 }

  do_matchinfo_test $T.9.8 {two OR "threehundred one"} \
    { 2 2    1 3 3   1 6 3   0 0 0   0 3 2 }           \
    { 2 2    1 3 3   2 6 3   0 0 0   1 3 2 }           \
    { 2 2    1 3 3   3 6 3   0 0 0   2 3 2 }

  do_select_test $T.9.9 {
    SELECT mit(matchinfo(ft)), mit(matchinfo(ft))
    FROM ft WHERE ft MATCH 'two OR "threehundred one"' 
  } [normalize {
    {2 2 1 3 3 1 6 3 0 0 0 0 3 2}
    {2 2 1 3 3 1 6 3 0 0 0 0 3 2}
    {2 2 1 3 3 2 6 3 0 0 0 1 3 2}
    {2 2 1 3 3 2 6 3 0 0 0 1 3 2}
    {2 2 1 3 3 3 6 3 0 0 0 2 3 2}          
    {2 2 1 3 3 3 6 3 0 0 0 2 3 2}
  }]

  # EVIDENCE-OF: R-40630-02268 If used within a SELECT that uses the
  # "query by rowid" or "linear scan" strategies, then the snippet and
  # offsets both return an empty string, and the matchinfo function
  # returns a blob value zero bytes in size.
  #
  set r 1000000                   ;# A rowid that exists in table ft
  do_select_test $T.10.0 { SELECT rowid FROM ft WHERE rowid = $r } $r
  do_select_test $T.10.1 {
    SELECT length(offsets(ft)), typeof(offsets(ft)) FROM ft;
  } {0 text 0 text 0 text}
  do_select_test $T.10.2 {
    SELECT length(offsets(ft)), typeof(offsets(ft)) FROM ft WHERE rowid = $r
  } {0 text}
  do_select_test $T.10.3 {
    SELECT length(snippet(ft)), typeof(snippet(ft)) FROM ft;
  } {0 text 0 text 0 text}
  do_select_test $T.10.4 {
    SELECT length(snippet(ft)), typeof(snippet(ft)) FROM ft WHERE rowid = $r;
  } {0 text}
  do_select_test $T.10.5 {
    SELECT length(matchinfo(ft)), typeof(matchinfo(ft)) FROM ft;
  } {0 blob 0 blob 0 blob}
  do_select_test $T.10.6 {
    SELECT length(matchinfo(ft)), typeof(matchinfo(ft)) FROM ft WHERE rowid = $r
  } {0 blob}
}

#-------------------------------------------------------------------------
# Test an interaction between the snippet() function and OR clauses.
#
do_execsql_test 2.1 {
  CREATE VIRTUAL TABLE t2 USING fts4;
  INSERT INTO t2 VALUES('one two three four five');
  INSERT INTO t2 VALUES('two three four five one');
  INSERT INTO t2 VALUES('three four five one two');
  INSERT INTO t2 VALUES('four five one two three');
  INSERT INTO t2 VALUES('five one two three four');
}

do_execsql_test 2.2 {
  SELECT snippet(t2, '[', ']') FROM t2 WHERE t2 MATCH 'one OR (four AND six)'
} {
  {[one] two three [four] five}
  {two three [four] five [one]}
  {three [four] five [one] two}
  {[four] five [one] two three}
  {five [one] two three [four]}
}

do_execsql_test 2.3 {
  SELECT snippet(t2, '[', ']') FROM t2 
  WHERE t2 MATCH 'one OR (four AND six)' 
  ORDER BY docid DESC
} {
  {five [one] two three [four]}
  {[four] five [one] two three}
  {three [four] five [one] two}
  {two three [four] five [one]}
  {[one] two three [four] five}
}

do_execsql_test 2.4 {
  INSERT INTO t2 VALUES('six');
}

do_execsql_test 2.5 {
  SELECT snippet(t2, '[', ']') FROM t2 WHERE t2 MATCH 'one OR (four AND six)'
} {
  {[one] two three [four] five}
  {two three [four] five [one]}
  {three [four] five [one] two}
  {[four] five [one] two three}
  {five [one] two three [four]}
}

do_execsql_test 2.6 {
  SELECT snippet(t2, '[', ']') FROM t2 
  WHERE t2 MATCH 'one OR (four AND six)' 
  ORDER BY docid DESC
} {
  {five [one] two three [four]}
  {[four] five [one] two three}
  {three [four] five [one] two}
  {two three [four] five [one]}
  {[one] two three [four] five}
}

set sqlite_fts3_enable_parentheses 0
finish_test