gitlab.com/CoiaPrant/sqlite3@v1.19.1/testdata/tcl/fts3expr.test (about)

     1  # 2006 September 9
     2  #
     3  # The author disclaims copyright to this source code.  In place of
     4  # a legal notice, here is a blessing:
     5  #
     6  #    May you do good and not evil.
     7  #    May you find forgiveness for yourself and forgive others.
     8  #    May you share freely, never taking more than you give.
     9  #
    10  #*************************************************************************
    11  # This file implements regression tests for SQLite library.  The
    12  # focus of this script is testing the FTS3 module.
    13  #
    14  # $Id: fts3expr.test,v 1.9 2009/07/28 16:44:26 danielk1977 Exp $
    15  #
    16  
    17  set testdir [file dirname $argv0]
    18  source $testdir/tester.tcl
    19  
    20  # If SQLITE_ENABLE_FTS3 is defined, omit this file.
    21  ifcapable !fts3 {
    22    finish_test
    23    return
    24  }
    25  
    26  set sqlite_fts3_enable_parentheses 1
    27  
    28  proc test_fts3expr {expr} {
    29    db one {SELECT fts3_exprtest('simple', $expr, 'a', 'b', 'c')}
    30  }
    31  
    32  do_test fts3expr-1.0 {
    33    test_fts3expr "abcd"
    34  } {PHRASE 3 0 abcd}
    35  do_test fts3expr-1.1 {
    36    test_fts3expr " tag "
    37  } {PHRASE 3 0 tag}
    38  
    39  do_test fts3expr-1.2 {
    40    test_fts3expr "ab AND cd"
    41  } {AND {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    42  do_test fts3expr-1.2.1 {
    43    test_fts3expr "ab cd"
    44  } {AND {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    45  do_test fts3expr-1.3 {
    46    test_fts3expr "ab OR cd"
    47  } {OR {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    48  do_test fts3expr-1.4 {
    49    test_fts3expr "ab NOT cd"
    50  } {NOT {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    51  do_test fts3expr-1.5 {
    52    test_fts3expr "ab NEAR cd"
    53  } {NEAR/10 {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    54  do_test fts3expr-1.6.1 {
    55    test_fts3expr "ab NEAR/5 cd"
    56  } {NEAR/5 {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    57  do_test fts3expr-1.6.2 {
    58    test_fts3expr "ab NEAR/87654321 cd"
    59  } {NEAR/87654321 {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    60  do_test fts3expr-1.6.3 {
    61    test_fts3expr "ab NEAR/7654321 cd"
    62  } {NEAR/7654321 {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    63  do_test fts3expr-1.6.4 {
    64    test_fts3expr "ab NEAR/654321 cd"
    65  } {NEAR/654321 {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    66  do_test fts3expr-1.6.5 {
    67    test_fts3expr "ab NEAR/54321 cd"
    68  } {NEAR/54321 {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    69  do_test fts3expr-1.6.6 {
    70    test_fts3expr "ab NEAR/4321 cd"
    71  } {NEAR/4321 {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    72  do_test fts3expr-1.6.7 {
    73    test_fts3expr "ab NEAR/321 cd"
    74  } {NEAR/321 {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    75  do_test fts3expr-1.6.8 {
    76    test_fts3expr "ab NEAR/21 cd"
    77  } {NEAR/21 {PHRASE 3 0 ab} {PHRASE 3 0 cd}}
    78  
    79  do_test fts3expr-1.7 {
    80    test_fts3expr {"one two three"}
    81  } {PHRASE 3 0 one two three}
    82  do_test fts3expr-1.8.1 {
    83    test_fts3expr {zero "one two three" four}
    84  } {AND {AND {PHRASE 3 0 zero} {PHRASE 3 0 one two three}} {PHRASE 3 0 four}}
    85  do_test fts3expr-1.8.2 {
    86    test_fts3expr {zero AND "one two three" four}
    87  } {AND {AND {PHRASE 3 0 zero} {PHRASE 3 0 one two three}} {PHRASE 3 0 four}}
    88  do_test fts3expr-1.8.3 {
    89    test_fts3expr {zero "one two three" AND four}
    90  } {AND {AND {PHRASE 3 0 zero} {PHRASE 3 0 one two three}} {PHRASE 3 0 four}}
    91  do_test fts3expr-1.8.4 {
    92    test_fts3expr {zero AND "one two three" AND four}
    93  } {AND {AND {PHRASE 3 0 zero} {PHRASE 3 0 one two three}} {PHRASE 3 0 four}}
    94  do_test fts3expr-1.9.1 {
    95    test_fts3expr {"one* two three"}
    96  } {PHRASE 3 0 one+ two three}
    97  do_test fts3expr-1.9.2 {
    98    test_fts3expr {"one two* three"}
    99  } {PHRASE 3 0 one two+ three}
   100  do_test fts3expr-1.9.3 {
   101    test_fts3expr {"one* two* three"}
   102  } {PHRASE 3 0 one+ two+ three}
   103  do_test fts3expr-1.9.4 {
   104    test_fts3expr {"one two three*"}
   105  } {PHRASE 3 0 one two three+}
   106  do_test fts3expr-1.9.5 {
   107    test_fts3expr {"one* two three*"}
   108  } {PHRASE 3 0 one+ two three+}
   109  do_test fts3expr-1.9.6 {
   110    test_fts3expr {"one two* three*"}
   111  } {PHRASE 3 0 one two+ three+}
   112  do_test fts3expr-1.9.7 {
   113    test_fts3expr {"one* two* three*"}
   114  } {PHRASE 3 0 one+ two+ three+}
   115  
   116  do_test fts3expr-1.10 {
   117    test_fts3expr {one* two}
   118  } {AND {PHRASE 3 0 one+} {PHRASE 3 0 two}}
   119  do_test fts3expr-1.11 {
   120    test_fts3expr {one two*}
   121  } {AND {PHRASE 3 0 one} {PHRASE 3 0 two+}}
   122  
   123  do_test fts3expr-1.14 {
   124    test_fts3expr {a:one two}
   125  } {AND {PHRASE 0 0 one} {PHRASE 3 0 two}}
   126  do_test fts3expr-1.15.1 {
   127    test_fts3expr {one b:two}
   128  } {AND {PHRASE 3 0 one} {PHRASE 1 0 two}}
   129  do_test fts3expr-1.15.2 {
   130    test_fts3expr {one B:two}
   131  } {AND {PHRASE 3 0 one} {PHRASE 1 0 two}}
   132  
   133  do_test fts3expr-1.16 {
   134    test_fts3expr {one AND two AND three AND four AND five}
   135  } [list AND \
   136          [list AND \
   137                [list AND \
   138                      [list AND {PHRASE 3 0 one} {PHRASE 3 0 two}] \
   139                      {PHRASE 3 0 three} \
   140                ] \
   141                {PHRASE 3 0 four} \
   142          ] \
   143          {PHRASE 3 0 five} \
   144    ]
   145  do_test fts3expr-1.17 {
   146    test_fts3expr {(one AND two) AND ((three AND four) AND five)}
   147  } [list AND \
   148          [list AND {PHRASE 3 0 one} {PHRASE 3 0 two}] \
   149          [list AND \
   150                [list AND {PHRASE 3 0 three} {PHRASE 3 0 four}] \
   151               {PHRASE 3 0 five} \
   152          ] \
   153    ]
   154  do_test fts3expr-1.18 {
   155    test_fts3expr {(one AND two) OR ((three AND four) AND five)}
   156  } [list OR \
   157          [list AND {PHRASE 3 0 one} {PHRASE 3 0 two}] \
   158          [list AND \
   159                [list AND {PHRASE 3 0 three} {PHRASE 3 0 four}] \
   160               {PHRASE 3 0 five} \
   161          ] \
   162    ]
   163  do_test fts3expr-1.19 {
   164    test_fts3expr {(one AND two) AND ((three AND four) OR five)}
   165  } [list AND \
   166          [list AND {PHRASE 3 0 one} {PHRASE 3 0 two}] \
   167          [list OR \
   168                [list AND {PHRASE 3 0 three} {PHRASE 3 0 four}] \
   169               {PHRASE 3 0 five} \
   170          ] \
   171    ]
   172  do_test fts3expr-1.20 {
   173    test_fts3expr {(one OR two) AND ((three OR four) AND five)}
   174  } [list AND \
   175          [list OR {PHRASE 3 0 one} {PHRASE 3 0 two}] \
   176          [list AND \
   177                [list OR {PHRASE 3 0 three} {PHRASE 3 0 four}] \
   178               {PHRASE 3 0 five} \
   179          ] \
   180    ]
   181  do_test fts3expr-1.21 {
   182    test_fts3expr {(one OR two) AND ((three NOT four) AND five)}
   183  } [list AND \
   184          [list OR {PHRASE 3 0 one} {PHRASE 3 0 two}] \
   185          [list AND \
   186                [list NOT {PHRASE 3 0 three} {PHRASE 3 0 four}] \
   187               {PHRASE 3 0 five} \
   188          ] \
   189    ]
   190  do_test fts3expr-1.22 {
   191    test_fts3expr {(one OR two) NOT ((three OR four) AND five)}
   192  } [list NOT \
   193          [list OR {PHRASE 3 0 one} {PHRASE 3 0 two}] \
   194          [list AND \
   195                [list OR {PHRASE 3 0 three} {PHRASE 3 0 four}] \
   196               {PHRASE 3 0 five} \
   197          ] \
   198    ]
   199  do_test fts3expr-1.23 {
   200    test_fts3expr {(((((one OR two))))) NOT (((((three OR four))) AND five))}
   201  } [list NOT \
   202          [list OR {PHRASE 3 0 one} {PHRASE 3 0 two}] \
   203          [list AND \
   204                [list OR {PHRASE 3 0 three} {PHRASE 3 0 four}] \
   205               {PHRASE 3 0 five} \
   206          ] \
   207    ]
   208  do_test fts3expr-1.24 {
   209    test_fts3expr {one NEAR two}
   210  } [list NEAR/10 {PHRASE 3 0 one} {PHRASE 3 0 two}]
   211  do_test fts3expr-1.25 {
   212    test_fts3expr {(one NEAR two)}
   213  } [list NEAR/10 {PHRASE 3 0 one} {PHRASE 3 0 two}]
   214  do_test fts3expr-1.26 {
   215    test_fts3expr {((((((one NEAR two))))))}
   216  } [list NEAR/10 {PHRASE 3 0 one} {PHRASE 3 0 two}]
   217  do_test fts3expr-1.27 {
   218    test_fts3expr {(one NEAR two) OR ((three OR four) AND five)}
   219  } [list OR \
   220          [list NEAR/10 {PHRASE 3 0 one} {PHRASE 3 0 two}] \
   221          [list AND \
   222                [list OR {PHRASE 3 0 three} {PHRASE 3 0 four}] \
   223               {PHRASE 3 0 five} \
   224          ] \
   225    ]
   226  do_test fts3expr-1.28 {
   227    test_fts3expr {(one NEAR/321 two) OR ((three OR four) AND five)}
   228  } [list OR \
   229          [list NEAR/321 {PHRASE 3 0 one} {PHRASE 3 0 two}] \
   230          [list AND \
   231                [list OR {PHRASE 3 0 three} {PHRASE 3 0 four}] \
   232               {PHRASE 3 0 five} \
   233          ] \
   234    ]
   235  
   236  proc strip_phrase_data {L} {
   237    if {[lindex $L 0] eq "PHRASE"} {
   238      return [lrange $L 3 end]
   239    }
   240    return [list \
   241      [lindex $L 0] \
   242      [strip_phrase_data [lindex $L 1]] \
   243      [strip_phrase_data [lindex $L 2]] \
   244    ]
   245  }
   246  proc test_fts3expr2 {expr} {
   247    strip_phrase_data [
   248      db one {SELECT fts3_exprtest('simple', $expr, 'a', 'b', 'c')}
   249    ]
   250  }
   251  do_test fts3expr-2.1 {
   252    test_fts3expr2 "ab OR cd AND ef"
   253  } {OR ab {AND cd ef}}
   254  do_test fts3expr-2.2 {
   255    test_fts3expr2 "cd AND ef OR ab"
   256  } {OR {AND cd ef} ab}
   257  do_test fts3expr-2.3 {
   258    test_fts3expr2 "ab AND cd AND ef OR gh"
   259  } {OR {AND {AND ab cd} ef} gh}
   260  do_test fts3expr-2.4 {
   261    test_fts3expr2 "ab AND cd OR ef AND gh"
   262  } {OR {AND ab cd} {AND ef gh}}
   263  do_test fts3expr-2.5 {
   264    test_fts3expr2 "ab cd"
   265  } {AND ab cd}
   266  
   267  do_test fts3expr-3.1 {
   268    test_fts3expr2 "(ab OR cd) AND ef"
   269  } {AND {OR ab cd} ef}
   270  do_test fts3expr-3.2 {
   271    test_fts3expr2 "ef AND (ab OR cd)"
   272  } {AND ef {OR ab cd}}
   273  do_test fts3expr-3.3 {
   274    test_fts3expr2 "(ab OR cd)"
   275  } {OR ab cd}
   276  do_test fts3expr-3.4 {
   277    test_fts3expr2 "(((ab OR cd)))"
   278  } {OR ab cd}
   279  
   280  do_test fts3expr-3.5 {
   281    test_fts3expr2 "one AND (two NEAR three)"
   282  } {AND one {NEAR/10 two three}}
   283  do_test fts3expr-3.6 {
   284    test_fts3expr2 "one (two NEAR three)"
   285  } {AND one {NEAR/10 two three}}
   286  do_test fts3expr-3.7 {
   287    test_fts3expr2 "(two NEAR three) one"
   288  } {AND {NEAR/10 two three} one}
   289  do_test fts3expr-3.8 {
   290    test_fts3expr2 "(two NEAR three) AND one"
   291  } {AND {NEAR/10 two three} one}
   292  do_test fts3expr-3.9 {
   293    test_fts3expr2 "(two NEAR three) (four five)"
   294  } {AND {NEAR/10 two three} {AND four five}}
   295  do_test fts3expr-3.10 {
   296    test_fts3expr2 "(two NEAR three) AND (four five)"
   297  } {AND {NEAR/10 two three} {AND four five}}
   298  do_test fts3expr-3.11 {
   299    test_fts3expr2 "(two NEAR three) (four NEAR five)"
   300  } {AND {NEAR/10 two three} {NEAR/10 four five}}
   301  do_test fts3expr-3.12 {
   302    test_fts3expr2 "(two NEAR three) OR (four NEAR five)"
   303  } {OR {NEAR/10 two three} {NEAR/10 four five}}
   304  
   305  do_test fts3expr-3.13 {
   306    test_fts3expr2 "(two NEAR/1a three)"
   307  } {AND {AND {AND two near} 1a} three}
   308  
   309  do_test fts3expr-3.14 {
   310    test_fts3expr2 "(two NEAR// three)"
   311  } {AND {AND two near} three}
   312  do_test fts3expr-3.15 {
   313    test_fts3expr2 "(two NEAR/: three)"
   314  } {AND {AND two near} three}
   315  
   316  do_test fts3expr-3.16 {
   317    test_fts3expr2 "(two NEAR three)OR(four NEAR five)"
   318  } {OR {NEAR/10 two three} {NEAR/10 four five}}
   319  do_test fts3expr-3.17 {
   320    test_fts3expr2 "(two NEAR three)OR\"four five\""
   321  } {OR {NEAR/10 two three} {four five}}
   322  do_test fts3expr-3.18 {
   323    test_fts3expr2 "one \u0080wo"
   324  } "AND one \u0080wo"
   325  
   326  
   327  
   328  #------------------------------------------------------------------------
   329  # The following tests, fts3expr-4.*, test the parsers response to syntax
   330  # errors in query expressions. This is done using a real fts3 table and
   331  # MATCH clauses, not the parser test interface.
   332  # 
   333  do_test fts3expr-4.1 {
   334    execsql { CREATE VIRTUAL TABLE t1 USING fts3(a, b, c) }
   335  } {}
   336  
   337  # Mismatched parenthesis:
   338  do_test fts3expr-4.2.1 {
   339    catchsql { SELECT * FROM t1 WHERE t1 MATCH 'example AND (hello OR world))' }
   340  } {1 {malformed MATCH expression: [example AND (hello OR world))]}}
   341  do_test fts3expr-4.2.2 {
   342    catchsql { SELECT * FROM t1 WHERE t1 MATCH 'example AND (hello OR world' }
   343  } {1 {malformed MATCH expression: [example AND (hello OR world]}}
   344  do_test fts3expr-4.2.3 {
   345    catchsql { SELECT * FROM t1 WHERE t1 MATCH '(hello' }
   346  } {1 {malformed MATCH expression: [(hello]}}
   347  do_test fts3expr-4.2.4 {
   348    catchsql { SELECT * FROM t1 WHERE t1 MATCH '(' }
   349  } {1 {malformed MATCH expression: [(]}}
   350  do_test fts3expr-4.2.5 {
   351    catchsql { SELECT * FROM t1 WHERE t1 MATCH ')' }
   352  } {1 {malformed MATCH expression: [)]}}
   353  
   354  do_test fts3expr-4.2.6 {
   355    catchsql { SELECT * FROM t1 WHERE t1 MATCH 'example (hello world' }
   356  } {1 {malformed MATCH expression: [example (hello world]}}
   357  
   358  # Unterminated quotation marks:
   359  do_test fts3expr-4.3.1 {
   360    catchsql { SELECT * FROM t1 WHERE t1 MATCH 'example OR "hello world' }
   361  } {1 {malformed MATCH expression: [example OR "hello world]}}
   362  do_test fts3expr-4.3.2 {
   363    catchsql { SELECT * FROM t1 WHERE t1 MATCH 'example OR hello world"' }
   364  } {1 {malformed MATCH expression: [example OR hello world"]}}
   365  
   366  # Binary operators without the required operands.
   367  do_test fts3expr-4.4.1 {
   368    catchsql { SELECT * FROM t1 WHERE t1 MATCH 'OR hello world' }
   369  } {1 {malformed MATCH expression: [OR hello world]}}
   370  do_test fts3expr-4.4.2 {
   371    catchsql { SELECT * FROM t1 WHERE t1 MATCH 'hello world OR' }
   372  } {1 {malformed MATCH expression: [hello world OR]}}
   373  do_test fts3expr-4.4.3 {
   374    catchsql { SELECT * FROM t1 WHERE t1 MATCH 'one (hello world OR) two' }
   375  } {1 {malformed MATCH expression: [one (hello world OR) two]}}
   376  do_test fts3expr-4.4.4 {
   377    catchsql { SELECT * FROM t1 WHERE t1 MATCH 'one (OR hello world) two' }
   378  } {1 {malformed MATCH expression: [one (OR hello world) two]}}
   379  
   380  # NEAR operators with something other than phrases as arguments.
   381  do_test fts3expr-4.5.1 {
   382    catchsql { SELECT * FROM t1 WHERE t1 MATCH '(hello OR world) NEAR one' }
   383  } {1 {malformed MATCH expression: [(hello OR world) NEAR one]}}
   384  do_test fts3expr-4.5.2 {
   385    catchsql { SELECT * FROM t1 WHERE t1 MATCH 'one NEAR (hello OR world)' }
   386  } {1 {malformed MATCH expression: [one NEAR (hello OR world)]}}
   387  
   388  #------------------------------------------------------------------------
   389  # The following OOM tests are designed to cover cases in fts3_expr.c.
   390  # 
   391  source $testdir/malloc_common.tcl
   392  do_malloc_test fts3expr-malloc-1 -sqlbody {
   393    SELECT fts3_exprtest('simple', 'a b c "d e f"', 'a', 'b', 'c')
   394  }
   395  do_malloc_test fts3expr-malloc-2 -tclprep {
   396    set sqlite_fts3_enable_parentheses 0
   397  } -sqlbody {
   398    SELECT fts3_exprtest('simple', 'a -b', 'a', 'b', 'c')
   399  } -cleanup {
   400    set sqlite_fts3_enable_parentheses 1
   401  }
   402  
   403  #------------------------------------------------------------------------
   404  # The following tests are not very important. They cover error handling
   405  # cases in the test code, which makes test coverage easier to measure.
   406  # 
   407  do_test fts3expr-5.1 {
   408    catchsql { SELECT fts3_exprtest('simple', 'a b') }
   409  } {1 {Usage: fts3_exprtest(tokenizer, expr, col1, ...}}
   410  do_test fts3expr-5.2 {
   411    catchsql { SELECT fts3_exprtest('doesnotexist', 'a b', 'c') }
   412  } {1 {unknown tokenizer: doesnotexist}}
   413  do_test fts3expr-5.3 {
   414    catchsql { SELECT fts3_exprtest('simple', 'a b OR', 'c') }
   415  } {1 {Error parsing expression}}
   416  
   417  #------------------------------------------------------------------------
   418  # The next set of tests verifies that things actually work as they are
   419  # supposed to when using the new syntax.
   420  # 
   421  do_test fts3expr-6.1 {
   422    execsql {
   423      CREATE VIRTUAL TABLE t1 USING fts3(a);
   424    }
   425    for {set ii 1} {$ii < 32} {incr ii} {
   426      set v [list]
   427      if {$ii & 1}  { lappend v one }
   428      if {$ii & 2}  { lappend v two }
   429      if {$ii & 4}  { lappend v three }
   430      if {$ii & 8}  { lappend v four }
   431      if {$ii & 16} { lappend v five }
   432      execsql { INSERT INTO t1 VALUES($v) }
   433    }
   434  
   435    execsql {SELECT rowid FROM t1 WHERE t1 MATCH 'five four one' ORDER BY rowid}
   436  } {25 27 29 31}
   437  
   438  foreach {id expr res} {
   439  
   440    2 "five four NOT one" {24 26 28 30}
   441  
   442    3 "five AND four OR one" 
   443        {1 3 5 7 9 11 13 15 17 19 21 23 24 25 26 27 28 29 30 31}
   444  
   445    4 "five AND (four OR one)" {17 19 21 23 24 25 26 27 28 29 30 31}
   446  
   447    5 "five NOT (four OR one)" {16 18 20 22}
   448  
   449    6 "(five NOT (four OR one)) OR (five AND (four OR one))"
   450        {16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31}
   451  
   452    7 "(five OR one) AND two AND three" {7 15 22 23 30 31}
   453  
   454    8 "five OR one AND two AND three" 
   455      {7 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31}
   456  
   457    9 "five OR one two three" 
   458      {7 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31}
   459  
   460    10 "five OR \"one two three\"" 
   461      {7 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31}
   462  
   463    11 "one two OR four five NOT three" {3 7 11 15 19 23 24 25 26 27 31}
   464  
   465    12 "(one two OR four five) NOT three" {3 11 19 24 25 26 27}
   466  
   467    13 "((((((one two OR four five)))))) NOT three" {3 11 19 24 25 26 27}
   468  
   469  } {
   470    do_test fts3expr-6.1.$id {
   471      execsql { SELECT rowid FROM t1 WHERE t1 MATCH $expr ORDER BY rowid }
   472    } $res
   473  }
   474  
   475  set sqlite_fts3_enable_parentheses 0
   476  foreach {id expr res} {
   477    1 "one -two three"  {5 13 21 29}
   478    2 "-two one three"  {5 13 21 29}
   479    3 "one three -two"  {5 13 21 29}
   480    4 "-one -two three" {4 12 20 28}
   481    5 "three -one -two" {4 12 20 28}
   482    6 "-one three -two" {4 12 20 28}
   483  } {
   484    do_test fts3expr-6.2.$id {
   485      execsql { SELECT rowid FROM t1 WHERE t1 MATCH $expr ORDER BY rowid }
   486    } $res
   487  }
   488  set sqlite_fts3_enable_parentheses 1
   489  
   490  do_test fts3expr-7.1 {
   491    execsql {
   492      CREATE VIRTUAL TABLE test USING fts3 (keyword);
   493      INSERT INTO test VALUES ('abc');
   494      SELECT * FROM test WHERE keyword MATCH '""';
   495    }
   496  } {}
   497  
   498  
   499  do_test fts3expr-8.0 { test_fts3expr "(blah)" } {PHRASE 3 0 blah}
   500  do_test fts3expr-8.1 { test_fts3expr "(blah.)" } {PHRASE 3 0 blah}
   501  do_test fts3expr-8.2 { test_fts3expr "(blah,)" } {PHRASE 3 0 blah}
   502  do_test fts3expr-8.3 { test_fts3expr "(blah!)" } {PHRASE 3 0 blah}
   503  do_test fts3expr-8.4 { test_fts3expr "(blah-)" } {PHRASE 3 0 blah}
   504  
   505  do_test fts3expr-8.5 { test_fts3expr "((blah.))" } {PHRASE 3 0 blah}
   506  do_test fts3expr-8.6 { test_fts3expr "(((blah,)))" } {PHRASE 3 0 blah}
   507  do_test fts3expr-8.7 { test_fts3expr "((((blah!))))" } {PHRASE 3 0 blah}
   508  
   509  do_test fts3expr-8.8 { test_fts3expr "(,(blah-),)" } {PHRASE 3 0 blah}
   510  
   511  set sqlite_fts3_enable_parentheses 0
   512  
   513  do_test fts3expr-9.1 {
   514    test_fts3expr "f (e NEAR/2 a)"
   515  } {AND {PHRASE 3 0 f} {NEAR/2 {PHRASE 3 0 e} {PHRASE 3 0 a}}}
   516  
   517  do_test fts3expr-10.1 { test_fts3expr "abc *" } {PHRASE 3 0 abc}
   518  do_test fts3expr-10.2 { test_fts3expr "*" } {}
   519  do_test fts3expr-10.3 { test_fts3expr "abc*" } {PHRASE 3 0 abc+}
   520  
   521  finish_test