sqlite/test/fts4content.test

# 2011 October 03
#
# 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.
#
#*************************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is testing the content=xxx FTS4 option.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set ::testprefix fts4content

# If SQLITE_ENABLE_FTS3 is defined, omit this file.
ifcapable !fts3 {
  finish_test
  return
}

#-------------------------------------------------------------------------
# Test organization:
#   
#   1.* - Warm-body tests.
#
#   2.* - Querying a content=xxx FTS table.
#
#   3.* - Writing to a content=xxx FTS table.
#
#   4.* - The "INSERT INTO fts(fts) VALUES('rebuild')" command.
#
#   5.* - Check that CREATE TABLE, DROP TABLE and ALTER TABLE correctly
#         ignore any %_content table when used with the content=xxx option.
#
#   6.* - Test the effects of messing with the schema of table xxx after
#         creating a content=xxx FTS index.
#   
#   7.* - Test that if content=xxx is specified and table xxx does not
#         exist, the FTS table can still be used for INSERT and some
#         SELECT statements.
#
#   8.* - Test that if the content=xxx and prefix options are used together,
#         the 'rebuild' command still works.
#
#   9.* - Test using content=xxx where xxx is a virtual table.
#

do_execsql_test 1.1.1 {
  CREATE TABLE t1(a, b, c);
  INSERT INTO t1 VALUES('w x', 'x y', 'y z');
  CREATE VIRTUAL TABLE ft1 USING fts4(content=t1);
}

do_execsql_test 1.1.2 {
  PRAGMA table_info(ft1);
} {
  0 a {} 0 {} 0 
  1 b {} 0 {} 0 
  2 c {} 0 {} 0
}

do_execsql_test 1.1.3 { SELECT *, rowid FROM ft1 } {{w x} {x y} {y z} 1}
do_execsql_test 1.1.4 { SELECT a, c FROM ft1 WHERE rowid=1 } {{w x} {y z}}

do_execsql_test 1.1.5 { INSERT INTO ft1(ft1) VALUES('rebuild') } {}
do_execsql_test 1.1.6 { SELECT rowid FROM ft1 WHERE ft1 MATCH 'x' } {1}
do_execsql_test 1.1.7 { SELECT rowid FROM ft1 WHERE ft1 MATCH 'a' } {}

do_execsql_test 1.2.1 {
  DROP TABLE ft1;
  CREATE VIRTUAL TABLE ft1 USING fts4(content=t1, b);
  PRAGMA table_info(ft1);
} {
  0 b {} 0 {} 0 
}
do_execsql_test 1.2.2 { 
  SELECT *, rowid FROM ft1 
} {{x y} 1}

#-------------------------------------------------------------------------
# The following block of tests - 2.* - test that a content=xxx FTS table
# can be queried. Also tested are cases where rows identified in the FTS
# are missing from the content table, and cases where the index is 
# inconsistent with the content table.
# 
do_execsql_test 2.0 {
  CREATE TABLE t2(x);
  INSERT INTO t2 VALUES('O S W W F U C R Q I C N P Z Y Y E Y Y E');  -- 1
  INSERT INTO t2 VALUES('Y X U V L B E H Y J C Y A I A P V F V K');  -- 2
  INSERT INTO t2 VALUES('P W I N J H I I N I F B K D U Q B Z S F');  -- 3
  INSERT INTO t2 VALUES('N R O R H J R H G M D I U U B O M P A U');  -- 4
  INSERT INTO t2 VALUES('Y O V O G T P N G T N F I V B U M J M G');  -- 5
  INSERT INTO t2 VALUES('J O B N K N E C H Z R K J O U G M K L S');  -- 6
  INSERT INTO t2 VALUES('S Z S R I Q U A P W R X H K C Z U L S P');  -- 7
  INSERT INTO t2 VALUES('J C H N R C K R V N M O F Z M Z A I H W');  -- 8
  INSERT INTO t2 VALUES('O Y G I S J U U W O D Z F J K N R P R L');  -- 9
  INSERT INTO t2 VALUES('B G L K U R U P V X Z I H V R W C Q A S');  -- 10
  INSERT INTO t2 VALUES('T F T J F F Y V F W N X K Q A Y L X W G');  -- 11
  INSERT INTO t2 VALUES('C J U H B Q X L C M M Y E G V F W V Z C');  -- 12
  INSERT INTO t2 VALUES('B W L T F S G X D P H N G M R I O A X I');  -- 13
  INSERT INTO t2 VALUES('N G Y O K Q K Z N M H U J E D H U W R K');  -- 14
  INSERT INTO t2 VALUES('U D T R U Y F J D S J X E H Q G V A S Z');  -- 15
  INSERT INTO t2 VALUES('M I W P J S H R J D Q I C G P C T P H R');  -- 16
  INSERT INTO t2 VALUES('J M N I S L X Q C A B F C B Y D H V R J');  -- 17
  INSERT INTO t2 VALUES('F V Z W J Q L P X Y E W B U Q N H X K T');  -- 18
  INSERT INTO t2 VALUES('R F S R Y O F Q E I E G H C B H R X Y N');  -- 19
  INSERT INTO t2 VALUES('U Q Q Q T E P D M F X P J G H X C Q D L');  -- 20
}

do_execsql_test 2.1 {
  CREATE VIRTUAL TABLE ft2 USING fts4(content=t2);
  INSERT INTO ft2(ft2) VALUES('rebuild');

  -- Modify the backing table a bit: Row 17 is missing and the contents 
  -- of row 20 do not match the FTS index contents. 
  DELETE FROM t2 WHERE rowid = 17;
  UPDATE t2 SET x = 'a b c d e f g h i j' WHERE rowid = 20;
}

foreach {tn match rowidlist} {
  1   {S}        {1 3 6 7 9 10 13 15 16 17 19}
  2   {"S R"}    {7 19}
  3   {"N K N"}  {6}
  4   {"Q Q"}    {20}
  5   {"B Y D"}  {17}
} {
  do_execsql_test 2.2.1.$tn {
    SELECT rowid FROM ft2 WHERE ft2 MATCH $match
  } $rowidlist

  do_execsql_test 2.2.2.$tn {
    SELECT docid FROM ft2 WHERE ft2 MATCH $match
  } $rowidlist
}

foreach {tn match result} {
  1   {"N K N"}  {{J O B N K N E C H Z R K J O U G M K L S}}
  2   {"Q Q"}    {{a b c d e f g h i j}}
  3   {"B Y D"}  {{}}
} {
  do_execsql_test 2.3.$tn {
    SELECT * FROM ft2 WHERE ft2 MATCH $match
  } $result
}

foreach {tn match result} {
  1   {"N K N"}  {{..O B [N] [K] [N] E..}}
  2   {"B Y D"}  {{}}
  3   {"Q Q"}    {{a [b] [c] [d] e f..}}
} {
  do_execsql_test 2.4.$tn {
    SELECT snippet(ft2, '[', ']', '..', -1, 6) FROM ft2 WHERE ft2 MATCH $match
  } $result
}

foreach {tn match result} {
  1   {"N K N"}  {{0 0 6 1 0 1 8 1 0 2 10 1}}
  2   {"B Y D"}  {{}}
  3   {"Q Q"}    {{0 0 2 1 0 0 4 1 0 1 4 1 0 1 6 1}}
  4   {"Q D L"}  {{}}
} {
  do_execsql_test 2.5.$tn {
    SELECT offsets(ft2) FROM ft2 WHERE ft2 MATCH $match
  } $result
}

#-------------------------------------------------------------------------
# The following block of tests - 3.* - test that the FTS index can be
# modified by writing to the table. But that this has no effect on the 
# content table.
# 

do_execsql_test 3.1 {
  CREATE TABLE t3(x, y);
  CREATE VIRTUAL TABLE ft3 USING fts4(content=t3);
}

do_catchsql_test 3.1.1 {
  INSERT INTO ft3 VALUES('a b c', 'd e f');
} {1 {constraint failed}}
do_execsql_test 3.1.2 {
  INSERT INTO ft3(docid, x, y) VALUES(21, 'a b c', 'd e f');
  SELECT rowid FROM ft3 WHERE ft3 MATCH '"a b c"';
} {21}
do_execsql_test 3.1.3 { SELECT * FROM t3 } {}

# This DELETE does not work, since there is no row in [t3] to base the
# DELETE on. So the SELECT on [ft3] still returns rowid 21.
do_execsql_test 3.1.4 { 
  DELETE FROM ft3;
  SELECT rowid FROM ft3 WHERE ft3 MATCH '"a b c"';
} {21}

# If the row is added to [t3] before the DELETE on [ft3], it works.
do_execsql_test 3.1.5 {
  INSERT INTO t3(rowid, x, y) VALUES(21, 'a b c', 'd e f');
  DELETE FROM ft3;
  SELECT rowid FROM ft3 WHERE ft3 MATCH '"a b c"';
} {}
do_execsql_test 3.1.6 { SELECT rowid FROM t3 } {21}

do_execsql_test 3.2.1 {
  INSERT INTO ft3(rowid, x, y) VALUES(0, 'R T M S M', 'A F O K H');
  INSERT INTO ft3(rowid, x, y) VALUES(1, 'C Z J O X', 'U S Q D K');
  INSERT INTO ft3(rowid, x, y) VALUES(2, 'N G H P O', 'N O P O C');
  INSERT INTO ft3(rowid, x, y) VALUES(3, 'V H S D R', 'K N G E C');
  INSERT INTO ft3(rowid, x, y) VALUES(4, 'J T R V U', 'U X S L C');
  INSERT INTO ft3(rowid, x, y) VALUES(5, 'N A Y N G', 'X D G P Y');
  INSERT INTO ft3(rowid, x, y) VALUES(6, 'I Q I S P', 'D R O Q B');
  INSERT INTO ft3(rowid, x, y) VALUES(7, 'T K T Z J', 'B W D G O');
  INSERT INTO ft3(rowid, x, y) VALUES(8, 'Y K F X T', 'D F G V G');
  INSERT INTO ft3(rowid, x, y) VALUES(9, 'E L E T L', 'P W N F Z');
  INSERT INTO ft3(rowid, x, y) VALUES(10, 'O G J G X', 'G J F E P');
  INSERT INTO ft3(rowid, x, y) VALUES(11, 'O L N N Z', 'K E Z F D');
  INSERT INTO ft3(rowid, x, y) VALUES(12, 'R Z M R J', 'X G I M Z');
  INSERT INTO ft3(rowid, x, y) VALUES(13, 'L X N N X', 'R R N S T');
  INSERT INTO ft3(rowid, x, y) VALUES(14, 'F L B J H', 'K W F L C');
  INSERT INTO ft3(rowid, x, y) VALUES(15, 'P E B M V', 'E A A B U');
  INSERT INTO ft3(rowid, x, y) VALUES(16, 'V E C F P', 'L U T V K');
  INSERT INTO ft3(rowid, x, y) VALUES(17, 'T N O Z N', 'T P Q X N');
  INSERT INTO ft3(rowid, x, y) VALUES(18, 'V W U W R', 'H O A A V');
  INSERT INTO ft3(rowid, x, y) VALUES(19, 'A H N L F', 'I G H B O');
}

foreach {tn match rowidlist} {
  1   "N A"    {5 19}
  2   "x:O"    {1 2 10 11 17}
  3   "y:O"    {0 2 6 7 18 19}
} {
  set res [list]
  foreach rowid $rowidlist { lappend res $rowid {} {} }

  do_execsql_test 3.2.2.$tn {
    SELECT rowid, * FROM ft3 WHERE ft3 MATCH $match
  } $res
  do_execsql_test 3.2.3.$tn {
    SELECT docid, * FROM ft3 WHERE ft3 MATCH $match
  } $res
}

do_execsql_test 3.3.1 {
  INSERT INTO t3(rowid, x, y) VALUES(0, 'R T M S M', 'A F O K H');
  INSERT INTO t3(rowid, x, y) VALUES(1, 'C Z J O X', 'U S Q D K');
  INSERT INTO t3(rowid, x, y) VALUES(2, 'N G H P O', 'N O P O C');
  INSERT INTO t3(rowid, x, y) VALUES(3, 'V H S D R', 'K N G E C');
  INSERT INTO t3(rowid, x, y) VALUES(4, 'J T R V U', 'U X S L C');
  INSERT INTO t3(rowid, x, y) VALUES(5, 'N A Y N G', 'X D G P Y');
  UPDATE ft3 SET x = y, y = x;
  DELETE FROM t3;
}

foreach {tn match rowidlist} {
  1   "N A"    {5 19}
  2   "x:O"    {0 2 10 11 17}
  3   "y:O"    {1 2 6 7 18 19}
} {
  set res [list]
  foreach rowid $rowidlist { lappend res $rowid {} {} }

  do_execsql_test 3.3.2.$tn {
    SELECT rowid, * FROM ft3 WHERE ft3 MATCH $match
  } $res
  do_execsql_test 3.3.3.$tn {
    SELECT docid, * FROM ft3 WHERE ft3 MATCH $match
  } $res
}

do_execsql_test 3.3.1 {
  INSERT INTO t3(rowid, x, y) VALUES(15, 'P E B M V', 'E A A B U');
  INSERT INTO t3(rowid, x, y) VALUES(16, 'V E C F P', 'L U T V K');
  INSERT INTO t3(rowid, x, y) VALUES(17, 'T N O Z N', 'T P Q X N');
  INSERT INTO t3(rowid, x, y) VALUES(18, 'V W U W R', 'H O A A V');
  INSERT INTO t3(rowid, x, y) VALUES(19, 'A H N L F', 'I G H B O');
  DELETE FROM ft3;
}

foreach {tn match rowidlist} {
  1   "N A"    {5}
  2   "x:O"    {0 2 10 11}
  3   "y:O"    {1 2 6 7}
} {
  set res [list]
  foreach rowid $rowidlist { lappend res $rowid {} {} }

  do_execsql_test 3.3.2.$tn {
    SELECT rowid, * FROM ft3 WHERE ft3 MATCH $match
  } $res
  do_execsql_test 3.3.3.$tn {
    SELECT docid, * FROM ft3 WHERE ft3 MATCH $match
  } $res
}


#-------------------------------------------------------------------------
# Test cases 4.* test the 'rebuild' command. On content=xxx and regular
# FTS tables.
# 
do_execsql_test 4.0 {
  CREATE TABLE t4(x);
  CREATE VIRTUAL TABLE ft4 USING fts4(content=t4);
  CREATE VIRTUAL TABLE ft4x USING fts4(x);
}

do_execsql_test 4.1.1 {
  INSERT INTO ft4x(ft4x) VALUES('rebuild');
  INSERT INTO ft4(ft4) VALUES('rebuild');
} {}
do_execsql_test 4.1.2 {
  SELECT id, quote(value) FROM ft4_stat
} {0 X'000000'}
do_execsql_test 4.1.3 {
  SELECT id, quote(value) FROM ft4x_stat
} {0 X'000000'}

do_execsql_test 4.2.1 {
  INSERT INTO ft4x VALUES('M G M F T');
  INSERT INTO ft4x VALUES('Z Q C A U');
  INSERT INTO ft4x VALUES('N L L V');
  INSERT INTO ft4x VALUES('T F D X D');
  INSERT INTO ft4x VALUES('Z H I S D');

  SELECT id, quote(value) FROM ft4x_stat
} {0 X'05182B'}

do_execsql_test 4.2.2 {
  INSERT INTO ft4(rowid, x) SELECT rowid, * FROM ft4x;
  SELECT id, quote(value) FROM ft4_stat
} {0 X'05182B'}

do_execsql_test 4.2.3 {
  SELECT docid, quote(size) FROM ft4_docsize
} {1 X'05' 2 X'05' 3 X'04' 4 X'05' 5 X'05'}

do_execsql_test 4.2.4 {
  INSERT INTO ft4x(ft4x) VALUES('rebuild');
  SELECT id, quote(value) FROM ft4x_stat;
  SELECT docid, quote(size) FROM ft4x_docsize
} {0 X'05182B' 1 X'05' 2 X'05' 3 X'04' 4 X'05' 5 X'05'}

do_execsql_test 4.2.5 {
  INSERT INTO ft4(ft4) VALUES('rebuild');
  SELECT id, quote(value) FROM ft4_stat;
  SELECT docid, quote(size) FROM ft4_docsize
} {0 X'000000'}

do_execsql_test 4.2.6 {
  INSERT INTO t4(rowid, x) SELECT rowid, x FROM ft4x;
  INSERT INTO ft4(ft4) VALUES('rebuild');
  SELECT id, quote(value) FROM ft4_stat;
  SELECT docid, quote(size) FROM ft4_docsize
} {0 X'05182B' 1 X'05' 2 X'05' 3 X'04' 4 X'05' 5 X'05'}


#-------------------------------------------------------------------------
# Test cases 5.* test that the following commands do not create/move or
# delete a %_content table when used with a content=xxx FTS table.
# 
do_execsql_test 5.1.1 {
  CREATE TABLE t5(a, b, c, d);
  CREATE VIRTUAL TABLE ft5 USING fts4(content=t5);
  SELECT name FROM sqlite_master WHERE name LIKE '%t5%';
} {
  t5 ft5 ft5_segments ft5_segdir 
  sqlite_autoindex_ft5_segdir_1 ft5_docsize ft5_stat
}
do_execsql_test 5.1.2 {
  ALTER TABLE ft5 RENAME TO ft6;
  SELECT name FROM sqlite_master WHERE name LIKE '%t5%';
} {
  t5
}
do_execsql_test 5.1.3 {
  SELECT name FROM sqlite_master WHERE name LIKE '%t6%';
} {
  ft6 ft6_segments ft6_segdir 
  sqlite_autoindex_ft6_segdir_1 ft6_docsize ft6_stat
}
do_execsql_test 5.1.4 {
  INSERT INTO t5 VALUES('a', 'b', 'c', 'd');
  INSERT INTO ft6(ft6) VALUES('rebuild');
  SELECT rowid FROM ft6 WHERE ft6 MATCH 'b';
} {1}
do_execsql_test 5.1.5 {
  DROP TABLE ft6;
  SELECT * FROM t5;
} {a b c d}
do_execsql_test 5.1.6 {
  SELECT name FROM sqlite_master WHERE name LIKE '%t6%';
} {
}
do_execsql_test 5.1.7 {
  CREATE VIRTUAL TABLE ft5 USING fts4(content=t5);
  CREATE TABLE t5_content(a, b);
  DROP TABLE ft5;
  SELECT name FROM sqlite_master WHERE name LIKE '%t5%';
} {
  t5 t5_content
}

#-------------------------------------------------------------------------
# Test cases 6.* test 
# 
do_catchsql_test 6.1.1 {
  CREATE VIRTUAL TABLE ft7 USING fts4(content=t7);
} {1 {vtable constructor failed: ft7}}

do_execsql_test 6.2.1 {
  CREATE TABLE t7(one, two);
  CREATE VIRTUAL TABLE ft7 USING fts4(content=t7);
  INSERT INTO t7 VALUES('A B', 'B A');
  INSERT INTO t7 VALUES('C D', 'A A');
  SELECT * FROM ft7;
} {
  {A B} {B A} {C D} {A A}
}

do_catchsql_test 6.2.2 {
  DROP TABLE t7;
  SELECT * FROM ft7;
} {1 {SQL logic error or missing database}}

db close
sqlite3 db test.db
do_execsql_test 6.2.3 {
  SELECT name FROM sqlite_master WHERE name LIKE '%t7%'
} {
  ft7 ft7_segments ft7_segdir sqlite_autoindex_ft7_segdir_1 
  ft7_docsize ft7_stat
}
do_catchsql_test 6.2.4 {
  SELECT * FROM ft7;
} {1 {vtable constructor failed: ft7}}
do_execsql_test 6.2.5 {
  CREATE TABLE t7(x, y);
  INSERT INTO t7 VALUES('A B', 'B A');
  INSERT INTO t7 VALUES('C D', 'A A');
  SELECT * FROM ft7;
} {
  {A B} {B A} {C D} {A A}
}

do_execsql_test 6.2.6 {
  INSERT INTO ft7(ft7) VALUES('rebuild');
  SELECT rowid FROM ft7 WHERE ft7 MATCH '"A A"';
} {2}

do_execsql_test 6.2.7 {
  DROP TABLE t7;
  CREATE TABLE t7(x);
}
do_catchsql_test 6.2.8 {
  SELECT * FROM ft7 WHERE ft7 MATCH '"A A"';
} {1 {SQL logic error or missing database}}
do_catchsql_test 6.2.9 {
  SELECT * FROM ft7 WHERE ft7 MATCH '"A A"';
} {1 {SQL logic error or missing database}}

db close
sqlite3 db test.db
do_catchsql_test 6.2.10 {
  SELECT rowid FROM ft7 WHERE ft7 MATCH '"A A"';
} {0 2}
do_catchsql_test 6.2.11 {
  SELECT rowid, * FROM ft7 WHERE ft7 MATCH '"A A"';
} {0 {2 {}}}

#-------------------------------------------------------------------------
# Test cases 7.*
# 
do_execsql_test 7.1.1 {
  CREATE VIRTUAL TABLE ft8 USING fts4(content=nosuchtable, x);
  INSERT INTO ft8(docid, x) VALUES(13, 'U O N X G');
  INSERT INTO ft8(docid, x) VALUES(14, 'C J J U B');
  INSERT INTO ft8(docid, x) VALUES(15, 'N J Y G X');
  INSERT INTO ft8(docid, x) VALUES(16, 'R Y D O R');
  INSERT INTO ft8(docid, x) VALUES(17, 'I Y T Q O');
}

do_execsql_test 7.1.2 {
  SELECT docid FROM ft8 WHERE ft8 MATCH 'N';
} {13 15}

do_execsql_test 7.2.1 {
  CREATE VIRTUAL TABLE ft9 USING fts4(content=, x);
  INSERT INTO ft9(docid, x) VALUES(13, 'U O N X G');
  INSERT INTO ft9(docid, x) VALUES(14, 'C J J U B');
  INSERT INTO ft9(docid, x) VALUES(15, 'N J Y G X');
  INSERT INTO ft9(docid, x) VALUES(16, 'R Y D O R');
  INSERT INTO ft9(docid, x) VALUES(17, 'I Y T Q O');
}
do_execsql_test 7.2.2 {
  SELECT docid FROM ft9 WHERE ft9 MATCH 'N';
} {13 15}
do_execsql_test 7.2.3 {
  SELECT name FROM sqlite_master WHERE name LIKE 'ft9_%';
} {ft9_segments ft9_segdir ft9_docsize ft9_stat}

do_catchsql_test 7.2.4 {
  SELECT * FROM ft9 WHERE ft9 MATCH 'N';
} {1 {SQL logic error or missing database}}

#-------------------------------------------------------------------------
# Test cases 8.*
# 
do_execsql_test 8.1 {
  CREATE TABLE t10(a, b);
  INSERT INTO t10 VALUES(
      'abasia abasic abask', 'Abassin abastardize abatable');
  INSERT INTO t10 VALUES(
      'abate abatement abater', 'abatis abatised abaton');
  INSERT INTO t10 VALUES(
      'abator abattoir Abatua', 'abature abave abaxial');

  CREATE VIRTUAL TABLE ft10 USING fts4(content=t10, prefix="2,4", a, b);
}

do_execsql_test 8.2 { SELECT * FROM ft10 WHERE a MATCH 'ab*';          }
do_execsql_test 8.3 { INSERT INTO ft10(ft10) VALUES('rebuild');        }
do_execsql_test 8.4 { SELECT rowid FROM ft10 WHERE a MATCH 'ab*';      } {1 2 3}
do_execsql_test 8.5 { SELECT rowid FROM ft10 WHERE b MATCH 'abav*';    } {3}
do_execsql_test 8.6 { SELECT rowid FROM ft10 WHERE ft10 MATCH 'abas*'; } {1}

#-------------------------------------------------------------------------
# Test cases 9.*
# 
reset_db
register_echo_module [sqlite3_connection_pointer db]

do_execsql_test 9.1 {
  CREATE TABLE tbl1(a, b);
  INSERT INTO tbl1 VALUES('a b', 'c d');
  INSERT INTO tbl1 VALUES('e f', 'a b');
  CREATE VIRTUAL TABLE e1 USING echo(tbl1);
  CREATE VIRTUAL TABLE ft1 USING fts4(content=e1);
  INSERT INTO ft1(ft1) VALUES('rebuild');
}

do_execsql_test 9.2 {
  SELECT rowid, * FROM ft1 WHERE ft1 MATCH 'e'
} {2 {e f} {a b}}

do_execsql_test 9.3 {
  SELECT rowid, * FROM ft1 WHERE ft1 MATCH 'a'
} {1 {a b} {c d} 2 {e f} {a b}}

do_execsql_test 9.4 { 
  DELETE FROM ft1 WHERE docid=1;
}

do_execsql_test 9.5 {
  SELECT rowid, * FROM ft1 WHERE ft1 MATCH 'a'
} {2 {e f} {a b}}

do_execsql_test 9.6 {
  INSERT INTO ft1(ft1) VALUES('rebuild');
  SELECT rowid, * FROM ft1 WHERE ft1 MATCH 'a'
} {1 {a b} {c d} 2 {e f} {a b}}


#-------------------------------------------------------------------------
# Test cases 10.*
# 
reset_db
register_fs_module [sqlite3_connection_pointer db]

proc write_file {path text} {
  set fd [open $path w]
  puts -nonewline $fd $text
  close $fd
}

write_file t1.txt {a b c d e f g h i j k l m n o p q r s t u v w x y z}
write_file t2.txt {a b c d e f g h i j k l m a b c d e f g h i j k l m}
write_file t3.txt {n o p q r s t u v w x y z n o p q r s t u v w x y z}

do_execsql_test 10.1 {
  CREATE TABLE idx(id INTEGER PRIMARY KEY, path TEXT);
  INSERT INTO idx VALUES (1, 't1.txt');
  INSERT INTO idx VALUES (2, 't2.txt');
  INSERT INTO idx VALUES (3, 't3.txt');

  CREATE VIRTUAL TABLE vt USING fs(idx);
  SELECT * FROM vt;
} {
  1 {a b c d e f g h i j k l m n o p q r s t u v w x y z} 
  2 {a b c d e f g h i j k l m a b c d e f g h i j k l m}
  3 {n o p q r s t u v w x y z n o p q r s t u v w x y z}
}

do_execsql_test 10.2 {
  SELECT * FROM vt WHERE rowid = 2;
} {
  2 {a b c d e f g h i j k l m a b c d e f g h i j k l m}
}

do_execsql_test 10.3 {
  CREATE VIRTUAL TABLE ft USING fts4(content=vt);
  INSERT INTO ft(ft) VALUES('rebuild');
}

do_execsql_test 10.4 {
  SELECT snippet(ft, '[', ']', '...', -1, 5) FROM ft WHERE ft MATCH 'e'
} {
  {...c d [e] f g...} {...c d [e] f g...}
}

do_execsql_test 10.5 {
  SELECT snippet(ft, '[', ']', '...', -1, 5) FROM ft WHERE ft MATCH 't'
} {
  {...r s [t] u v...} {...r s [t] u v...}
}

do_execsql_test 10.6 { DELETE FROM ft WHERE docid=2 }

do_execsql_test 10.7 {
  SELECT snippet(ft, '[', ']', '...', -1, 5) FROM ft WHERE ft MATCH 'e'
} {
  {...c d [e] f g...}
}

finish_test