# 2006 October 19

#

# The author disclaims copyright to this source code.

#

#*************************************************************************

# This file implements regression tests for SQLite library.  The focus

# of this script is testing handling of edge cases for various doclist

# merging functions in the FTS2 module query logic.

#

# $Id: fts2g.test,v 1.3 2007/11/16 00:23:08 shess Exp $

#

set testdir [file dirname $argv0]

source $testdir/tester.tcl

# If SQLITE_ENABLE_FTS2 is defined, omit this file.

ifcapable !fts2 {

  finish_test

  return

}

db eval {

  CREATE VIRTUAL TABLE t1 USING fts2(content);

  INSERT INTO t1 (rowid, content) VALUES(1, 'this is a test');

  INSERT INTO t1 (rowid, content) VALUES(2, 'also a test');

}

# No hits at all.  Returns empty doclists from termSelect().

do_test fts2g-1.1 {

  execsql {SELECT rowid FROM t1 WHERE t1 MATCH 'something'}

} {}

# Empty left in docListExceptMerge().

do_test fts2g-1.2 {

  execsql {SELECT rowid FROM t1 WHERE t1 MATCH '-this something'}

} {}

# Empty right in docListExceptMerge().

do_test fts2g-1.3 {

  execsql {SELECT rowid FROM t1 WHERE t1 MATCH 'this -something'}

} {1}

# Empty left in docListPhraseMerge().

do_test fts2g-1.4 {

  execsql {SELECT rowid FROM t1 WHERE t1 MATCH '"this something"'}

} {}

# Empty right in docListPhraseMerge().

do_test fts2g-1.5 {

  execsql {SELECT rowid FROM t1 WHERE t1 MATCH '"something is"'}

} {}

# Empty left in docListOrMerge().

do_test fts2g-1.6 {

  execsql {SELECT rowid FROM t1 WHERE t1 MATCH 'something OR this'}

} {1}

# Empty right in docListOrMerge().

do_test fts2g-1.7 {

  execsql {SELECT rowid FROM t1 WHERE t1 MATCH 'this OR something'}

} {1}

# Empty left in docListAndMerge().

do_test fts2g-1.8 {

  execsql {SELECT rowid FROM t1 WHERE t1 MATCH 'something this'}

} {}

# Empty right in docListAndMerge().

do_test fts2g-1.9 {

  execsql {SELECT rowid FROM t1 WHERE t1 MATCH 'this something'}

} {}

# No support for all-except queries.

do_test fts2g-1.10 {

  catchsql {SELECT rowid FROM t1 WHERE t1 MATCH '-this -something'}

} {1 {SQL logic error or missing database}}

# Test that docListOrMerge() correctly handles reaching the end of one

# doclist before it reaches the end of the other.

do_test fts2g-1.11 {

  execsql {SELECT rowid FROM t1 WHERE t1 MATCH 'this OR also'}

} {1 2}

do_test fts2g-1.12 {

  execsql {SELECT rowid FROM t1 WHERE t1 MATCH 'also OR this'}

} {1 2}

# Empty left and right in docListOrMerge().  Each term matches neither

# row, and when combined there was an assertion failure.

do_test fts2g-1.13 {

  execsql {SELECT rowid FROM t1 WHERE t1 MATCH 'something OR nothing'}

} {}

finish_test