#
# 2001 September 15
#
# 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 test is errors returned by collation sequence comparison
# functions.

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

db collate xxx xxx_collate xxx_mkkey

proc xxx_collate {a b} { return [string compare $a $b] }
proc xxx_mkkey {a}     { return $a }

do_execsql_test 1.0 {
  CREATE TABLE t1(a COLLATE xxx, b COLLATE xxx);
  INSERT INTO t1 VALUES('abc', 'def');
  INSERT INTO t1 VALUES('jkl', 'ghi');
}

foreach {tn sql res} {
  1 { SELECT max(a, b) FROM t1 }   {def jkl} 
  2 { SELECT max(a) FROM t1 }      {jkl} 
  3 { SELECT nullif(a,b) FROM t1 } {abc jkl} 
  4 { SELECT a==b FROM t1 }        {0 0}
} {

  proc xxx_collate {a b} { return [string compare $a $b] }
  do_execsql_test 1.$tn.1 $sql $res
   
  proc xxx_collate {a b} {error "no good"}
  do_test 1.$tn.2 { catchsql $sql } {1 {SQL logic error or missing database}}
}

finish_test
