sqlite/test/cursorhint.test

# 2014 July 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.
#

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

do_execsql_test 1.0 {
  CREATE TABLE t1(a,b);
  CREATE TABLE t2(x,y);
  INSERT INTO t1 VALUES(10, 15);
  INSERT INTO t1 VALUES(20, 25);
  INSERT INTO t2 VALUES('ten', 'fifteen');
  INSERT INTO t2 VALUES('twenty', 'twentyfive');
  PRAGMA automatic_index = 0;
}

proc H {expr} {
  lappend ::cursorhint $expr
}

proc do_cursorhint_test {tn sql hints} {
  cursorhint_hook H
  set ::cursorhint [list]
  set testbody [subst {
    execsql {$sql}
    set ::cursorhint
  }]
  uplevel [list do_test $tn $testbody [list {*}$hints]]
  cursorhint_hook
}


do_cursorhint_test 1.1 {
  SELECT * FROM t1 CROSS JOIN t2 WHERE a=x;
} {
  {(10 == col(0))} 
  {(20 == col(0))}
}

do_cursorhint_test 1.2 {
  SELECT * FROM t2 CROSS JOIN t1 WHERE a=x;
} {
  {(col(0) == 'ten')} 
  {(col(0) == 'twenty')}
}

do_cursorhint_test 1.3 {
  SELECT * FROM t1 CROSS JOIN t2 WHERE b=15;
} {
  {(col(1) == 15)} 
}

do_cursorhint_test 1.3 {
  SELECT * FROM t1 CROSS JOIN t2 WHERE y=b+1;
} {
  {(col(1) == (15 + 1))} 
  {(col(1) == (25 + 1))} 
}


finish_test