#

 # 2007 May 10

 #

 # 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 tests malloc failures in concert with fuzzy SQL generation.

 #

 # $Id: fuzz_malloc.test,v 1.10 2008/08/20 16:35:10 drh Exp $

 set testdir [file dirname $argv0]

 source $testdir/tester.tcl

 ifcapable !memdebug {

   finish_test

   return

 }

 source $testdir/malloc_common.tcl

 source $testdir/fuzz_common.tcl

 if {[info exists ISQUICK]} {

   set ::REPEATS 20

 } elseif {[info exists SOAKTEST]} {

   set ::REPEATS 100

 } else {

   set ::REPEATS 40

 }

 #

 # Usage: do_fuzzy_malloc_test <testname> ?<options>?

 # 

 #     -template

 #     -sqlprep

 #     -repeats

 #     

 proc do_fuzzy_malloc_test {testname args} {

   set ::fuzzyopts(-repeats) $::REPEATS

   set ::fuzzyopts(-sqlprep) {}

   array set ::fuzzyopts $args

   sqlite3_memdebug_fail -1

   db close

   file delete test.db test.db-journal

   sqlite3 db test.db

   set ::prep $::fuzzyopts(-sqlprep)

   execsql $::prep

   set jj 0

   for {set ii 0} {$ii < $::fuzzyopts(-repeats)} {incr ii} {

     expr srand($jj)

     incr jj

     set ::sql [subst $::fuzzyopts(-template)]

     # puts fuzyy-sql=\[$::sql\]; flush stdout

     foreach {rc res} [catchsql "$::sql"] {}

     if {$rc==0} {

       do_malloc_test $testname-$ii -sqlbody $::sql -sqlprep $::prep

     } else {

       incr ii -1

     }

   }

 }

 #----------------------------------------------------------------

 # Test malloc failure during parsing (and execution) of a fuzzily 

 # generated expressions.

 #

 do_fuzzy_malloc_test fuzzy_malloc-1 -template {Select [Expr]}

 do_fuzzy_malloc_test fuzzy_malloc-2 -template {[Select]}

 set ::SQLPREP {

   BEGIN;

     CREATE TABLE abc(a, b, c);

     CREATE TABLE def(a, b, c);

     CREATE TABLE ghi(a, b, c);

     INSERT INTO abc VALUES(1.5, 3, 'a short string');

     INSERT INTO def VALUES(NULL, X'ABCDEF', 

         'a longer string. Long enough that it doesn''t fit in Mem.zShort');

     INSERT INTO ghi VALUES(zeroblob(1000), 'hello world', -1257900987654321);

   COMMIT;

 }

 set ::TableList  [list abc def ghi]

 set ::ColumnList [list a b c]

 do_fuzzy_malloc_test fuzzy_malloc-3 \

   -template {[Select]}              \

   -sqlprep $::SQLPREP

 finish_test