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    1: #
    2: # 2007 May 10
    3: #
    4: # The author disclaims copyright to this source code.  In place of
    5: # a legal notice, here is a blessing:
    6: #
    7: #    May you do good and not evil.
    8: #    May you find forgiveness for yourself and forgive others.
    9: #    May you share freely, never taking more than you give.
   10: #
   11: #***********************************************************************
   12: #
   13: # This file tests malloc failures in concert with fuzzy SQL generation.
   14: #
   15: # $Id: fuzz_malloc.test,v 1.1.1.1 2012/02/21 17:04:16 misho Exp $
   16: 
   17: set testdir [file dirname $argv0]
   18: source $testdir/tester.tcl
   19: 
   20: ifcapable !memdebug {
   21:   finish_test
   22:   return
   23: }
   24: 
   25: source $testdir/malloc_common.tcl
   26: source $testdir/fuzz_common.tcl
   27: 
   28: if {[info exists G(isquick)]} {
   29:   set ::REPEATS 20
   30: } elseif {[info exists G(issoak)]} {
   31:   set ::REPEATS 100
   32: } else {
   33:   set ::REPEATS 40
   34: }
   35: 
   36: #
   37: # Usage: do_fuzzy_malloc_test <testname> ?<options>?
   38: # 
   39: #     -template
   40: #     -sqlprep
   41: #     -repeats
   42: #     
   43: proc do_fuzzy_malloc_test {testname args} {
   44:   set ::fuzzyopts(-repeats) $::REPEATS
   45:   set ::fuzzyopts(-sqlprep) {}
   46:   array set ::fuzzyopts $args
   47: 
   48:   sqlite3_memdebug_fail -1
   49:   db close
   50:   delete_file test.db test.db-journal
   51:   sqlite3 db test.db
   52:   set ::prep $::fuzzyopts(-sqlprep)
   53:   execsql $::prep
   54:   set jj 0
   55:   for {set ii 0} {$ii < $::fuzzyopts(-repeats)} {incr ii} {
   56:     expr srand($jj)
   57:     incr jj
   58:     set ::sql [subst $::fuzzyopts(-template)]
   59:     # puts fuzyy-sql=\[$::sql\]; flush stdout
   60:     foreach {rc res} [catchsql "$::sql"] {}
   61:     if {$rc==0} {
   62:       do_malloc_test $testname-$ii -sqlbody $::sql -sqlprep $::prep
   63:     } else {
   64:       incr ii -1
   65:     }
   66:   }
   67: }
   68: 
   69: #----------------------------------------------------------------
   70: # Test malloc failure during parsing (and execution) of a fuzzily 
   71: # generated expressions.
   72: #
   73: do_fuzzy_malloc_test fuzzy_malloc-1 -template {Select [Expr]}
   74: do_fuzzy_malloc_test fuzzy_malloc-2 -template {[Select]}
   75: 
   76: set ::SQLPREP {
   77:   BEGIN;
   78:     CREATE TABLE abc(a, b, c);
   79:     CREATE TABLE def(a, b, c);
   80:     CREATE TABLE ghi(a, b, c);
   81:     INSERT INTO abc VALUES(1.5, 3, 'a short string');
   82:     INSERT INTO def VALUES(NULL, X'ABCDEF', 
   83:         'a longer string. Long enough that it doesn''t fit in Mem.zShort');
   84:     INSERT INTO ghi VALUES(zeroblob(1000), 'hello world', -1257900987654321);
   85:   COMMIT;
   86: }
   87: set ::TableList  [list abc def ghi]
   88: set ::ColumnList [list a b c]
   89: 
   90: do_fuzzy_malloc_test fuzzy_malloc-3 \
   91:   -template {[Select]}              \
   92:   -sqlprep $::SQLPREP
   93: 
   94: finish_test