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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 1.10 2008/08/20 16:35:10 drh 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 ISQUICK]} { |  | 
|  29   set ::REPEATS 20 |  | 
|  30 } elseif {[info exists SOAKTEST]} { |  | 
|  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   file delete 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 |  | 
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