xref: /sqlite-3.40.0/test/fuzz_malloc.test (revision 253c6ee1) 
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
17set testdir [file dirname $argv0]
18source $testdir/tester.tcl
19
20source $testdir/malloc_common.tcl
21source $testdir/fuzz_common.tcl
22
23if {[info exists G(isquick)]} {
24  set ::REPEATS 20
25} elseif {[info exists G(issoak)]} {
26  set ::REPEATS 100
27} else {
28  set ::REPEATS 40
29}
30
31#
32# Usage: do_fuzzy_malloc_test <testname> ?<options>?
33#
34#     -template
35#     -sqlprep
36#     -repeats
37#
38proc do_fuzzy_malloc_test {testname args} {
39  set ::fuzzyopts(-repeats) $::REPEATS
40  set ::fuzzyopts(-sqlprep) {}
41  array set ::fuzzyopts $args
42
43  sqlite3_memdebug_fail -1
44  db close
45  delete_file test.db test.db-journal
46  sqlite3 db test.db
47  set ::prep $::fuzzyopts(-sqlprep)
48  execsql $::prep
49  set jj 0
50  for {set ii 0} {$ii < $::fuzzyopts(-repeats)} {incr ii} {
51    expr srand($jj)
52    incr jj
53    set ::sql [subst $::fuzzyopts(-template)]
54    # puts fuzyy-sql=\[$::sql\]; flush stdout
55    foreach {rc ::fmtres} [catchsql "$::sql"] {}
56    if {$rc==0} {
57      set nErr1 [set_test_counter errors]
58      do_faultsim_test $testname-$ii -faults oom* -body {
59        execsql $::sql
60      } -test {
61        if {$testrc && $testresult!="datatype mismatch"} {
62          faultsim_test_result {0 {}}
63        }
64      }
65      if {[set_test_counter errors]>$nErr1} {
66        puts "Previous fuzzy-sql=\[$::sql\]"
67        flush stdout
68      }
69    } else {
70      incr ii -1
71    }
72  }
73}
74
75#----------------------------------------------------------------
76# Test malloc failure during parsing (and execution) of a fuzzily
77# generated expressions.
78#
79do_fuzzy_malloc_test fuzzy_malloc-1 -template {Select [Expr]}
80do_fuzzy_malloc_test fuzzy_malloc-2 -template {[Select]}
81
82set ::SQLPREP {
83  BEGIN;
84    CREATE TABLE abc(a, b, c);
85    CREATE TABLE def(a, b, c);
86    CREATE TABLE ghi(a, b, c);
87    INSERT INTO abc VALUES(1.5, 3, 'a short string');
88    INSERT INTO def VALUES(NULL, X'ABCDEF',
89        'a longer string. Long enough that it doesn''t fit in Mem.zShort');
90    INSERT INTO ghi VALUES(zeroblob(1000), 'hello world', -1257900987654321);
91  COMMIT;
92}
93set ::TableList  [list abc def ghi]
94set ::ColumnList [list a b c]
95
96do_fuzzy_malloc_test fuzzy_malloc-3 \
97  -template {[Select]}              \
98  -sqlprep $::SQLPREP
99
100finish_test
101