xref: /sqlite-3.40.0/test/fuzz_malloc.test (revision 9142a83d) 
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 1.3 2007/06/15 13:57:20 drh Exp $
16
17set testdir [file dirname $argv0]
18source $testdir/tester.tcl
19
20# Only run these tests if memory debugging is turned on.
21#
22if {[info command sqlite_malloc_stat]==""} {
23  puts "Skipping fuzz_malloc tests: not compiled with -DSQLITE_MEMDEBUG=1"
24  finish_test
25  return
26}
27
28
29source $testdir/fuzz_common.tcl
30source $testdir/malloc_common.tcl
31
32set ::REPEATS 20
33
34#
35# Usage: do_fuzzy_malloc_test <testname> ?<options>?
36#
37#     -template
38#     -sqlprep
39#     -repeats
40#
41proc do_fuzzy_malloc_test {testname args} {
42  set ::fuzzyopts(-repeats) $::REPEATS
43  set ::fuzzyopts(-sqlprep) {}
44  array set ::fuzzyopts $args
45
46  sqlite_malloc_fail 0
47  db close
48  file delete test.db test.db-journal
49  sqlite3 db test.db
50  set ::prep $::fuzzyopts(-sqlprep)
51  execsql $::prep
52
53  for {set ii 0} {$ii < $::fuzzyopts(-repeats)} {incr ii} {
54    set ::sql [subst $::fuzzyopts(-template)]
55    foreach {rc res} [catchsql "$::sql"] {}
56    if {$rc==0} {
57      do_malloc_test $testname-$ii -sqlbody $::sql -sqlprep $::prep
58    } else {
59      incr ii -1
60    }
61  }
62}
63
64#----------------------------------------------------------------
65# Test malloc failure during parsing (and execution) of a fuzzily
66# generated expressions.
67#
68do_fuzzy_malloc_test fuzzy_malloc-1 -template {Select [Expr]}
69do_fuzzy_malloc_test fuzzy_malloc-2 -template {[Select]}
70
71set ::SQLPREP {
72  BEGIN;
73    CREATE TABLE abc(a, b, c);
74    CREATE TABLE def(a, b, c);
75    CREATE TABLE ghi(a, b, c);
76    INSERT INTO abc VALUES(1.5, 3, 'a short string');
77    INSERT INTO def VALUES(NULL, X'ABCDEF',
78        'a longer string. Long enough that it doesn''t fit in Mem.zShort');
79    INSERT INTO ghi VALUES(zeroblob(1000), 'hello world', -1257900987654321);
80  COMMIT;
81}
82set ::TableList  [list abc def ghi]
83set ::ColumnList [list a b c]
84
85do_fuzzy_malloc_test fuzzy_malloc-3 \
86  -template {[Select]}              \
87  -sqlprep $::SQLPREP
88
89sqlite_malloc_fail 0
90finish_test
91