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Diffstat (limited to 'test/corrupt8.test')
| -rw-r--r-- | test/corrupt8.test | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/test/corrupt8.test b/test/corrupt8.test new file mode 100644 index 0000000..d7bceba --- /dev/null +++ b/test/corrupt8.test @@ -0,0 +1,108 @@ +# 2008 July 9 +# +# 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 implements regression tests for SQLite library. +# +# This file implements tests to make sure SQLite does not crash or +# segfault if it sees a corrupt database file. It specifically focuses +# on corrupt pointer map pages. +# +# $Id: corrupt8.test,v 1.2 2008/07/11 03:34:10 drh Exp $ + +set testdir [file dirname $argv0] +source $testdir/tester.tcl + +# Do not use a codec for tests in this file, as the database file is +# manipulated directly using tcl scripts (using the [hexio_write] command). +# +do_not_use_codec + +# These tests deal with corrupt database files +# +database_may_be_corrupt + +# We must have the page_size pragma for these tests to work. +# +ifcapable !pager_pragmas||!autovacuum { + finish_test + return +} + +# Create a database to work with. +# +do_test corrupt8-1.1 { + execsql { + PRAGMA auto_vacuum=1; + PRAGMA page_size=1024; + CREATE TABLE t1(x); + INSERT INTO t1(x) VALUES(1); + INSERT INTO t1(x) VALUES(2); + INSERT INTO t1(x) SELECT x+2 FROM t1; + INSERT INTO t1(x) SELECT x+4 FROM t1; + INSERT INTO t1(x) SELECT x+8 FROM t1; + INSERT INTO t1(x) SELECT x+16 FROM t1; + INSERT INTO t1(x) SELECT x+32 FROM t1; + INSERT INTO t1(x) SELECT x+64 FROM t1; + INSERT INTO t1(x) SELECT x+128 FROM t1; + INSERT INTO t1(x) SELECT x+256 FROM t1; + CREATE TABLE t2(a,b); + INSERT INTO t2 SELECT x, x*x FROM t1; + } + expr {[file size test.db]>1024*12} +} {1} +integrity_check corrupt8-1.2 + +# Loop through each ptrmap entry. Corrupt the entry and make sure the +# corruption is detected by the integrity_check. +# +for {set i 1024} {$i<2048} {incr i 5} { + set oldval [hexio_read test.db $i 1] + if {$oldval==0} break + hexio_write test.db $i 00 + do_test corrupt8-2.$i.0 { + db close + sqlite3 db test.db + set x [db eval {PRAGMA integrity_check}] + expr {$x!="ok"} + } {1} + for {set k 1} {$k<=5} {incr k} { + if {$k==$oldval} continue + hexio_write test.db $i 0$k + do_test corrupt8-2.$i.$k { + db close + sqlite3 db test.db + set x [db eval {PRAGMA integrity_check}] + expr {$x!="ok"} + } {1} + } + hexio_write test.db $i 06 + do_test corrupt8-2.$i.6 { + db close + sqlite3 db test.db + set x [db eval {PRAGMA integrity_check}] + expr {$x!="ok"} + } {1} + hexio_write test.db $i $oldval + if {$oldval>2} { + set i2 [expr {$i+1+$i%4}] + set oldval [hexio_read test.db $i2 1] + hexio_write test.db $i2 [format %02x [expr {($oldval+1)&0xff}]] + do_test corrupt8-2.$i.7 { + db close + sqlite3 db test.db + set x [db eval {PRAGMA integrity_check}] + expr {$x!="ok"} + } {1} + hexio_write test.db $i2 $oldval + } +} + + +finish_test |