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Annotation of embedaddon/sqlite3/test/corrupt8.test, revision 1.1.1.1

1.1       misho       1: # 2008 July 9
                      2: #
                      3: # The author disclaims copyright to this source code.  In place of
                      4: # a legal notice, here is a blessing:
                      5: #
                      6: #    May you do good and not evil.
                      7: #    May you find forgiveness for yourself and forgive others.
                      8: #    May you share freely, never taking more than you give.
                      9: #
                     10: #***********************************************************************
                     11: # This file implements regression tests for SQLite library.
                     12: #
                     13: # This file implements tests to make sure SQLite does not crash or
                     14: # segfault if it sees a corrupt database file.  It specifically focuses
                     15: # on corrupt pointer map pages.
                     16: #
                     17: # $Id: corrupt8.test,v 1.2 2008/07/11 03:34:10 drh Exp $
                     18: 
                     19: set testdir [file dirname $argv0]
                     20: source $testdir/tester.tcl
                     21: 
                     22: # Do not use a codec for tests in this file, as the database file is
                     23: # manipulated directly using tcl scripts (using the [hexio_write] command).
                     24: #
                     25: do_not_use_codec
                     26: 
                     27: # We must have the page_size pragma for these tests to work.
                     28: #
                     29: ifcapable !pager_pragmas||!autovacuum {
                     30:   finish_test
                     31:   return
                     32: }
                     33: 
                     34: # Create a database to work with.
                     35: #
                     36: do_test corrupt8-1.1 {
                     37:   execsql {
                     38:     PRAGMA auto_vacuum=1;
                     39:     PRAGMA page_size=1024;
                     40:     CREATE TABLE t1(x);
                     41:     INSERT INTO t1(x) VALUES(1);
                     42:     INSERT INTO t1(x) VALUES(2);
                     43:     INSERT INTO t1(x) SELECT x+2 FROM t1;
                     44:     INSERT INTO t1(x) SELECT x+4 FROM t1;
                     45:     INSERT INTO t1(x) SELECT x+8 FROM t1;
                     46:     INSERT INTO t1(x) SELECT x+16 FROM t1;
                     47:     INSERT INTO t1(x) SELECT x+32 FROM t1;
                     48:     INSERT INTO t1(x) SELECT x+64 FROM t1;
                     49:     INSERT INTO t1(x) SELECT x+128 FROM t1;
                     50:     INSERT INTO t1(x) SELECT x+256 FROM t1;
                     51:     CREATE TABLE t2(a,b);
                     52:     INSERT INTO t2 SELECT x, x*x FROM t1;
                     53:   }
                     54:   expr {[file size test.db]>1024*12}
                     55: } {1}
                     56: integrity_check corrupt8-1.2
                     57: 
                     58: # Loop through each ptrmap entry.  Corrupt the entry and make sure the
                     59: # corruption is detected by the integrity_check.
                     60: #
                     61: for {set i 1024} {$i<2048} {incr i 5} {
                     62:   set oldval [hexio_read test.db $i 1]
                     63:   if {$oldval==0} break
                     64:   hexio_write test.db $i 00
                     65:   do_test corrupt8-2.$i.0 {
                     66:     db close
                     67:     sqlite3 db test.db
                     68:     set x [db eval {PRAGMA integrity_check}]
                     69:     expr {$x!="ok"}
                     70:   } {1}
                     71:   for {set k 1} {$k<=5} {incr k} {
                     72:     if {$k==$oldval} continue
                     73:     hexio_write test.db $i 0$k
                     74:     do_test corrupt8-2.$i.$k {
                     75:       db close
                     76:       sqlite3 db test.db
                     77:       set x [db eval {PRAGMA integrity_check}]
                     78:       expr {$x!="ok"}
                     79:     } {1}
                     80:   }
                     81:   hexio_write test.db $i 06
                     82:   do_test corrupt8-2.$i.6 {
                     83:     db close
                     84:     sqlite3 db test.db
                     85:     set x [db eval {PRAGMA integrity_check}]
                     86:     expr {$x!="ok"}
                     87:   } {1}
                     88:   hexio_write test.db $i $oldval
                     89:   if {$oldval>2} {
                     90:     set i2 [expr {$i+1+$i%4}]
                     91:     set oldval [hexio_read test.db $i2 1]
                     92:     hexio_write test.db $i2 [format %02x [expr {($oldval+1)&0xff}]]
                     93:     do_test corrupt8-2.$i.7 {
                     94:       db close
                     95:       sqlite3 db test.db
                     96:       set x [db eval {PRAGMA integrity_check}]
                     97:       expr {$x!="ok"}
                     98:     } {1}
                     99:     hexio_write test.db $i2 $oldval
                    100:   }
                    101: }
                    102: 
                    103: 
                    104: finish_test