1 # 2001 September 15

     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 # The focus of this file is testing the ability of the database to

    14 # uses its rollback journal to recover intact (no database corruption)

    15 # from a power failure during the middle of a COMMIT. Even more

    16 # specifically, the tests in this file verify this functionality

    17 # for storage mediums with various sector sizes.

    18 #

    19 # $Id: crash2.test,v 1.6 2008/08/25 07:12:29 danielk1977 Exp $

    20 

    21 set testdir [file dirname $argv0]

    22 source $testdir/tester.tcl

    23 

    24 ifcapable !crashtest {

    25   finish_test

    26   return

    27 }

    28 

    29 db close

    30 

    31 # This test is designed to check that the crash-test infrastructure

    32 # can create files that do not consist of an integer number of

    33 # simulated disk blocks (i.e. 3KB file using 2KB disk blocks).

    34 #

    35 do_test crash2-1.1 {

    36   crashsql -delay 500 -file test.db -blocksize 2048 {

    37     PRAGMA auto_vacuum=OFF;

    38     PRAGMA page_size=1024;

    39     BEGIN;

    40     CREATE TABLE abc AS SELECT 1 AS a, 2 AS b, 3 AS c;

    41     CREATE TABLE def AS SELECT 1 AS d, 2 AS e, 3 AS f;

    42     COMMIT;

    43   }

    44   file size test.db

    45 } {3072}

    46 

    47 for {set ii 0} {$ii < 5} {incr ii} {

    48 

    49   # Simple test using the database created above: Create a new

    50   # table so that page 1 and page 4 are modified. Using a

    51   # block-size of 2048 and page-size of 1024, this means

    52   # pages 2 and 3 must also be saved in the journal to avoid

    53   # risking corruption.

    54   #

    55   # The loop is so that this test can be run with a couple

    56   # of different seeds for the random number generator.

    57   #

    58   do_test crash2-1.2.$ii {

    59     crashsql -file test.db -blocksize 2048 [subst {

    60       [string repeat {SELECT random();} $ii]

    61       CREATE TABLE hij(h, i, j);

    62     }]

    63     sqlite3 db test.db

    64     db eval {PRAGMA integrity_check}

    65   } {ok}

    66 }

    67 

    68 proc signature {} {

    69   return [db eval {SELECT count(*), md5sum(a), md5sum(b), md5sum(c) FROM abc}]

    70 }

    71 

    72 # Test case for crashing during journal sync with simulated

    73 # sector-size values from 1024 to 8192.

    74 #

    75 do_test crash2-2.0 {

    76   execsql BEGIN

    77   for {set n 0} {$n < 1000} {incr n} {

    78     execsql "INSERT INTO abc VALUES($n, [expr 2*$n], [expr 3*$n])"

    79   }

    80   execsql {

    81     INSERT INTO abc SELECT * FROM abc;

    82     INSERT INTO abc SELECT * FROM abc;

    83     INSERT INTO abc SELECT * FROM abc;

    84     INSERT INTO abc SELECT * FROM abc;

    85     INSERT INTO abc SELECT * FROM abc;

    86   }

    87   execsql COMMIT

    88   expr ([file size test.db] / 1024) > 450

    89 } {1}

    90 for {set i 1} {$i < 30} {incr i} {

    91   set sig [signature]

    92   set sector [expr 1024 * 1<<($i%4)]

    93   db close

    94   do_test crash2-2.$i.1 {

    95      crashsql -blocksize $sector -delay [expr $i%5 + 1] -file test.db-journal "

    96        PRAGMA temp_store = memory;

    97        BEGIN;

    98        SELECT random() FROM abc LIMIT $i;

    99        INSERT INTO abc SELECT randstr(10,10), 0, 0 FROM abc WHERE random()%2==0;

   100        DELETE FROM abc WHERE random()%2!=0;

   101        COMMIT;

   102      "

   103   } {1 {child process exited abnormally}}

   104   do_test crash2-2.$i.2 {

   105     sqlite3 db test.db

   106     signature

   107   } $sig

   108 } 

   109 

   110 

   111 # Test case for crashing during database sync with simulated

   112 # sector-size values from 1024 to 8192.

   113 #

   114 for {set i 1} {$i < 10} {incr i} {

   115   set sig [signature]

   116   set sector [expr 1024 * 1<<($i%4)]

   117   db close

   118   do_test crash2-3.$i.1 {

   119      crashsql -blocksize $sector -file test.db "

   120        BEGIN;

   121        SELECT random() FROM abc LIMIT $i;

   122        INSERT INTO abc SELECT randstr(10,10), 0, 0 FROM abc WHERE random()%2==0;

   123        DELETE FROM abc WHERE random()%2!=0;

   124        COMMIT;

   125      "

   126   } {1 {child process exited abnormally}}

   127   do_test crash2-3.$i.2 {

   128     sqlite3 db test.db

   129     signature

   130   } $sig

   131 } 

   132 

   133 finish_test