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Overview
Comment:Another test case to test a specific kind of database corruption. (CVS 5352)
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SHA1: 38e04d67635d49661f9b95338fc1cb8197bf0bc7
User & Date: danielk1977 2008-07-07 17:04:23.000
Context
2008-07-07
17:13
Fix an error checked in as part of (5350). (CVS 5353) (check-in: acfb2b41ae user: danielk1977 tags: trunk)
17:04
Another test case to test a specific kind of database corruption. (CVS 5352) (check-in: 38e04d6763 user: danielk1977 tags: trunk)
15:39
Add a test case to test corruption discovered as part of the ptrmapPut() routine. (CVS 5351) (check-in: cbb9536fc4 user: danielk1977 tags: trunk)
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Changes to test/corrupt2.test.
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#
#***********************************************************************
# 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.
#
# $Id: corrupt2.test,v 1.6 2008/07/07 15:39:11 danielk1977 Exp $
# $Id: corrupt2.test,v 1.7 2008/07/07 17:04:23 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# The following tests - corrupt2-1.* - create some databases corrupted in
# specific ways and ensure that SQLite detects them as corrupt.
#
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  puts -nonewline $fd "\00\00\00\00" 
  close $fd

  sqlite3 db2 corrupt.db 
  catchsql {
    DROP TABLE t1;
  } db2
} {1 {database disk image is malformed}}
} {1 {malformed database schema (a3) - index a3 already exists}}

do_test corrupt2-4.1 {
  file delete -force corrupt.db
  file delete -force corrupt.db-journal
  sqlite3 db2 corrupt.db 

  execsql {
    PRAGMA page_size = 1024;
    CREATE TABLE t1(a, b, c);
    CREATE TABLE t2(a, b, c);
    INSERT INTO t2 VALUES(randomblob(100), randomblob(100), randomblob(100));
    INSERT INTO t2 SELECT * FROM t2;
    INSERT INTO t2 SELECT * FROM t2;
    INSERT INTO t2 SELECT * FROM t2;
    INSERT INTO t2 SELECT * FROM t2;
    INSERT INTO t1 SELECT * FROM t2;
  } db2

db2 close
  db2 close

  # This block links a page from table t2 into the t1 table structure.
  #
  set fd [open corrupt.db r+]
  fconfigure $fd -encoding binary -translation binary
  seek $fd [expr 1024 + 12]
  set zCelloffset [read $fd 2]
  binary scan $zCelloffset S iCelloffset
  seek $fd [expr 1024 + $iCelloffset]
  set zChildPage [read $fd 4]
  seek $fd [expr 2*1024 + 12]
  set zCelloffset [read $fd 2]
  binary scan $zCelloffset S iCelloffset
  seek $fd [expr 2*1024 + $iCelloffset]
  puts -nonewline $fd $zChildPage
  close $fd

  sqlite3 db2 corrupt.db 
  db2 eval {SELECT rowid FROM t1} {
    set result [db2 eval {pragma integrity_check}]
    break
  }
  set result
} {{*** in database main ***
Page 10: sqlite3BtreeInitPage() returns error code 11
On tree page 3 cell 1: Child page depth differs
On tree page 2 cell 0: 2nd reference to page 10
On tree page 2 cell 1: Child page depth differs
Page 4 is never used}}

db2 close

finish_test