SQLite

# The focus of this file is testing the ability of the database to
# uses its rollback journal to recover intact (no database corruption)
# from a power failure during the middle of a COMMIT.  The OS interface
# modules are overloaded using the modified I/O routines found in test6.c.  
# These routines allow us to simulate the kind of file damage that 
# occurs after a power failure.
#
# $Id: crash.test,v 1.27 2008/01/08 15:18:52 drh Exp $

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

ifcapable !crashtest {
  finish_test
  return

    CREATE TABLE abc(a, b, c);
    INSERT INTO abc VALUES(1, 2, 3);
    INSERT INTO abc VALUES(4, 5, 6);
  }
  set ::sig [signature]
  expr 0
} {0}
for {set i 0} {$i<10} {incr i} {
  set seed [expr {int(abs(rand()*10000))}]
  do_test crash-1.2.$i {
    crashsql -delay 1 -file test.db-journal -seed $seed {
    DELETE FROM abc WHERE a = 1;
  }
} {1 {child process exited abnormally}}
  do_test crash-1.3.$i {
  signature
} $::sig
}
do_test crash-1.4 {
  crashsql -delay 1 -file test.db {
    DELETE FROM abc WHERE a = 1;
  }
} {1 {child process exited abnormally}}
do_test crash-1.5 {
  signature

    INSERT INTO abc SELECT * FROM abc;
  }
  expr ([file size test.db] / 1024) > 450
} {1}
for {set i 1} {$i < $repeats} {incr i} {
  set sig [signature]
  do_test crash-3.$i.1 {
     set seed [expr {int(abs(rand()*10000))}]
     crashsql -delay [expr $i%5 + 1] -file test.db-journal -seed $seed "
       BEGIN;
       SELECT random() FROM abc LIMIT $i;
       INSERT INTO abc VALUES(randstr(10,10), 0, 0);
       DELETE FROM abc WHERE random()%10!=0;
       COMMIT;
     "
  } {1 {child process exited abnormally}}

      CREATE TABLE aux.abc2 AS SELECT 2*a as a, 2*b as b, 2*c as c FROM abc;
    }
    expr ([file size test2.db] / 1024) > 450
  } {1}
  
  set fin 0
  for {set i 1} {$i<$repeats} {incr i} {
    set seed [expr {int(abs(rand()*10000))}]
    set sig [signature]
    set sig2 [signature2]
    do_test crash-4.1.$i.1 {
       set c [crashsql -delay $i -file test.db-journal -seed $::seed "
         ATTACH 'test2.db' AS aux;
         BEGIN;
         SELECT randstr($i,$i) FROM abc LIMIT $i;
         INSERT INTO abc VALUES(randstr(10,10), 0, 0);
         DELETE FROM abc WHERE random()%10!=0;
         INSERT INTO abc2 VALUES(randstr(10,10), 0, 0);
         DELETE FROM abc2 WHERE random()%10!=0;

    do_test crash-4.1.$i.3 {
      signature2
    } $sig2
  } 
  set i 0
  set fin 0
  while {[incr i]} {
    set seed [expr {int(abs(rand()*10000))}]
    set sig [signature]
    set sig2 [signature2]
    set ::fin 0
    do_test crash-4.2.$i.1 {
       set c [crashsql -delay $i -file test2.db-journal -seed $::seed "
         ATTACH 'test2.db' AS aux;
         BEGIN;
         SELECT randstr($i,$i) FROM abc LIMIT $i;
         INSERT INTO abc VALUES(randstr(10,10), 0, 0);
         DELETE FROM abc WHERE random()%10!=0;
         INSERT INTO abc2 VALUES(randstr(10,10), 0, 0);
         DELETE FROM abc2 WHERE random()%10!=0;

# 2001 September 15
#
# 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 some common TCL routines used for regression
# testing the SQLite library
#
# $Id: tester.tcl,v 1.97 2008/01/08 15:18:52 drh Exp $


set tcl_precision 15
set sqlite_pending_byte 0x0010000

# 
# Check the command-line arguments for a default soft-heap-limit.

proc crashsql {args} {
  if {$::tcl_platform(platform)!="unix"} {
    error "crashsql should only be used on unix"
  }

  set blocksize ""
  set crashdelay 1
  set prngseed 0
  set crashfile ""
  set dc ""
  set sql [lindex $args end]
  
  for {set ii 0} {$ii < [llength $args]-1} {incr ii 2} {
    set z [lindex $args $ii]
    set n [string length $z]
    set z2 [lindex $args [expr $ii+1]]

    if     {$n>1 && [string first $z -delay]==0}     {set crashdelay $z2} \
    elseif {$n>1 && [string first $z -seed]==0}      {set prngseed $z2} \
    elseif {$n>1 && [string first $z -file]==0}      {set crashfile $z2}  \
    elseif {$n>1 && [string first $z -blocksize]==0} {set blocksize "-s $z2" } \
    elseif {$n>1 && [string first $z -characteristics]==0} {set dc "-c {$z2}" } \
    else   { error "Unrecognized option: $z" }
  }

  if {$crashfile eq ""} {

  # This block sets the cache size of the main database to 10
  # pages. This is done in case the build is configured to omit
  # "PRAGMA cache_size".
  puts $f {db eval {SELECT * FROM sqlite_master;}}
  puts $f {set bt [btree_from_db db]}
  puts $f {btree_set_cache_size $bt 10}
  if {$prngseed} {
    set seed [expr {$prngseed%10007+1}]
    # puts seed=$seed
    puts $f "db eval {SELECT randomblob($seed)}"
  }

  puts $f "db eval {"
  puts $f   "$sql"
  puts $f "}"
  close $f

  set r [catch {