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Overview
Comment:Add extra crash test cases that stress the savepoint mechanism to savepoint4.test. Currently, these tests are causing database corruption which (obviously) needs to be fixed. (CVS 6044)
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SHA1: e06a968aa5b17ce12ea179b36a99ad74d274fd2c
User & Date: danielk1977 2008-12-19 18:45:53
Context
2008-12-20
02:06
Enhanced analysis of OR terms in a WHERE clause. Another step toward being able to use indices with OR-connected WHERE clause terms. (CVS 6045) (check-in: c3f7aa01 user: drh tags: trunk)
2008-12-19
18:45
Add extra crash test cases that stress the savepoint mechanism to savepoint4.test. Currently, these tests are causing database corruption which (obviously) needs to be fixed. (CVS 6044) (check-in: e06a968a user: danielk1977 tags: trunk)
16:31
Add some crash-tests for savepoint. Fix a bug revealed by these tests. (CVS 6043) (check-in: 6f36c166 user: danielk1977 tags: trunk)
Changes
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Changes to test/savepoint4.test. 

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#
#    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.
#
#***********************************************************************
#
# $Id: savepoint4.test,v 1.1 2008/12/19 16:31:12 danielk1977 Exp $

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


proc signature {} {
  return [db eval {SELECT count(*), md5sum(x) FROM t3}]
}



expr srand(0)

do_test savepoint4-1 {
  execsql {
    PRAGMA cache_size=10;
    BEGIN;
    CREATE TABLE t3(x TEXT);
    INSERT INTO t3 VALUES(randstr(10,400));
    INSERT INTO t3 VALUES(randstr(10,400));
    INSERT INTO t3 SELECT randstr(10,400) FROM t3;
    INSERT INTO t3 SELECT randstr(10,400) FROM t3;
    INSERT INTO t3 SELECT randstr(10,400) FROM t3;
    INSERT INTO t3 SELECT randstr(10,400) FROM t3;
    INSERT INTO t3 SELECT randstr(10,400) FROM t3;
    INSERT INTO t3 SELECT randstr(10,400) FROM t3;
    INSERT INTO t3 SELECT randstr(10,400) FROM t3;
    INSERT INTO t3 SELECT randstr(10,400) FROM t3;
    INSERT INTO t3 SELECT randstr(10,400) FROM t3;
    COMMIT;
    SELECT count(*) FROM t3;
  }
} {1024}


unset -nocomplain ::sig

for {set ii 1} {$ii<25} {incr ii} {
  set ::sig [signature]

  set crashed 1
  for {set iDelay 1} {$crashed} {incr iDelay} {

    do_test savepoint4-$ii.1.$iDelay {
      set ret [crashsql -delay $iDelay -file test.db-journal {
        PRAGMA cache_size = 20;
        SAVEPOINT one;
          DELETE FROM t3 WHERE random()%2==0;
          SAVEPOINT two;
            INSERT INTO t3 SELECT randstr(10,10)||x FROM t3;
           ROLLBACK TO two;
            UPDATE t3 SET x = randstr(10, 400) WHERE random()%10;
          RELEASE two;
        ROLLBACK TO one;

      }]
      signature
    } $::sig

    set crashed [lindex $ret 0]
    integrity_check savepoint4-$ii.1.$iDelay.integrity
  }









  do_test savepoint4-$ii.2 {
    execsql {








































































      DELETE FROM t3 WHERE random()%10==0;
      INSERT INTO t3 SELECT randstr(10,10)||x FROM t3 WHERE random()%9==0;
    }
  } {}
}

finish_test









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#
#    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.
#
#***********************************************************************
#
# $Id: savepoint4.test,v 1.2 2008/12/19 18:45:53 danielk1977 Exp $

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


proc signature {} {
  return [db eval {SELECT count(*), md5sum(x) FROM t1}]
}

set ITERATIONS 3

expr srand(0)

do_test savepoint4-1 {
  execsql {
    PRAGMA cache_size=10;
    BEGIN;
    CREATE TABLE t1(x TEXT);
    INSERT INTO t1 VALUES(randstr(10,400));
    INSERT INTO t1 VALUES(randstr(10,400));
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    COMMIT;
    SELECT count(*) FROM t1;
  }
} {1024}


unset -nocomplain ::sig

for {set ii 1} {$ii<=$ITERATIONS} {incr ii} {
  set ::sig [signature]


  for {set iDelay 1 ; set crashed 1} {$crashed} {incr iDelay} {

    do_test savepoint4-1.$ii.1.$iDelay {
      set ret [crashsql -delay $iDelay -file test.db-journal {
        PRAGMA cache_size = 20;
        SAVEPOINT one;
          DELETE FROM t1 WHERE random()%2==0;
          SAVEPOINT two;
            INSERT INTO t1 SELECT randstr(10,10)||x FROM t1;
           ROLLBACK TO two;
            UPDATE t1 SET x = randstr(10, 400) WHERE random()%10;
          RELEASE two;
        ROLLBACK TO one;
        RELEASE one;
      }]
      signature
    } $::sig

    set crashed [lindex $ret 0]
    integrity_check savepoint4-1.$ii.1.$iDelay.integrity
  }

  do_test savepoint4-1.$ii.2 {
    execsql {
      DELETE FROM t1 WHERE random()%10==0;
      INSERT INTO t1 SELECT randstr(10,10)||x FROM t1 WHERE random()%9==0;
    }
  } {}
}

do_test savepoint4-2 {
  execsql {
    PRAGMA cache_size=10;
    DROP TABLE IF EXISTS t1;
    BEGIN;
    CREATE TABLE t1(x TEXT);
    CREATE INDEX i1 ON t1(x);
    INSERT INTO t1 VALUES(randstr(10,400));
    INSERT INTO t1 VALUES(randstr(10,400));
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    INSERT INTO t1 SELECT randstr(10,400) FROM t1;
    COMMIT;
    SELECT count(*) FROM t1;
  }
} {256}

for {set ii 1} {$ii<=$ITERATIONS} {incr ii} {
  set ::sig [signature]
  set file test.db-journal

  for {set iDelay 1 ; set crashed 1} {$crashed} {incr iDelay} {

    do_test savepoint4-2.$ii.1.$iDelay {

      set ret [crashsql -delay $iDelay -file $file {
        SAVEPOINT one;
          INSERT INTO t1 SELECT * FROM t1 WHERE rowid<50;
         ROLLBACK TO one;
          INSERT INTO t1 SELECT * FROM t1 WHERE rowid<50;
          SAVEPOINT two;
            DELETE FROM t1 WHERE (random()%10)==0;
            SAVEPOINT three;
              DELETE FROM t1 WHERE (random()%10)==0;
              SAVEPOINT four;
                DELETE FROM t1 WHERE (random()%10)==0;
          RELEASE two;

          SAVEPOINT three;
            UPDATE t1 SET x = x||x WHERE (rowid%12)==0;
            SAVEPOINT four;
              UPDATE t1 SET x = x||x WHERE (rowid%14)==0;
           ROLLBACK TO three;
            UPDATE t1 SET x = x||x WHERE (rowid%13)==0;
          RELEASE three;

        DELETE FROM t1 WHERE rowid > (SELECT rowid FROM t1 LIMIT 1 OFFSET 256);
        RELEASE one;
      }]

      set crashed [lindex $ret 0]
      if {$crashed} {
        signature
      } else {
        set ::sig
      }
    } $::sig

    integrity_check savepoint4-2.$ii.1.$iDelay.integrity

    if {$crashed == 0 && $file == "test.db-journal"} {
      set crashed 1
      set iDelay 0
      set file test.db
      set ::sig [signature]
    }
  }

  do_test savepoint4-2.$ii.2 {
    execsql {
      DELETE FROM t1 WHERE random()%10==0;
      INSERT INTO t1 SELECT randstr(10,10)||x FROM t1 WHERE random()%9==0;
    }
  } {}
}

finish_test

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