SQLite

#
# pager1-2.*: Test intra-process locking (multiple clients in this process).
#
# pager1-3.*: Savepoint related tests.
#
# pager1-4.*: Hot-journal related tests.
#
# pager1-5.*: Cases related to multi-file commits.
#

proc do_execsql_test {testname sql result} {
  uplevel do_test $testname [list "execsql {$sql}"] [list $result]
}
proc do_catchsql_test {testname sql result} {
  uplevel do_test $testname [list "catchsql {$sql}"] [list $result]
}

do_catchsql_test pager1-3.3 {
    INSERT INTO t1 SELECT a+3, randomblob(1500) FROM t1
} {1 {constraint failed}}
do_execsql_test pager1-3.4 { SELECT * FROM counter } {3 0}
do_execsql_test pager1-3.5 { SELECT a FROM t1 } {1 2 3}
do_execsql_test pager1-3.6 { COMMIT } {}

set otn 0
testvfs tv -default 1
foreach code [list {
  set s 512

} {
  set s 1024
  set sql { PRAGMA journal_mode = memory }
} {
  set s 2048
  tv devchar safe_append
} {
  set s 4096
} {
  set s 4096
  set sql { PRAGMA journal_mode = WAL }
} {
  set s 8192
  set sql { PRAGMA synchronous = off }
}] {

  incr otn
  set sql ""
  tv devchar {}
  eval $code
  tv sectorsize $s
  
  do_test pager1-3.7.$otn.0 {
    faultsim_delete_and_reopen
    execsql $sql
    execsql {
      PRAGMA cache_size = 10;
      CREATE TABLE t1(i INTEGER PRIMARY KEY, j blob);
    }
  } {}

  set tn 0
  set lowpoint 0
  foreach x {
    100 x 0 100
  x
    70 22 96 59 96 50 22 56 21 16 37 64 43 40  0 38 22 38 55  0  6   
    43 62 32 93 54 18 13 29 45 66 29 25 61 31 53 82 75 25 96 86 10 69   
     2 29  6 60 80 95 42 82 85 50 68 96 90 39 78 69 87 97 48 74 65 43   
  x
    86 34 26 50 41 85 58 44 89 22  6 51 45 46 58 32 97  6  1 12 32  2   
    69 39 48 71 33 31  5 58 90 43 24 54 12  9 18 57  4 38 91 42 27 45   
    50 38 56 29 10  0 26 37 83  1 78 15 47 30 75 62 46 29 68  5 30  4   
    27 96 33 95 79 75 56 10 29 70 32 75 52 88  5 36 50 57 46 63 88 65   
  x
    44 95 64 20 24 35 69 61 61  2 35 92 42 46 23 98 78  1 38 72 79 35   
    94 37 13 59  5 93 27 58 80 75 58  7 67 13 10 76 84  4  8 70 81 45   
     8 41 98  5 60 26 92 29 91 90  2 62 40  4  5 22 80 15 83 76 52 88   
    29  5 68 73 72  7 54 17 89 32 81 94 51 28 53 71  8 42 54 59 70 79   
  x












  } {
    incr tn
    set now [db one {SELECT count(i) FROM t1}]
    if {$x == "x"} {
      execsql { COMMIT ; BEGIN }
      set lowpoint $now
      do_test pager1.3.7.$otn.$tn { 
        sqlite3 db2 test.db
        execsql {
          SELECT COALESCE(max(i), 0) FROM t1;
          PRAGMA integrity_check;
        } 
      } [list $lowpoint ok]
      db2 close

        }
      } elseif {$now < $x} {
        for {set k $now} {$k < $x} {incr k} {
          execsql "SAVEPOINT sp_$k"
          execsql { INSERT INTO t1(j) VALUES(randomblob(1500)) }
        }
      }
      do_execsql_test pager1.3.7.$otn.$tn { 
        SELECT COALESCE(max(i), 0) FROM t1;
        PRAGMA integrity_check;
      } [list $x ok]
    }
  }
}
db close
tv delete

#-------------------------------------------------------------------------
# Hot journal rollback related test cases.
#
# pager1.4.1.*: Test that the pager module deletes very small invalid
#               journal files.
#
# pager1.4.2.*: Test that if the master journal pointer at the end of a
#               hot-journal file appears to be corrupt (checksum does not
#               compute) the associated journal is rolled back (and no
#               xAccess() call to check for the presence of any master 
#               journal file is made).
#
# pager1.4.3.*: Test that the contents of a hot-journal are ignored if the
#               page-size or sector-size in the journal header appear to
#               be invalid (too large, too small or not a power of 2).
# 
do_test pager1.4.1.1 {
  faultsim_delete_and_reopen
  execsql { 
    CREATE TABLE x(y, z);
    INSERT INTO x VALUES(1, 2);
  }

  hexio_write test.db-journal [expr [file size test.db-journal]-20] 123456
  foreach f [glob test.db-mj*] { file delete -force $f }
  execsql {
    SELECT count(*) FROM t1;
    PRAGMA integrity_check;
  }
} {4 ok}

do_test pager1.4.3.1 {
  testvfs tstvfs -default 1
  tstvfs filter xSync
  tstvfs script xSyncCallback
  proc xSyncCallback {method file args} {
    set file [file tail $file]
    if { 0==[string match *journal $file] } { faultsim_save }
  }
  faultsim_delete_and_reopen
  execsql {
    PRAGMA journal_mode = DELETE;
    CREATE TABLE t1(a, b);
    INSERT INTO t1 VALUES(1, 2);
    INSERT INTO t1 VALUES(3, 4);
  }
  db close
  tstvfs delete
} {}

foreach {tn ofst value result} {
          2   20    31       {1 2 3 4}
          3   20    32       {1 2 3 4}
          4   20    33       {1 2 3 4}
          5   20    65536    {1 2 3 4}
          6   20    131072   {1 2 3 4}

          7   24    511      {1 2 3 4}
          8   24    513      {1 2 3 4}
          9   24    65536    {1 2 3 4}

         10   32    65536    {1 2}
} {
  do_test pager1.4.3.$tn {
    faultsim_restore_and_reopen
    hexio_write test.db-journal $ofst [format %.8x $value]
    execsql { SELECT * FROM t1 }
  } $result
}
db close

#-------------------------------------------------------------------------
#

finish_test

} -test {
  faultsim_test_result {0 4}
  faultsim_integrity_check
  if {[db one { SELECT count(*) FROM t1 }] != 4} {
    error "Database content appears incorrect"
  }
}

#-------------------------------------------------------------------------
# Test fault-injection while rolling back a hot-journal file with a 
# page-size different from the current value stored on page 1 of the
# database file.
#
do_test pagerfault-2-pre1 {
  testvfs tv -default 1
  tv filter xSync
  tv script xSyncCb
  proc xSyncCb {filename args} {
    if {[string match *journal filename]==0} faultsim_save
  }
  faultsim_delete_and_reopen
  execsql {
    PRAGMA page_size = 4096;
    BEGIN;
      CREATE TABLE abc(a, b, c);
      INSERT INTO abc VALUES('o', 't', 't'); 
      INSERT INTO abc VALUES('f', 'f', 's'); 
      INSERT INTO abc SELECT * FROM abc; -- 4
      INSERT INTO abc SELECT * FROM abc; -- 8
      INSERT INTO abc SELECT * FROM abc; -- 16
      INSERT INTO abc SELECT * FROM abc; -- 32
      INSERT INTO abc SELECT * FROM abc; -- 64
      INSERT INTO abc SELECT * FROM abc; -- 128
      INSERT INTO abc SELECT * FROM abc; -- 256
    COMMIT;
    PRAGMA page_size = 1024;
    VACUUM;
  }
  db close
  tv delete
} {}
do_faultsim_test pagerfault-2 -prep {
  faultsim_restore_and_reopen
} -body {
  execsql { SELECT * FROM abc }
} -test {
  set answer [split [string repeat "ottffs" 128] ""]
  faultsim_test_result [list 0 $answer]
  faultsim_integrity_check
  set res [db eval { SELECT * FROM abc }]
  if {$res != $answer} { error "Database content appears incorrect ($res)" }
} -faults oom-transient

#-------------------------------------------------------------------------
# Test fault-injection while rolling back hot-journals that were created
# as part of a multi-file transaction.
#
do_test pagerfault-3-pre1 {
  testvfs tstvfs -default 1
  tstvfs filter xDelete
  tstvfs script xDeleteCallback

  proc xDeleteCallback {method file args} {
    set file [file tail $file]
    if { [string match *mj* $file] } { faultsim_save }

      REPLACE INTO t2 SELECT * FROM t1;
    COMMIT;
  }

  db close
  tstvfs delete
} {}
do_faultsim_test pagerfault-3 -faults ioerr-persistent -prep {
  faultsim_restore_and_reopen
} -body {
  execsql { 
    ATTACH 'test.db2' AS aux;
    SELECT count(*) FROM t2;
    SELECT count(*) FROM t1;
  }
} -test {
  faultsim_test_result {0 {4 4}} {1 {unable to open database: test.db2}}
  faultsim_integrity_check

  catchsql { ATTACH 'test.db2' AS aux }
  if {[db one { SELECT count(*) FROM t1 }] != 4
   || [db one { SELECT count(*) FROM t2 }] != 4
  } {
    error "Database content appears incorrect"
  }
}

#-------------------------------------------------------------------------
# Test fault-injection as part of a vanilla, no-transaction, INSERT
# statement.
#
do_faultsim_test pagerfault-4 -prep {
  faultsim_delete_and_reopen
} -body {
  execsql { 
    CREATE TABLE x(y);
    INSERT INTO x VALUES('z');
    SELECT * FROM x;
  }
} -test {
  faultsim_test_result {0 z}
  faultsim_integrity_check
}

#-------------------------------------------------------------------------
# Test fault-injection as part of a commit when using journal_mode=PERSIST.
#
do_test pagerfault-5-pre1 {
  faultsim_delete_and_reopen
  db func a_string a_string
  execsql {
    CREATE TABLE t1(a UNIQUE, b UNIQUE);
    INSERT INTO t1 VALUES(a_string(200), a_string(300));
    INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
    INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
  }
  faultsim_save_and_close
} {}
do_faultsim_test pagerfault-5.1 -prep {
  faultsim_restore_and_reopen
  db func a_string a_string
  execsql { PRAGMA journal_mode = PERSIST }
} -body {
  execsql { INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1 }
} -test {
  faultsim_test_result {0 {}}
  faultsim_integrity_check
}
do_faultsim_test pagerfault-5.2 -prep {
  faultsim_restore_and_reopen
  db func a_string a_string
  execsql { 
    PRAGMA journal_mode = PERSIST;
    PRAGMA journal_size_limit = 2048;
  }
} -body {
  execsql { INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1 }
} -test {
  faultsim_test_result {0 {}}
  faultsim_integrity_check
}

do_faultsim_test pagerfault-5.3 -prep {
  faultsim_restore_and_reopen
  db func a_string a_string
  file delete -force test2.db test2.db-journal test2.db-wal
  execsql { 
    PRAGMA journal_mode = PERSIST;
    ATTACH 'test2.db' AS aux;
    PRAGMA aux.journal_mode = PERSIST;
    PRAGMA aux.journal_size_limit = 0;
  }
} -body {
  execsql {
    BEGIN;
      INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
      CREATE TABLE aux.t2 AS SELECT * FROM t1;
    COMMIT;
  }
} -test {
  faultsim_test_result {0 {}}
}

finish_test