SQLite

Artifact f9241e8738fe8d05655fd096e4c8a88ee22d8990:

• File test/superlock.test — part of check-in [1a3e7417a2] at 2010-11-19 18:20:10 on branch superlock — Add file test_superlock.c with example code for obtaining an exclusive lock on either rollback or wal mode databases. (user: dan size: 2869) [more...]

# 2010 November 19
#
# 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.
#
#***********************************************************************
#

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

set testprefix superlock

do_execsql_test 1.1 {
  CREATE TABLE t1(a, b);
  INSERT INTO t1 VALUES(1, 2);
  PRAGMA journal_mode = DELETE;
} {delete}

do_test 1.2 { sqlite3demo_superlock unlock test.db } {unlock}
do_catchsql_test 1.3 { SELECT * FROM t1 } {1 {database is locked}}
do_test 1.4 { unlock } {}

do_execsql_test 2.1 { 
  INSERT INTO t1 VALUES(3, 4);
  PRAGMA journal_mode = WAL;
} {wal}

do_test 2.2 { sqlite3demo_superlock unlock test.db } {unlock}
do_catchsql_test 2.3 { SELECT * FROM t1 }           {1 {database is locked}}
do_catchsql_test 2.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
do_catchsql_test 2.5 { PRAGMA wal_checkpoint }      {1 {database is locked}}
do_test 2.6 { unlock } {}

do_execsql_test 3.1 { INSERT INTO t1 VALUES(3, 4) } 

do_test 3.2 { sqlite3demo_superlock unlock test.db } {unlock}
do_catchsql_test 3.3 { SELECT * FROM t1 }           {1 {database is locked}}
do_catchsql_test 3.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
do_catchsql_test 3.5 { PRAGMA wal_checkpoint }      {1 {database is locked}}
do_test 3.6 { unlock } {}

do_execsql_test 4.1 { PRAGMA wal_checkpoint } {}

do_test 4.2 { sqlite3demo_superlock unlock test.db } {unlock}
do_catchsql_test 4.3 { SELECT * FROM t1 }           {1 {database is locked}}
do_catchsql_test 4.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
do_catchsql_test 4.5 { PRAGMA wal_checkpoint }      {1 {database is locked}}
do_test 4.6 { unlock } {}

do_multiclient_test tn {
  proc busyhandler {x} {
    switch -- $x {
      1 { sql1 "COMMIT" }
      2 { sql2 "COMMIT" }
      3 { sql3 "COMMIT" }
    }
    lappend ::busylist $x
    return 1
  }
  set ::busylist [list]

  do_test 5.$tn.1 {
    sql1 {
      CREATE TABLE t1(a, b);
      PRAGMA journal_mode = WAL;
      INSERT INTO t1 VALUES(1, 2);
    }
  } {wal}

  do_test 5.$tn.2 {
    sql1 { BEGIN ; SELECT * FROM t1 }
    sql2 { BEGIN ; INSERT INTO t1 VALUES(3, 4) }
    sql3 { BEGIN ; SELECT * FROM t1 }
  } {1 2}

  do_test 5.$tn.3 {
    set ::busylist [list]
    sqlite3demo_superlock unlock test.db "" busyhandler
    set ::busylist
  } {0 1 2 3}

  do_test 5.$tn.4 { csql2 { SELECT * FROM t1 } } {1 {database is locked}}
  do_test 5.$tn.5 { 
    csql3 { INSERT INTO t1 VALUES(5, 6) } 
  } {1 {database is locked}}
  do_test 5.$tn.6 { csql1 "PRAGMA wal_checkpoint" } {1 {database is locked}}

  do_test 5.$tn.7 { unlock } {}
}


finish_test