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Artifact d0d313f059ae5661726d3f197ba6ed8f69257d8e:


# 2008 June 28
#
# 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 regression tests for SQLite library.  The
# focus of this script is database locks.
#
# $Id: lock5.test,v 1.6 2008/12/04 12:34:16 drh Exp $

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

# This file is only run if using the unix backend compiled with the
# SQLITE_ENABLE_LOCKING_STYLE macro.
db close
if {[catch {sqlite3 db test.db -vfs unix-none} msg]} {
  finish_test
  return
}
db close
file delete -force test.db.lock

ifcapable lock_proxy_pragmas {
  set ::using_proxy 0
  foreach {name value} [array get env SQLITE_FORCE_PROXY_LOCKING] {
    set ::using_proxy $value
  }
  # Disable the proxy locking for these tests
  set env(SQLITE_FORCE_PROXY_LOCKING) "0"
}


do_test lock5-dotfile.1 {
  sqlite3 db test.db -vfs unix-dotfile
  execsql {
    BEGIN;
    CREATE TABLE t1(a, b);
  }
} {}

do_test lock5-dotfile.2 {
  file exists test.db.lock
} {1}

do_test lock5-dotfile.3 {
  execsql COMMIT
  file exists test.db.lock
} {0}

do_test lock5-dotfile.4 {
  sqlite3 db2 test.db -vfs unix-dotfile
  execsql {
    INSERT INTO t1 VALUES('a', 'b');
    SELECT * FROM t1;
  } db2
} {a b}

do_test lock5-dotfile.5 {
  execsql {
    BEGIN;
    SELECT * FROM t1;
  } db2
} {a b}

do_test lock5-dotfile.6 {
  file exists test.db.lock
} {1}

do_test lock5-dotfile.7 {
  catchsql { SELECT * FROM t1; }
} {1 {database is locked}}

do_test lock5-dotfile.8 {
  execsql {
    SELECT * FROM t1;
    ROLLBACK;
  } db2
} {a b}

do_test lock5-dotfile.9 {
  catchsql { SELECT * FROM t1; }
} {0 {a b}}

do_test lock5-dotfile.10 {
  file exists test.db.lock
} {0}

do_test lock5-dotfile.X {
  db2 close
  execsql {BEGIN EXCLUSIVE}
  db close
  file exists test.db.lock
} {0}

#####################################################################

file delete -force test.db
if {[catch {sqlite3 db test.db -vfs unix-flock} msg]} {
  finish_test
  return
}

# Only run the flock tests on a local file system
if { [path_is_local "."] } {

  do_test lock5-flock.1 {
    sqlite3 db test.db -vfs unix-flock
    execsql {
      CREATE TABLE t1(a, b);
      BEGIN;
      INSERT INTO t1 VALUES(1, 2);
    }
  } {}

  # Make sure we are not accidentally using the dotfile locking scheme.
  do_test lock5-flock.2 {
    file exists test.db.lock
  } {0}

  do_test lock5-flock.3 {
    catch { sqlite3 db2 test.db -vfs unix-flock }
    catchsql { SELECT * FROM t1 } db2
  } {1 {database is locked}}

  do_test lock5-flock.4 {
    execsql COMMIT
    catchsql { SELECT * FROM t1 } db2
  } {0 {1 2}}

  do_test lock5-flock.5 {
    execsql BEGIN
    catchsql { SELECT * FROM t1 } db2
  } {0 {1 2}}

  do_test lock5-flock.6 {
    execsql {SELECT * FROM t1}
    catchsql { SELECT * FROM t1 } db2
  } {1 {database is locked}}

  do_test lock5-flock.7 {
    db close
    catchsql { SELECT * FROM t1 } db2
  } {0 {1 2}}

  do_test lock5-flock.8 {
    db2 close
  } {}

  #####################################################################

  do_test lock5-none.1 {
    sqlite3 db test.db -vfs unix-none
    sqlite3 db2 test.db -vfs unix-none
    execsql {
      BEGIN;
      INSERT INTO t1 VALUES(3, 4);
    }
  } {}
  do_test lock5-none.2 {
    execsql { SELECT * FROM t1 }
  } {1 2 3 4}
  do_test lock5-flock.3 {
    execsql { SELECT * FROM t1 } db2
  } {1 2}
  do_test lock5-none.4 {
    execsql { 
      BEGIN;
      SELECT * FROM t1;
    } db2
  } {1 2}
  do_test lock5-none.5 {
    execsql COMMIT
    execsql {SELECT * FROM t1} db2
  } {1 2}

  ifcapable memorymanage {
    do_test lock5-none.6 {
      sqlite3_release_memory 1000000
      execsql {SELECT * FROM t1} db2
    } {1 2 3 4}
  }

  do_test lock5-flock.X {
    db close
    db2 close
  } {}
}

ifcapable lock_proxy_pragmas {
  set env(SQLITE_FORCE_PROXY_LOCKING) $::using_proxy
}

finish_test