btree9.test

来自「sqlite-3.4.1,嵌入式数据库.是一个功能强大的开源数据库,给学习和研发」· TEST 代码 · 共 50 行

# 2007 May 01
#
# 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 btree database backend.
#
# $Id: btree9.test,v 1.1 2007/05/02 01:34:32 drh Exp $

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

# The sqlite3BtreeInsert() API now has an additional "nZero" parameter
# which specifies the number of zero bytes to append to the end of the
# data.  This feature allows large zero-filled BLOBs to be created without
# having to allocate a big chunk of memory to instantiate the blob.
#
# The following code tests the new feature.
#

# Create the database
#
do_test btree9-1.1 {
  file delete -force test1.bt
  file delete -force test1.bt-journal
  set b1 [btree_open test1.bt 2000 0]
  btree_begin_transaction $b1
  set t1 [btree_create_table $b1 5]
  set c1 [btree_cursor $b1 $t1 1]
  btree_insert $c1 1 data-for-1 20000
  btree_move_to $c1 1
  btree_key $c1
} {1}
do_test btree9-1.2 {
  btree_payload_size $c1
} {20010}


btree_close_cursor $c1
btree_commit $b1
btree_close $b1

finish_test