AryaWu/sqlite

1# 2011 December 202#3# The author disclaims copyright to this source code.  In place of4# a legal notice, here is a blessing:5#6#    May you do good and not evil.7#    May you find forgiveness for yourself and forgive others.8#    May you share freely, never taking more than you give.9#10#***********************************************************************11# This file implements regression tests for SQLite library.  The12# focus of this script testing the ability of SQLite to handle database13# files larger than 4GB.14#15 16if {[file exists skip-big-file]} return17if {$tcl_platform(os)=="Darwin"} return18 19set testdir [file dirname $argv0]20source $testdir/tester.tcl21set testprefix bigfile222 23# Create a small database.24#25do_execsql_test 1.1 {26  CREATE TABLE t1(a, b);27  INSERT INTO t1 VALUES(1, 2);28}29 30# Pad the file out to 4GB in size. Then clear the file-size field in the31# db header. This will cause SQLite to assume that the first 4GB of pages32# are actually in use and new pages will be appended to the file.33#34db close35if {[catch {fake_big_file 4096 [get_pwd]/test.db} msg]} {36  puts "**** Unable to create a file larger than 4096 MB. *****"37  finish_test38  return39}40hexio_write test.db 28 0000000041 42do_test 1.2 {43  file size test.db44} [expr 14 + 4096 * (1<<20)]45 46# Now insert a large row. The overflow pages will be located past the 4GB47# boundary. Then, after opening and closing the database, test that the row48# can be read back in. 49# 50set str [string repeat k 30000]51do_test 1.3 {52  sqlite3 db test.db53  execsql { INSERT INTO t1 VALUES(3, $str) }54  db close55  sqlite3 db test.db56  db one { SELECT b FROM t1 WHERE a = 3 }57} $str58 59db close60delete_file test.db61 62finish_test63