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# 2011 December 20
# 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 testing the ability of SQLite to handle database
# files larger than 4GB.
if {[file exists skip-big-file]} return
if {$tcl_platform(os)=="Darwin"} return
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix bigfile2
# Create a small database.
do_execsql_test 1.1 {
CREATE TABLE t1(a, b);
# Pad the file out to 4GB in size. Then clear the file-size field in the
# db header. This will cause SQLite to assume that the first 4GB of pages
# are actually in use and new pages will be appended to the file.
db close
if {[catch {fake_big_file 4096 [get_pwd]/test.db} msg]} {
puts "**** Unable to create a file larger than 4096 MB. *****"
hexio_write test.db 28 00000000
do_test 1.2 {
file size test.db
} [expr 14 + 4096 * (1<<20)]
# Now insert a large row. The overflow pages will be located past the 4GB
# boundary. Then, after opening and closing the database, test that the row
# can be read back in.
set str [string repeat k 30000]
do_test 1.3 {
sqlite3 db test.db
execsql { INSERT INTO t1 VALUES(3, $str) }
db close
sqlite3 db test.db
db one { SELECT b FROM t1 WHERE a = 3 }
} $str
db close
delete_file test.db