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103 lines
2.3 KiB
Plaintext
103 lines
2.3 KiB
Plaintext
# 2005 October 3
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library.
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#
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# This file implements tests the ability of the library to open
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# many different databases at the same time without leaking memory.
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#
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# $Id: manydb.test,v 1.4 2008/11/21 00:10:35 aswift Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set N 300
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# if we're using proxy locks, we use 5 filedescriptors for a db
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# that is open and in the middle of writing changes, normally
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# sqlite uses 3 (proxy locking adds the conch and the local lock)
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set using_proxy 0
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foreach {name value} [array get env SQLITE_FORCE_PROXY_LOCKING] {
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set using_proxy value
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}
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set num_fd_per_openwrite_db 3
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if {$using_proxy>0} {
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set num_fd_per_openwrite_db 5
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}
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# First test how many file descriptors are available for use. To open a
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# database for writing SQLite requires 3 file descriptors (the database, the
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# journal and the directory).
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set filehandles {}
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catch {
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for {set i 0} {$i<($N * 3)} {incr i} {
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lappend filehandles [open testfile.1 w]
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}
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}
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foreach fd $filehandles {
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close $fd
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}
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catch {
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forcedelete testfile.1
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}
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set N [expr $i / $num_fd_per_openwrite_db]
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# Create a bunch of random database names
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#
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unset -nocomplain dbname
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unset -nocomplain used
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for {set i 0} {$i<$N} {incr i} {
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while 1 {
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set name test-[format %08x [expr {int(rand()*0x7fffffff)}]].db
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if {[info exists used($name)]} continue
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set dbname($i) $name
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set used($name) $i
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break
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}
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}
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# Create a bunch of databases
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#
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for {set i 0} {$i<$N} {incr i} {
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do_test manydb-1.$i {
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sqlite3 db$i $dbname($i)
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execsql {
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CREATE TABLE t1(a,b);
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BEGIN;
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INSERT INTO t1 VALUES(1,2);
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} db$i
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} {}
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}
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# Finish the transactions
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#
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for {set i 0} {$i<$N} {incr i} {
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do_test manydb-2.$i {
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execsql {
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COMMIT;
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SELECT * FROM t1;
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} db$i
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} {1 2}
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}
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# Close the databases and erase the files.
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#
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for {set i 0} {$i<$N} {incr i} {
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do_test manydb-3.$i {
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db$i close
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forcedelete $dbname($i)
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} {}
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}
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finish_test
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