| /trunk/test/jrnlmode3.test |
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| @@ -0,0 +1,149 @@ |
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| # 2009 April 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. |
| # |
| #*********************************************************************** |
| # |
| # Test cases inspired by ticket #3811. Tests to make sure that |
| # the journal_mode can only be changed at appropriate times and that |
| # all reported changes are effective. |
| # |
| # $Id: jrnlmode3.test,v 1.5 2009/04/20 17:43:03 drh Exp $ |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| |
| ifcapable {!pager_pragmas} { |
| finish_test |
| return |
| } |
| |
| # |
| # Verify that journal_mode=OFF works as long as it occurs before the first |
| # transaction, even if locking_mode=EXCLUSIVE is enabled. The behavior if |
| # journal_mode is changed after the first transaction is undefined and hence |
| # untested. |
| # |
| do_test jrnlmode3-1.1 { |
| db eval { |
| PRAGMA journal_mode=OFF; |
| PRAGMA locking_mode=EXCLUSIVE; |
| CREATE TABLE t1(x); |
| INSERT INTO t1 VALUES(1); |
| SELECT * FROM t1; |
| } |
| } {off exclusive 1} |
| do_test jrnlmode3-1.2 { |
| db eval { |
| BEGIN; |
| INSERT INTO t1 VALUES(2); |
| ROLLBACK; |
| SELECT * FROM t1; |
| } |
| } {1} |
| |
| db close |
| file delete -force test.db test.db-journal |
| sqlite3 db test.db |
| |
| do_test jrnlmode3-2.1 { |
| db eval { |
| PRAGMA locking_mode=EXCLUSIVE; |
| PRAGMA journal_mode=OFF; |
| CREATE TABLE t1(x); |
| INSERT INTO t1 VALUES(1); |
| SELECT * FROM t1; |
| } |
| } {exclusive off 1} |
| do_test jrnlmode3-2.2 { |
| db eval { |
| BEGIN; |
| INSERT INTO t1 VALUES(2); |
| ROLLBACK; |
| SELECT * FROM t1; |
| } |
| } {1} |
| |
| # Test cases to verify that we can move from any journal_mode |
| # to any other, as long as we are not in a transaction. Verify |
| # that we cannot change journal_mode while a transaction is active. |
| # |
| set all_journal_modes {delete persist truncate memory off} |
| set cnt 0 |
| foreach fromjmode $all_journal_modes { |
| foreach tojmode $all_journal_modes { |
| |
| # Skip the no-change cases |
| if {$fromjmode==$tojmode} continue |
| incr cnt |
| |
| # Start with a fresh database connection an empty database file. |
| # |
| db close |
| file delete -force test.db test.db-journal |
| sqlite3 db test.db |
| |
| # Initialize the journal mode. |
| # |
| do_test jrnlmode3-3.$cnt.1-($fromjmode-to-$tojmode) { |
| db eval "PRAGMA journal_mode = $fromjmode;" |
| } $fromjmode |
| |
| # Verify that the initial journal mode takes. |
| # |
| do_test jrnlmode3-3.$cnt.2 { |
| db eval {PRAGMA main.journal_mode} |
| } $fromjmode |
| |
| # Start a transaction and try to change the journal mode within |
| # the transaction. This should fail. |
| # |
| do_test jrnlmode3-3.$cnt.3 { |
| db eval { |
| CREATE TABLE t1(x); |
| BEGIN; |
| INSERT INTO t1 VALUES($cnt); |
| } |
| db eval "PRAGMA journal_mode=$tojmode" |
| } $fromjmode |
| |
| # Rollback the transaction. |
| # |
| do_test jrnlmode3-3.$cnt.4 { |
| db eval { |
| ROLLBACK; |
| SELECT * FROM t1; |
| } |
| } {} |
| |
| # Now change the journal mode again. This time the new mode |
| # should take. |
| # |
| do_test jrnlmode3-3.$cnt.5 { |
| db eval "PRAGMA journal_mode=$tojmode" |
| } $tojmode |
| |
| # Do a the transaction. Verify that the rollback occurred |
| # if journal_mode!=OFF. |
| # |
| do_test jrnlmode3-3.$cnt.6 { |
| db eval { |
| DROP TABLE IF EXISTS t1; |
| CREATE TABLE t1(x); |
| BEGIN; |
| INSERT INTO t1 VALUES(1); |
| } |
| db eval ROLLBACK |
| db eval { |
| SELECT * FROM t1; |
| } |
| } {} |
| } |
| } |
| |
| finish_test |
