| # 2012 October 13 |
| # |
| # 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. |
| # |
| #*********************************************************************** |
| # |
| # The tests in this file verify that if an empty database (zero bytes in |
| # size) is used as the source of a backup operation, the final destination |
| # database is one page in size. |
| # |
| # The destination must consist of at least one page as truncating a |
| # database file to zero bytes is equivalent to resetting the database |
| # schema cookie and change counter. Doing that could cause other clients |
| # to become confused and continue using out-of-date cache data. |
| # |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| set testprefix backup4 |
| |
| # The codec logic does not work for zero-length database files. A database |
| # file must contain at least one page in order to be recognized as an |
| # encrypted database. |
| do_not_use_codec |
| |
| #------------------------------------------------------------------------- |
| # At one point this test was failing because [db] was using an out of |
| # date schema in test case 1.2. |
| # |
| do_execsql_test 1.0 { |
| CREATE TABLE t1(x, y, UNIQUE(x, y)); |
| INSERT INTO t1 VALUES('one', 'two'); |
| SELECT * FROM t1 WHERE x='one'; |
| PRAGMA integrity_check; |
| } {one two ok} |
| |
| do_test 1.1 { |
| sqlite3 db1 :memory: |
| db1 backup test.db |
| sqlite3 db1 test.db |
| db1 eval { |
| CREATE TABLE t1(x, y); |
| INSERT INTO t1 VALUES('one', 'two'); |
| } |
| db1 close |
| } {} |
| |
| do_execsql_test 1.2 { |
| SELECT * FROM t1 WHERE x='one'; |
| PRAGMA integrity_check; |
| } {one two ok} |
| |
| db close |
| forcedelete test.db |
| forcedelete test.db2 |
| sqlite3 db test.db |
| |
| #------------------------------------------------------------------------- |
| # Test that if the source is zero bytes, the destination database |
| # consists of a single page only. |
| # |
| do_execsql_test 2.1 { |
| CREATE TABLE t1(a, b); |
| CREATE INDEX i1 ON t1(a, b); |
| } |
| do_test 2.2 { file size test.db } [expr $AUTOVACUUM ? 4096 : 3072] |
| |
| do_test 2.3 { |
| sqlite3 db1 test.db2 |
| db1 backup test.db |
| db1 close |
| file size test.db |
| } {1024} |
| |
| do_test 2.4 { file size test.db2 } 0 |
| |
| db close |
| forcedelete test.db |
| forcedelete test.db2 |
| sqlite3 db test.db |
| |
| #------------------------------------------------------------------------- |
| # Test that if the destination has a page-size larger than the implicit |
| # page-size of the source, the final destination database still consists |
| # of a single page. |
| # |
| do_execsql_test 3.1 { |
| PRAGMA page_size = 4096; |
| CREATE TABLE t1(a, b); |
| CREATE INDEX i1 ON t1(a, b); |
| } |
| do_test 3.2 { file size test.db } [expr $AUTOVACUUM ? 16384 : 12288] |
| |
| do_test 3.3 { |
| sqlite3 db1 test.db2 |
| db1 backup test.db |
| db1 close |
| file size test.db |
| } {1024} |
| |
| do_test 3.4 { file size test.db2 } 0 |
| |
| finish_test |