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1 # 2010 July 1 | |
2 # | |
3 # The author disclaims copyright to this source code. In place of | |
4 # 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 # Verify that an empty database and a non-empty WAL file do not | |
12 # result in database corruption | |
13 # | |
14 | |
15 set testdir [file dirname $argv0] | |
16 source $testdir/tester.tcl | |
17 source $testdir/malloc_common.tcl | |
18 ifcapable !wal {finish_test ; return } | |
19 | |
20 do_test wal4-1.1 { | |
21 execsql { | |
22 PRAGMA journal_mode=WAL; | |
23 CREATE TABLE t1(x); | |
24 INSERT INTO t1 VALUES(1); | |
25 INSERT INTO t1 VALUES(2); | |
26 SELECT x FROM t1 ORDER BY x; | |
27 } | |
28 } {wal 1 2} | |
29 | |
30 do_test wal4-1.2 { | |
31 # Save a copy of the file-system containing the wal and wal-index files | |
32 # only (no database file). | |
33 faultsim_save_and_close | |
34 forcedelete sv_test.db | |
35 } {} | |
36 | |
37 do_test wal4-1.3 { | |
38 faultsim_restore_and_reopen | |
39 catchsql { SELECT * FROM t1 } | |
40 } {1 {no such table: t1}} | |
41 | |
42 do_faultsim_test wal4-2 -prep { | |
43 faultsim_restore_and_reopen | |
44 } -body { | |
45 execsql { SELECT name FROM sqlite_master } | |
46 } -test { | |
47 # Result should be zero rows (empty db file). | |
48 # | |
49 faultsim_test_result {0 {}} | |
50 | |
51 # If the SELECT finished successfully, the WAL file should have been | |
52 # deleted. In no case should the database file have been written, so | |
53 # it should still be zero bytes in size regardless of whether or not | |
54 # a fault was injected. Test these assertions: | |
55 # | |
56 if { $testrc==0 && [file exists test.db-wal] } { | |
57 error "Wal file was not deleted" | |
58 } | |
59 if { [file size test.db]!=0 } { | |
60 error "Db file grew to [file size test.db] bytes" | |
61 } | |
62 } | |
63 | |
64 finish_test | |
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