1# 2001 October 12 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# This file implements regression tests for SQLite library. The 12# focus of this file is testing for correct handling of I/O errors 13# such as writes failing because the disk is full. 14# 15# The tests in this file use special facilities that are only 16# available in the SQLite test fixture. 17# 18# $Id: ioerr.test,v 1.20 2005/03/10 12:58:22 drh Exp $ 19 20set testdir [file dirname $argv0] 21source $testdir/tester.tcl 22 23# If SQLITE_DEFAULT_AUTOVACUUM is set to true, then a simulated IO error 24# on the 8th IO operation in the SQL script below doesn't report an error. 25# 26# This is because the 8th IO call attempts to read page 2 of the database 27# file when the file on disk is only 1 page. The pager layer detects that 28# this has happened and suppresses the error returned by the OS layer. 29# 30do_ioerr_test ioerr-1 -sqlprep { 31 SELECT * FROM sqlite_master; 32} -sqlbody { 33 CREATE TABLE t1(a,b,c); 34 SELECT * FROM sqlite_master; 35 BEGIN TRANSACTION; 36 INSERT INTO t1 VALUES(1,2,3); 37 INSERT INTO t1 VALUES(4,5,6); 38 ROLLBACK; 39 SELECT * FROM t1; 40 BEGIN TRANSACTION; 41 INSERT INTO t1 VALUES(1,2,3); 42 INSERT INTO t1 VALUES(4,5,6); 43 COMMIT; 44 SELECT * FROM t1; 45 DELETE FROM t1 WHERE a<100; 46} -exclude [expr [string match [execsql {pragma auto_vacuum}] 1] ? 8 : 0] 47 48# Test for IO errors during a VACUUM. 49# 50# The first IO call is excluded from the test. This call attempts to read 51# the file-header of the temporary database used by VACUUM. Since the 52# database doesn't exist at that point, the IO error is not detected. 53# 54# Additionally, if auto-vacuum is enabled, the 12th IO error is not 55# detected. Same reason as the 8th in the test case above. 56# 57ifcapable vacuum { 58 do_ioerr_test ioerr-2 -cksum true -sqlprep { 59 BEGIN; 60 CREATE TABLE t1(a, b, c); 61 INSERT INTO t1 VALUES(1, randstr(50,50), randstr(50,50)); 62 INSERT INTO t1 SELECT a+2, b||'-'||rowid, c||'-'||rowid FROM t1; 63 INSERT INTO t1 SELECT a+4, b||'-'||rowid, c||'-'||rowid FROM t1; 64 INSERT INTO t1 SELECT a+8, b||'-'||rowid, c||'-'||rowid FROM t1; 65 INSERT INTO t1 SELECT a+16, b||'-'||rowid, c||'-'||rowid FROM t1; 66 INSERT INTO t1 SELECT a+32, b||'-'||rowid, c||'-'||rowid FROM t1; 67 INSERT INTO t1 SELECT a+64, b||'-'||rowid, c||'-'||rowid FROM t1; 68 INSERT INTO t1 SELECT a+128, b||'-'||rowid, c||'-'||rowid FROM t1; 69 INSERT INTO t1 VALUES(1, randstr(600,600), randstr(600,600)); 70 CREATE TABLE t2 AS SELECT * FROM t1; 71 CREATE TABLE t3 AS SELECT * FROM t1; 72 COMMIT; 73 DROP TABLE t2; 74 } -sqlbody { 75 VACUUM; 76 } -exclude [list \ 77 1 [expr [string match [execsql {pragma auto_vacuum}] 1]?12:-1]] 78} 79 80do_ioerr_test ioerr-3 -tclprep { 81 execsql { 82 PRAGMA cache_size = 10; 83 BEGIN; 84 CREATE TABLE abc(a); 85 INSERT INTO abc VALUES(randstr(1500,1500)); -- Page 4 is overflow 86 } 87 for {set i 0} {$i<150} {incr i} { 88 execsql { 89 INSERT INTO abc VALUES(randstr(100,100)); 90 } 91 } 92 execsql COMMIT 93} -sqlbody { 94 CREATE TABLE abc2(a); 95 BEGIN; 96 DELETE FROM abc WHERE length(a)>100; 97 UPDATE abc SET a = randstr(90,90); 98 COMMIT; 99 CREATE TABLE abc3(a); 100} 101 102# Test IO errors that can occur retrieving a record header that flows over 103# onto an overflow page. 104do_ioerr_test ioerr-4 -tclprep { 105 set sql "CREATE TABLE abc(a1" 106 for {set i 2} {$i<1300} {incr i} { 107 append sql ", a$i" 108 } 109 append sql ");" 110 execsql $sql 111 execsql {INSERT INTO abc (a1) VALUES(NULL)} 112} -sqlbody { 113 SELECT * FROM abc; 114} 115 116# Test IO errors that may occur during a multi-file commit. 117# 118# Tests 8 and 17 are excluded when auto-vacuum is enabled for the same 119# reason as in test cases ioerr-1.XXX 120set ex "" 121if {[string match [execsql {pragma auto_vacuum}] 1]} { 122 set ex [list 8 17] 123} 124do_ioerr_test ioerr-5 -sqlprep { 125 ATTACH 'test2.db' AS test2; 126} -sqlbody { 127 BEGIN; 128 CREATE TABLE t1(a,b,c); 129 CREATE TABLE test2.t2(a,b,c); 130 COMMIT; 131} -exclude $ex 132 133# Test IO errors when replaying two hot journals from a 2-file 134# transaction. This test only runs on UNIX. 135if {$tcl_platform(platform)=="unix" && [file exists ./crashtest] 136 && ![catch {sqlite3 -has-codec} r] && !$r} { 137 do_ioerr_test ioerr-6 -tclprep { 138 execsql { 139 ATTACH 'test2.db' as aux; 140 CREATE TABLE tx(a, b); 141 CREATE TABLE aux.ty(a, b); 142 } 143 set rc [crashsql 2 test2.db-journal { 144 ATTACH 'test2.db' as aux; 145 PRAGMA cache_size = 10; 146 BEGIN; 147 CREATE TABLE aux.t2(a, b, c); 148 CREATE TABLE t1(a, b, c); 149 COMMIT; 150 }] 151 if {$rc!="1 {child process exited abnormally}"} { 152 error "Wrong error message: $rc" 153 } 154 } -sqlbody { 155 SELECT * FROM sqlite_master; 156 SELECT * FROM aux.sqlite_master; 157 } 158} 159 160# Test handling of IO errors that occur while rolling back hot journal 161# files. 162# 163# These tests can't be run on windows because the windows version of 164# SQLite holds a mandatory exclusive lock on journal files it has open. 165# 166if {$tcl_platform(platform)!="windows"} { 167 do_ioerr_test ioerr-7 -tclprep { 168 db close 169 sqlite3 db2 test2.db 170 db2 eval { 171 PRAGMA synchronous = 0; 172 CREATE TABLE t1(a, b); 173 INSERT INTO t1 VALUES(1, 2); 174 BEGIN; 175 INSERT INTO t1 VALUES(3, 4); 176 } 177 copy_file test2.db test.db 178 copy_file test2.db-journal test.db-journal 179 db2 close 180 } -tclbody { 181 sqlite3 db test.db 182 db eval { 183 SELECT * FROM t1; 184 } 185 } -exclude 1 186} 187 188finish_test 189