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 1.21 2005/08/20 13:47:42 drh Exp $ 19 20set testdir [file dirname $argv0] 21source $testdir/tester.tcl 22 23 24# If SQLITE_DEFAULT_AUTOVACUUM is set to true, then a simulated IO error 25# on the 8th IO operation in the SQL script below doesn't report an error. 26# 27# This is because the 8th IO call attempts to read page 2 of the database 28# file when the file on disk is only 1 page. The pager layer detects that 29# this has happened and suppresses the error returned by the OS layer. 30# 31do_ioerr_test ioerr-1 -sqlprep { 32 SELECT * FROM sqlite_master; 33} -sqlbody { 34 CREATE TABLE t1(a,b,c); 35 SELECT * FROM sqlite_master; 36 BEGIN TRANSACTION; 37 INSERT INTO t1 VALUES(1,2,3); 38 INSERT INTO t1 VALUES(4,5,6); 39 ROLLBACK; 40 SELECT * FROM t1; 41 BEGIN TRANSACTION; 42 INSERT INTO t1 VALUES(1,2,3); 43 INSERT INTO t1 VALUES(4,5,6); 44 COMMIT; 45 SELECT * FROM t1; 46 DELETE FROM t1 WHERE a<100; 47} -exclude [expr [string match [execsql {pragma auto_vacuum}] 1] ? 8 : 0] 48 49# Test for IO errors during a VACUUM. 50# 51# The first IO call is excluded from the test. This call attempts to read 52# the file-header of the temporary database used by VACUUM. Since the 53# database doesn't exist at that point, the IO error is not detected. 54# 55# Additionally, if auto-vacuum is enabled, the 12th IO error is not 56# detected. Same reason as the 8th in the test case above. 57# 58ifcapable vacuum { 59 do_ioerr_test ioerr-2 -cksum true -sqlprep { 60 BEGIN; 61 CREATE TABLE t1(a, b, c); 62 INSERT INTO t1 VALUES(1, randstr(50,50), randstr(50,50)); 63 INSERT INTO t1 SELECT a+2, b||'-'||rowid, c||'-'||rowid FROM t1; 64 INSERT INTO t1 SELECT a+4, b||'-'||rowid, c||'-'||rowid FROM t1; 65 INSERT INTO t1 SELECT a+8, b||'-'||rowid, c||'-'||rowid FROM t1; 66 INSERT INTO t1 SELECT a+16, b||'-'||rowid, c||'-'||rowid FROM t1; 67 INSERT INTO t1 SELECT a+32, b||'-'||rowid, c||'-'||rowid FROM t1; 68 INSERT INTO t1 SELECT a+64, b||'-'||rowid, c||'-'||rowid FROM t1; 69 INSERT INTO t1 SELECT a+128, b||'-'||rowid, c||'-'||rowid FROM t1; 70 INSERT INTO t1 VALUES(1, randstr(600,600), randstr(600,600)); 71 CREATE TABLE t2 AS SELECT * FROM t1; 72 CREATE TABLE t3 AS SELECT * FROM t1; 73 COMMIT; 74 DROP TABLE t2; 75 } -sqlbody { 76 VACUUM; 77 } -exclude [list \ 78 1 [expr [string match [execsql {pragma auto_vacuum}] 1]?12:-1]] 79} 80 81do_ioerr_test ioerr-3 -tclprep { 82 execsql { 83 PRAGMA cache_size = 10; 84 BEGIN; 85 CREATE TABLE abc(a); 86 INSERT INTO abc VALUES(randstr(1500,1500)); -- Page 4 is overflow 87 } 88 for {set i 0} {$i<150} {incr i} { 89 execsql { 90 INSERT INTO abc VALUES(randstr(100,100)); 91 } 92 } 93 execsql COMMIT 94} -sqlbody { 95 CREATE TABLE abc2(a); 96 BEGIN; 97 DELETE FROM abc WHERE length(a)>100; 98 UPDATE abc SET a = randstr(90,90); 99 COMMIT; 100 CREATE TABLE abc3(a); 101} 102 103# Test IO errors that can occur retrieving a record header that flows over 104# onto an overflow page. 105do_ioerr_test ioerr-4 -tclprep { 106 set sql "CREATE TABLE abc(a1" 107 for {set i 2} {$i<1300} {incr i} { 108 append sql ", a$i" 109 } 110 append sql ");" 111 execsql $sql 112 execsql {INSERT INTO abc (a1) VALUES(NULL)} 113} -sqlbody { 114 SELECT * FROM abc; 115} 116 117# Test IO errors that may occur during a multi-file commit. 118# 119# Tests 8 and 17 are excluded when auto-vacuum is enabled for the same 120# reason as in test cases ioerr-1.XXX 121set ex "" 122if {[string match [execsql {pragma auto_vacuum}] 1]} { 123 set ex [list 8 17] 124} 125do_ioerr_test ioerr-5 -sqlprep { 126 ATTACH 'test2.db' AS test2; 127} -sqlbody { 128 BEGIN; 129 CREATE TABLE t1(a,b,c); 130 CREATE TABLE test2.t2(a,b,c); 131 COMMIT; 132} -exclude $ex 133 134# Test IO errors when replaying two hot journals from a 2-file 135# transaction. This test only runs on UNIX. 136if {$tcl_platform(platform)=="unix" && [file exists ./crashtest] 137 && ![catch {sqlite3 -has-codec} r] && !$r} { 138 do_ioerr_test ioerr-6 -tclprep { 139 execsql { 140 ATTACH 'test2.db' as aux; 141 CREATE TABLE tx(a, b); 142 CREATE TABLE aux.ty(a, b); 143 } 144 set rc [crashsql 2 test2.db-journal { 145 ATTACH 'test2.db' as aux; 146 PRAGMA cache_size = 10; 147 BEGIN; 148 CREATE TABLE aux.t2(a, b, c); 149 CREATE TABLE t1(a, b, c); 150 COMMIT; 151 }] 152 if {$rc!="1 {child process exited abnormally}"} { 153 error "Wrong error message: $rc" 154 } 155 } -sqlbody { 156 SELECT * FROM sqlite_master; 157 SELECT * FROM aux.sqlite_master; 158 } 159} 160 161# Test handling of IO errors that occur while rolling back hot journal 162# files. 163# 164# These tests can't be run on windows because the windows version of 165# SQLite holds a mandatory exclusive lock on journal files it has open. 166# 167if {$tcl_platform(platform)!="windows"} { 168 do_ioerr_test ioerr-7 -tclprep { 169 db close 170 sqlite3 db2 test2.db 171 db2 eval { 172 PRAGMA synchronous = 0; 173 CREATE TABLE t1(a, b); 174 INSERT INTO t1 VALUES(1, 2); 175 BEGIN; 176 INSERT INTO t1 VALUES(3, 4); 177 } 178 copy_file test2.db test.db 179 copy_file test2.db-journal test.db-journal 180 db2 close 181 } -tclbody { 182 sqlite3 db test.db 183 db eval { 184 SELECT * FROM t1; 185 } 186 } -exclude 1 187} 188 189# For test coverage: Cause an I/O failure while trying to read a 190# short field (one that fits into a Mem buffer without mallocing 191# for space). 192# 193do_ioerr_test ioerr-8 -tclprep { 194 execsql { 195 CREATE TABLE t1(a,b,c); 196 INSERT INTO t1 VALUES(randstr(200,200), randstr(1000,1000), 2); 197 } 198 db close 199 sqlite3 db test.db 200} -sqlbody { 201 SELECT c FROM t1; 202} 203 204finish_test 205