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 1.28 2007/01/03 23:37:29 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 -erc 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] ? 4 : 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]?9:-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 4 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 $ex 133 134# Test IO errors when replaying two hot journals from a 2-file 135# transaction. This test only runs on UNIX. 136ifcapable crashtest { 137 if {![catch {sqlite3 -has_codec} r] && !$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: $rc" 154 } 155 } -sqlbody { 156 SELECT * FROM sqlite_master; 157 SELECT * FROM aux.sqlite_master; 158 } 159 } 160} 161 162# Test handling of IO errors that occur while rolling back hot journal 163# files. 164# 165# These tests can't be run on windows because the windows version of 166# SQLite holds a mandatory exclusive lock on journal files it has open. 167# 168btree_breakpoint 169if {$tcl_platform(platform)!="windows"} { 170 do_ioerr_test ioerr-7 -tclprep { 171 db close 172 sqlite3 db2 test2.db 173 db2 eval { 174 PRAGMA synchronous = 0; 175 CREATE TABLE t1(a, b); 176 INSERT INTO t1 VALUES(1, 2); 177 BEGIN; 178 INSERT INTO t1 VALUES(3, 4); 179 } 180 copy_file test2.db test.db 181 copy_file test2.db-journal test.db-journal 182 db2 close 183 } -tclbody { 184 sqlite3 db test.db 185 db eval { 186 SELECT * FROM t1; 187 } 188 } -exclude 1 189} 190 191# For test coverage: Cause an I/O failure while trying to read a 192# short field (one that fits into a Mem buffer without mallocing 193# for space). 194# 195do_ioerr_test ioerr-8 -tclprep { 196 execsql { 197 CREATE TABLE t1(a,b,c); 198 INSERT INTO t1 VALUES(randstr(200,200), randstr(1000,1000), 2); 199 } 200 db close 201 sqlite3 db test.db 202} -sqlbody { 203 SELECT c FROM t1; 204} 205 206# For test coverage: Cause an IO error whilst reading the master-journal 207# name from a journal file. 208if {$tcl_platform(platform)=="unix"} { 209 do_ioerr_test ioerr-9 -tclprep { 210 execsql { 211 CREATE TABLE t1(a,b,c); 212 INSERT INTO t1 VALUES(randstr(200,200), randstr(1000,1000), 2); 213 BEGIN; 214 INSERT INTO t1 VALUES(randstr(200,200), randstr(1000,1000), 2); 215 } 216 copy_file test.db-journal test2.db-journal 217 execsql { 218 COMMIT; 219 } 220 copy_file test2.db-journal test.db-journal 221 set f [open test.db-journal a] 222 fconfigure $f -encoding binary 223 puts -nonewline $f "hello" 224 puts -nonewline $f "\x00\x00\x00\x05\x01\x02\x03\x04" 225 puts -nonewline $f "\xd9\xd5\x05\xf9\x20\xa1\x63\xd7" 226 close $f 227 } -sqlbody { 228 SELECT a FROM t1; 229 } 230} 231 232# For test coverage: Cause an IO error during statement playback (i.e. 233# a constraint). 234do_ioerr_test ioerr-10 -tclprep { 235 execsql { 236 BEGIN; 237 CREATE TABLE t1(a PRIMARY KEY, b); 238 } 239 for {set i 0} {$i < 500} {incr i} { 240 execsql {INSERT INTO t1 VALUES(:i, 'hello world');} 241 } 242 execsql { 243 COMMIT; 244 } 245} -tclbody { 246 247 catch {execsql { 248 BEGIN; 249 INSERT INTO t1 VALUES('abc', 123); 250 INSERT INTO t1 VALUES('def', 123); 251 INSERT INTO t1 VALUES('ghi', 123); 252 INSERT INTO t1 SELECT (a+500)%900, 'good string' FROM t1; 253 }} msg 254 255 if {$msg != "column a is not unique"} { 256 error $msg 257 } 258} 259 260finish_test 261