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 1.34 2008/01/16 17:46:38 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 121ifcapable attach { 122 set ex "" 123 if {[string match [execsql {pragma auto_vacuum}] 1]} { 124 set ex [list 4 17] 125 } 126 do_ioerr_test ioerr-5 -sqlprep { 127 ATTACH 'test2.db' AS test2; 128 } -sqlbody { 129 BEGIN; 130 CREATE TABLE t1(a,b,c); 131 CREATE TABLE test2.t2(a,b,c); 132 COMMIT; 133 } -exclude $ex 134} 135 136# Test IO errors when replaying two hot journals from a 2-file 137# transaction. This test only runs on UNIX. 138ifcapable crashtest&&attach { 139 if {![catch {sqlite3 -has_codec} r] && !$r} { 140 do_ioerr_test ioerr-6 -tclprep { 141 execsql { 142 ATTACH 'test2.db' as aux; 143 CREATE TABLE tx(a, b); 144 CREATE TABLE aux.ty(a, b); 145 } 146 set rc [crashsql -delay 2 -file test2.db-journal { 147 ATTACH 'test2.db' as aux; 148 PRAGMA cache_size = 10; 149 BEGIN; 150 CREATE TABLE aux.t2(a, b, c); 151 CREATE TABLE t1(a, b, c); 152 COMMIT; 153 }] 154 if {$rc!="1 {child process exited abnormally}"} { 155 error "Wrong error message: $rc" 156 } 157 } -sqlbody { 158 SELECT * FROM sqlite_master; 159 SELECT * FROM aux.sqlite_master; 160 } 161 } 162} 163 164# Test handling of IO errors that occur while rolling back hot journal 165# files. 166# 167# These tests can't be run on windows because the windows version of 168# SQLite holds a mandatory exclusive lock on journal files it has open. 169# 170if {$tcl_platform(platform)!="windows"} { 171 do_ioerr_test ioerr-7 -tclprep { 172 db close 173 sqlite3 db2 test2.db 174 db2 eval { 175 PRAGMA synchronous = 0; 176 CREATE TABLE t1(a, b); 177 INSERT INTO t1 VALUES(1, 2); 178 BEGIN; 179 INSERT INTO t1 VALUES(3, 4); 180 } 181 copy_file test2.db test.db 182 copy_file test2.db-journal test.db-journal 183 db2 close 184 } -tclbody { 185 sqlite3 db test.db 186 db eval { 187 SELECT * FROM t1; 188 } 189 } -exclude 1 190} 191 192# For test coverage: Cause an I/O failure while trying to read a 193# short field (one that fits into a Mem buffer without mallocing 194# for space). 195# 196do_ioerr_test ioerr-8 -tclprep { 197 execsql { 198 CREATE TABLE t1(a,b,c); 199 INSERT INTO t1 VALUES(randstr(200,200), randstr(1000,1000), 2); 200 } 201 db close 202 sqlite3 db test.db 203} -sqlbody { 204 SELECT c FROM t1; 205} 206 207# For test coverage: Cause an IO error whilst reading the master-journal 208# name from a journal file. 209if {$tcl_platform(platform)=="unix"} { 210 do_ioerr_test ioerr-9 -tclprep { 211 execsql { 212 CREATE TABLE t1(a,b,c); 213 INSERT INTO t1 VALUES(randstr(200,200), randstr(1000,1000), 2); 214 BEGIN; 215 INSERT INTO t1 VALUES(randstr(200,200), randstr(1000,1000), 2); 216 } 217 copy_file test.db-journal test2.db-journal 218 execsql { 219 COMMIT; 220 } 221 copy_file test2.db-journal test.db-journal 222 set f [open test.db-journal a] 223 fconfigure $f -encoding binary 224 puts -nonewline $f "hello" 225 puts -nonewline $f "\x00\x00\x00\x05\x01\x02\x03\x04" 226 puts -nonewline $f "\xd9\xd5\x05\xf9\x20\xa1\x63\xd7" 227 close $f 228 } -sqlbody { 229 SELECT a FROM t1; 230 } 231} 232 233# For test coverage: Cause an IO error during statement playback (i.e. 234# a constraint). 235do_ioerr_test ioerr-10 -tclprep { 236 execsql { 237 BEGIN; 238 CREATE TABLE t1(a PRIMARY KEY, b); 239 } 240 for {set i 0} {$i < 500} {incr i} { 241 execsql {INSERT INTO t1 VALUES(:i, 'hello world');} 242 } 243 execsql { 244 COMMIT; 245 } 246} -tclbody { 247 248 catch {execsql { 249 BEGIN; 250 INSERT INTO t1 VALUES('abc', 123); 251 INSERT INTO t1 VALUES('def', 123); 252 INSERT INTO t1 VALUES('ghi', 123); 253 INSERT INTO t1 SELECT (a+500)%900, 'good string' FROM t1; 254 }} msg 255 256 if {$msg != "column a is not unique"} { 257 error $msg 258 } 259} 260 261# Assertion fault bug reported by alex dimitrov. 262# 263do_ioerr_test ioerr-11 -erc 1 -sqlprep { 264 CREATE TABLE A(Id INTEGER, Name TEXT); 265 INSERT INTO A(Id, Name) VALUES(1, 'Name'); 266} -sqlbody { 267 UPDATE A SET Id = 2, Name = 'Name2' WHERE Id = 1; 268} 269 270# Test that an io error encountered in a sync() caused by a call to 271# sqlite3_release_memory() is handled Ok. Only try this if 272# memory-management is enabled. 273# 274ifcapable memorymanage { 275 do_ioerr_test memmanage-ioerr1 -sqlprep { 276 BEGIN; 277 CREATE TABLE t1(a, b, c); 278 INSERT INTO t1 VALUES(randstr(50,50), randstr(100,100), randstr(10,10)); 279 INSERT INTO t1 SELECT randstr(50,50), randstr(9,9), randstr(90,90) FROM t1; 280 INSERT INTO t1 SELECT randstr(50,50), randstr(9,9), randstr(90,90) FROM t1; 281 INSERT INTO t1 SELECT randstr(50,50), randstr(9,9), randstr(90,90) FROM t1; 282 INSERT INTO t1 SELECT randstr(50,50), randstr(9,9), randstr(90,90) FROM t1; 283 INSERT INTO t1 SELECT randstr(50,50), randstr(9,9), randstr(90,90) FROM t1; 284 } -tclbody { 285 sqlite3_release_memory 286 } -sqlbody { 287 COMMIT; 288 } 289} 290 291finish_test 292