# 2008 June 9 # # The author disclaims copyright to this source code. In place of # a legal notice, here is a blessing: # # May you do good and not evil. # May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # # Test that it is possible to have two open blob handles on a single # blob object. # # $Id: incrblob2.test,v 1.7 2008/06/26 18:04:03 danielk1977 Exp $ # set testdir [file dirname $argv0] source $testdir/tester.tcl ifcapable {!autovacuum || !pragma || !incrblob} { finish_test return } do_test incrblob2-1.0 { execsql { CREATE TABLE blobs(id INTEGER PRIMARY KEY, data BLOB); INSERT INTO blobs VALUES(NULL, zeroblob(5000)); INSERT INTO blobs VALUES(NULL, zeroblob(5000)); INSERT INTO blobs VALUES(NULL, zeroblob(5000)); INSERT INTO blobs VALUES(NULL, zeroblob(5000)); } } {} foreach iOffset [list 0 256 4094] { do_test incrblob2-1.$iOffset.1 { set fd [db incrblob blobs data 1] puts $fd "[string repeat x $iOffset]SQLite version 3.6.0" close $fd } {} do_test incrblob2-1.$iOffset.2 { set fd1 [db incrblob blobs data 1] set fd2 [db incrblob blobs data 1] fconfigure $fd1 -buffering none fconfigure $fd2 -buffering none if {$iOffset != 0} { seek $fd2 $iOffset start seek $fd1 $iOffset start } read $fd1 6 } {SQLite} do_test incrblob2-1.$iOffset.3 { read $fd2 6 } {SQLite} do_test incrblob2-1.$iOffset.4 { seek $fd2 $iOffset start seek $fd1 $iOffset start puts -nonewline $fd2 "etiLQS" } {} do_test incrblob2-1.$iOffset.5 { seek $fd1 $iOffset start read $fd1 6 } {etiLQS} do_test incrblob2-1.$iOffset.6 { seek $fd2 $iOffset start read $fd2 6 } {etiLQS} do_test incrblob2-1.$iOffset.7 { seek $fd1 $iOffset start read $fd1 6 } {etiLQS} do_test incrblob2-1.$iOffset.8 { close $fd1 close $fd2 } {} } #-------------------------------------------------------------------------- foreach iOffset [list 0 256 4094] { do_test incrblob2-2.$iOffset.1 { set fd1 [db incrblob blobs data 1] seek $fd1 [expr $iOffset - 5000] end fconfigure $fd1 -buffering none set fd2 [db incrblob blobs data 1] seek $fd2 [expr $iOffset - 5000] end fconfigure $fd2 -buffering none puts -nonewline $fd1 "123456" } {} do_test incrblob2-2.$iOffset.2 { read $fd2 6 } {123456} do_test incrblob2-2.$iOffset.3 { close $fd1 close $fd2 } {} } do_test incrblob2-3.1 { set fd1 [db incrblob blobs data 1] fconfigure $fd1 -buffering none } {} do_test incrblob2-3.2 { execsql { INSERT INTO blobs VALUES(5, zeroblob(10240)); } } {} do_test incrblob2-3.3 { set rc [catch { read $fd1 6 } msg] list $rc $msg } {0 123456} do_test incrblob2-3.4 { close $fd1 } {} #-------------------------------------------------------------------------- # The following tests - incrblob2-4.* - test that blob handles are # invalidated at the correct times. # do_test incrblob2-4.1 { unset -nocomplain data db eval BEGIN db eval { CREATE TABLE t1(id INTEGER PRIMARY KEY, data BLOB); } for {set ii 1} {$ii < 100} {incr ii} { set data [string repeat "blob$ii" 500] db eval { INSERT INTO t1 VALUES($ii, $data) } } db eval COMMIT } {} proc aborted_handles {} { global handles set aborted {} for {set ii 1} {$ii < 100} {incr ii} { set str "blob$ii" set nByte [string length $str] set iOffset [expr $nByte * $ii * 2] set rc [catch {sqlite3_blob_read $handles($ii) $iOffset $nByte} msg] if {$rc && $msg eq "SQLITE_ABORT"} { lappend aborted $ii } else { if {$rc || $msg ne $str} { error "blob $ii: $msg" } } } set aborted } do_test incrblob2-4.2 { for {set ii 1} {$ii < 100} {incr ii} { set handles($ii) [db incrblob t1 data $ii] } aborted_handles } {} # Update row 3. This should abort handle 3 but leave all others untouched. # do_test incrblob2-4.3 { db eval {UPDATE t1 SET data = data || '' WHERE id = 3} aborted_handles } {3} # Test that a write to handle 3 also returns SQLITE_ABORT. # do_test incrblob2-4.3.1 { set rc [catch {sqlite3_blob_write $::handles(3) 10 HELLO} msg] list $rc $msg } {1 SQLITE_ABORT} # Delete row 14. This should abort handle 6 but leave all others untouched. # do_test incrblob2-4.4 { db eval {DELETE FROM t1 WHERE id = 14} aborted_handles } {3 14} # Change the rowid of row 15 to 102. Should abort handle 15. # do_test incrblob2-4.5 { db eval {UPDATE t1 SET id = 102 WHERE id = 15} aborted_handles } {3 14 15} # Clobber row 92 using INSERT OR REPLACE. # do_test incrblob2-4.6 { db eval {INSERT OR REPLACE INTO t1 VALUES(92, zeroblob(1000))} aborted_handles } {3 14 15 92} # Clobber row 65 using UPDATE OR REPLACE on row 35. This should abort # handles 35 and 65. # do_test incrblob2-4.7 { db eval {UPDATE OR REPLACE t1 SET id = 65 WHERE id = 35} aborted_handles } {3 14 15 35 65 92} # Insert a couple of new rows. This should not invalidate any handles. # do_test incrblob2-4.9 { db eval {INSERT INTO t1 SELECT NULL, data FROM t1} aborted_handles } {3 14 15 35 65 92} # Delete all rows from 1 to 25. This should abort all handles up to 25. # do_test incrblob2-4.9 { db eval {DELETE FROM t1 WHERE id >=1 AND id <= 25} aborted_handles } {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 35 65 92} # Delete the whole table (this will use sqlite3BtreeClearTable()). All handles # should now be aborted. # do_test incrblob2-4.10 { db eval {DELETE FROM t1} aborted_handles } {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99} do_test incrblob2-4.1.X { for {set ii 1} {$ii < 100} {incr ii} { close $handles($ii) } } {} #-------------------------------------------------------------------------- # The following tests - incrblob2-5.* - test that in shared cache an open # blob handle counts as a read-lock on its table. # ifcapable shared_cache { db close set ::enable_shared_cache [sqlite3_enable_shared_cache 1] do_test incrblob2-5.1 { sqlite3 db test.db sqlite3 db2 test.db execsql { INSERT INTO t1 VALUES(1, 'abcde'); } } {} do_test incrblob2-5.2 { catchsql { INSERT INTO t1 VALUES(2, 'fghij') } db2 } {0 {}} do_test incrblob2-5.3 { set blob [db incrblob t1 data 1] catchsql { INSERT INTO t1 VALUES(3, 'klmno') } db2 } {1 {database is locked}} do_test incrblob2-5.4 { close $blob execsql BEGIN db2 catchsql { INSERT INTO t1 VALUES(4, 'pqrst') } db2 } {0 {}} do_test incrblob2-5.5 { set blob [db incrblob -readonly t1 data 1] catchsql { INSERT INTO t1 VALUES(5, 'uvwxy') } db2 } {1 {database table is locked}} do_test incrblob2-5.6 { close $blob catchsql { INSERT INTO t1 VALUES(3, 'klmno') } db2 } {0 {}} db2 close db close sqlite3_enable_shared_cache $::enable_shared_cache } #-------------------------------------------------------------------------- # The following tests - incrblob2-6.* - test a specific scenario that might # be causing an error. # sqlite3 db test.db do_test incrblob2-6.1 { execsql { DELETE FROM t1; INSERT INTO t1 VALUES(1, zeroblob(100)); } set rdHandle [db incrblob -readonly t1 data 1] set wrHandle [db incrblob t1 data 1] sqlite3_blob_read $rdHandle 0 100 sqlite3_blob_write $wrHandle 0 ABCDEF close $wrHandle close $rdHandle } {} do_test incrblob2-6.2 { set rdHandle [db incrblob -readonly t1 data 1] sqlite3_blob_read $rdHandle 0 2 } {AB} do_test incrblob2-6.3 { set wrHandle [db incrblob t1 data 1] sqlite3_blob_write $wrHandle 0 ZZZZZZZZZZ sqlite3_blob_read $rdHandle 2 4 } {ZZZZ} do_test incrblob2-6.4 { close $wrHandle close $rdHandle } {} sqlite3_memory_highwater 1 do_test incrblob2-7.1 { db eval { CREATE TABLE t2(B BLOB); INSERT INTO t2 VALUES(zeroblob(10 * 1024 * 1024)); } expr {[sqlite3_memory_highwater]<(5 * 1024 * 1024)} } {1} do_test incrblob2-7.2 { set h [db incrblob t2 B 1] expr {[sqlite3_memory_highwater]<(5 * 1024 * 1024)} } {1} do_test incrblob2-7.3 { seek $h 0 end tell $h } [expr 10 * 1024 * 1024] do_test incrblob2-7.4 { expr {[sqlite3_memory_highwater]<(5 * 1024 * 1024)} } {1} do_test incrblob2-7.5 { close $h } {} #do_test incrblob2-8.5 { #execsql BEGIN #db eval {SELECT * FROM t2} { #execsql "DROP TABLE t2" #} #} {} finish_test