# 2019 May 16 # # 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. # #*********************************************************************** # # source [file join [file dirname [info script]] fts5_common.tcl] set testprefix fts5corrupt4 # If SQLITE_ENABLE_FTS5 is defined, omit this file. ifcapable !fts5 { finish_test return } sqlite3_fts5_may_be_corrupt 1 do_execsql_test 1.0 { CREATE VIRTUAL TABLE ttt USING fts5(a, b); INSERT INTO ttt VALUES('e ee eee e ee eee e ee eee', 'eee ee e e e ee eee ee ee'); INSERT INTO ttt SELECT a||a, b||b FROM ttt; INSERT INTO ttt SELECT a||a, b||b FROM ttt; } proc mutate {blob i} { set o [expr {$i % [string length $blob]}] set a [string range $blob 0 $o-1] set b [string range $blob $o+1 end] set v [expr int(rand()*255) - 127] return "$a[binary format c $v]$b" } db func mutate mutate for {set j 1000} {$j <= 5000} {incr j 1000} { do_test 1.$j { for {set i 0} {$i < 1000} {incr i} { execsql { BEGIN; UPDATE ttt_data SET block = mutate(block, $i) WHERE id>10; } foreach sql { {SELECT snippet(ttt, -1, '.', '..', '[', ']'), * FROM ttt('e*')} {SELECT snippet(ttt, -1, '.', '..', '[', ']'), * FROM ttt('e* NOT ee*')} } { catch { execsql $sql } } execsql ROLLBACK } } {} } sqlite3_fts5_may_be_corrupt 0 finish_test