68 lines
1.6 KiB
Plaintext
68 lines
1.6 KiB
Plaintext
# 2022 August 28
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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source [file join [file dirname [info script]] recover_common.tcl]
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set testprefix recovercorrupt
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database_may_be_corrupt
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do_execsql_test 1.0 {
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PRAGMA page_size = 512;
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CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c);
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INSERT INTO t1 VALUES(1, 2, 3);
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INSERT INTO t1 VALUES(2, hex(randomblob(100)), randomblob(200));
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CREATE INDEX i1 ON t1(b, c);
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CREATE TABLE t2(a PRIMARY KEY, b, c) WITHOUT ROWID;
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INSERT INTO t2 VALUES(1, 2, 3);
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INSERT INTO t2 VALUES(2, hex(randomblob(100)), randomblob(200));
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ANALYZE;
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PRAGMA writable_schema = 1;
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DELETE FROM sqlite_schema WHERE name='t2';
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}
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do_test 1.1 {
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expr [file size test.db]>3072
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} {1}
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proc toggle_bit {blob bit} {
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set byte [expr {$bit / 8}]
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set bit [expr {$bit & 0x0F}]
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binary scan $blob a${byte}ca* A x B
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set x [expr {$x ^ (1 << $bit)}]
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binary format a*ca* $A $x $B
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}
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db_save_and_close
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for {set ii 0} {$ii < 10000} {incr ii} {
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db_restore_and_reopen
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db func toggle_bit toggle_bit
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set bitsperpage [expr 512*8]
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set pg [expr {($ii / $bitsperpage)+1}]
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set byte [expr {$ii % $bitsperpage}]
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db eval {
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UPDATE sqlite_dbpage SET data = toggle_bit(data, $byte) WHERE pgno=$pg
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}
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set R [sqlite3_recover_init db main test.db2]
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$R config lostandfound lost_and_found
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$R run
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do_test 1.2.$ii {
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$R finish
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} {}
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}
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finish_test
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