81 lines
2.3 KiB
Plaintext
81 lines
2.3 KiB
Plaintext
# 2015 Apr 24
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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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# This file tests that FTS5 handles corrupt databases (i.e. internal
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# inconsistencies in the backing tables) correctly. In this case
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# "correctly" means without crashing.
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#
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source [file join [file dirname [info script]] fts5_common.tcl]
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set testprefix fts5corrupt3
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# If SQLITE_ENABLE_FTS5 is defined, omit this file.
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ifcapable !fts5 {
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finish_test
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return
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}
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sqlite3_fts5_may_be_corrupt 1
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# Create a simple FTS5 table containing 100 documents. Each document
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# contains 10 terms, each of which start with the character "x".
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#
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expr srand(0)
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db func rnddoc fts5_rnddoc
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do_execsql_test 1.0 {
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CREATE VIRTUAL TABLE t1 USING fts5(x);
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INSERT INTO t1(t1, rank) VALUES('pgsz', 64);
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WITH ii(i) AS (SELECT 1 UNION SELECT i+1 FROM ii WHERE i<100)
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INSERT INTO t1 SELECT rnddoc(10) FROM ii;
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}
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set mask [expr 31 << 31]
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do_test 1.1 {
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# Pick out the rowid of the right-most b-tree leaf in the new segment.
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set rowid [db one {
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SELECT max(rowid) FROM t1_data WHERE ((rowid>>31) & 0x0F)==1
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}]
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set L [db one {SELECT length(block) FROM t1_data WHERE rowid = $rowid}]
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set {} {}
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} {}
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for {set i 0} {$i < $L} {incr i} {
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do_test 1.2.$i {
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catchsql {
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BEGIN;
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UPDATE t1_data SET block = substr(block, 1, $i) WHERE id = $rowid;
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INSERT INTO t1(t1) VALUES('integrity-check');
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}
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} {1 {database disk image is malformed}}
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catchsql ROLLBACK
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}
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#-------------------------------------------------------------------------
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# Test that trailing bytes appended to the averages record are ignored.
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#
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do_execsql_test 2.1 {
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CREATE VIRTUAL TABLE t2 USING fts5(x);
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INSERT INTO t2 VALUES(rnddoc(10));
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INSERT INTO t2 VALUES(rnddoc(10));
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SELECT length(block) FROM t2_data WHERE id=1;
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} {2}
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do_execsql_test 2.2 {
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UPDATE t2_data SET block = block || 'abcd' WHERE id=1;
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SELECT length(block) FROM t2_data WHERE id=1;
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} {6}
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do_execsql_test 2.2 {
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INSERT INTO t2 VALUES(rnddoc(10));
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SELECT length(block) FROM t2_data WHERE id=1;
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} {2}
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sqlite3_fts5_may_be_corrupt 0
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finish_test
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