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48 lines
1.3 KiB
Plaintext
48 lines
1.3 KiB
Plaintext
# 2014 October 01
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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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# This file implements regression tests for SQLite library. The
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# focus of this file is testing the SQLITE_DIRECT_OVERFLOW_READ logic.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set testprefix ovfl
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# Populate table t2:
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#
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# CREATE TABLE t1(c1 TEXT, c2 TEXT);
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#
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# with 2000 rows. In each row, c2 spans multiple overflow pages. The text
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# value of c1 ranges in size from 1 to 2000 bytes. The idea is to create
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# at least one row where the first byte of c2 is also the first byte of
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# an overflow page. This was at one point exposing an obscure bug in the
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# SQLITE_DIRECT_OVERFLOW_READ logic.
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#
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do_test 1.1 {
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set c2 [string repeat abcdefghij 200]
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execsql {
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PRAGMA cache_size = 10;
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CREATE TABLE t1(c1 TEXT, c2 TEXT);
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BEGIN;
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}
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for {set i 1} {$i <= 2000} {incr i} {
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set c1 [string repeat . $i]
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execsql { INSERT INTO t1 VALUES($c1, $c2) }
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}
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execsql COMMIT
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} {}
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do_execsql_test 1.2 {
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SELECT sum(length(c2)) FROM t1;
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} [expr 2000 * 2000]
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finish_test
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