# 2007 April 25

 #

 # 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.

 #

 #***********************************************************************

 # This file contains additional out-of-memory checks (see malloc.tcl)

 # added to expose a bug in out-of-memory handling for sqlite3_value_text()

 #

 # $Id: malloc8.test,v 1.7 2008/02/18 22:24:58 drh Exp $

 set testdir [file dirname $argv0]

 source $testdir/tester.tcl

 source $testdir/malloc_common.tcl

 # Only run these tests if memory debugging is turned on.

 #

 if {!$MEMDEBUG} {

    puts "Skipping malloc8 tests: not compiled with -DSQLITE_MEMDEBUG..."

    finish_test

    return

 }

 # The setup is a database with UTF-16 encoding that contains a single

 # large string.  We will be running lots of queries against this 

 # database.  Because we will be extracting the string as UTF-8, there

 # is a type conversion that occurs and thus an opportunity for malloc()

 # to fail and for sqlite3_value_text() to return 0 even though

 # sqlite3_value_type() returns SQLITE_TEXT.

 #

 do_malloc_test malloc8-1 -sqlprep {

   PRAGMA encoding='UTF-16';

   CREATE TABLE t1(a);

   INSERT INTO t1 

   VALUES('0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ');

 } -sqlbody {

   SELECT lower(a), upper(a), quote(a), trim(a), trim('x',a) FROM t1;

 }

 do_malloc_test malloc8-2 -sqlprep {

   PRAGMA encoding='UTF-16';

   CREATE TABLE t1(a);

   INSERT INTO t1 

   VALUES('0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ');

 } -sqlbody {

   SELECT replace(a,'x','y'), replace('x',a,'y'), replace('x','y',a)

     FROM t1;

 }

 do_malloc_test malloc8-3 -sqlprep {

   PRAGMA encoding='UTF-16';

   CREATE TABLE t1(a);

   INSERT INTO t1 

   VALUES('0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ');

 } -sqlbody {

   SELECT length(a), substr(a, 4, 4) FROM t1;

 }

 ifcapable datetime {

   do_malloc_test malloc8-4 -sqlprep {

     PRAGMA encoding='UTF-16';

     CREATE TABLE t1(a);

     INSERT INTO t1 

     VALUES('0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ');

   } -sqlbody {

     SELECT julianday(a,a) FROM t1;

   }

 }

 do_malloc_test malloc8-5 -sqlprep {

   PRAGMA encoding='UTF-16';

   CREATE TABLE t1(a);

   INSERT INTO t1 

   VALUES('0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ');

 } -sqlbody {

   SELECT 1 FROM t1 WHERE a LIKE 'hello' ESCAPE NULL;

 }

 do_malloc_test malloc8-6 -sqlprep {

   PRAGMA encoding='UTF-16';

   CREATE TABLE t1(a);

   INSERT INTO t1 

   VALUES('0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ');

 } -sqlbody {

   SELECT hex(randomblob(100));

 }

 # Ensure that no file descriptors were leaked.

 do_test malloc-99.X {

   catch {db close}

   set sqlite_open_file_count

 } {0}

 finish_test