mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-11-23 12:06:16 +00:00
97 lines
2.6 KiB
Plaintext
97 lines
2.6 KiB
Plaintext
# 2006 February 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.
|
|
#
|
|
#***********************************************************************
|
|
#
|
|
# This file contains code to verify that the SQLITE_UTF16_ALIGNED
|
|
# flag passed into the sqlite3_create_collation() function insures
|
|
# that all strings passed to that function are aligned on an even
|
|
# byte boundary.
|
|
#
|
|
# $Id: utf16align.test,v 1.2 2008/11/07 03:29:34 drh Exp $
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
# Skip this entire test if we do not support UTF16
|
|
#
|
|
ifcapable !utf16 {
|
|
finish_test
|
|
return
|
|
}
|
|
|
|
# Create a database with a UTF16 encoding. Put in lots of string
|
|
# data of varying lengths.
|
|
#
|
|
do_test utf16align-1.0 {
|
|
set unaligned_string_counter 0
|
|
add_alignment_test_collations [sqlite3_connection_pointer db]
|
|
sqlite3_db_config db SQLITE_DBCONFIG_DQS_DML 1
|
|
execsql {
|
|
PRAGMA encoding=UTF16;
|
|
CREATE TABLE t1(
|
|
id INTEGER PRIMARY KEY,
|
|
spacer TEXT,
|
|
a TEXT COLLATE utf16_aligned,
|
|
b TEXT COLLATE utf16_unaligned
|
|
);
|
|
INSERT INTO t1(a) VALUES("abc");
|
|
INSERT INTO t1(a) VALUES("defghi");
|
|
INSERT INTO t1(a) VALUES("jklmnopqrstuv");
|
|
INSERT INTO t1(a) VALUES("wxyz0123456789-");
|
|
UPDATE t1 SET b=a||'-'||a;
|
|
INSERT INTO t1(a,b) SELECT a||b, b||a FROM t1;
|
|
INSERT INTO t1(a,b) SELECT a||b, b||a FROM t1;
|
|
INSERT INTO t1(a,b) SELECT a||b, b||a FROM t1;
|
|
INSERT INTO t1(a,b) VALUES('one','two');
|
|
INSERT INTO t1(a,b) SELECT a, b FROM t1;
|
|
UPDATE t1 SET spacer = CASE WHEN rowid&1 THEN 'x' ELSE 'xx' END;
|
|
SELECT count(*) FROM t1;
|
|
}
|
|
} 66
|
|
do_test utf16align-1.1 {
|
|
set unaligned_string_counter
|
|
} 0
|
|
|
|
# Creating an index that uses the unaligned collation. We should see
|
|
# some unaligned strings passed to the collating function.
|
|
#
|
|
do_test utf16align-1.2 {
|
|
execsql {
|
|
CREATE INDEX t1i1 ON t1(spacer, b);
|
|
}
|
|
# puts $unaligned_string_counter
|
|
expr {$unaligned_string_counter>0}
|
|
} 1
|
|
|
|
# Create another index that uses the aligned collation. This time
|
|
# there should be no unaligned accesses
|
|
#
|
|
do_test utf16align-1.3 {
|
|
set unaligned_string_counter 0
|
|
execsql {
|
|
CREATE INDEX t1i2 ON t1(spacer, a);
|
|
}
|
|
expr {$unaligned_string_counter>0}
|
|
} 0
|
|
integrity_check utf16align-1.4
|
|
|
|
# ticket #3482
|
|
#
|
|
db close
|
|
sqlite3 db :memory:
|
|
do_test utf16align-2.1 {
|
|
db eval {
|
|
PRAGMA encoding=UTF16be;
|
|
SELECT hex(ltrim(x'6efcda'));
|
|
}
|
|
} {6EFC}
|
|
|
|
finish_test
|