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Diffstat (limited to 'test/utf16align.test')
| -rw-r--r-- | test/utf16align.test | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/test/utf16align.test b/test/utf16align.test new file mode 100644 index 0000000..f026d95 --- /dev/null +++ b/test/utf16align.test @@ -0,0 +1,95 @@ +# 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] + 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 |