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Annotation of embedaddon/sqlite3/test/utf16align.test, revision 1.1

1.1     ! misho       1: # 2006 February 16
        !             2: #
        !             3: # The author disclaims copyright to this source code.  In place of
        !             4: # a legal notice, here is a blessing:
        !             5: #
        !             6: #    May you do good and not evil.
        !             7: #    May you find forgiveness for yourself and forgive others.
        !             8: #    May you share freely, never taking more than you give.
        !             9: #
        !            10: #***********************************************************************
        !            11: # 
        !            12: # This file contains code to verify that the SQLITE_UTF16_ALIGNED
        !            13: # flag passed into the sqlite3_create_collation() function insures
        !            14: # that all strings passed to that function are aligned on an even
        !            15: # byte boundary.
        !            16: #
        !            17: # $Id: utf16align.test,v 1.2 2008/11/07 03:29:34 drh Exp $
        !            18: 
        !            19: set testdir [file dirname $argv0]
        !            20: source $testdir/tester.tcl
        !            21: 
        !            22: # Skip this entire test if we do not support UTF16
        !            23: #
        !            24: ifcapable !utf16 {
        !            25:   finish_test
        !            26:   return
        !            27: }
        !            28: 
        !            29: # Create a database with a UTF16 encoding.  Put in lots of string
        !            30: # data of varying lengths.
        !            31: #
        !            32: do_test utf16align-1.0 {
        !            33:   set unaligned_string_counter 0
        !            34:   add_alignment_test_collations [sqlite3_connection_pointer db]
        !            35:   execsql {
        !            36:     PRAGMA encoding=UTF16;
        !            37:     CREATE TABLE t1(
        !            38:       id INTEGER PRIMARY KEY,
        !            39:       spacer TEXT,
        !            40:       a TEXT COLLATE utf16_aligned,
        !            41:       b TEXT COLLATE utf16_unaligned
        !            42:     );
        !            43:     INSERT INTO t1(a) VALUES("abc");
        !            44:     INSERT INTO t1(a) VALUES("defghi");
        !            45:     INSERT INTO t1(a) VALUES("jklmnopqrstuv");
        !            46:     INSERT INTO t1(a) VALUES("wxyz0123456789-");
        !            47:     UPDATE t1 SET b=a||'-'||a;
        !            48:     INSERT INTO t1(a,b) SELECT a||b, b||a FROM t1;
        !            49:     INSERT INTO t1(a,b) SELECT a||b, b||a FROM t1;
        !            50:     INSERT INTO t1(a,b) SELECT a||b, b||a FROM t1;
        !            51:     INSERT INTO t1(a,b) VALUES('one','two');
        !            52:     INSERT INTO t1(a,b) SELECT a, b FROM t1;
        !            53:     UPDATE t1 SET spacer = CASE WHEN rowid&1 THEN 'x' ELSE 'xx' END;
        !            54:     SELECT count(*) FROM t1;
        !            55:   }
        !            56: } 66
        !            57: do_test utf16align-1.1 {
        !            58:   set unaligned_string_counter
        !            59: } 0
        !            60: 
        !            61: # Creating an index that uses the unaligned collation.  We should see
        !            62: # some unaligned strings passed to the collating function.
        !            63: #
        !            64: do_test utf16align-1.2 {
        !            65:   execsql {
        !            66:     CREATE INDEX t1i1 ON t1(spacer, b);
        !            67:   }
        !            68:   # puts $unaligned_string_counter
        !            69:   expr {$unaligned_string_counter>0}
        !            70: } 1
        !            71: 
        !            72: # Create another index that uses the aligned collation.  This time
        !            73: # there should be no unaligned accesses
        !            74: #
        !            75: do_test utf16align-1.3 {
        !            76:   set unaligned_string_counter 0
        !            77:   execsql {
        !            78:     CREATE INDEX t1i2 ON t1(spacer, a);
        !            79:   }
        !            80:   expr {$unaligned_string_counter>0}
        !            81: } 0
        !            82: integrity_check utf16align-1.4
        !            83: 
        !            84: # ticket #3482
        !            85: #
        !            86: db close
        !            87: sqlite3 db :memory:
        !            88: do_test utf16align-2.1 {
        !            89:   db eval {
        !            90:     PRAGMA encoding=UTF16be;
        !            91:     SELECT hex(ltrim(x'6efcda'));
        !            92:   }
        !            93: } {6EFC}
        !            94: 
        !            95: finish_test