1 /*
   2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #include "precompiled.hpp"
  25 #include "utilities/utf8.hpp"
  26 #include "unittest.hpp"
  27 
  28 TEST(utf8, length) {
  29   char res[60];
  30   jchar str[20];
  31 
  32   for (int i = 0; i < 20; i++) {
  33     str[i] = 0x0800; // char that is 2B in UTF-16 but 3B in UTF-8
  34   }
  35   str[19] = (jchar) '\0';
  36 
  37   // The resulting string in UTF-8 is 3*19 bytes long, but should be truncated
  38   UNICODE::as_utf8(str, 19, res, 10);
  39   ASSERT_EQ(strlen(res), (size_t) 9) << "string should be truncated here";
  40 
  41   UNICODE::as_utf8(str, 19, res, 18);
  42   ASSERT_EQ(strlen(res), (size_t) 15) << "string should be truncated here";
  43 
  44   UNICODE::as_utf8(str, 19, res, 20);
  45   ASSERT_EQ(strlen(res), (size_t) 18) << "string should be truncated here";
  46 
  47   // Test with an "unbounded" buffer
  48   UNICODE::as_utf8(str, 19, res, INT_MAX);
  49   ASSERT_EQ(strlen(res), (size_t) 3 * 19) << "string should end here";
  50 }