106 lines
3.2 KiB
C++
106 lines
3.2 KiB
C++
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include "precompiled.hpp"
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#include "utilities/utf8.hpp"
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#include "unittest.hpp"
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static void stamp(char* p, size_t len) {
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if (len > 0) {
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::memset(p, 'A', len);
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}
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}
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static bool test_stamp(const char* p, size_t len) {
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for (const char* q = p; q < p + len; q++) {
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if (*q != 'A') {
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return false;
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}
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}
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return true;
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}
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TEST_VM(utf8, jchar_length) {
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char res[60];
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jchar str[20];
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for (int i = 0; i < 20; i++) {
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str[i] = 0x0800; // char that is 2B in UTF-16 but 3B in UTF-8
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}
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str[19] = (jchar) '\0';
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// The resulting string in UTF-8 is 3*19 bytes long, but should be truncated
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stamp(res, sizeof(res));
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UNICODE::as_utf8(str, 19, res, 10);
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ASSERT_EQ(strlen(res), (size_t) 9) << "string should be truncated here";
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ASSERT_TRUE(test_stamp(res + 10, sizeof(res) - 10));
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stamp(res, sizeof(res));
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UNICODE::as_utf8(str, 19, res, 18);
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ASSERT_EQ(strlen(res), (size_t) 15) << "string should be truncated here";
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ASSERT_TRUE(test_stamp(res + 18, sizeof(res) - 18));
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stamp(res, sizeof(res));
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UNICODE::as_utf8(str, 19, res, 20);
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ASSERT_EQ(strlen(res), (size_t) 18) << "string should be truncated here";
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ASSERT_TRUE(test_stamp(res + 20, sizeof(res) - 20));
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// Test with an "unbounded" buffer
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UNICODE::as_utf8(str, 19, res, INT_MAX);
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ASSERT_EQ(strlen(res), (size_t) 3 * 19) << "string should end here";
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// Test that we do not overflow the output buffer
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for (int i = 1; i < 5; i ++) {
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stamp(res, sizeof(res));
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UNICODE::as_utf8(str, 19, res, i);
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EXPECT_TRUE(test_stamp(res + i, sizeof(res) - i));
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}
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}
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TEST_VM(utf8, jbyte_length) {
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char res[60];
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jbyte str[20];
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for (int i = 0; i < 19; i++) {
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str[i] = 0x42;
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}
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str[19] = '\0';
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stamp(res, sizeof(res));
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UNICODE::as_utf8(str, 19, res, 10);
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ASSERT_EQ(strlen(res), (size_t) 9) << "string should be truncated here";
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ASSERT_TRUE(test_stamp(res + 10, sizeof(res) - 10));
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UNICODE::as_utf8(str, 19, res, INT_MAX);
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ASSERT_EQ(strlen(res), (size_t) 19) << "string should end here";
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// Test that we do not overflow the output buffer
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for (int i = 1; i < 5; i ++) {
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stamp(res, sizeof(res));
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UNICODE::as_utf8(str, 19, res, i);
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EXPECT_TRUE(test_stamp(res + i, sizeof(res) - i));
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}
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}
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