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79 lines
2.9 KiB
C
79 lines
2.9 KiB
C
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/* Test the wcslcpy function.
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Copyright (C) 2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <array_length.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <support/check.h>
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#include <wchar.h>
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static int
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do_test (void)
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{
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struct {
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wchar_t buf1[16];
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wchar_t buf2[16];
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} s;
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/* Nothing is written to the destination if its size is 0. */
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wmemset (s.buf1, '@', array_length (s.buf1));
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wmemset (s.buf2, '@', array_length (s.buf2));
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TEST_COMPARE (wcslcpy (s.buf1, L"Hello!", 0), 6);
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TEST_COMPARE_BLOB (&s, sizeof (s), L"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
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/* No bytes are are modified in the target buffer if the source
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string is short enough. */
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wmemset (s.buf1, '@', array_length (s.buf1));
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wmemset (s.buf2, '@', array_length (s.buf2));
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TEST_COMPARE (wcslcpy (s.buf1, L"Hello!", array_length (s.buf1)), 6);
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TEST_COMPARE_BLOB (&s, sizeof (s),
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L"Hello!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
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/* A source string which fits exactly into the destination buffer is
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not truncated. */
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wmemset (s.buf1, '@', array_length (s.buf1));
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wmemset (s.buf2, '@', array_length (s.buf2));
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TEST_COMPARE (wcslcpy (s.buf1, L"Hello, world!!!", array_length (s.buf1)),
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15);
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TEST_COMPARE_BLOB (&s, sizeof (s),
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L"Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
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/* A source string one character longer than the destination buffer
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is truncated by one character. The untruncated source length is
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returned. */
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wmemset (s.buf1, '@', array_length (s.buf1));
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wmemset (s.buf2, '@', array_length (s.buf2));
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TEST_COMPARE (wcslcpy (s.buf1, L"Hello, world!!!!", array_length (s.buf1)),
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16);
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TEST_COMPARE_BLOB (&s, sizeof (s),
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L"Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
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/* An even longer source string is truncated as well, and the
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original length is returned. */
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wmemset (s.buf1, '@', array_length (s.buf1));
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wmemset (s.buf2, '@', array_length (s.buf2));
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TEST_COMPARE (wcslcpy (s.buf1, L"Hello, world!!!!!!!!",
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array_length (s.buf1)), 20);
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TEST_COMPARE_BLOB (&s, sizeof (s),
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L"Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
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return 0;
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}
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#include <support/test-driver.c>
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