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Diffstat (limited to 'tests/test-wmemcmp.c')
-rw-r--r-- | tests/test-wmemcmp.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/tests/test-wmemcmp.c b/tests/test-wmemcmp.c new file mode 100644 index 0000000000..998dff2653 --- /dev/null +++ b/tests/test-wmemcmp.c @@ -0,0 +1,91 @@ +/* Test of wmemcmp() function. + Copyright (C) 2008-2023 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. */ + +/* Written by Bruno Haible <bruno@clisp.org>, 2023. */ + +#include <config.h> + +#include <wchar.h> + +#include "signature.h" +SIGNATURE_CHECK (wmemcmp, int, (const wchar_t *, const wchar_t *, size_t)); + +#include "macros.h" + +int +main (int argc, char *argv[]) +{ + /* Test equal / not equal distinction. */ + { + static const wchar_t input1[] = { 'f', 'o', 'o', 0 }; + static const wchar_t input2[] = { 'f', 'o', 'o', 'b', 'a', 'r', 0 }; + ASSERT (wmemcmp (input1, input2, 2) == 0); + ASSERT (wmemcmp (input1, input2, 3) == 0); + ASSERT (wmemcmp (input1, input2, 4) != 0); + } + { + static const wchar_t input1[] = { 'f', 'o', 'o', 0 }; + static const wchar_t input2[] = { 'b', 'a', 'r', 0 }; + ASSERT (wmemcmp (input1, input2, 1) != 0); + ASSERT (wmemcmp (input1, input2, 3) != 0); + } + + /* Test less / equal / greater distinction. */ + { + static const wchar_t input1[] = { 'f', 'o', 'o', 0 }; + static const wchar_t input2[] = { 'm', 'o', 'o', 0 }; + ASSERT (wmemcmp (input1, input2, 4) < 0); + ASSERT (wmemcmp (input2, input1, 4) > 0); + } + { + static const wchar_t input1[] = { 'o', 'o', 'm', 'p', 'h', 0 }; + static const wchar_t input2[] = { 'o', 'o', 'p', 's', 0 }; + ASSERT (wmemcmp (input1, input2, 3) < 0); + ASSERT (wmemcmp (input2, input1, 3) > 0); + } + { + static const wchar_t input1[] = { 'f', 'o', 'o', 0 }; + static const wchar_t input2[] = { 'f', 'o', 'o', 'b', 'a', 'r', 0 }; + ASSERT (wmemcmp (input1, input2, 4) < 0); + ASSERT (wmemcmp (input2, input1, 4) > 0); + } + + /* ISO C requires wmemcmp to work with all wchar_t values. */ + { + static const wchar_t input1[] = { (wchar_t) 0x76547654 }; + static const wchar_t input2[] = { (wchar_t) 0x9abc9abc }; + if ((wchar_t)-1 < 0) + { + /* wchar_t is signed. */ + ASSERT (wmemcmp (input1, input2, 1) > 0); + ASSERT (wmemcmp (input2, input1, 1) < 0); + } + else + { + /* wchar_t is unsigned. */ + ASSERT (wmemcmp (input1, input2, 1) < 0); + ASSERT (wmemcmp (input2, input1, 1) > 0); + } + } + { + static const wchar_t input1[] = { (wchar_t) 0x9abc9abc }; + static const wchar_t input2[] = { (wchar_t) 0x9bdf9bdf }; + ASSERT (wmemcmp (input1, input2, 1) < 0); + ASSERT (wmemcmp (input2, input1, 1) > 0); + } + + return 0; +} |