104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/* Test of host and network byte order conversion functions.
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Copyright (C) 2024-2025 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by the Free Software Foundation, either version 3 of the License,
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or (at your option) any later version.
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This file 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Collin Funk <collin.funk1@gmail.com>, 2024. */
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#include <config.h>
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/* Specification. */
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#include <arpa/inet.h>
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#include <endian.h>
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#include <stdint.h>
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#include "macros.h"
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/* Test byte order conversion functions with constant values. */
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static void
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test_convert_constant (void)
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{
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#if BYTE_ORDER == BIG_ENDIAN
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/* 16-bit. */
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ASSERT (htons (UINT16_C (0x1234)) == UINT16_C (0x1234));
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ASSERT (ntohs (UINT16_C (0x1234)) == UINT16_C (0x1234));
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/* 32-bit. */
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ASSERT (htonl (UINT32_C (0x12345678)) == UINT32_C (0x12345678));
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ASSERT (ntohl (UINT32_C (0x12345678)) == UINT32_C (0x12345678));
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#else
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/* 16-bit. */
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ASSERT (htons (UINT16_C (0x1234)) == UINT16_C (0x3412));
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ASSERT (ntohs (UINT16_C (0x1234)) == UINT16_C (0x3412));
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/* 32-bit. */
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ASSERT (htonl (UINT32_C (0x12345678)) == UINT32_C (0x78563412));
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ASSERT (ntohl (UINT32_C (0x12345678)) == UINT32_C (0x78563412));
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#endif
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}
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/* Test that the byte order conversion functions evaluate their
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arguments once. */
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static void
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test_convert_eval_once (void)
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{
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/* 16-bit. */
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{
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uint16_t value = 0;
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ASSERT (htons (value++) == 0);
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ASSERT (value == 1);
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}
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{
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uint16_t value = 0;
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ASSERT (ntohs (value++) == 0);
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ASSERT (value == 1);
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}
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/* 32-bit. */
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{
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uint32_t value = 0;
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ASSERT (htonl (value++) == 0);
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ASSERT (value == 1);
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}
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{
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uint32_t value = 0;
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ASSERT (ntohl (value++) == 0);
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ASSERT (value == 1);
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}
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}
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/* Test that the byte order conversion functions accept floating-point
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arguments. */
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static void
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test_convert_double (void)
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{
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/* 16-bit. */
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ASSERT (htons (0.0) == 0);
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ASSERT (ntohs (0.0) == 0);
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/* 32-bit. */
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ASSERT (htonl (0.0) == 0);
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ASSERT (ntohs (0.0) == 0);
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}
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int
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main (void)
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{
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test_convert_constant ();
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test_convert_eval_once ();
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test_convert_double ();
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return test_exit_status;
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}
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