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/* libhw_generic/tests/test_io.c - Tests for <libmisc/io.h>
*
* Copyright (C) 2025 Luke T. Shumaker <lukeshu@lukeshu.com>
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#include <string.h>
#include <libhw/generic/io.h>
#include "test.h"
int main() {
char data[] = "abcdefghijklmnopqrstuvwxyz";
struct iovec src[] = {
{.iov_base = &data[1], .iov_len=3}, /* "bcd" */
{.iov_base = &data[20], .iov_len=4}, /* "uvwx" */
};
const int src_cnt = sizeof(src)/sizeof(src[0]);
struct duplex_iovec dst[2];
#define TC(start, max, ...) do { \
char *exp[] = {__VA_ARGS__}; \
int exp_cnt = sizeof(exp)/sizeof(exp[0]); \
int act_cnt = io_slice_cnt(src, src_cnt, start, max); \
test_assert(act_cnt == exp_cnt); \
memset(dst, 0, sizeof(dst)); \
io_slice_wr_to_duplex(dst, src, src_cnt, start, max); \
for (int i = 0; i < act_cnt; i++) { \
test_assert(dst[i].iov_read_to == IOVEC_DISCARD); \
test_assert(dst[i].iov_write_from != IOVEC_DISCARD); \
test_assert(dst[i].iov_len == strlen(exp[i])); \
test_assert(memcmp(dst[i].iov_write_from, exp[i], dst[i].iov_len) == 0); \
} \
} while (0)
TC(0, 0, /* => */ "bcd", "uvwx");
TC(1, 0, /* => */ "cd", "uvwx");
TC(2, 0, /* => */ "d", "uvwx");
TC(3, 0, /* => */ "uvwx");
TC(4, 0, /* => */ "vwx");
TC(5, 0, /* => */ "wx");
TC(6, 0, /* => */ "x");
TC(7, 0, /* => */ );
TC(0, 2, /* => */ "bc");
TC(1, 2, /* => */ "cd");
TC(2, 2, /* => */ "d", "u");
TC(3, 2, /* => */ "uv");
TC(4, 2, /* => */ "vw");
TC(5, 2, /* => */ "wx");
TC(6, 2, /* => */ "x");
TC(7, 2, /* => */ );
return 0;
}
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