diff options
Diffstat (limited to 'libhw_generic/tests/test_io.c')
| -rw-r--r-- | libhw_generic/tests/test_io.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/libhw_generic/tests/test_io.c b/libhw_generic/tests/test_io.c new file mode 100644 index 0000000..0d6df11 --- /dev/null +++ b/libhw_generic/tests/test_io.c @@ -0,0 +1,57 @@ +/* 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; +} |