1 /*
2 * Copyright (c) 2025 Tenstorrent AI ULC
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6 #include <errno.h>
7 #include <stdlib.h>
8
9 #include <zephyr/ztest.h>
10
ZTEST(xsi_single_process,test_putenv)11 ZTEST(xsi_single_process, test_putenv)
12 {
13 char buf[64];
14
15 {
16 /* degenerate cases */
17 static const char *const cases[] = {
18 NULL, "", "=", "abc", "42", "=abc",
19 /*
20 * Note:
21 * There are many poorly-formatted environment variable names and values
22 * that are invalid (from the perspective of a POSIX shell), but still
23 * accepted by setenv() and subsequently putenv().
24 *
25 * See also tests/posix/single_process/src/env.c
26 * See also lib/posix/shell/env.c:101
27 */
28 };
29
30 ARRAY_FOR_EACH(cases, i) {
31 char *s;
32
33 if (cases[i] == NULL) {
34 s = NULL;
35 } else {
36 strncpy(buf, cases[i], sizeof(buf));
37 buf[sizeof(buf) - 1] = '\0';
38 s = buf;
39 }
40
41 errno = 0;
42 zexpect_equal(-1, putenv(s), "putenv(%s) unexpectedly succeeded", s);
43 zexpect_not_equal(0, errno, "putenv(%s) did not set errno", s);
44 }
45 }
46
47 {
48 /* valid cases */
49 static const char *const cases[] = {
50 "FOO=bar",
51 };
52
53 ARRAY_FOR_EACH(cases, i) {
54 strncpy(buf, cases[i], sizeof(buf));
55 buf[sizeof(buf) - 1] = '\0';
56
57 zexpect_ok(putenv(buf), "putenv(%s) failed: %d", buf, errno);
58 }
59 }
60 }
61
