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tests: posix: common: add a test for confstr()

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Add a test for confstr(), which is required by the
POSIX_SINGLE_PROCESS Option Group, as per IEEE
1003.1-2017.

Signed-off-by: Christopher Friedt <cfriedt@meta.com>
This commit is contained in:
Christopher Friedt 2024-03-15 03:59:45 -04:00 committed by Alberto Escolar
parent c9edda0fbf
commit b30b4bcfd5
2 changed files with 69 additions and 0 deletions
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2
tests/posix/common/CMakeLists.txt
View file

@ -8,3 +8,5 @@ FILE(GLOB app_sources src/*.c)
zephyr_include_directories(${ZEPHYR_BASE}/lib/posix)
target_sources(app PRIVATE ${app_sources})
target_compile_options(app PRIVATE -U_POSIX_C_SOURCE -D_POSIX_C_SOURCE=200809L)

67
tests/posix/common/src/confstr.c Normal file
View file

@ -0,0 +1,67 @@
/*
* Copyright (c) 2024, Meta
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <errno.h>
#include <unistd.h>
#include <zephyr/ztest.h>
#include <zephyr/sys/util.h>
ZTEST(confstr, test_confstr)
{
char buf[1];
/* degenerate cases */
{
struct arg {
int name;
char *buf;
size_t len;
};
const struct arg arg1s[] = {
{-1, NULL, 0},
{-1, NULL, sizeof(buf)},
{-1, buf, 0},
{-1, buf, sizeof(buf)},
};
const struct arg arg2s[] = {
{_CS_PATH, NULL, 0},
{_CS_PATH, buf, 0},
};
const struct arg arg3s[] = {
{_CS_PATH, NULL, sizeof(buf)},
};
ARRAY_FOR_EACH_PTR(arg1s, arg) {
errno = 0;
zassert_equal(0, confstr(arg->name, arg->buf, arg->len));
zassert_equal(errno, EINVAL);
}
ARRAY_FOR_EACH_PTR(arg2s, arg) {
errno = 0;
buf[0] = 0xff;
zassert_true(confstr(arg->name, arg->buf, arg->len) > 0);
zassert_equal(errno, 0);
zassert_equal((uint8_t)buf[0], 0xff);
}
ARRAY_FOR_EACH_PTR(arg3s, arg) {
errno = 0;
zassert_true(confstr(arg->name, arg->buf, arg->len) > 0);
zassert_equal(errno, 0);
}
}
buf[0] = 0xff;
zassert_true(confstr(_CS_PATH, buf, sizeof(buf) > 0));
zassert_equal(buf[0], '\0');
}
ZTEST_SUITE(confstr, NULL, NULL, NULL, NULL, NULL);