1//===-- Unittests for getcwd ----------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "src/__support/CPP/string_view.h"
10#include "src/__support/libc_errno.h"
11#include "src/stdlib/getenv.h"
12#include "src/unistd/getcwd.h"
13
14#include "test/IntegrationTest/test.h"
15
16#include <stdlib.h> // For malloc and free
17
18using LIBC_NAMESPACE::cpp::string_view;
19
20TEST_MAIN(int argc, char **argv, char **envp) {
21 char buffer[1024];
22 ASSERT_TRUE(string_view(LIBC_NAMESPACE::getenv("PWD")) ==
23 LIBC_NAMESPACE::getcwd(buffer, 1024));
24
25 // nullptr buffer
26 char *cwd = LIBC_NAMESPACE::getcwd(nullptr, 0);
27 ASSERT_TRUE(string_view(LIBC_NAMESPACE::getenv("PWD")) == cwd);
28 free(ptr: cwd);
29
30 // Bad size
31 cwd = LIBC_NAMESPACE::getcwd(buffer, 0);
32 ASSERT_TRUE(cwd == nullptr);
33 ASSERT_ERRNO_EQ(EINVAL);
34 libc_errno = 0;
35
36 // Insufficient size
37 cwd = LIBC_NAMESPACE::getcwd(buffer, 2);
38 ASSERT_TRUE(cwd == nullptr);
39 int err = libc_errno;
40 ASSERT_EQ(err, ERANGE);
41
42 return 0;
43}
44

source code of libc/test/integration/src/unistd/getcwd_test.cpp