libc/test/src/unistd/chdir_test.cpp

   1 //===-- Unittests for chdir -----------------------------------------------===//
   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/errno/libc_errno.h"
  10 #include "src/fcntl/open.h"
  11 #include "src/unistd/chdir.h"
  12 #include "src/unistd/close.h"
  13 #include "test/UnitTest/ErrnoSetterMatcher.h"
  14 #include "test/UnitTest/Test.h"
  15
  16 #include "hdr/fcntl_macros.h"
  17
  18 TEST(LlvmLibcChdirTest, ChangeAndOpen) {
  19   // The idea of this test is that we will first open an existing test file
  20   // without changing the directory to make sure it exists. Next, we change
  21   // directory and open the same file to make sure that the "chdir" operation
  22   // succeeded.
  23   using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
  24   constexpr const char *FILENAME = "testdata";
  25   auto TEST_DIR = libc_make_test_file_path(FILENAME);
  26   constexpr const char *FILENAME2 = "testdata/chdir.test";
  27   auto TEST_FILE = libc_make_test_file_path(FILENAME2);
  28   constexpr const char *FILENAME3 = "chdir.test";
  29   auto TEST_FILE_BASE = libc_make_test_file_path(FILENAME3);
  30   LIBC_NAMESPACE::libc_errno = 0;
  31
  32   int fd = LIBC_NAMESPACE::open(TEST_FILE, O_PATH);
  33   ASSERT_GT(fd, 0);
  34   ASSERT_ERRNO_SUCCESS();
  35   ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
  36
  37   ASSERT_THAT(LIBC_NAMESPACE::chdir(TEST_DIR), Succeeds(0));
  38   fd = LIBC_NAMESPACE::open(TEST_FILE_BASE, O_PATH);
  39   ASSERT_GT(fd, 0);
  40   ASSERT_ERRNO_SUCCESS();
  41   ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
  42 }
  43
  44 TEST(LlvmLibcChdirTest, ChangeToNonExistentDir) {
  45   LIBC_NAMESPACE::libc_errno = 0;
  46   using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
  47   ASSERT_THAT(LIBC_NAMESPACE::chdir("non-existent-dir"), Fails(ENOENT));
  48   LIBC_NAMESPACE::libc_errno = 0;
  49 }