libc/test/src/unistd/access_test.cpp

   1 //===-- Unittests for access ----------------------------------------------===//
   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/access.h"
  12 #include "src/unistd/close.h"
  13 #include "src/unistd/unlink.h"
  14 #include "test/UnitTest/ErrnoSetterMatcher.h"
  15 #include "test/UnitTest/Test.h"
  16
  17 #include <sys/stat.h>
  18 #include <unistd.h>
  19
  20 TEST(LlvmLibcAccessTest, CreateAndTest) {
  21   // The test strategy is to repeatedly create a file in different modes and
  22   // test that it is accessable in those modes but not in others.
  23   LIBC_NAMESPACE::libc_errno = 0;
  24   using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
  25   constexpr const char *FILENAME = "access.test";
  26   auto TEST_FILE = libc_make_test_file_path(FILENAME);
  27   int fd = LIBC_NAMESPACE::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU);
  28   ASSERT_ERRNO_SUCCESS();
  29   ASSERT_GT(fd, 0);
  30   ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
  31
  32   ASSERT_EQ(LIBC_NAMESPACE::access(TEST_FILE, F_OK), 0);
  33   ASSERT_ERRNO_SUCCESS();
  34   ASSERT_EQ(LIBC_NAMESPACE::access(TEST_FILE, X_OK | W_OK | R_OK), 0);
  35   ASSERT_ERRNO_SUCCESS();
  36   ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE), Succeeds(0));
  37
  38   fd = LIBC_NAMESPACE::open(TEST_FILE, O_WRONLY | O_CREAT, S_IXUSR);
  39   ASSERT_ERRNO_SUCCESS();
  40   ASSERT_GT(fd, 0);
  41   ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
  42   ASSERT_EQ(LIBC_NAMESPACE::access(TEST_FILE, F_OK), 0);
  43   ASSERT_ERRNO_SUCCESS();
  44   ASSERT_EQ(LIBC_NAMESPACE::access(TEST_FILE, X_OK), 0);
  45   ASSERT_ERRNO_SUCCESS();
  46   ASSERT_EQ(LIBC_NAMESPACE::access(TEST_FILE, R_OK), -1);
  47   ASSERT_ERRNO_EQ(EACCES);
  48   LIBC_NAMESPACE::libc_errno = 0;
  49   ASSERT_EQ(LIBC_NAMESPACE::access(TEST_FILE, W_OK), -1);
  50   ASSERT_ERRNO_EQ(EACCES);
  51   LIBC_NAMESPACE::libc_errno = 0;
  52   ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE), Succeeds(0));
  53 }
  54
  55 TEST(LlvmLibcAccessTest, AccessNonExistentFile) {
  56   using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
  57   ASSERT_THAT(LIBC_NAMESPACE::access("testdata/non-existent-file", F_OK),
  58               Fails(ENOENT));
  59 }