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/fcntl/open.h"
  10 #include "src/unistd/access.h"
  11 #include "src/unistd/close.h"
  12 #include "src/unistd/unlink.h"
  13 #include "test/ErrnoSetterMatcher.h"
  14 #include "test/UnitTest/Test.h"
  15 #include "utils/testutils/FDReader.h"
  16
  17 #include <errno.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   errno = 0;
  24   using __llvm_libc::testing::ErrnoSetterMatcher::Succeeds;
  25   constexpr const char *TEST_FILE = "testdata/access.test";
  26   int fd = __llvm_libc::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU);
  27   ASSERT_EQ(errno, 0);
  28   ASSERT_GT(fd, 0);
  29   ASSERT_THAT(__llvm_libc::close(fd), Succeeds(0));
  30
  31   ASSERT_EQ(__llvm_libc::access(TEST_FILE, F_OK), 0);
  32   ASSERT_EQ(errno, 0);
  33   ASSERT_EQ(__llvm_libc::access(TEST_FILE, X_OK | W_OK | R_OK), 0);
  34   ASSERT_EQ(errno, 0);
  35   ASSERT_THAT(__llvm_libc::unlink(TEST_FILE), Succeeds(0));
  36
  37   fd = __llvm_libc::open(TEST_FILE, O_WRONLY | O_CREAT, S_IXUSR);
  38   ASSERT_EQ(errno, 0);
  39   ASSERT_GT(fd, 0);
  40   ASSERT_THAT(__llvm_libc::close(fd), Succeeds(0));
  41   ASSERT_EQ(__llvm_libc::access(TEST_FILE, F_OK), 0);
  42   ASSERT_EQ(errno, 0);
  43   ASSERT_EQ(__llvm_libc::access(TEST_FILE, X_OK), 0);
  44   ASSERT_EQ(errno, 0);
  45   ASSERT_EQ(__llvm_libc::access(TEST_FILE, R_OK), -1);
  46   ASSERT_EQ(errno, EACCES);
  47   errno = 0;
  48   ASSERT_EQ(__llvm_libc::access(TEST_FILE, W_OK), -1);
  49   ASSERT_EQ(errno, EACCES);
  50   errno = 0;
  51   ASSERT_THAT(__llvm_libc::unlink(TEST_FILE), Succeeds(0));
  52 }
  53
  54 TEST(LlvmLibcAccessTest, AccessNonExistentFile) {
  55   using __llvm_libc::testing::ErrnoSetterMatcher::Fails;
  56   ASSERT_THAT(__llvm_libc::access("testdata/non-existent-file", F_OK),
  57               Fails(ENOENT));
  58 }