libc/test/src/sys/stat/stat_test.cpp

   1 //===-- Unittests for stat ------------------------------------------------===//
   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/sys/stat/stat.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 "hdr/fcntl_macros.h"
  18 #include <sys/stat.h>
  19
  20 TEST(LlvmLibcStatTest, CreatAndReadMode) {
  21   using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
  22   using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
  23
  24   // The test file is initially writable. We open it for writing and ensure
  25   // that it indeed can be opened for writing. Next, we close the file and
  26   // make it readonly using chmod. We test that chmod actually succeeded by
  27   // trying to open the file for writing and failing.
  28   constexpr const char *TEST_FILE = "testdata/stat.test";
  29   LIBC_NAMESPACE::libc_errno = 0;
  30
  31   int fd = LIBC_NAMESPACE::open(TEST_FILE, O_CREAT | O_WRONLY, S_IRWXU);
  32   ASSERT_GT(fd, 0);
  33   ASSERT_ERRNO_SUCCESS();
  34   ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
  35
  36   struct stat statbuf;
  37   ASSERT_THAT(LIBC_NAMESPACE::stat(TEST_FILE, &statbuf), Succeeds(0));
  38
  39   ASSERT_EQ(int(statbuf.st_mode), int(S_IRWXU | S_IFREG));
  40
  41   ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE), Succeeds(0));
  42 }
  43
  44 TEST(LlvmLibcStatTest, NonExistentFile) {
  45   LIBC_NAMESPACE::libc_errno = 0;
  46   using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
  47   struct stat statbuf;
  48   ASSERT_THAT(LIBC_NAMESPACE::stat("non-existent-file", &statbuf),
  49               Fails(ENOENT));
  50   LIBC_NAMESPACE::libc_errno = 0;
  51 }