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