libc/test/src/stdio/remove_test.cpp

   1 //===-- Unittests for remove ----------------------------------------------===//
   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/stdio/remove.h"
  11 #include "src/sys/stat/mkdirat.h"
  12 #include "src/unistd/access.h"
  13 #include "src/unistd/close.h"
  14 #include "test/ErrnoSetterMatcher.h"
  15 #include "test/UnitTest/Test.h"
  16 #include "utils/testutils/FDReader.h"
  17
  18 #include <errno.h>
  19 #include <unistd.h>
  20
  21 TEST(LlvmLibcRemoveTest, CreateAndRemoveFile) {
  22   // The test strategy is to create a file and remove it, and also verify that
  23   // it was removed.
  24   errno = 0;
  25   using __llvm_libc::testing::ErrnoSetterMatcher::Fails;
  26   using __llvm_libc::testing::ErrnoSetterMatcher::Succeeds;
  27   constexpr const char *TEST_FILE = "testdata/remove.test.file";
  28   int fd = __llvm_libc::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU);
  29   ASSERT_EQ(errno, 0);
  30   ASSERT_GT(fd, 0);
  31   ASSERT_THAT(__llvm_libc::close(fd), Succeeds(0));
  32
  33   ASSERT_THAT(__llvm_libc::access(TEST_FILE, F_OK), Succeeds(0));
  34   ASSERT_THAT(__llvm_libc::remove(TEST_FILE), Succeeds(0));
  35   ASSERT_THAT(__llvm_libc::access(TEST_FILE, F_OK), Fails(ENOENT));
  36 }
  37
  38 TEST(LlvmLibcRemoveTest, CreateAndRemoveDir) {
  39   // The test strategy is to create a dir and remove it, and also verify that
  40   // it was removed.
  41   errno = 0;
  42   using __llvm_libc::testing::ErrnoSetterMatcher::Fails;
  43   using __llvm_libc::testing::ErrnoSetterMatcher::Succeeds;
  44   constexpr const char *TEST_DIR = "testdata/remove.test.dir";
  45   ASSERT_THAT(__llvm_libc::mkdirat(AT_FDCWD, TEST_DIR, S_IRWXU), Succeeds(0));
  46
  47   ASSERT_THAT(__llvm_libc::access(TEST_DIR, F_OK), Succeeds(0));
  48   ASSERT_THAT(__llvm_libc::remove(TEST_DIR), Succeeds(0));
  49   ASSERT_THAT(__llvm_libc::access(TEST_DIR, F_OK), Fails(ENOENT));
  50 }
  51
  52 TEST(LlvmLibcRemoveTest, RemoveNonExistent) {
  53   using __llvm_libc::testing::ErrnoSetterMatcher::Fails;
  54   ASSERT_THAT(__llvm_libc::remove("testdata/non-existent"), Fails(ENOENT));
  55 }