| //===-- Unittests for link ------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "src/errno/libc_errno.h" |
| #include "src/fcntl/open.h" |
| #include "src/unistd/close.h" |
| #include "src/unistd/link.h" |
| #include "src/unistd/unlink.h" |
| #include "test/UnitTest/ErrnoSetterMatcher.h" |
| #include "test/UnitTest/Test.h" |
| |
| TEST(LlvmLibcLinkTest, CreateAndUnlink) { |
| using __llvm_libc::testing::ErrnoSetterMatcher::Succeeds; |
| constexpr const char *TEST_FILE = "testdata/link.test"; |
| constexpr const char *TEST_FILE_LINK = "testdata/link.test.link"; |
| |
| // The test strategy is as follows: |
| // 1. Create a normal file |
| // 2. Create a link to that file. |
| // 3. Open the link to check that the link was created. |
| // 4. Cleanup the file and its link. |
| libc_errno = 0; |
| int write_fd = __llvm_libc::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU); |
| ASSERT_EQ(libc_errno, 0); |
| ASSERT_GT(write_fd, 0); |
| ASSERT_THAT(__llvm_libc::close(write_fd), Succeeds(0)); |
| ASSERT_THAT(__llvm_libc::link(TEST_FILE, TEST_FILE_LINK), Succeeds(0)); |
| |
| int link_fd = __llvm_libc::open(TEST_FILE_LINK, O_PATH); |
| ASSERT_GT(link_fd, 0); |
| ASSERT_EQ(libc_errno, 0); |
| ASSERT_THAT(__llvm_libc::close(link_fd), Succeeds(0)); |
| |
| ASSERT_THAT(__llvm_libc::unlink(TEST_FILE), Succeeds(0)); |
| ASSERT_THAT(__llvm_libc::unlink(TEST_FILE_LINK), Succeeds(0)); |
| } |
| |
| TEST(LlvmLibcLinkTest, LinkToNonExistentFile) { |
| using __llvm_libc::testing::ErrnoSetterMatcher::Fails; |
| ASSERT_THAT( |
| __llvm_libc::link("testdata/non-existent-file", "testdata/bad-link"), |
| Fails(ENOENT)); |
| } |