Method test_link

Lib/test/test_os/test_posix.py:2407–2443

(self)

                os.chown("file", 0, 0, dir_fd=0)

    def test_link(self):
        self._verify_available("HAVE_LINKAT")
        if self.mac_ver >= (10, 10):
            self.assertIn("HAVE_LINKAT", posix._have_functions)

        else:
            self.assertNotIn("HAVE_LINKAT", posix._have_functions)

            with self.assertRaisesRegex(NotImplementedError, "src_dir_fd unavailable"):
                os.link("source", "target",  src_dir_fd=0)

            with self.assertRaisesRegex(NotImplementedError, "dst_dir_fd unavailable"):
                os.link("source", "target",  dst_dir_fd=0)

            with self.assertRaisesRegex(NotImplementedError, "src_dir_fd unavailable"):
                os.link("source", "target",  src_dir_fd=0, dst_dir_fd=0)

            # issue 41355: !HAVE_LINKAT code path ignores the follow_symlinks flag
            with os_helper.temp_dir() as base_path:
                link_path = os.path.join(base_path, "link")
                target_path = os.path.join(base_path, "target")
                source_path = os.path.join(base_path, "source")

                with open(source_path, "w") as fp:
                    fp.write("data")

                os.symlink("target", link_path)

                # Calling os.link should fail in the link(2) call, and
                # should not reject *follow_symlinks* (to match the
                # behaviour you'd get when building on a platform without
                # linkat)
                with self.assertRaises(FileExistsError):
                    os.link(source_path, link_path, follow_symlinks=True)

                with self.assertRaises(FileExistsError):
                    os.link(source_path, link_path, follow_symlinks=False)


    def test_listdir_scandir(self):