Method testUnlink

core/src/test/java/io/questdb/test/FilesTest.java:1384–1424

()

    }

    @Test
    public void testUnlink() throws Exception {
        Assume.assumeTrue(Os.type != Os.WINDOWS);
        assertMemoryLeak(() -> {
            File tmpFolder = temporaryFolder.newFolder("unlink");
            final String fileName = "いくつかの列.d";
            final String fileContent = "**unlink** deletes a name from the filesystem." + EOL +
                    "If the name IS a symbolic link, the link is removed." + EOL +
                    "If the name is the last link to the file, and no processes have" + EOL +
                    "the file open, the file is deleted and the space it was using is " + EOL +
                    "made available for reuse. Otherwise, if any process maintains the" + EOL +
                    "file open, it will remain in existence until the last file descriptor" + EOL +
                    "referring to it is closed." + EOL;

            try (
                    Path srcPath = new Path().of(tmpFolder.getAbsolutePath());
                    Path coldRoot = new Path().of(srcPath).concat("S3").slash(); // does not exist yet
                    Path linkPath = new Path().of(coldRoot).concat(fileName).put(TableUtils.ATTACHABLE_DIR_MARKER)
            ) {
                createTempFile(srcPath, fileName, fileContent); // updates srcFilePath

                // create the soft link
                createSoftLink(coldRoot, srcPath, linkPath);

                // check contents are the same
                assertEqualsFileContent(linkPath, fileContent);

                // unlink soft link
                Assert.assertEquals(0, Files.unlink(linkPath.$()));

                // check original file still exists and contents are the same
                assertEqualsFileContent(srcPath, fileContent);

                // however the link no longer exists
                File link = new File(linkPath.toString());
                Assert.assertFalse(link.exists());
                Assert.assertFalse(link.canRead());
                Assert.assertEquals(-1, Files.openRO(linkPath.$()));
            }
        });
    }

    @Test
    public void testWriteFails() throws Exception {