testDir = File.createTempFile("synonymtest", "_dir");
        testDir.delete();
        testDir.mkdirs();
        file1 = new File(testDir, "synonym.txt");
        FileUtil.writeBytes(file1.getAbsolutePath(), "abc=>123\nxyz,890".getBytes(Constants.UTF_8));
    }

    @Override
    public void tearDown() throws Exception {
        super.tearDown();
        FileUtils.deleteDirectory(testDir);
    }

    public void test_init() {