### Question:
FileUtils { public static String createCurrentTimeString() { return LocalDateTime.now().format(CURRENT_DATE_STRING_FORMATTER); } private  FileUtils(); static boolean copyFileFromResource(File destinationFile, String resourcePath); static boolean createDirectory(File dir); static InputStream getResourceFromJar(String path); static void purgeDirectory(File directory); static void delete(File file); static void create(File file); static String makePath(String... elements); static String createCurrentTimeString(); static String createBackupFilePath(File file);  }### Answer:
@Test public void shouldCreateCurrentTimestampString() { String currentTimeString = FileUtils.createCurrentTimeString(); assertThat(currentTimeString, matchesPattern(BACKUP_TIMESTAMP_PATTERN)); }