### Question:
UtilAll { public static String currentStackTrace() { StringBuilder sb = new StringBuilder(); StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace(); for (StackTraceElement ste : stackTrace) { sb.append("\n\t"); sb.append(ste.toString()); } return sb.toString(); }  static int getPid(); static String currentStackTrace(); static String offset2FileName(final long offset); static long computeEclipseTimeMilliseconds(final long beginTime); static boolean isItTimeToDo(final String when); static String timeMillisToHumanString(); static String timeMillisToHumanString(final long t); static long computNextMorningTimeMillis(); static long computNextMinutesTimeMillis(); static long computNextHourTimeMillis(); static long computNextHalfHourTimeMillis(); static String timeMillisToHumanString2(final long t); static String timeMillisToHumanString3(final long t); static double getDiskPartitionSpaceUsedPercent(final String path); static int crc32(byte[] array); static int crc32(byte[] array, int offset, int length); static String bytes2string(byte[] src); static byte[] string2bytes(String hexString); static byte[] uncompress(final byte[] src); static byte[] compress(final byte[] src, final int level); static int asInt(String str, int defaultValue); static long asLong(String str, long defaultValue); static String formatDate(Date date, String pattern); static Date parseDate(String date, String pattern); static String responseCode2String(final int code); static String frontStringAtLeast(final String str, final int size); static boolean isBlank(String str); static String jstack(); static String jstack(Map<Thread, StackTraceElement[]> map); static boolean isInternalIP(byte[] ip); static String ipToIPv4Str(byte[] ip); static byte[] getIP(); static void deleteFile(File file); static final String YYYY_MM_DD_HH_MM_SS; static final String YYYY_MM_DD_HH_MM_SS_SSS; static final String YYYYMMDDHHMMSS; }### Answer:
@Test public void testCurrentStackTrace() { String currentStackTrace = UtilAll.currentStackTrace(); assertThat(currentStackTrace).contains("UtilAll.currentStackTrace"); assertThat(currentStackTrace).contains("UtilAllTest.testCurrentStackTrace("); }