StringUtil { public static boolean isEmptyOrContainsEmptyString(String[] _array) { return _array == null || _array.length == 0 || (_array.length == 1 && _array[0].equals("")); }  static final String formatMinString(double _d); static final String formatMinString(long _n); static final String formatMBString(double _d); static final String formatKBString(double _d); static final String byteToMBString(double _bytes); static final String byteToKBString(long _bytes); static final String byteToMBString(long _bytes); static final synchronized String formatDate(long _ms); @Deprecated static final String nanoToMinString(long _nano); static final String nanoToFlexDurationString(long _nano); static final String msToMinString(long _ms); static String join(Object[] _objs, String _sep); static String join(String[] _strings, String _sep); static String join(Collection<?> _objs, String _sep); static String padLeft(String _value, int _length); static String padLeft(long _value, int _length); static String padLeft(int _value, int _length); static String padLeft(boolean _value, int _length); static String padLeft(double _value, int _length); static boolean meetsLengthConstraint(String _string, int _length); static final String getRandonString(int _length); static String[] toArray(@NotNull String _string); static boolean isEmptyOrContainsEmptyString(String[] _array); static boolean matchesPattern(String _string, Pattern[] _patterns); static final long KILOBYTE; static final long MEGABYTE; static final long MILLI_IN_MIN; static final long NANOS_IN_MIN; }
@Test public void testIsEmptyOrContainsEmptyString() { assertEquals(true, StringUtil.isEmptyOrContainsEmptyString(null)); assertEquals(true, StringUtil.isEmptyOrContainsEmptyString(new String[] {})); assertEquals(true, StringUtil.isEmptyOrContainsEmptyString(new String[] {""})); assertEquals(false, StringUtil.isEmptyOrContainsEmptyString(new String[] {"foo"})); assertEquals(false, StringUtil.isEmptyOrContainsEmptyString(new String[] {"foo", "bar"})); }