### Question:
TLVList implements Serializable, Loggeable { public void unpack(byte[] buf) throws IllegalArgumentException { unpack(buf, 0); } TLVList(); void unpack(byte[] buf); List<TLVMsg> getTags(); Enumeration<TLVMsg> elements(); void unpack(byte[] buf, int offset); void append(TLVMsg tlv); TLVList append(int tag, byte[] value); TLVList append(int tag, String value); void deleteByIndex(int index); void deleteByTag(int tag); TLVMsg find(int tag); int findIndex(int tag); TLVMsg findNextTLV(); TLVMsg index(int index); byte[] pack(); String getString(int tag); byte[] getValue(int tag); boolean hasTag(int tag); @Override void dump(PrintStream p, String indent);  }### Answer:
@Test public void testUnpack() { byte[] buf = ISOUtil.hex2byte("030100"); instance.unpack(buf, 0); assertFalse(instance.getTags().isEmpty()); TLVMsg tm = instance.index(0); assertEquals(0x03, tm.getTag()); assertArrayEquals(ISOUtil.hex2byte("00"), tm.getValue()); }
@Test public void testUnpackFixeTagOneWith0x00Padding1() { assertThrows(IllegalArgumentException.class, () -> { instance = BUILDER_FT1.build(); instance.unpack(ISOUtil.hex2byte("000003112233")); }); }
@Test public void testUnpackThrowsNullPointerException() { assertThrows(NullPointerException.class, () -> { instance.unpack(null, 100); }); }
@Test public void testUnpackThrowsNullPointerException1() { assertThrows(NullPointerException.class, () -> { instance.unpack(null); }); }