### Question:
CSN implements Serializable, Comparable<CSN> { @Override public boolean equals(Object obj) { if (this == obj) { return true; } else if (obj instanceof CSN) { final CSN csn = (CSN) obj; return this.seqnum == csn.seqnum && this.serverId == csn.serverId && this.timeStamp == csn.timeStamp; } else { return false; } } CSN(String str);  CSN(long timeStamp, int seqNum, int serverId); static CSN valueOf(String s); static CSN valueOf(ByteSequence bs); long getTime(); long getTimeSec(); int getSeqnum(); int getServerId(); @Override boolean equals(Object obj); @Override int hashCode(); ByteString toByteString(); void toByteString(ByteStringBuilder builder); @Override String toString(); String toStringUI(); static int compare(CSN csn1, CSN csn2); static int diffSeqNum(CSN csn1, CSN csn2); boolean isOlderThan(CSN csn); boolean isOlderThanOrEqualTo(CSN csn); boolean isNewerThanOrEqualTo(CSN csn); boolean isNewerThan(CSN csn); @Override int compareTo(CSN csn); static final int BYTE_ENCODING_LENGTH; static final int STRING_ENCODING_LENGTH; static final CSN MAX_CSN_VALUE; }### Answer:
@Test(dataProvider = "createCSN") public void csnEquals(CSN csn1, CSN csn2, CSN csn3, CSN csn4, CSN csn5) throws Exception { assertFalse(csn1.equals(new Object())); assertEquals(csn1, csn1); assertEquals(csn1, csn2); assertFalse(csn1.equals(csn3)); assertFalse(csn1.equals(csn4)); assertFalse(csn1.equals(csn5)); }