### Question:
Murmur3PartitionerTokenRing implements TokenRing { @Override public BigInteger getTokenCountInRange(String startToken, String endToken) { long start = Long.parseLong(startToken); long end = Long.parseLong(endToken); if (start == end) { if (start == MIN_TOKEN) { return TOTAL_TOKEN_COUNT; } else { return ZERO; } } BigInteger result = BigInteger.valueOf(end).subtract(BigInteger.valueOf(start)); if (end <= start) { result = result.add(TOTAL_TOKEN_COUNT); } return result; } private  Murmur3PartitionerTokenRing(); @Override double getRingFraction(String start, String end); @Override BigInteger getTokenCountInRange(String startToken, String endToken); static final Murmur3PartitionerTokenRing INSTANCE; }### Answer:
@Test public void testGetTokenCountInRange() { assertEquals(tokenRing.getTokenCountInRange("0", "1"), ONE); assertEquals(tokenRing.getTokenCountInRange("-1", "1"), new BigInteger("2")); assertEquals(tokenRing.getTokenCountInRange("-100", "100"), new BigInteger("200")); assertEquals(tokenRing.getTokenCountInRange("0", "10"), new BigInteger("10")); assertEquals(tokenRing.getTokenCountInRange("1", "11"), new BigInteger("10")); assertEquals(tokenRing.getTokenCountInRange("0", "0"), ZERO); assertEquals(tokenRing.getTokenCountInRange("1", "1"), ZERO); assertEquals(tokenRing.getTokenCountInRange(Long.toString(Long.MIN_VALUE), Long.toString(Long.MIN_VALUE)), BigInteger.valueOf(2).pow(64).subtract(ONE)); assertEquals(tokenRing.getTokenCountInRange("1", "0"), BigInteger.valueOf(2).pow(64).subtract(BigInteger.valueOf(2))); }