### Question:
ByteSequenceMap implements SequenceMap<ByteBuffer> { public void put(final ByteBuffer value, final long id) { if (value.remaining() > maxKeyLength) { throw new IllegalArgumentException("Key too long"); } if (liveEntryCount > entryCountToTriggerRehash) { rehash(true); } final int hashValue = hash.applyAsInt(value); final int entryIndex = (hashValue & entryMask); final boolean existingEntryAt = isExistingEntryAt(value, entryIndex, hashValue); if (!isValuePresent(entryIndex, dataBuffer) || existingEntryAt) { insertEntry(value, id, entryIndex, !existingEntryAt, hashValue); } else { for (int i = 1; i < totalEntryCount; i++) { int candidateIndex = (entryIndex + (i)); if (candidateIndex >= totalEntryCount) { candidateIndex -= totalEntryCount; } final boolean innerExistingEntryAt = isExistingEntryAt(value, candidateIndex, hashValue); if (!isValuePresent(candidateIndex, dataBuffer) || innerExistingEntryAt) { insertEntry(value, id, candidateIndex, !innerExistingEntryAt, hashValue); return; } } put(value, id); } } ByteSequenceMap(final int maxKeyLength, final int initialSize, final long missingValue);  ByteSequenceMap(
        final int maxKeyLength, final int initialSize,
        final long missingValue, final IntFunction<ByteBuffer> bufferFactory);   ByteSequenceMap(
        final int maxKeyLength, final int initialSize,
        final ToIntFunction<ByteBuffer> hash, final long missingValue,
        final IntFunction<ByteBuffer> bufferFactory); void put(final ByteBuffer value, final long id); long get(final ByteBuffer value); long remove(final ByteBuffer value); int size(); void rehash();  }### Answer:
@Test void shouldRetrieveMultipleValuesWhenHashesCollide() { final ByteSequenceMap poorIndex = new ByteSequenceMap(16, 10, cs -> 7, Long.MIN_VALUE, ByteBuffer::allocate); final ByteBuffer otherTerm = toBuffer("otherTerm"); final long otherId = 99L; poorIndex.put(SEARCH_TERM, ID); poorIndex.put(otherTerm, otherId); assertSearchResult(poorIndex, SEARCH_TERM, ID); receivedList.clear(); assertSearchResult(poorIndex, otherTerm, otherId); }
@Test void shouldHaveCorrectIndexAfterResize() { final int doubleInitialSize = INITIAL_SIZE * 2; for (int i = 0; i < doubleInitialSize; i++) { map.put(toBuffer("searchTerm_" + i), i); } for (int i = 0; i < doubleInitialSize; i++) { receivedList.clear(); assertSearchResult(map, toBuffer("searchTerm_" + i), i); } }
@Test void shouldReplaceExistingValue() { final long otherId = 42L; map.put(SEARCH_TERM, ID); map.put(SEARCH_TERM, otherId); assertSearchResult(map, SEARCH_TERM, otherId); }
@Test void shouldRejectKeyThatIsTooLong() { final byte[] key = new byte[MAX_KEY_LENGTH + 1]; for (int i = 0; i <= MAX_KEY_LENGTH; i++) { key[i] = (byte)'x'; } Assertions.assertThrows(IllegalArgumentException.class, () -> map.put(ByteBuffer.wrap(key), 7L)); }
@Test void shouldStoreSingleValue() { map.put(SEARCH_TERM, ID); assertSearchResult(map, SEARCH_TERM, ID); }