// and before that.
assertEquals("invalid buffer length", startPos + numValues, ubaos.length());
assertEquals("invalid startPos", startPos, ubaos.getStartPos());
byte[] bytes = ubaos.toByteArray();
for (int i = 0; i < startPos; i++) {
assertEquals(i, bytes[i]);
}
for (int i = startPos, j = 0; j < numValues; i++, j++) {