int expectedSize = (BigArrays.BYTE_PAGE_SIZE * 2) + 1;
byte[] expectedData = randomizedByteArrayWithSize(expectedSize);
// write byte-by-byte
for (int i = 0; i < expectedSize; i++) {
out.writeByte(expectedData[i]);
}
assertEquals(expectedSize, out.size());
assertArrayEquals(expectedData, out.bytes().toBytes());