private PersistentHeapUsedSpace GetSpaceAt(int token)
{
int sizeIndex = token - PersistentHeapSpace.GetUserSizeSize();
byte[] sizeBytes = _file.GetAmount(sizeIndex, PersistentHeapSpace.GetUserSizeSize());
int userSize = PersistentHeapSpace.GetUserSize(sizeBytes);
int fullLength = userSize + PersistentHeapSpace.GetUserSizeSize();
int endIndex = sizeIndex + fullLength - 1;
byte[] data = _file.GetRange(sizeIndex + PersistentHeapSpace.GetUserSizeSize(), endIndex);
//let PersistentHeapUsedSpace be default
PersistentHeapUsedSpace usedSpace = new PersistentHeapUsedSpace(sizeIndex, endIndex, data);
return(usedSpace);
}
private static void GetRangeTestAssert(byte[] bytes, int startIndex, FileWithHeader fwh)
{
fwh.Put(startIndex, bytes);
byte[] actual = fwh.GetRange(startIndex, startIndex + bytes.Length - 1);
TestHelper.AssertByteArraysAreSame(bytes, actual);
}