public void TestHashStreamRead()
{
Random r = new Random();
byte[] bytes = new byte[1000];
r.NextBytes(bytes);
using (HashStream hs = new HashStream(new SHA256Managed(), new MemoryStream(bytes)))
{
for (int i = 0; i < 5; i++)
{
while (hs.Position < hs.Length)
{
hs.ReadByte();
int amt = r.Next(255);
byte[] tmp = new byte[amt];
hs.Read(tmp, 0, tmp.Length);
}
}
Hash expect = Hash.SHA256(bytes);
Hash actual = hs.FinalizeHash();
Assert.AreEqual(expect, actual);
Assert.AreEqual(expect.ToArray(), actual.ToArray());
Assert.AreEqual(expect.ToString(), actual.ToString());
//still valid after FinalizeHash(); however, hash is restarted
hs.Position = 0;
IOStream.Read(hs, bytes.Length);
actual = hs.FinalizeHash();
Assert.AreEqual(expect, actual);
Assert.AreEqual(expect.ToArray(), actual.ToArray());
Assert.AreEqual(expect.ToString(), actual.ToString());
}
}