public void Serialize()
{
var buffer = new byte[1024];
var random = new Random();
byte[] hash = random.NextBytes(20);
var f = new Fingerprint(ValueKind.List, 123, hash);
Assert.Equal(
new Fingerprint(ValueKind.List, 123, hash.ToImmutableList()).Serialize(),
f.Serialize()
);
Assert.Equal(f, Fingerprint.Deserialize(f.Serialize()));
long estimatedSize = f.CountSerializationBytes();
Assert.Equal(f.Serialize().LongLength, estimatedSize);
long writtenSize = f.SerializeInto(buffer, 128L);
Assert.Equal(estimatedSize, writtenSize);
AssertEqual(f.Serialize(), buffer.Skip(128).Take((int)writtenSize).ToArray());
Assert.Equal(f, Fingerprint.Deserialize(buffer, 128L, writtenSize));
var s = new MemoryStream();
var formatter = new BinaryFormatter();
formatter.Serialize(s, f);
s.Seek(0, SeekOrigin.Begin);
Assert.Equal(f, (Fingerprint)formatter.Deserialize(s));
hash = random.NextBytes(20);
f = new Fingerprint(ValueKind.Dictionary, 456, hash);
Assert.Equal(f, Fingerprint.Deserialize(f.Serialize()));
estimatedSize = f.CountSerializationBytes();
Assert.Equal(f.Serialize().LongLength, estimatedSize);
writtenSize = f.SerializeInto(buffer, 512L);
Assert.Equal(estimatedSize, writtenSize);
AssertEqual(f.Serialize(), buffer.Skip(512).Take((int)writtenSize).ToArray());
Assert.Equal(f, Fingerprint.Deserialize(buffer, 512L, writtenSize));
byte[] tooShort = f.Serialize().Take(8).ToArray();
FormatException e = Assert.Throws <FormatException>(
() => Fingerprint.Deserialize(tooShort)
);
Assert.Contains("too short", e.Message, StringComparison.OrdinalIgnoreCase);
byte[] invalidKind = f.Serialize();
invalidKind[0] = byte.MaxValue;
e = Assert.Throws <FormatException>(
() => Fingerprint.Deserialize(invalidKind)
);
Assert.Contains("invalid value kind", e.Message, StringComparison.OrdinalIgnoreCase);
s = new MemoryStream();
formatter.Serialize(s, f);
s.Seek(0, SeekOrigin.Begin);
Assert.Equal(f, (Fingerprint)formatter.Deserialize(s));
}
public void Equality()
{
byte[] hashA = new Random().NextBytes(20);
var hashB = new byte[hashA.Length];
hashA.CopyTo(hashB, 0);
hashB[19] = (byte)(hashA[19] >= 0xff ? 0 : hashA[19] + 1);
Assert.NotEqual(hashA, hashB);
var l123A = new Fingerprint(ValueKind.List, 123, hashA);
Assert.False(l123A.Equals(null));
Assert.False(l123A.Equals("other"));
var l123A_ = new Fingerprint(ValueKind.List, 123, hashA.ToImmutableList());
Assert.Equal(l123A, l123A_);
Assert.True(l123A.Equals((object)l123A_));
Assert.Equal(l123A.GetHashCode(), l123A_.GetHashCode());
Assert.Equal(l123A.Serialize(), l123A_.Serialize());
Assert.True(l123A == l123A_);
Assert.False(l123A != l123A_);
var d123A = new Fingerprint(ValueKind.Dictionary, 123, hashA);
Assert.NotEqual(l123A, d123A);
Assert.False(l123A.Equals((object)d123A));
Assert.NotEqual(l123A.GetHashCode(), d123A.GetHashCode());
Assert.NotEqual(l123A.Serialize(), d123A.Serialize());
Assert.False(l123A == d123A);
Assert.True(l123A != d123A);
var l122A = new Fingerprint(ValueKind.List, 122, hashA);
Assert.NotEqual(l123A, l122A);
Assert.False(l123A.Equals((object)l122A));
Assert.NotEqual(l123A.GetHashCode(), l122A.GetHashCode());
Assert.NotEqual(l123A.Serialize(), l122A.Serialize());
Assert.False(l123A == l122A);
Assert.True(l123A != l122A);
var l123B = new Fingerprint(ValueKind.List, 123, hashB);
Assert.NotEqual(l123A, l123B);
Assert.False(l123A.Equals((object)l123B));
Assert.NotEqual(l123A.GetHashCode(), l123B.GetHashCode());
Assert.NotEqual(l123A.Serialize(), l123B.Serialize());
Assert.False(l123A == l123B);
Assert.True(l123A != l123B);
}
private static Fingerprint TwiddleHashByte(Fingerprint fingerprint, int index)
{
Contract.Requires(index >= 0 && index < FingerprintUtilities.FingerprintLength);
var buffer = new byte[FingerprintUtilities.FingerprintLength];
fingerprint.Serialize(buffer);
buffer[index] = unchecked ((byte)~buffer[index]);
return(FingerprintUtilities.CreateFrom(buffer));
}
public void TestSerialization()
{
Fingerprint fp1 = new Fingerprint(65);
Fingerprint fp2 = new Fingerprint(65);
fp1.Touch(0);
fp1.Touch(2);
fp1.Touch(31);
fp1.Touch(32);
Assert.False(fp2.Equals(fp1));
var buffer = new x2net.Buffer();
fp1.Serialize(new Serializer(buffer));
buffer.Rewind();
fp2.Deserialize(new Deserializer(buffer));
Assert.True(fp2.Equals(fp1));
}
private string GetKey(Fingerprint weakFingerprint) => $"WF_{weakFingerprint.Serialize()}";
/// <summary>
/// Copies the content hash to a byte array starting at the given offset.
/// </summary>
/// <remarks>
/// This requires that offset + Length be
/// at most the length of the array.
/// </remarks>
public void CopyTo(byte[] buffer, int offset)
{
RawHash.Serialize(buffer, offset);
}
public void TestSerialization()
{
Fingerprint fp1 = new Fingerprint(65);
Fingerprint fp2 = new Fingerprint(65);
fp1.Touch(0);
fp1.Touch(2);
fp1.Touch(31);
fp1.Touch(32);
Assert.False(fp2.Equals(fp1));
var buffer = new x2.Buffer();
fp1.Serialize(new Serializer(buffer));
buffer.Rewind();
fp2.Deserialize(new Deserializer(buffer));
Assert.True(fp2.Equals(fp1));
}
/// <inheritdoc />
public RedisKey ToRedisKey(Fingerprint fingerprint)
{
return(fingerprint.Serialize());
}
