public void NotEnoughBytesToWrite()
{
ulong value = 151288809941952652;
Assert.ThrowsException <ArithmeticException>(() =>
{
var bytes = new byte[7].AsSpan();
VariableLengthInt.Write(value, ref bytes);
});
value = 494878333;
Assert.ThrowsException <ArithmeticException>(() =>
{
var bytes = new byte[3].AsSpan();
VariableLengthInt.Write(value, ref bytes);
});
value = 15293;
Assert.ThrowsException <ArithmeticException>(() =>
{
var bytes = new byte[1].AsSpan();
VariableLengthInt.Write(value, ref bytes);
});
value = 37;
Assert.ThrowsException <ArithmeticException>(() =>
{
var bytes = new byte[0].AsSpan();
VariableLengthInt.Write(value, ref bytes);
});
}
public void NumberTooBigTest()
{
ulong value = 4611686018427387904;
Assert.ThrowsException <ArithmeticException>(() =>
{
var bytes = new byte[8].AsSpan();
VariableLengthInt.Write(value, ref bytes);
});
}
public void HappyWriteTests()
{
ulong value = 151288809941952652;
var expected = "c2 19 7c 5e ff 14 e8 8c".ToByteArrayFromHex().AsSpan();
var actual = new byte[8].AsSpan();
int bytesUsed;
bytesUsed = VariableLengthInt.Write(value, ref actual);
Assert.IsTrue(expected.SequenceEqual(actual));
Assert.AreEqual(expected.Length, bytesUsed);
value = 494878333;
expected = "9d 7f 3e 7d".ToByteArrayFromHex();
actual = new byte[4].AsSpan();
bytesUsed = VariableLengthInt.Write(value, ref actual);
Assert.IsTrue(expected.SequenceEqual(actual));
Assert.AreEqual(expected.Length, bytesUsed);
value = 15293;
expected = "7b bd".ToByteArrayFromHex();
actual = new byte[2].AsSpan();
bytesUsed = VariableLengthInt.Write(value, ref actual);
Assert.IsTrue(expected.SequenceEqual(actual));
Assert.AreEqual(expected.Length, bytesUsed);
value = 37;
expected = "25".ToByteArrayFromHex();
actual = new byte[1].AsSpan();
bytesUsed = VariableLengthInt.Write(value, ref actual);
Assert.IsTrue(expected.SequenceEqual(actual));
Assert.AreEqual(expected.Length, bytesUsed);
}