public async Task CompareFiles(string a, string b)
{
using var af = new FileStream(a, FileMode.Open);
using var bf = new FileStream(b, FileMode.Open);
Assert.Equal(af.Length, bf.Length);
using var sha = new SHA256Managed();
var ha = BitConverter.ToString(await sha.ComputeHashAsync(af));
var hb = BitConverter.ToString(await sha.ComputeHashAsync(bf));
Assert.True(ha == hb);
}
public static async Task HashPipe()
{
byte[] data = { 1, 2, 3, 5, 8, 13 };
using var alg = new SHA256Managed();
var hash = new byte[alg.HashSize / 8];
var pipe = new Pipe();
await pipe.Writer.WriteAsync(data);
await alg.ComputeHashAsync(pipe.Reader, data.Length, hash);
alg.Initialize();
Equal(hash, alg.ComputeHash(data));
}
public static async Task HashEntirePipe()
{
byte[] data = { 1, 2, 3, 5, 8, 13 };
using var alg = new SHA256Managed();
var hash = new byte[alg.HashSize / 8];
var pipe = new Pipe();
ThreadPool.QueueUserWorkItem(async state =>
{
await pipe.Writer.WriteAsync(data);
pipe.Writer.Complete();
});
await alg.ComputeHashAsync(pipe.Reader, hash);
alg.Initialize();
Equal(hash, alg.ComputeHash(data));
}