public async Task SeekAndReadAsync()
{
Random random = new Random(1);
var data = GenerateData(1234567);
using (var memoryStream = new MemoryStream(data, writable: false))
using (var cachingStream = new CachingStream(memoryStream, Ownership.Owns))
{
for (int i = 0; i < 100; i++)
{
int offset = random.Next(data.Length - 100);
int length = random.Next(1, data.Length - offset);
Assert.AreEqual(offset, cachingStream.Seek(offset, SeekOrigin.Begin));
var read = await cachingStream.ReadExactlyAsync(length);
Assert.AreEqual(data.Skip(offset).Take(length), read);
}
}
}
