public void Can_truncate_hash()
{
var r = new Random(1234);
CreateHash();
for (var i = 0; i < 1000; i++)
{
var k = "k" + i;
var v = TestUtil.GetRandomBytes(r);
_hash.Put(k, v.ToStream(), v.Length);
}
Assert.AreEqual(1000, _hash.Count);
_hash.Truncate();
Assert.AreEqual(0, _hash.Count);
}