public void Buffer_ArgumentChecking()
{
var ns = default(ISubscribable <int>);
var xs = DummySubscribable <int> .Instance;
var n = 1;
var t = TimeSpan.FromSeconds(1);
var u = -t;
ReactiveAssert.Throws <ArgumentNullException>(() => Subscribable.Buffer(ns, n));
ReactiveAssert.Throws <ArgumentNullException>(() => Subscribable.Buffer(ns, n, n));
ReactiveAssert.Throws <ArgumentNullException>(() => Subscribable.Buffer(ns, t, n));
ReactiveAssert.Throws <ArgumentOutOfRangeException>(() => Subscribable.Buffer(xs, 0));
ReactiveAssert.Throws <ArgumentOutOfRangeException>(() => Subscribable.Buffer(xs, 0, n));
ReactiveAssert.Throws <ArgumentOutOfRangeException>(() => Subscribable.Buffer(xs, n, 0));
ReactiveAssert.Throws <ArgumentOutOfRangeException>(() => Subscribable.Buffer(xs, t, 0));
ReactiveAssert.Throws <ArgumentNullException>(() => Subscribable.Buffer(ns, t));
ReactiveAssert.Throws <ArgumentNullException>(() => Subscribable.Buffer(ns, t, t));
ReactiveAssert.Throws <ArgumentOutOfRangeException>(() => Subscribable.Buffer(xs, u));
ReactiveAssert.Throws <ArgumentOutOfRangeException>(() => Subscribable.Buffer(xs, u, t));
ReactiveAssert.Throws <ArgumentOutOfRangeException>(() => Subscribable.Buffer(xs, t, u));
ReactiveAssert.Throws <ArgumentOutOfRangeException>(() => Subscribable.Buffer(xs, u, n));
}