public void SendOnClosedChannelThrows()
{
var ci = new Channel <int>();
ci.Close();
var ex = ExAssert.Catch(new Action(() => ci.Send(1).Wait()));
Assert.IsInstanceOfType(ex.InnerException, typeof(InvalidOperationException));
ex = null;
var cs = new Channel <string>();
cs.Close();
ex = ExAssert.Catch(new Action(() => cs.Send("a").Wait()));
Assert.IsInstanceOfType(ex.InnerException, typeof(InvalidOperationException));
}