public void DisposeAllDisposables()
{
TestDisposable disposable1 = new TestDisposable();
TestDisposable disposable2 = new TestDisposable();
using (TestAgent agent = new TestAgent(Substitute.For <IMessageBoard>()))
{
agent.MarkForDispose(disposable1);
agent.MarkForDispose(disposable2);
}
disposable1.IsDisposed.Should().BeTrue("all disposables should be disposed on dispose.");
disposable2.IsDisposed.Should().BeTrue("all disposables should be disposed on dispose.");
}