public void TestDelegateExtensions()
{
Action a = () => {};
Action b = () => { int i = 0; };
TestEvent += a;
TestEvent += b;
var list = TestEvent.GetInvokationsAsArray();
list.Length.ShouldBeEquivalentTo(2);
Action c = () => { int k = 1; };
Action d = TestEvent.CombineDelegates(c);
d.GetInvokationsAsArray().Length.ShouldBeEquivalentTo(3);
d.RemoveDelegate(c).GetInvokationsAsArray().Length.ShouldBeEquivalentTo(2);
}