public void ClassTest()
{
Assert.IsTrue(typeof(Shape).IsAbstract);
Assert.IsNotNull(typeof(Shape).GetMethod("AsString"));
var circle = new Circle(2f);
Assert.AreEqual("A circle with radius 2", circle.AsString());
Assert.IsTrue(circle is Shape);
Assert.IsTrue(typeof(ShapeDecorator).IsAbstract);
Assert.IsTrue(typeof(ShapeDecorator).IsSubclassOf(typeof(Shape)));
Assert.IsTrue(typeof(ShapeDecoratorCyclePolicy).IsAbstract);
Assert.IsTrue(typeof(ShapeDecoratorCyclePolicy).GetMethod("TypeAdditionAllowed").IsAbstract);
Assert.IsTrue(typeof(ShapeDecoratorCyclePolicy).GetMethod("ApplicationAllowed").IsAbstract);
Assert.IsTrue(typeof(CyclesAllowedPolicy).IsSubclassOf(typeof(ShapeDecoratorCyclePolicy)));
Assert.IsTrue(typeof(ThrowOnCyclePolicy).IsSubclassOf(typeof(ShapeDecoratorCyclePolicy)));
Assert.IsTrue(typeof(AbsorbCyclePolicy).IsSubclassOf(typeof(ShapeDecoratorCyclePolicy)));
var colored1 = new ColoredShapeThrowOnCycle(circle, "red");
Assert.IsTrue(colored1 is ShapeDecorator <ColoredShapeThrowOnCycle, ThrowOnCyclePolicy>);
}
public void TestThrowOnCycle()
{
var circle = new Circle(2);
var colored1 = new ColoredShapeThrowOnCycle(circle, "red");
try
{
var colored2 = new ColoredShapeThrowOnCycle(colored1, "blue");
Assert.Fail();
}
catch (Exception e)
{
Assert.IsTrue(e is InvalidOperationException);
}
}
