public void TestDrawCanvasWithNewShapeWithoutVisitorImplemented()
{
Canvas c = new Canvas
{
Height = 10,
Width = 12
};
c.Add(new Box {Side = 5});
c.Add(new MyShape {SomeData = 3});
var visitor = _container.Resolve<IVisitor<Shape>>("Draw");
try
{
c.Accept(visitor);
Assert.Fail("Exception expected");
}
catch (InvalidOperationException)
{
// Expecting exception here for missing visitor implementation
}
A.CallTo(() => _graphics.DrawRectangle(10, 12)).MustHaveHappened(Repeated.Exactly.Once);
A.CallTo(() => _graphics.DrawBox(5)).MustHaveHappened(Repeated.Exactly.Once);
A.CallTo(() => _graphics.DrawCircle(0)).WithAnyArguments().MustNotHaveHappened();
}
public void TestDrawCanvasWithNewShapeWithCustomVisitor()
{
Canvas c = new Canvas
{
Height = 10,
Width = 12
};
MyShape myShape = new MyShape {SomeData = 3};
c.Add(new Box {Side = 5});
c.Add(myShape);
IVisitor<MyShape> customShapeVisitor = A.Fake<IVisitor<MyShape>>();
_container.RegisterInstance("Draw", customShapeVisitor);
var visitor = _container.Resolve<IVisitor<Shape>>("Draw");
c.Accept(visitor);
A.CallTo(() => _graphics.DrawRectangle(10, 12)).MustHaveHappened(Repeated.Exactly.Once);
A.CallTo(() => _graphics.DrawBox(5)).MustHaveHappened(Repeated.Exactly.Once);
A.CallTo(() => _graphics.DrawCircle(0)).WithAnyArguments().MustNotHaveHappened();
A.CallTo(() => customShapeVisitor.Visit(myShape)).MustHaveHappened(Repeated.Exactly.Once);
}
public void TestDrawCanvas()
{
Canvas c = new Canvas
{
Height = 10,
Width = 12
};
c.Add(new Box {Side = 5});
c.Add(new Circle {Radius = 12});
IVisitor<Shape> visitor = _container.Resolve<IVisitor<Shape>>("Draw");
c.Accept(visitor);
A.CallTo(() => _graphics.DrawRectangle(10, 12)).MustHaveHappened();
A.CallTo(() => _graphics.DrawBox(5)).MustHaveHappened();
A.CallTo(() => _graphics.DrawCircle(12)).MustHaveHappened();
}