@Test
public void twentyFor4x5RectangleFromSquare() throws Exception {
final Rectangle rectangle = new Rectangle();
rectangle.setWidth(5);
rectangle.setHeight(4);
final Square square = new Square();
square.setSideLength(3);
List<Shape> shapes =
new ArrayList<Shape>() {
{
add(rectangle);
add(square);
}
};
List<Integer> areas = new ArrayList<Integer>();
for (Shape shape : shapes) {
areas.add(shape.area());
}
assertEquals(20, areas.get(0).intValue());
assertEquals(9, areas.get(1).intValue());
}
@Test
public void nineFor3x3Square() throws Exception {
Square square = new Square();
square.setSideLength(3);
assertEquals(9, square.area());
}