public void TestCollidesWith() { var entity1 = new Entity(1, 2); var cb1 = new CollisionBox(entity1, 4, 8); var entity2 = new Entity(4, 7); var cb2 = new CollisionBox(entity2, 4, 8); Assert.IsTrue(cb1.CollidesWith(cb2)); Assert.IsFalse(cb1.CollidesWith(null)); cb2 = new CollisionBox(entity2, 1, 1); Assert.IsFalse(cb1.CollidesWith(cb2)); }