QuadTreeTests

@Test
    public void TestMethod3() {
        QuadTree<TestBox> quadTree = new QuadTree<>(WorldWidth, WorldHeight);

        List<List<TestBox>> items = new ArrayList<>();

        List<TestBox> t1 = new ArrayList<>();
        t1.add(new TestBox(110, 0));

        List<TestBox> t2 = new ArrayList<>();
        t2.add(new TestBox(10, 0));

        List<TestBox> t3 = new ArrayList<>();
        t3.add(new TestBox(10, 0));
        t3.add(new TestBox(10, 110));

        items.add(t1);
        items.add(t2);
        items.add(t3);

        for (List<TestBox> item : items) {
            for (TestBox testBox : item) {
                quadTree.insert(testBox);
            }
        }

...

        Rectangle thirdQuadrant = GetSubquadrantBounds(3);
        List<TestBox> elementsThird = quadTree.report(thirdQuadrant);
        index = 0;
        for (TestBox testBox : items.get(2)) {
            Assert.assertEquals(testBox, elementsThird.get(index++));
        }
    }