function testGraphDepthSpread()
{
$root = new TreemapNode("root", "test");
$root->putChild(new TreemapNode("child", "test"));
$childOne = new TreemapNode("child1", "test");
$childTwo = new TreemapNode("child2", "test");
$childThree = new TreemapNode("child3", "test");
$childFour = new TreemapNode("child4", "test");
$childFive = new TreemapNode("child5", "test");
$childSix = new TreemapNode("child6", "test");
$childFour->putChild($childFive);
$childFour->putChild($childSix);
$this->assertEqual($childFour->getSize(), 2);
$this->assertEqual($childFour->getTotalSize(), 2);
$childThree->putChild($childFour);
$this->assertEqual($childThree->getSize(), 1);
$this->assertEqual($childThree->getTotalSize(), 3);
$childTwo->putChild($childThree);
$this->assertEqual($childTwo->getSize(), 1);
$this->assertEqual($childTwo->getTotalSize(), 4);
$childOne->putChild($childTwo);
$root->putChild($childOne);
$this->assertEqual($root->getSize(), 2);
$this->assertEqual($root->getTotalSize(), 7);
}