/**
* Test the constructor
*/
function test_everything()
{
// create a few root nodes
$node1 = new TreeNode('1');
$this->assertIdentical($node1->getId(), '1');
$this->assertFalse($node1->hasParents());
$this->assertEqual($node1->getChildren(), array());
$this->assertFalse($node1->hasChildren());
$this->assertIdentical($node1->getChildrenCount(), 0);
// create some children
$node1_1 = new TreeNode('2');
$node1_2 = new TreeNode('3');
$node1->addChild($node1_1);
$node1->addChild($node1_2);
$node1_1_1 = new TreeNode('4');
$node1_1->addChild($node1_1_1);
$parents = $node1_1->getParents();
$this->assertReference($node1, $parents['1']);
$parents = $node1_2->getParents();
$this->assertReference($node1, $parents['1']);
$parents = $node1_1_1->getParents();
$this->assertReference($node1_1, $parents['2']);
$this->assertIdentical($node1_1->getId(), '2');
$this->assertIdentical($node1_2->getId(), '3');
$this->assertIdentical($node1_1_1->getId(), '4');
$this->assertTrue($node1->hasChildren());
$this->assertTrue($node1_1->hasChildren());
$this->assertFalse($node1_2->hasChildren());
$this->assertIdentical($node1->getChildrenCount(), 2);
$children = $node1->getChildren();
$this->assertReference($children['2'], $node1_1);
$this->assertReference($children['3'], $node1_2);
$children = $node1_1->getChildren();
$this->assertReference($children['4'], $node1_1_1);
// create a new root
$node = new TreeNode('100');
$node->addChild($node1);
$children = $node->getChildren();
$this->assertReference($children['1'], $node1);
$parents = $node1->getParents();
$this->assertReference($node, $parents['100']);
// try detaching a node now
$node1->detachChild($node1_1);
$this->assertFalse($node1_1->hasParents());
$this->assertFalse($node1->isChild($node1_1));
$this->assertTrue($node1->isChild($node1_2));
}