/**
* Correct tree tests (children stuff)
*/
function test_tree()
{
// Create parent and child instances, tree-ing them
$parent = new mock_base_nested_element('PARENT');
$child = new mock_base_nested_element('CHILD');
$parent->add_child($child);
$this->assertEquals($parent->get_children(), array('CHILD' => $child));
$this->assertEquals($child->get_parent(), $parent);
$check_children = $parent->get_children();
$check_child = $check_children['CHILD'];
$check_parent = $check_child->get_parent();
$this->assertEquals($check_child->get_name(), 'CHILD');
$this->assertEquals($check_parent->get_name(), 'PARENT');
$this->assertEquals($check_child->get_level(), 2);
$this->assertEquals($check_parent->get_level(), 1);
$this->assertEquals($check_parent->get_children(), array('CHILD' => $child));
$this->assertEquals($check_child->get_parent(), $parent);
// Add parent to grandparent
$grandparent = new mock_base_nested_element('GRANDPARENT');
$grandparent->add_child($parent);
$this->assertEquals($grandparent->get_children(), array('PARENT' => $parent));
$this->assertEquals($parent->get_parent(), $grandparent);
$this->assertEquals($parent->get_children(), array('CHILD' => $child));
$this->assertEquals($child->get_parent(), $parent);
$this->assertEquals($child->get_level(), 3);
$this->assertEquals($parent->get_level(), 2);
$this->assertEquals($grandparent->get_level(), 1);
// Add grandchild to child
$grandchild = new mock_base_nested_element('GRANDCHILD');
$child->add_child($grandchild);
$this->assertEquals($child->get_children(), array('GRANDCHILD' => $grandchild));
$this->assertEquals($grandchild->get_parent(), $child);
$this->assertEquals($grandchild->get_level(), 4);
$this->assertEquals($child->get_level(), 3);
$this->assertEquals($parent->get_level(), 2);
$this->assertEquals($grandparent->get_level(), 1);
// Add another child to parent
$child2 = new mock_base_nested_element('CHILD2');
$parent->add_child($child2);
$this->assertEquals($parent->get_children(), array('CHILD' => $child, 'CHILD2' => $child2));
$this->assertEquals($child2->get_parent(), $parent);
$this->assertEquals($grandchild->get_level(), 4);
$this->assertEquals($child->get_level(), 3);
$this->assertEquals($child2->get_level(), 3);
$this->assertEquals($parent->get_level(), 2);
$this->assertEquals($grandparent->get_level(), 1);
}
