public function provideGetAncestorData()
{
$root = new Item();
$level1 = new Item();
$level1->setParent($root);
$level2 = new Item();
$level2->setParent($level1);
return array(array($root, 0, $root), array($root, 1, null), array($root, -1, null), array($level1, 0, $root), array($level1, -1, $root), array($level1, '-1', $root), array($level1, '-9', null), array($level1, 9, null), array($level2, 1, $level1), array($level2, '2', $level2), array($level2, '0', $root), array($level2, 'foo', null));
}
public function testIterator()
{
$root = new Item();
$level1 = new Item();
$level1->setParent($root);
$iterator = new BreadcrumbIterator($level1);
$this->assertSame(0, $iterator->key());
$this->assertNull($iterator->rewind());
$this->assertTrue($iterator->valid());
$this->assertSame($level1, $iterator->current());
$this->assertSame(0, $iterator->key());
$this->assertNull($iterator->next());
$this->assertTrue($iterator->valid());
$this->assertSame($root, $iterator->current());
$this->assertSame(1, $iterator->key());
$iterator->next();
$this->assertFalse($iterator->valid());
$this->assertNull($iterator->current());
$this->assertNull($iterator->key());
}