public function testDistance()
{
$node_a = new Node();
$node_a->setIdHexStr('11111111-1111-4111-8111-111111111100');
$node_b = new Node();
$node_b->setIdHexStr('11111111-1111-4111-8111-111111111100');
$node_c = new Node();
$node_c->setIdHexStr('11111111-1111-4111-8111-111111111102');
$node_d = new Node();
$node_d->setIdHexStr('11111111-1111-4111-8111-111111111104');
$distance = array_fill(0, Node::ID_LEN_BYTE, 0);
$this->assertEquals($distance, $node_a->distance($node_b));
$distance = array_fill(0, Node::ID_LEN_BYTE, 0);
$distance[15] = 2;
$this->assertEquals($distance, $node_a->distance($node_c));
$distance = array_fill(0, Node::ID_LEN_BYTE, 0);
$distance[15] = 4;
$this->assertEquals($distance, $node_a->distance($node_d));
}
