public function testIsLast()
 {
     $crumb = new Crumb('foo');
     $trail = new Trail();
     $this->assertFalse($crumb->isLast());
     $trail->add($crumb);
     $this->assertTrue($crumb->isLast());
     $crumb2 = new Crumb('bar');
     $trail->add($crumb2);
     $this->assertFalse($crumb->isLast());
     $this->assertTrue($crumb2->isLast());
 }
 protected function getDefaultTrail()
 {
     $trail = new Trail();
     $trail->add(new Crumb('foo', '/'));
     return $trail;
 }