public function testClear()
{
$this->list->insert('foo', new \stdClass(), 0);
$this->list->insert('bar', new \stdClass(), 0);
$this->assertEquals(2, count($this->list));
$this->list->clear();
$this->assertEquals(0, count($this->list));
$this->assertSame(false, $this->list->current());
}
