public function testRemoveAll()
{
// Remove the following lines when you implement this test.
$map = new HashMap();
$map->put(5, 5);
$map->put(6, 6);
$this->assertTrue($this->object->removeAll($map));
$this->assertFalse($this->object->containsKey(5));
$map = new HashMap();
$map->put(8, 5);
$map->put(78, 6);
$this->assertTrue($this->object->removeAll($map));
}