/**
  * Test offset set sets both new & existing values
  *
  * @return void
  */
 public function testOffsetSet()
 {
     $this->collection->offsetSet('new', 7);
     $this->assertEquals(7, $this->collection->offsetGet('new'));
     $this->assertEquals(2, $this->collection->offsetGet(1));
     $this->collection->offsetSet(1, 9);
     $this->assertEquals(9, $this->collection->offsetGet(1));
 }