/**
  * @depends testAddGet
  */
 public function testClear()
 {
     // TODO: Include test fixtures instead of relying on side effect.
     $this->testAddGet();
     $jobId = 1;
     $result = $this->object->clear($jobId);
     $this->assertTrue($result);
     $result = $this->object->get($jobId);
     $this->assertNull($result);
 }