public function testIsValidTask() { $start = 1; $end = 2; $task = new BatchRefreshLinksForTemplate(); $task->setStartAndEndBoundaries(null, null); $this->assertFalse($task->isValidTask()); $task = new BatchRefreshLinksForTemplate(); $task->setStartAndEndBoundaries($start, $start); $this->assertTrue($task->isValidTask()); }