public function test_isRunning_and_isNotRunning_scopes()
 {
     $running = $this->mockCampaign();
     $running->is_running = true;
     $running->save();
     $not = $this->mockCampaign();
     $not->is_running = false;
     $not->save();
     $query = Campaign::isRunning()->get();
     $this->assertEquals(1, $query->count());
     $this->assertEquals($running->id, $query->first()->id);
     $query = Campaign::isNotRunning()->get();
     $this->assertEquals(1, $query->count());
     $this->assertEquals($not->id, $query->first()->id);
 }