Use change direction in spec

spec/workers/trigger_schedule_worker_spec.rb

@@ -8,58 +8,51 @@ describe TriggerScheduleWorker do
   end
 
   context 'when there is a scheduled trigger within next_run_at' do
-    let!(:trigger_schedule) { create(:ci_trigger_schedule, :nightly) }
-    let(:next_time) { Gitlab::Ci::CronParser.new(trigger_schedule.cron, trigger_schedule.cron_timezone).next_time_from(@time_future) }
-
     before do
-      @time_future = Time.now + 10.days
-      allow(Time).to receive(:now).and_return(@time_future)
-      worker.perform
+      trigger_schedule = create(:ci_trigger_schedule, :nightly)
+      time_future = Time.now + 10.days
+      allow(Time).to receive(:now).and_return(time_future)
+      @next_time = Gitlab::Ci::CronParser.new(trigger_schedule.cron, trigger_schedule.cron_timezone).next_time_from(time_future)
     end
 
     it 'creates a new trigger request' do
-      expect(trigger_schedule.trigger.id).to eq(Ci::TriggerRequest.first.trigger_id)
+      expect { worker.perform }.to change { Ci::TriggerRequest.count }.by(1)
     end
 
     it 'creates a new pipeline' do
+      expect { worker.perform }.to change { Ci::Pipeline.count }.by(1)
       expect(Ci::Pipeline.last).to be_pending
     end
 
     it 'updates next_run_at' do
-      expect(Ci::TriggerSchedule.last.next_run_at).to eq(next_time)
+      expect { worker.perform }.to change { Ci::TriggerSchedule.last.next_run_at }.to(@next_time)
     end
   end
 
   context 'when there are no scheduled triggers within next_run_at' do
-    let!(:trigger_schedule) { create(:ci_trigger_schedule, :nightly) }
-
-    before do
-      worker.perform
-    end
+    before { create(:ci_trigger_schedule, :nightly) }
 
     it 'does not create a new pipeline' do
-      expect(Ci::Pipeline.count).to eq(0)
+      expect { worker.perform }.not_to change { Ci::Pipeline.count }
     end
 
     it 'does not update next_run_at' do
-      expect(trigger_schedule.next_run_at).to eq(Ci::TriggerSchedule.last.next_run_at)
+      expect { worker.perform }.not_to change { Ci::TriggerSchedule.last.next_run_at }
     end
   end
 
   context 'when next_run_at is nil' do
-    let!(:trigger_schedule) { create(:ci_trigger_schedule, :nightly) }
-
     before do
+      trigger_schedule = create(:ci_trigger_schedule, :nightly)
       trigger_schedule.update_attribute(:next_run_at, nil)
-      worker.perform
     end
 
     it 'does not create a new pipeline' do
-      expect(Ci::Pipeline.count).to eq(0)
+      expect { worker.perform }.not_to change { Ci::Pipeline.count }
     end
 
     it 'does not update next_run_at' do
-      expect(trigger_schedule.next_run_at).to eq(Ci::TriggerSchedule.last.next_run_at)
+      expect { worker.perform }.not_to change { Ci::TriggerSchedule.last.next_run_at }
     end
   end
 end