Add specs for new async ci pipeline workers

spec/workers/process_pipeline_worker_spec.rb

+require 'spec_helper'
+
+describe ProcessPipelineWorker do
+  describe '#perform' do
+    context 'when pipeline exists' do
+      let(:pipeline) { create(:ci_pipeline) }
+
+      it 'processes pipeline' do
+        expect_any_instance_of(Ci::Pipeline).to receive(:process!)
+
+        described_class.new.perform(pipeline.id)
+      end
+    end
+
+    context 'when pipeline does not exist' do
+      it 'does not raise exception' do
+        expect { described_class.new.perform(123) }
+          .not_to raise_error
+      end
+    end
+  end
+end

spec/workers/update_pipeline_worker_spec.rb

+require 'spec_helper'
+
+describe UpdatePipelineWorker do
+  describe '#perform' do
+    context 'when pipeline exists' do
+      let(:pipeline) { create(:ci_pipeline) }
+
+      it 'updates pipeline status' do
+        expect_any_instance_of(Ci::Pipeline).to receive(:update_status)
+
+        described_class.new.perform(pipeline.id)
+      end
+    end
+
+    context 'when pipeline does not exist' do
+      it 'does not raise exception' do
+        expect { described_class.new.perform(123) }
+          .not_to raise_error
+      end
+    end
+  end
+end