1 files changed, 47 insertions, 0 deletions
diff --git a/spec/services/ci/update_build_queue_service_spec.rb b/spec/services/ci/update_build_queue_service_spec.rb
new file mode 100644
index 00000000000..f01a388b895
--- /dev/null
+++ b/spec/services/ci/update_build_queue_service_spec.rb
@@ -0,0 +1,47 @@
+require 'spec_helper'
+
+describe Ci::UpdateBuildQueueService, :services do
+  let(:project) { create(:project) }
+  let(:build) { create(:ci_build, pipeline: pipeline) }
+  let(:pipeline) { create(:ci_pipeline, project: project) }
+
+  context 'when updating specific runners' do
+    let(:runner) { create(:ci_runner) }
+
+    context 'when there are runner that can pick build' do
+      before { build.project.runners << runner }
+
+      it 'ticks runner queue value' do
+        expect { subject.execute(build) }
+          .to change { runner.ensure_runner_queue_value }
+      end
+    end
+
+    context 'when there are no runners that can pick build' do
+      it 'does not tick runner queue value' do
+        expect { subject.execute(build) }
+          .not_to change { runner.ensure_runner_queue_value }
+      end
+    end
+  end
+
+  context 'when updating shared runners' do
+    let(:runner) { create(:ci_runner, :shared) }
+
+    context 'when there are runner that can pick build' do
+      it 'ticks runner queue value' do
+        expect { subject.execute(build) }
+          .to change { runner.ensure_runner_queue_value }
+      end
+    end
+
+    context 'when there are no runners that can pick build' do
+      before { build.tag_list = [:docker] }
+
+      it 'does not tick runner queue value' do
+        expect { subject.execute(build) }
+          .not_to change { runner.ensure_runner_queue_value }
+      end
+    end
+  end
+end