1 files changed, 27 insertions, 0 deletions
diff --git a/spec/lib/gitlab/cluster/puma_worker_killer_observer_spec.rb b/spec/lib/gitlab/cluster/puma_worker_killer_observer_spec.rb
new file mode 100644
index 00000000000..180520b27e7
--- /dev/null
+++ b/spec/lib/gitlab/cluster/puma_worker_killer_observer_spec.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::Cluster::PumaWorkerKillerObserver do
+  let(:counter) { Gitlab::Metrics::NullMetric.instance }
+
+  before do
+    allow(Gitlab::Metrics).to receive(:counter)
+      .with(any_args)
+      .and_return(counter)
+  end
+
+  describe '#callback' do
+    subject { described_class.new }
+
+    it 'increments timeout counter' do
+      worker = double(index: 0)
+
+      expect(counter)
+        .to receive(:increment)
+        .with({ worker: 'worker_0' })
+
+      subject.callback.call(worker)
+    end
+  end
+end