1 files changed, 21 insertions, 0 deletions
diff --git a/spec/lib/gitlab/metrics/exporter/gc_request_middleware_spec.rb b/spec/lib/gitlab/metrics/exporter/gc_request_middleware_spec.rb
new file mode 100644
index 00000000000..0c70a5de701
--- /dev/null
+++ b/spec/lib/gitlab/metrics/exporter/gc_request_middleware_spec.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+require 'fast_spec_helper'
+
+RSpec.describe Gitlab::Metrics::Exporter::GcRequestMiddleware do
+  let(:app) { double(:app) }
+  let(:env) { {} }
+
+  subject(:middleware) { described_class.new(app) }
+
+  describe '#call' do
+    it 'runs a major GC after the next middleware is called' do
+      expect(app).to receive(:call).with(env).ordered.and_return([200, {}, []])
+      expect(GC).to receive(:start).ordered
+
+      response = middleware.call(env)
+
+      expect(response).to eq([200, {}, []])
+    end
+  end
+end