1 files changed, 42 insertions, 0 deletions
diff --git a/spec/lib/gitlab/performance_bar/stats_spec.rb b/spec/lib/gitlab/performance_bar/stats_spec.rb
new file mode 100644
index 00000000000..c34c6f7b31f
--- /dev/null
+++ b/spec/lib/gitlab/performance_bar/stats_spec.rb
@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::PerformanceBar::Stats do
+  describe '#process' do
+    let(:request) { fixture_file('lib/gitlab/performance_bar/peek_data.json') }
+    let(:redis) { double(Gitlab::Redis::SharedState) }
+    let(:logger) { double(Gitlab::PerformanceBar::Logger) }
+    let(:request_id) { 'foo' }
+    let(:stats) { described_class.new(redis) }
+
+    describe '#process' do
+      subject(:process) { stats.process(request_id) }
+
+      before do
+        allow(stats).to receive(:logger).and_return(logger)
+      end
+
+      it 'logs each SQL query including its duration' do
+        allow(redis).to receive(:get).and_return(request)
+
+        expect(logger).to receive(:info)
+          .with({ duration_ms: 1.096, filename: 'lib/gitlab/pagination/offset_pagination.rb',
+                  filenum: 53, method: 'add_pagination_headers', request_id: 'foo', type: :sql })
+        expect(logger).to receive(:info)
+          .with({ duration_ms: 0.817, filename: 'lib/api/helpers.rb',
+                  filenum: 112, method: 'find_project', request_id: 'foo', type: :sql }).twice
+
+        subject
+      end
+
+      it 'logs an error when the request could not be processed' do
+        allow(redis).to receive(:get).and_return(nil)
+
+        expect(logger).to receive(:error).with(message: anything)
+
+        subject
+      end
+    end
+  end
+end