1 files changed, 58 insertions, 0 deletions
diff --git a/spec/lib/gitlab/analytics/cycle_analytics/sorting_spec.rb b/spec/lib/gitlab/analytics/cycle_analytics/sorting_spec.rb
new file mode 100644
index 00000000000..8f5be709a11
--- /dev/null
+++ b/spec/lib/gitlab/analytics/cycle_analytics/sorting_spec.rb
@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Analytics::CycleAnalytics::Sorting do
+  let(:stage) { build(:cycle_analytics_project_stage, start_event_identifier: :merge_request_created, end_event_identifier: :merge_request_merged) }
+
+  subject(:order_values) { described_class.apply(MergeRequest.joins(:metrics), stage, sort, direction).order_values }
+
+  context 'when invalid sorting params are given' do
+    let(:sort) { :unknown_sort }
+    let(:direction) { :unknown_direction }
+
+    it 'falls back to end_event DESC sorting' do
+      expect(order_values).to eq([stage.end_event.timestamp_projection.desc])
+    end
+  end
+
+  context 'sorting end_event' do
+    let(:sort) { :end_event }
+
+    context 'direction desc' do
+      let(:direction) { :desc }
+
+      specify do
+        expect(order_values).to eq([stage.end_event.timestamp_projection.desc])
+      end
+    end
+
+    context 'direction asc' do
+      let(:direction) { :asc }
+
+      specify do
+        expect(order_values).to eq([stage.end_event.timestamp_projection.asc])
+      end
+    end
+  end
+
+  context 'sorting duration' do
+    let(:sort) { :duration }
+
+    context 'direction desc' do
+      let(:direction) { :desc }
+
+      specify do
+        expect(order_values).to eq([Arel::Nodes::Subtraction.new(stage.end_event.timestamp_projection, stage.start_event.timestamp_projection).desc])
+      end
+    end
+
+    context 'direction asc' do
+      let(:direction) { :asc }
+
+      specify do
+        expect(order_values).to eq([Arel::Nodes::Subtraction.new(stage.end_event.timestamp_projection, stage.start_event.timestamp_projection).asc])
+      end
+    end
+  end
+end