Add rspec coverage for Ci::GenerateExposedArtifactsReportService

spec/services/ci/generate_coverage_reports_service_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Ci::GenerateCoverageReportsService do
+  let(:service) { described_class.new(project) }
+  let(:project) { create(:project, :repository) }
+
+  describe '#execute' do
+    subject { service.execute(base_pipeline, head_pipeline) }
+
+    context 'when head pipeline has coverage reports' do
+      let!(:merge_request) { create(:merge_request, :with_coverage_reports, source_project: project) }
+      let!(:service) { described_class.new(project, nil, id: merge_request.id) }
+      let!(:head_pipeline) { merge_request.head_pipeline }
+      let!(:base_pipeline) { nil }
+
+      it 'returns status and data' do
+        expect(subject[:status]).to eq(:parsed)
+        expect(subject[:data]).to eq(files: {})
+      end
+    end
+
+    context 'when head pipeline has corrupted coverage reports' do
+      let!(:merge_request) { create(:merge_request, :with_coverage_reports, source_project: project) }
+      let!(:service) { described_class.new(project, nil, id: merge_request.id) }
+      let!(:head_pipeline) { merge_request.head_pipeline }
+      let!(:base_pipeline) { nil }
+
+      before do
+        build = create(:ci_build, pipeline: head_pipeline, project: head_pipeline.project)
+        create(:ci_job_artifact, :coverage_with_corrupted_data, job: build, project: project)
+      end
+
+      it 'returns status and error message' do
+        expect(subject[:status]).to eq(:error)
+        expect(subject[:status_reason]).to include('An error occurred while fetching coverage reports.')
+      end
+    end
+
+    context 'when head pipeline has coverage reports and no merge request associated' do
+      let!(:head_pipeline) { create(:ci_pipeline, :with_coverage_reports, project: project) }
+      let!(:base_pipeline) { nil }
+
+      it 'returns status and error message' do
+        expect(subject[:status]).to eq(:error)
+        expect(subject[:status_reason]).to include('An error occurred while fetching coverage reports.')
+      end
+    end
+  end
+
+  describe '#latest?' do
+    subject { service.latest?(base_pipeline, head_pipeline, data) }
+
+    let!(:base_pipeline) { nil }
+    let!(:head_pipeline) { create(:ci_pipeline, :with_test_reports, project: project) }
+    let!(:key) { service.send(:key, base_pipeline, head_pipeline) }
+
+    context 'when cache key is latest' do
+      let(:data) { { key: key } }
+
+      it { is_expected.to be_truthy }
+    end
+
+    context 'when cache key is outdated' do
+      before do
+        head_pipeline.update_column(:updated_at, 10.minutes.ago)
+      end
+
+      let(:data) { { key: key } }
+
+      it { is_expected.to be_falsy }
+    end
+
+    context 'when cache key is empty' do
+      let(:data) { { key: nil } }
+
+      it { is_expected.to be_falsy }
+    end
+  end
+end