1 files changed, 99 insertions, 0 deletions
diff --git a/spec/finders/ci/testing/daily_build_group_report_results_finder_spec.rb b/spec/finders/ci/testing/daily_build_group_report_results_finder_spec.rb
new file mode 100644
index 00000000000..a703f3b800c
--- /dev/null
+++ b/spec/finders/ci/testing/daily_build_group_report_results_finder_spec.rb
@@ -0,0 +1,99 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Ci::Testing::DailyBuildGroupReportResultsFinder do
+  describe '#execute' do
+    let_it_be(:project) { create(:project, :private) }
+    let(:user_without_permission) { create(:user) }
+    let_it_be(:user_with_permission) { project.owner }
+    let_it_be(:ref_path) { 'refs/heads/master' }
+    let(:limit) { nil }
+    let_it_be(:default_branch) { false }
+    let(:start_date) { '2020-03-09' }
+    let(:end_date) { '2020-03-10' }
+    let(:sort) { true }
+
+    let_it_be(:rspec_coverage_1) { create_daily_coverage('rspec', 79.0, '2020-03-09') }
+    let_it_be(:karma_coverage_1) { create_daily_coverage('karma', 89.0, '2020-03-09') }
+    let_it_be(:rspec_coverage_2) { create_daily_coverage('rspec', 95.0, '2020-03-10') }
+    let_it_be(:karma_coverage_2) { create_daily_coverage('karma', 92.0, '2020-03-10') }
+    let_it_be(:rspec_coverage_3) { create_daily_coverage('rspec', 97.0, '2020-03-11') }
+    let_it_be(:karma_coverage_3) { create_daily_coverage('karma', 99.0, '2020-03-11') }
+
+    let(:finder) { described_class.new(params: params, current_user: current_user) }
+
+    let(:params) do
+      {
+        project: project,
+        coverage: true,
+        ref_path: ref_path,
+        start_date: start_date,
+        end_date: end_date,
+        limit: limit,
+        sort: sort
+      }
+    end
+
+    subject(:coverages) { finder.execute }
+
+    context 'when params are provided' do
+      context 'when current user is not allowed to read data' do
+        let(:current_user) { user_without_permission }
+
+        it 'returns an empty collection' do
+          expect(coverages).to be_empty
+        end
+      end
+
+      context 'when current user is allowed to read data' do
+        let(:current_user) { user_with_permission }
+
+        it 'returns matching coverages within the given date range' do
+          expect(coverages).to match_array([
+            karma_coverage_2,
+            rspec_coverage_2,
+            karma_coverage_1,
+            rspec_coverage_1
+          ])
+        end
+
+        context 'when ref_path is nil' do
+          let(:default_branch) { true }
+          let(:ref_path) { nil }
+
+          it 'returns coverages for the default branch' do
+            rspec_coverage_4 = create_daily_coverage('rspec', 66.0, '2020-03-10')
+
+            expect(coverages).to contain_exactly(rspec_coverage_4)
+          end
+        end
+
+        context 'when limit is specified' do
+          let(:limit) { 2 }
+
+          it 'returns limited number of matching coverages within the given date range' do
+            expect(coverages).to match_array([
+              karma_coverage_2,
+              rspec_coverage_2
+            ])
+          end
+        end
+      end
+    end
+  end
+
+  private
+
+  def create_daily_coverage(group_name, coverage, date)
+    create(
+      :ci_daily_build_group_report_result,
+      project: project,
+      ref_path: ref_path || 'feature-branch',
+      group_name: group_name,
+      data: { 'coverage' => coverage },
+      date: date,
+      default_branch: default_branch
+    )
+  end
+end