1 files changed, 38 insertions, 0 deletions
diff --git a/lib/gitlab/ci/reports/test_reports_comparer.rb b/lib/gitlab/ci/reports/test_reports_comparer.rb
new file mode 100644
index 00000000000..c0943f5a51a
--- /dev/null
+++ b/lib/gitlab/ci/reports/test_reports_comparer.rb
@@ -0,0 +1,38 @@
+module Gitlab
+  module Ci
+    module Reports
+      class TestReportsComparer
+        include Gitlab::Utils::StrongMemoize
+
+        attr_reader :base_reports, :head_reports
+
+        def initialize(base_reports, head_reports)
+          @base_reports = base_reports || TestReports.new
+          @head_reports = head_reports
+        end
+
+        def suite_comparers
+          strong_memoize(:suite_comparers) do
+            head_reports.test_suites.map do |name, test_suite|
+              TestSuiteComparer.new(name, base_reports.get_suite(name), test_suite)
+            end
+          end
+        end
+
+        def total_status
+          if suite_comparers.any? { |suite| suite.total_status == TestCase::STATUS_FAILED }
+            TestCase::STATUS_FAILED
+          else
+            TestCase::STATUS_SUCCESS
+          end
+        end
+
+        %w(total_count resolved_count failed_count).each do |method|
+          define_method(method) do
+            suite_comparers.sum { |suite| suite.public_send(method) } # rubocop:disable GitlabSecurity/PublicSend
+          end
+        end
+      end
+    end
+  end
+end