2 files changed, 110 insertions, 0 deletions
diff --git a/qa/tasks/ci.rake b/qa/tasks/ci.rake
new file mode 100644
index 00000000000..44a794d9f94
--- /dev/null
+++ b/qa/tasks/ci.rake
@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+require_relative "helpers/util"
+
+# rubocop:disable Rails/RakeEnvironment
+namespace :ci do
+  include Task::Helpers::Util
+
+  desc "Detect changes and populate test variables for selective test execution and feature flag testing"
+  task :detect_changes, [:env_file] do |_, args|
+    env_file = args[:env_file]
+    abort("ERROR: Path for environment file must be provided") unless env_file
+
+    diff = mr_diff
+    labels = mr_labels
+
+    qa_changes = QA::Tools::Ci::QaChanges.new(diff, labels)
+    logger = qa_changes.logger
+
+    logger.info("Analyzing merge request changes")
+    # skip running tests when only quarantine changes detected
+    if qa_changes.quarantine_changes?
+      logger.info(" merge request contains only quarantine changes, e2e test execution will be skipped!")
+      append_to_file(env_file, <<~TXT)
+        QA_SKIP_ALL_TESTS=true
+      TXT
+      next
+    end
+
+    tests = qa_changes.qa_tests
+    if qa_changes.framework_changes? # run all tests when framework changes detected
+      logger.info(" merge request contains qa framework changes, full test suite will be executed")
+      append_to_file(env_file, <<~TXT)
+        QA_FRAMEWORK_CHANGES=true
+      TXT
+    elsif tests
+      logger.info(" detected following specs to execute: '#{tests}'")
+    else
+      logger.info(" no specific specs to execute detected")
+    end
+
+    # always check all test suites in case a suite is defined but doesn't have any runnable specs
+    suites = QA::Tools::Ci::NonEmptySuites.new(tests).fetch
+    append_to_file(env_file, <<~TXT)
+      QA_TESTS='#{tests}'
+      QA_SUITES='#{suites}'
+    TXT
+
+    # check if mr contains feature flag changes
+    feature_flags = QA::Tools::Ci::FfChanges.new(diff).fetch
+    append_to_file(env_file, <<~TXT)
+      QA_FEATURE_FLAGS='#{feature_flags}'
+    TXT
+  end
+
+  desc "Download test results from downstream pipeline"
+  task :download_test_results, [:trigger_name, :test_report_job_name, :report_path] do |_, args|
+    QA::Tools::Ci::TestResults.get(args[:trigger_name], args[:test_report_job_name], args[:report_path])
+  end
+end
+# rubocop:enable Rails/RakeEnvironment
diff --git a/qa/tasks/helpers/util.rb b/qa/tasks/helpers/util.rb
new file mode 100644
index 00000000000..f8eb9b02f72
--- /dev/null
+++ b/qa/tasks/helpers/util.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+module Task
+  module Helpers
+    module Util
+      include ::QA::Support::API
+
+      # Append text to file
+      #
+      # @param [String] path
+      # @param [String] text
+      # @return [void]
+      def append_to_file(path, text)
+        File.open(path, "a") { |f| f.write(text) }
+      end
+
+      # Merge request labels
+      #
+      # @return [Array]
+      def mr_labels
+        ENV["CI_MERGE_REQUEST_LABELS"]&.split(',') || []
+      end
+
+      # Merge request changes
+      #
+      # @return [Array<Hash>]
+      def mr_diff
+        mr_iid = ENV["CI_MERGE_REQUEST_IID"]
+        return [] unless mr_iid
+
+        gitlab_endpoint = ENV["CI_API_V4_URL"]
+        gitlab_token = ENV["PROJECT_TOKEN_FOR_CI_SCRIPTS_API_USAGE"]
+        project_id = ENV["CI_MERGE_REQUEST_PROJECT_ID"]
+
+        response = get(
+          "#{gitlab_endpoint}/projects/#{project_id}/merge_requests/#{mr_iid}/changes",
+          headers: { "PRIVATE-TOKEN" => gitlab_token }
+        )
+
+        parse_body(response).fetch(:changes, []).map do |change|
+          {
+            path: change[:new_path],
+            **change.slice(:new_file, :deleted_file, :diff)
+          }
+        end
+      end
+    end
+  end
+end