1 files changed, 31 insertions, 0 deletions
diff --git a/rubocop/cop/include_action_view_context.rb b/rubocop/cop/include_action_view_context.rb
new file mode 100644
index 00000000000..14662a33e95
--- /dev/null
+++ b/rubocop/cop/include_action_view_context.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+require_relative '../spec_helpers'
+
+module RuboCop
+  module Cop
+    # Cop that makes sure workers include `::Gitlab::ActionViewOutput::Context`, not `ActionView::Context`.
+    class IncludeActionViewContext < RuboCop::Cop::Cop
+      include SpecHelpers
+
+      MSG = 'Include `::Gitlab::ActionViewOutput::Context`, not `ActionView::Context`, for Rails 5.'.freeze
+
+      def_node_matcher :includes_action_view_context?, <<~PATTERN
+        (send nil? :include (const (const nil? :ActionView) :Context))
+      PATTERN
+
+      def on_send(node)
+        return if in_spec?(node)
+        return unless includes_action_view_context?(node)
+
+        add_offense(node.arguments.first, location: :expression)
+      end
+
+      def autocorrect(node)
+        lambda do |corrector|
+          corrector.replace(node.source_range, '::Gitlab::ActionViewOutput::Context')
+        end
+      end
+    end
+  end
+end