From 62ca1ae260e4ffff60930af2d42bd8b8b15128cc Mon Sep 17 00:00:00 2001
From: Andrei Eres <andrei.eres@ya.ru>
Date: Mon, 22 Mar 2021 15:13:47 +0300
Subject: [PATCH] Add names for department to Registry

---
 lib/rubocop/cop/registry.rb       | 4 ++++
 spec/rubocop/cop/registry_spec.rb | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/lib/rubocop/cop/registry.rb b/lib/rubocop/cop/registry.rb
index 76b7a313910..492bbd21321 100644
--- a/lib/rubocop/cop/registry.rb
+++ b/lib/rubocop/cop/registry.rb
@@ -184,6 +184,10 @@ def names
         cops.map(&:cop_name)
       end
 
+      def names_for_department(department)
+        cops.select { |cop| cop.department == department.to_sym }.map(&:cop_name)
+      end
+
       def ==(other)
         cops == other.cops
       end
diff --git a/spec/rubocop/cop/registry_spec.rb b/spec/rubocop/cop/registry_spec.rb
index 6ed390043f5..75c15430b6d 100644
--- a/spec/rubocop/cop/registry_spec.rb
+++ b/spec/rubocop/cop/registry_spec.rb
@@ -350,4 +350,11 @@
       expect(registry.department?('Foo')).to be false
     end
   end
+
+  describe 'names_for_department' do
+    it 'returns array of cops for specified department' do
+      expect(registry.names_for_department('Lint'))
+        .to eq %w[Lint/BooleanSymbol Lint/DuplicateMethods]
+    end
+  end
 end