Add failing test

Author: dduugg

spec/data/sig_handler.rbi.txt

@@ -17,5 +17,8 @@ module Merge
 
     sig { returns(String) }
     def baz; end
+
+    sig { returns(Integer) }
+    def bat; end
   end
 end

spec/data/sig_handler.txt

@@ -354,5 +354,8 @@ module Merge
     def self.bar(a); end
 
     private def baz; end
+
+    # @return the result
+    def bat; end
   end
 end

spec/yard_sorbet/handlers/sig_handler_spec.rb

@@ -55,6 +55,14 @@
     it 'preserves the visibility of the original method' do
       expect(YARD::Registry.at('Merge::A#baz').visibility).to be(:private)
     end
+
+    it 'merges sig return type with return tag' do
+      expect(YARD::Registry.at('Merge::A#bat').tag(:return).types).to eq(['Integer'])
+    end
+
+    it 'merges return tag comment with sig return type' do
+      expect(YARD::Registry.at('Merge::A#bat').tag(:return).text).to eq('the result')
+    end
   end
 
   describe 'attaching to method' do