chore: Rubocop lint Style/MissingRespondToMissing (#930)

.rubocop_todo.yml

@@ -76,11 +76,6 @@ Style/GuardClause:
     - 'lib/faraday/request/url_encoded.rb'
     - 'lib/faraday/utils/headers.rb'
 
-# Offense count: 1
-Style/MissingRespondToMissing:
-  Exclude:
-    - 'lib/faraday.rb'
-
 # Offense count: 1
 Style/MultipleComparison:
   Exclude:

lib/faraday.rb

@@ -102,7 +102,7 @@ module Faraday
       @default_adapter = adapter
     end
 
-    def respond_to?(symbol, include_private = false)
+    def respond_to_missing?(symbol, include_private = false)
       default_connection.respond_to?(symbol, include_private) || super
     end
 

spec/faraday_spec.rb

@@ -24,6 +24,12 @@ RSpec.describe Faraday do
       )
     end
 
+    it 'proxied methods can be accessed' do
+      allow(mock_connection).to receive(:this_should_be_proxied)
+
+      expect(Faraday.method(:this_should_be_proxied)).to be_a(Method)
+    end
+
     after do
       Faraday.default_connection = nil
     end