Add tracks attr_reader to Configuration (#664)

lib/rack/attack/configuration.rb

@@ -19,7 +19,7 @@ module Rack
         end
       end
 
-      attr_reader :safelists, :blocklists, :throttles, :anonymous_blocklists, :anonymous_safelists
+      attr_reader :safelists, :blocklists, :throttles, :tracks, :anonymous_blocklists, :anonymous_safelists
       attr_accessor :blocklisted_responder, :throttled_responder, :throttled_response_retry_after_header
 
       attr_reader :blocklisted_response, :throttled_response # Keeping these for backwards compatibility

spec/configuration_spec.rb

@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+require_relative "spec_helper"
+
+describe Rack::Attack::Configuration do
+  subject { Rack::Attack::Configuration.new }
+
+  describe 'attributes' do
+    it 'exposes the safelists attribute' do
+      _(subject.safelists).must_equal({})
+    end
+
+    it 'exposes the blocklists attribute' do
+      _(subject.blocklists).must_equal({})
+    end
+
+    it 'exposes the throttles attribute' do
+      _(subject.throttles).must_equal({})
+    end
+
+    it 'exposes the tracks attribute' do
+      _(subject.tracks).must_equal({})
+    end
+
+    it 'exposes the anonymous_blocklists attribute' do
+      _(subject.anonymous_blocklists).must_equal([])
+    end
+
+    it 'exposes the anonymous_safelists attribute' do
+      _(subject.anonymous_safelists).must_equal([])
+    end
+  end
+end