Fix incorrect extra attribute names in ipinfo_io result

lib/geocoder/results/ipinfo_io.rb

@@ -8,7 +8,7 @@ module Geocoder::Result
     end
 
     def coordinates
-      @data['loc'].split(",").map(&:to_f)
+      @data['loc'].to_s.split(",").map(&:to_f)
     end
 
     def city
@@ -36,7 +36,7 @@ module Geocoder::Result
     end
 
     def self.response_attributes
-      %w['ip', 'region', 'postal']
+      %w(ip region postal)
     end
 
     response_attributes.each do |a|

test/unit/lookups/ipinfo_io_test.rb

@@ -22,4 +22,12 @@ class IpinfoIoTest < GeocoderTestCase
     assert_equal 0.0, result.latitude
     assert_equal "127.0.0.1", result.ip
   end
+
+  def test_ipinfo_io_extra_attributes
+    Geocoder.configure(:ip_lookup => :ipinfo_io, :use_https => true)
+    result = Geocoder.search("8.8.8.8").first
+    assert_equal "8.8.8.8", result.ip
+    assert_equal "California", result.region
+    assert_equal "94040", result.postal
+  end
 end