Added test to yandex no city and no town case

test/fixtures/yandex_no_city_and_town

+{
+   "response":{
+      "GeoObjectCollection":{
+         "metaDataProperty":{
+            "GeocoderResponseMetaData":{
+               "request":"57.423359,55.892596",
+               "found":"3",
+               "results":"10",
+               "Point":{
+                  "pos":"57.423359 55.892596"
+               }
+            }
+         },
+         "featureMember":[
+            {
+               "GeoObject":{
+                  "metaDataProperty":{
+                     "GeocoderMetaData":{
+                        "kind":"area",
+                        "text":"Россия, республика Башкортостан, Караидельский район",
+                        "precision":"other",
+                        "AddressDetails":{
+                           "Country":{
+                              "AddressLine":"республика Башкортостан, Караидельский район",
+                              "CountryNameCode":"RU",
+                              "CountryName":"Россия",
+                              "AdministrativeArea":{
+                                 "AdministrativeAreaName":"республика Башкортостан",
+                                 "SubAdministrativeArea":{
+                                    "SubAdministrativeAreaName":"Караидельский район"
+                                 }
+                              }
+                           }
+                        }
+                     }
+                  },
+                  "description":"республика Башкортостан, Россия",
+                  "name":"Караидельский район",
+                  "boundedBy":{
+                     "Envelope":{
+                        "lowerCorner":"56.231384 55.462814",
+                        "upperCorner":"57.705348 56.076117"
+                     }
+                  },
+                  "Point":{
+                     "pos":"57.423359 55.892596"
+                  }
+               }
+            },
+            {
+               "GeoObject":{
+                  "metaDataProperty":{
+                     "GeocoderMetaData":{
+                        "kind":"province",
+                        "text":"Россия, республика Башкортостан",
+                        "precision":"other",
+                        "AddressDetails":{
+                           "Country":{
+                              "AddressLine":"республика Башкортостан",
+                              "CountryNameCode":"RU",
+                              "CountryName":"Россия",
+                              "AdministrativeArea":{
+                                 "AdministrativeAreaName":"республика Башкортостан"
+                              }
+                           }
+                        }
+                     }
+                  },
+                  "description":"Россия",
+                  "name":"республика Башкортостан",
+                  "boundedBy":{
+                     "Envelope":{
+                        "lowerCorner":"53.157475 51.571991",
+                        "upperCorner":"60.001577 56.533651"
+                     }
+                  },
+                  "Point":{
+                     "pos":"56.579526 54.127354"
+                  }
+               }
+            },
+            {
+               "GeoObject":{
+                  "metaDataProperty":{
+                     "GeocoderMetaData":{
+                        "kind":"country",
+                        "text":"Россия",
+                        "precision":"other",
+                        "AddressDetails":{
+                           "Country":{
+                              "CountryNameCode":"RU",
+                              "CountryName":"Россия"
+                           }
+                        }
+                     }
+                  },
+                  "name":"Россия",
+                  "boundedBy":{
+                     "Envelope":{
+                        "lowerCorner":"19.641673 36.84312",
+                        "upperCorner":"179.999997 81.848739"
+                     }
+                  },
+                  "Point":{
+                     "pos":"37.617761 55.755773"
+                  }
+               }
+            }
+         ]
+      }
+   }
+}
\ No newline at end of file

test/result_test.rb

@@ -4,18 +4,36 @@ require 'test_helper'
 class ResultTest < Test::Unit::TestCase
 
   def test_result_has_required_attributes
-    all_lookups.each do |l|
-      Geocoder::Configuration.lookup = l
+    Geocoder::Lookup.all_services_except_test.each do |l|
+      Geocoder.configure(:lookup => l)
+      set_api_key!(l)
       result = Geocoder.search([45.423733, -75.676333]).first
       assert_result_has_required_attributes(result)
     end
   end
 
 
+  # Redefine Yandex to work with fixture without city and town
+  class Yandex
+    private
+    def default_fixture_filename
+      "yandex_no_city_and_town"
+    end
+  end
+
+
+  def test_yandex_result_without_city_has_not_raises_exception
+    Geocoder.configure(:lookup => :yandex)
+    set_api_key!(:yandex)
+    result = Geocoder.search([45.423733, -75.676333]).first
+    assert result.city, ""
+  end
+
+
   private # ------------------------------------------------------------------
 
   def assert_result_has_required_attributes(result)
-    m = "Lookup #{Geocoder::Configuration.lookup} does not support %s attribute."
+    m = "Lookup #{Geocoder.config.lookup} does not support %s attribute."
     assert result.coordinates.is_a?(Array),    m % "coordinates"
     assert result.latitude.is_a?(Float),       m % "latitude"
     assert result.longitude.is_a?(Float),      m % "longitude"