Test Lookup#results instead of Geocoder.query.

test/lookup_test.rb

@@ -5,8 +5,8 @@ class LookupTest < Test::Unit::TestCase
 
   def test_search_returns_empty_array_when_no_results
     street_lookups.each do |l|
-      Geocoder::Configuration.lookup = l
-      assert_equal [], Geocoder.search("no results"),
+      lookup = Geocoder.send(:get_lookup, l)
+      assert_equal [], lookup.send(:results, "no results"),
         "Lookup #{l} does not return empty array when no results."
     end
   end