Add mock and test for get_record

lib/fog/dnsimple/requests/dns/get_record.rb

@@ -29,6 +29,16 @@ module Fog
         end
 
       end
+
+      class Mock
+
+        def get_record(domain, record_id)
+          response = Excon::Response.new
+          response.status = 200
+          response.body = self.data[:records][domain].detect { |record| record["record"]["id"] == record_id }
+          response
+        end
+      end
     end
   end
 end

tests/dnsimple/requests/dns/dns_tests.rb

@@ -65,6 +65,15 @@ Shindo.tests('Fog::DNS[:dnsimple] | DNS requests', ['dnsimple', 'dns']) do
       end
     end
 
+    test("get a record") do
+      domain = @domain["name"]
+      record_id = @record["id"]
+
+      response = Fog::DNS[:dnsimple].get_record(domain, record_id)
+
+      (response.status == 200) and (@record == response.body["record"])
+    end
+
     test("update a record") do
       domain = @domain["name"]
       record_id = @record["id"]