Make testing suite running and pass in Windows

thanks @bf4 give many help and suggestion, original PR rails-api#1014

Gemfile

@@ -15,3 +15,6 @@ if version == "master"
 else
   gem "rails", "~> #{version}.0"
 end
+
+# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
+gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

test/generators/serializer_generator_test.rb

@@ -46,7 +46,11 @@ def test_generates_attributes_and_associations
   def test_with_no_attributes_does_not_add_extra_space
     run_generator ["account"]
     assert_file "app/serializers/account_serializer.rb" do |content|
-      assert_no_match /\n\nend/, content
+      if RUBY_PLATFORM =~ /mingw/
+        assert_no_match /\r\n\r\nend/, content
+      else
+        assert_no_match /\n\nend/, content
+      end
     end
   end
 end