6 files changed, 42 insertions, 4 deletions
diff --git a/ruby/Rakefile b/ruby/Rakefile
index ff09cebb..013bc99a 100644
--- a/ruby/Rakefile
+++ b/ruby/Rakefile
@@ -87,6 +87,7 @@ end
 # Proto for tests.
 genproto_output << "tests/generated_code.rb"
 genproto_output << "tests/test_import.rb"
+genproto_output << "tests/test_ruby_package.rb"
 file "tests/generated_code.rb" => "tests/generated_code.proto" do |file_task|
   sh "../src/protoc --ruby_out=. tests/generated_code.proto"
 end
@@ -95,6 +96,10 @@ file "tests/test_import.rb" => "tests/test_import.proto" do |file_task|
   sh "../src/protoc --ruby_out=. tests/test_import.proto"
 end
 
+file "tests/test_ruby_package.rb" => "tests/test_ruby_package.proto" do |file_task|
+  sh "../src/protoc --ruby_out=. tests/test_ruby_package.proto"
+end
+
 task :genproto => genproto_output
 
 task :clean do
diff --git a/ruby/lib/google/protobuf.rb b/ruby/lib/google/protobuf.rb
index 9b8d8231..4a805e88 100644
--- a/ruby/lib/google/protobuf.rb
+++ b/ruby/lib/google/protobuf.rb
@@ -60,8 +60,8 @@ module Google
       msg.to_proto
     end
 
-    def self.encode_json(msg)
-      msg.to_json
+    def self.encode_json(msg, options = {})
+      msg.to_json(options)
     end
 
     def self.decode(klass, proto)
diff --git a/ruby/lib/google/protobuf/message_exts.rb b/ruby/lib/google/protobuf/message_exts.rb
index e10266ba..f432f89f 100644
--- a/ruby/lib/google/protobuf/message_exts.rb
+++ b/ruby/lib/google/protobuf/message_exts.rb
@@ -40,8 +40,8 @@ module Google
       module ClassMethods
       end
 
-      def to_json
-        self.class.encode_json(self)
+      def to_json(options = {})
+        self.class.encode_json(self, options)
       end
 
       def to_proto
diff --git a/ruby/tests/encode_decode_test.rb b/ruby/tests/encode_decode_test.rb
index 09581ab0..2bd9b98b 100644
--- a/ruby/tests/encode_decode_test.rb
+++ b/ruby/tests/encode_decode_test.rb
@@ -60,4 +60,28 @@ class EncodeDecodeTest < Test::Unit::TestCase
     to = A::B::C::TestMessage.encode(m.oneof_msg)
     assert_equal '', to
   end
+
+  def test_encode_json
+    msg = A::B::C::TestMessage.new({ optional_int32: 22 })
+    json = msg.to_json
+
+    to = A::B::C::TestMessage.decode_json(json)
+    assert_equal to.optional_int32, 22
+
+    msg = A::B::C::TestMessage.new({ optional_int32: 22 })
+    json = msg.to_json({ preserve_proto_fieldnames: true })
+
+    assert_match 'optional_int32', json
+
+    to = A::B::C::TestMessage.decode_json(json)
+    assert_equal 22, to.optional_int32
+
+    msg = A::B::C::TestMessage.new({ optional_int32: 22 })
+    json = A::B::C::TestMessage.encode_json(
+      msg,
+      { preserve_proto_fieldnames: true, emit_defaults: true }
+    )
+
+    assert_match 'optional_int32', json
+  end
 end
diff --git a/ruby/tests/generated_code_test.rb b/ruby/tests/generated_code_test.rb
index b92b0462..431d681b 100644
--- a/ruby/tests/generated_code_test.rb
+++ b/ruby/tests/generated_code_test.rb
@@ -5,6 +5,7 @@ $LOAD_PATH.unshift(File.expand_path(File.dirname(__FILE__)))
 
 require 'generated_code_pb'
 require 'test_import_pb'
+require 'test_ruby_package_pb'
 require 'test/unit'
 
 class GeneratedCodeTest < Test::Unit::TestCase
@@ -15,5 +16,6 @@ class GeneratedCodeTest < Test::Unit::TestCase
     # aspect of the extension (basic.rb is for that).
     m = A::B::C::TestMessage.new()
     m2 = FooBar::TestImportedMessage.new()
+    m3 = A::B::TestRubyPackageMessage.new()
   end
 end
diff --git a/ruby/tests/test_ruby_package.proto b/ruby/tests/test_ruby_package.proto
new file mode 100644
index 00000000..b8725620
--- /dev/null
+++ b/ruby/tests/test_ruby_package.proto
@@ -0,0 +1,7 @@
+syntax = "proto3";
+
+package foo_bar;
+
+option ruby_package = "A.B";
+
+message TestRubyPackageMessage {}