Added unit test for PascalCasing package names in Ruby.
diff --git a/ruby/Rakefile b/ruby/Rakefile
index f6354e1..ba1cf4c 100644
--- a/ruby/Rakefile
+++ b/ruby/Rakefile
@@ -80,10 +80,15 @@
 
 # Proto for tests.
 genproto_output << "tests/generated_code.rb"
+genproto_output << "tests/test_import.rb"
 file "tests/generated_code.rb" => "tests/generated_code.proto" do |file_task|
   sh "../src/protoc --ruby_out=. tests/generated_code.proto"
 end
 
+file "tests/test_import.rb" => "tests/test_import.proto" do |file_task|
+  sh "../src/protoc --ruby_out=. tests/test_import.proto"
+end
+
 task :genproto => genproto_output
 
 task :clean do