Rakefile in ruby-dnn-0.8.7 vs Rakefile in ruby-dnn-0.8.8

@@ -1,18 +1,19 @@
 require "bundler/gem_tasks"
 require "rake/testtask"
 
 Rake::TestTask.new(:test) do |t|
   t.libs << "test"
+  t.libs << "ext"
   t.libs << "lib"
   t.test_files = FileList["test/*_test.rb"]
 end
 
 task :build_dataset_loader do
-  sh "cd lib/dnn/ext/cifar10_loader; ruby extconf.rb; make"
+  sh "cd ext/cifar10_loader; ruby extconf.rb; make"
 end
 
 task :build_image_io do
-  sh "cd lib/dnn/ext/rb_stb_image; ruby extconf.rb; make"
+  sh "cd ext/rb_stb_image; ruby extconf.rb; make"
 end
 
 task :default => [:test, :build_dataset_loader, :build_image_io]