rakefile.erb in gapic-generator-cloud-0.5.0

- old
+ new

@@ -9,9 +9,10 @@
 RuboCop::RakeTask.new
 
 require "rake/testtask"
 desc "Run tests."
 Rake::TestTask.new do |t|
+  t.libs << "test"
   t.test_files = FileList["test/**/*_test.rb"]
   t.warning = false
 end
 
 namespace :test do