Rakefile in fluent-plugin-mqtt-io-0.2.3 vs Rakefile in fluent-plugin-mqtt-io-0.3.0

@@ -2,9 +2,9 @@
 require "rake/testtask"
 
 Rake::TestTask.new(:test) do |t|
   t.libs << "test"
   t.libs << "lib"
-  t.test_files = FileList['test/**/*_test.rb']
+  t.test_files = FileList['test/**/test_*.rb']
 end
 
 task :default => :test