Rakefile in lxi_rb-0.6.3 vs Rakefile in lxi_rb-0.6.4

@@ -5,10 +5,10 @@
 Dir.glob('tasks/*.rake').each { |r| import r }
 
 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', 'spec/**/*_spec.rb']
 end
 
 require 'rubocop/rake_task'
 
 RuboCop::RakeTask.new