Rakefile in mojo_magick-0.5.6 vs Rakefile in mojo_magick-0.5.7

@@ -1,20 +1,13 @@
 require 'rubygems'
+require 'rake/testtask'
 
-task 'default' => :test
-
-desc "Default: run tests"
-task :test do
-  require 'simplecov'
-  SimpleCov.start
-  require 'rake/runtest'
-  files = Dir.glob(File.join(File.dirname(__FILE__), 'test/*_test.rb'))
-  files.each do |f|
-    Rake.run_tests f
-  end
+task default: 'test'
+Rake::TestTask.new do |task|
+  task.pattern = 'test/*_test.rb'
 end
 
-desc "Build gem"
+desc 'Build gem'
 task :build do
   `rm mojo_magick-*.gem`
-  puts `gem build mojo_magick.gemspec`  
+  puts `gem build mojo_magick.gemspec`
 end