Rakefile in rmagick-2.14.0 vs Rakefile in rmagick-2.15.0

@@ -19,11 +19,11 @@
   def base
     File.expand_path('..', __FILE__)
   end
 end
 
-desc 'abort when repo nto clean or has uncommited code'
+desc 'abort when repo is not clean or has uncommited code'
 task :assert_clean_repo do
   sh('git diff --exit-code')
   abort 'Git repo not clean' unless $CHILD_STATUS.success?
   sh('git diff-index --quiet --cached HEAD')
   abort 'Git repo not commited' unless $CHILD_STATUS.success?
@@ -163,23 +163,26 @@
   end
 end
 
 require 'rake/extensiontask'
 require 'rake/testtask'
+require 'rspec/core/rake_task'
+RSpec::Core::RakeTask.new(:spec)
 
 Rake::ExtensionTask.new('RMagick2') do |ext|
   ext.ext_dir = 'ext/RMagick'
 end
 
 Rake::TestTask.new(:test) do |t|
   t.libs << 'test'
 end
 
 task :test => :compile
+task :spec => :compile
 
 if ENV['STYLE_CHECKS']
   require 'rubocop/rake_task'
   RuboCop::RakeTask.new
-  task :default => [:test, :rubocop]
+  task :default => [:spec, :test, :rubocop]
 else
-  task :default => :test
+  task :default => [:spec, :test]
 end