Use Rake DSL instead of commands of `FileUtils`

- Respect `--verbose(-v)` and `--dry-run(-n)` options.
- Silence warnings to keyword arguments on Ruby 2.7.

1 files changed, 4 insertions, 4 deletions

diff --git a/mrbgems/mruby-test/mrbgem.rake b/mrbgems/mruby-test/mrbgem.rake
index bf90e0791..2f4d0287a 100644
--- a/mrbgems/mruby-test/mrbgem.rake
+++ b/mrbgems/mruby-test/mrbgem.rake
@@ -40,7 +40,7 @@ MRuby::Gem::Specification.new('mruby-test') do |spec|
 
     file test_rbobj => g.test_rbireps
     file g.test_rbireps => [g.test_rbfiles, build.mrbcfile].flatten do |t|
-      FileUtils.mkdir_p File.dirname(t.name)
+      mkdir_p File.dirname(t.name)
       open(t.name, 'w') do |f|
         g.print_gem_test_header(f)
         test_preload = g.test_preload and [g.dir, MRUBY_ROOT].map {|dir|
@@ -152,12 +152,12 @@ MRuby::Gem::Specification.new('mruby-test') do |spec|
   active_gem_list = if File.exist? active_gems_path
                       File.read active_gems_path
                     else
-                      FileUtils.mkdir_p File.dirname(active_gems_path)
+                      mkdir_p File.dirname(active_gems_path)
                       nil
                     end
   current_gem_list = build.gems.map(&:name).join("\n")
   task active_gems_path do |_t|
-    FileUtils.mkdir_p File.dirname(active_gems_path)
+    mkdir_p File.dirname(active_gems_path)
     File.write active_gems_path, current_gem_list
   end
   file clib => active_gems_path if active_gem_list != current_gem_list
@@ -165,7 +165,7 @@ MRuby::Gem::Specification.new('mruby-test') do |spec|
   file mlib => clib
   file clib => [build.mrbcfile, __FILE__] do |_t|
     _pp "GEN", "*.rb", "#{clib.relative_path}"
-    FileUtils.mkdir_p File.dirname(clib)
+    mkdir_p File.dirname(clib)
     open(clib, 'w') do |f|
       f.puts %Q[/*]
       f.puts %Q[ * This file contains a list of all]