test/helper.rb in write_xlsx-0.86.0 vs test/helper.rb in write_xlsx-0.87.0

@@ -6,11 +6,11 @@
 rescue Bundler::BundlerError => e
   $stderr.puts e.message
   $stderr.puts "Run `bundle install` to install missing gems"
   exit e.status_code
 end
-require 'test-unit'
+require 'minitest/autorun'
 
 $LOAD_PATH.unshift(File.dirname(__FILE__))
 $LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 require 'write_xlsx'
 require 'stringio'
@@ -24,10 +24,10 @@
   def set_default_xf_indices #:nodoc:
     @formats.formats.each { |format| format.get_xf_index }
   end
 end
 
-class Test::Unit::TestCase
+class Minitest::Test
   def setup_dir_var
     @test_dir = File.dirname(__FILE__)
     @perl_output  = File.join(@test_dir, 'perl_output')
     @regression_output  = File.join(@test_dir, 'regression', 'xlsx_files')
     @io = StringIO.new