test_table13.rb in write_xlsx-0.87.0

- old
+ new

@@ -1,10 +1,10 @@
 # -*- coding: utf-8 -*-
 require 'helper'
 require 'write_xlsx'
 require 'stringio'
 
-class TestTable13 < Test::Unit::TestCase
+class TestTable13 < Minitest::Test
   def setup
     workbook = WriteXLSX.new(StringIO.new)
     @worksheet = workbook.add_worksheet
   end
 