You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: transliterator_test.rb
    path of file: ./repos/stackneveroverflow/vendor/bundle/ruby/2.3.0/gems/charlock_holmes-0.7.3/test
    
    the code of the file until where you have to start completion: # encoding: utf-8
require File.expand_path("../helper", __FILE__)

class TransliteratorTest < MiniTest::Test
  DON
    
    def test_transliterate_text_must_be_utf8_or_ascii
      trans_id = "Any-NFD; Any-Latin; Latin-ASCII; Any-NFC"
      txt = "blah blah blah".force_encoding('big5')

      assert_raises Encoding::CompatibilityError do
        trans(txt, trans_id)
      end

      txt.force_encoding('UTF-8')
      begin
        trans(txt, trans_id)
      rescue Encoding::CompatibilityError => e
        assert_nil e, "#{e.class.name} raised, expected not to"
      end