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: translations_test.rb
    path of file: ./repos/best-practices-badge/test/models
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

# Copyright 2015-2017, the Linux Foundation, IDA, and the
# OpenSSF Best Practices badge contributors
# SPDX-License-Identifier: MIT

require 'test_helper'

class TranslationsTest < ActiveSupport::TestCase
  test 'Translations.for_js should not have nil values' do
    assert_equal '', key_with_nil_value(Translations.for_js)
  end

  test 'Translations.for_js has same keys as projects.misc.in_javascript' do
    I18n.available_locales.each do |l|
      assert_equal I18n.t('.projects.misc.in_javascript').keys.sort,
                   Translations.for_js[l].keys.sort
    end
  end

  # What tags & attributes are allowed?
  ACCEPTABLE_TAGS =
    %w[h1 h2 h3 a strong em i b small tt ol ul li br p span div].freeze
  # Class can cause trouble, but we need it for glyphicons, etc.
  ACCEPTABLE_ATTRS = %w[href name class target rel id aria-hidden].freeze

  def sanitize_html(text)
    html_sanitizer = Rails::Html::WhiteListSanitizer.new
    html_sanitizer.sanitize(
      text, tags: ACCEPTABLE_TAGS,
            attributes: ACCEPTABLE_ATTRS
    ).to_s
  end

  def regularize_html(text)
    regularizer = Rails::Html::TargetScrubber.new
    Loofah.fragment(text).scrub!(regularizer).to_s
  end

  # Return true if x is a "simple" (non-compound) non-string type
  def simple_type(x)
    x.is_a?(Symbol) || x.is_a?(Numeric) || x.in?([true, false, nil]) ||
      x.is_a?(Proc)
  end

  # Is the HTML string acceptable?  It needs to NOT have common mistakes,
  # *and* have only 
    
  def acceptable_html_string(text)
    return true if text.exclude?('<') # Can't be a problem, no '<'

    # First, detect common mistakes.
    # Require HTML tags to start in a lowercase Latin letter.
    # This is in part a regression test; it prevents </a> where "a"
    # is the Cyrillic letter instead of the Latin letter.
    # HTML doesn't care about upper vs. lower case,
    # but it's better to be consistent, and there's a minor
    # compression advantage as described here:
    # http://www.websiteoptimization.com/speed/tweak/lowercase/
    return false if %r{<[^a-z\/]}.match?(text) || %r{<\/[^a-z]}.match?(text)
    return false if text.include?('href = ') || text.include?('class = ')
    return false if text.include?('target = ')
    return false if /(href|class|target)=[^"']/.match?(text)
    return false if /(href|class|target)=["'] /.match?(text)
    # target= must have rel="noopener"; just target= isn't enough.
    return false if text.include?('target="_blank">')

    # Now ensure that the HTML only has the tags and attributes we permit.
    # The translators are considered trusted, but nevertheless this
    # limits problems if their accounts are subverted.
    # Translation text is okay iff the results of "sanitizing" it are
    # same as when we simply "regularize" the text without sanitizing it.
    sanitized = sanitize_html(text)
    regularized = regularize_html(text)
    if sanitized != regularized
      puts 'Error, HTML has something not permitted. Regularized:'
      puts regularized
      puts 'Sanitized:'
      puts sanitized
    end
    sanitized == regularized
  end