```ruby
require 'simplecov'
require 'minitest/rg'

SimpleCov.minimum_coverage_by_file 100
SimpleCov.start do
  add_filter '/test/'
end

require 'minitest/autorun'
require 'mocha/minitest'
require 'pry'
require 'nokogiri'
require 'jekyll_picture_tag'
require_relative 'stubs'

# This module gives us a basic setup to run our tests.
module TestHelper
  TEST_DIR = __dir__
  include Stubs

  def nomarkdown_wrapped?(string)
    # rubocop:disable Style/RegexpLiteral
    start  = /^\{::nomarkdown\}/
    finish = /\{:\/nomarkdown\}$/
    # rubocop:enable Style/RegexpLiteral

    string =~ start &&
      string =~ finish &&
      !string.include?("\n")
  end

  # Checks Nokogiri's html errors. Since it apparently still doesn't know about
  # HTML5, we have to ignore 'invalid tag errors' which have an 801 code (I
  # think):
  def errors_ok?(output)
    output.errors.none? { |e| e.code != 801 }
  end

  def aspect_float(width, height)
    width.to_f / height
  end

  def temp_dir(child_path = '')
    File.join '/tmp/jpt', child_path
  end
end
```

Add unlimited descendents to temp_dir test helper
user
```ruby
require 'simplecov'
require 'minitest/rg'

SimpleCov.minimum_coverage_by_file 100
SimpleCov.start do
  add_filter '/test/'
end

require 'minitest/autorun'
require 'mocha/minitest'
require 'pry'
require 'nokogiri'
require 'jekyll_picture_tag'
require_relative 'stubs'

# This module gives us a basic setup to run our tests.
module TestHelper
  TEST_DIR = __dir__
  include Stubs

  def nomarkdown_wrapped?(string)
    # rubocop:disable Style/RegexpLiteral
    start  = /^\{::nomarkdown\}/
    finish = /\{:\/nomarkdown\}$/
    # rubocop:enable Style/RegexpLiteral

    string =~ start &&
      string =~ finish &&
      !string.include?("\n")
  end

  # Checks Nokogiri's html errors. Since it apparently still doesn't know about
  # HTML5, we have to ignore 'invalid tag errors' which have an 801 code (I
  # think):
  def errors_ok?(output)
    output.errors.none? { |e| e.code != 801 }
  end

  def aspect_float(width, height)
    width.to_f / height
  end

  def temp_dir(*descendents)
    File.join '/tmp/jpt', *descendents
  end
end
```
assistant