Class: Capybara::Differ::Comparator

Inherits:
Object
  • Object
show all
Defined in:
lib/capybara-differ.rb

Instance Method Summary collapse

Constructor Details

#initialize(old_file_path, new_file_path, options = {}) ⇒ Comparator

Returns a new instance of Comparator.



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# File 'lib/capybara-differ.rb', line 11

def initialize(old_file_path, new_file_path, options = {})
  @old_file_path = old_file_path
  @new_file_path = new_file_path
  @options = options
end

Instance Method Details

#beautified_html(file) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/capybara-differ.rb', line 35

def beautified_html(file)
  raise ArgumentError, "#{file} not found" unless File.exist?(file)
  doc = Nokogiri.HTML(File.read(file))

  # Add line breaks to get diff by elements
  doc.traverse do |x|
    x.content = "\n#{x.content.strip}\n" if x.text?
  end

  node = doc.css(target_selector || default_selector)
  raise("Couldn't find the selector [#{target_selector}] in #{file}") if node.empty?
  beautified_html = HtmlBeautifier.beautify(node.to_html)

  beautified_html_path = file + '.beauty'
  File.write(beautified_html_path, beautified_html)
  beautified_html_path
end

#compare ⇒ Object 



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# File 'lib/capybara-differ.rb', line 17

def compare
  if @old_file_path.nil? || @new_file_path.nil? || @old_file_path == @new_file_path
    puts "There is no history of snapshots"
    return ''
  end
  puts "Comparing two files" + (target_selector ? " with selector [#{target_selector}]" : '')
  old_beautified_html_path = beautified_html(@old_file_path)
  new_beautified_html_path = beautified_html(@new_file_path)
  if use_diffy?
    puts "  #{@old_file_path}\n  #{@new_file_path}" unless diffy_options[:include_diff_info]
    diff = Diffy::Diff.new(old_beautified_html_path, new_beautified_html_path, diffy_options.merge(source: 'files'))
    diff.to_s(diffy_options.fetch(:format, :color))
  else
    cmd = "git diff --no-index --color-words --word-diff-regex='\w+|[^[:space:]=\"<>]+' #{old_beautified_html_path} #{new_beautified_html_path}"
    Open3.popen3(cmd) { |i, o, e| o.read }
  end
end