class Xml::C14n::RSpecMatchers::AnalogousMatcher

def diffable
  true
end

def failure_message
  index = 0
  @result.map do |hash|
    index += 1
    "DIFF #{index}: expected node: #{hash[:node1]}\n" \
           "        actual node  : #{hash[:node2]}\n" \
           "        diff from    : #{hash[:diff1]}\n" \
           "        diff to      : #{hash[:diff2]}\n"
  end.join("\n")
end

def failure_message_when_negated
  ["expected:", @target.to_s, "not be analogous with:",
   @expected.to_s].join("\n")
end

def initialize(expected)
  @expected = expected
  @result = nil
end

def matches?(target)
  @target = target
  @result = CompareXML.equivalent?(
    Nokogiri::XML(@target),
    Nokogiri::XML(@expected),
    { collapse_whitespace: true,
      ignore_attr_order: true,
      verbose: true },
  )
  @result.empty?
end