match_hash

gistfile1.rb

RSpec::Matchers.define :match_hash do |expected|
  errors = []

  match do |actual|
    errors = match_hash(expected, actual)
    errors.empty?
  end

  description do |actual|
    "matches hash #{expected}"
  end

  failure_message do |actual|
    errors.join("\n")
  end

  def match_hash(expected, actual, errors = [], path = nil)
    expected.each do |key, value|
      match_value(expected[key], actual[key], errors, "#{path}#{key}/")
    end

    errors
  end

  def match_array(expected, actual, errors, path)
    expected.each do |expected_element|
      match_value
    end

  end

  def match_value(expected, actual, errors, path)
      if expected[key].is_a?(Hash)
        match_hash(expected_value, actual_value, errors, path)
      elsif expected[key].is_a?(Array)
        match_array(expected_value, actual_value, errors, path)
      else
        unless expected[key] === actual[key]
          errors << "#{path}#{key} #{actual[key]} is expected to be a case of #{expected[key]}"
        end
      end
  end
end