class CCK::KeysChecker

def self.compare(found, expected)
  KeysChecker.new.compare(found, expected)
end

def compare(found, expected)
  errors = []
  found_keys = found.to_h(reject_nil_values: true).keys
  expected_keys = expected.to_h(reject_nil_values: true).keys
  return errors if found_keys.sort == expected_keys.sort
  missing_keys = (expected_keys - found_keys)
  extra_keys = (found_keys - expected_keys).reject { |key|
    ENV['CI'] && found.class == Cucumber::Messages::Meta && key == :ci
  }
  errors << "Found extra keys in message #{found.class.name}: #{extra_keys}" unless extra_keys.empty?
  errors << "Missing keys in message #{found.class.name}: #{missing_keys}" unless missing_keys.empty?
  errors
rescue StandardError => e
  ["Unexpected error: #{e.message}"]
end