matcher for comparing string as uf8-mac coded string in test iOS app via appium

utf8-mac-matcher.rb

RSpec::Matchers.define :eq_as_utf8_mac do |expected|
  match do |actual|
    actual.force_encoding('UTF8-MAC') === expected.encode('UTF8-MAC')
  end
end

expected = 'ぱぴぷぺぽ'
# actual = 'ぱぴぷぺぽ' gots from iOS App through appium server.

expect(find(actual).name.strip)
    .to eq_as_utf8_mac(expected)