RSpec.describe Magick::Pixel, '#===' do
  it 'works' do
    pixel1 = described_class.from_color('brown')
    pixel2 = described_class.from_color('brown')

    expect(pixel1 === pixel2).to be(true)
    expect(pixel1 === 'red').to be(false)

    pixel2 = described_class.from_color('red')
    expect(pixel1 === pixel2).to be(false)
  end
end