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RSpec.describe Magick::Image, '#decipher' do
it 'works' do
image = described_class.new(20, 20)
result = image.encipher 'passphrase'
res2 = result.decipher 'passphrase'
expect(result).to be_instance_of(described_class)
expect(result).not_to be(image)
expect(result.columns).to eq(image.columns)
expect(result.rows).to eq(image.rows)
expect(res2).to be_instance_of(described_class)
expect(res2).not_to be(image)
expect(res2.columns).to eq(image.columns)
expect(res2.rows).to eq(image.rows)
expect(res2).to eq(image)
end
end
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