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RSpec.describe Magick::Image, '#interlace' do
it 'works' do
image = described_class.new(100, 100)
expect { image.interlace }.not_to raise_error
expect(image.interlace).to be_instance_of(Magick::InterlaceType)
expect(image.interlace).to eq(Magick::NoInterlace)
expect { image.interlace = Magick::LineInterlace }.not_to raise_error
expect(image.interlace).to eq(Magick::LineInterlace)
Magick::InterlaceType.values do |interlace|
expect { image.interlace = interlace }.not_to raise_error
end
expect { image.interlace = 2 }.to raise_error(TypeError)
end
end
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