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RSpec.describe Magick::ImageList, '#slice!' do
it 'works' do
image_list = described_class.new(*FILES[0..9])
image_list.scene = 7
image0 = image_list[0]
image = image_list.slice!(0)
expect(image).to be(image0)
expect(image_list.length).to eq(9)
expect(image_list.scene).to eq(6)
cur = image_list.cur_image
image = image_list.slice!(6)
expect(image).to be(cur)
expect(image_list.length).to eq(8)
expect(image_list.scene).to eq(7)
expect { image_list.slice!(-1) }.not_to raise_error
expect { image_list.slice!(0, 1) }.not_to raise_error
expect { image_list.slice!(0..2) }.not_to raise_error
expect { image_list.slice!(20) }.not_to raise_error
end
end
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