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RSpec.describe Magick::ImageList, '#scene' do
it 'works' do
image_list = described_class.new(*FILES[0..9])
expect { image_list.scene }.not_to raise_error
expect(image_list.scene).to eq(9)
expect { image_list.scene = 0 }.not_to raise_error
expect(image_list.scene).to eq(0)
expect { image_list.scene = 1 }.not_to raise_error
expect(image_list.scene).to eq(1)
expect { image_list.scene = -1 }.to raise_error(IndexError)
expect { image_list.scene = 1000 }.to raise_error(IndexError)
expect { image_list.scene = nil }.to raise_error(IndexError)
# allow nil on empty image_list
empty_list = described_class.new
expect { empty_list.scene = nil }.not_to raise_error
end
end
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