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RSpec.describe Magick::ImageList, '#delete' do
it 'works' do
image_list = described_class.new(*FILES[0..9])
cur = image_list.cur_image
image = image_list[7]
expect(image_list.delete(image)).to be(image)
expect(image_list.length).to eq(9)
expect(image_list.cur_image).to be(cur)
# Try deleting the current image.
expect(image_list.delete(cur)).to be(cur)
expect(image_list.cur_image).to be(image_list[-1])
expect { image_list.delete(2) }.to raise_error(ArgumentError)
expect { image_list.delete([2]) }.to raise_error(ArgumentError)
# Try deleting something that isn't in the image_list.
# Should return the value of the block.
image = Magick::Image.read(FILES[10]).first
result = image_list.delete(image) { 1 }
expect(result).to eq(1)
end
end
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