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RSpec.describe Magick::ImageList, '#<<' do
it 'allows appending identical instances more than once' do
image = Magick::Image.new(1, 1)
image_list = described_class.new
image_list << image << image
result = image_list.append(false)
expect(result.columns).to eq(2)
expect(result.rows).to eq(1)
end
it "works" do
image_list = described_class.new
image_list.read(IMAGES_DIR + '/Button_0.gif', IMAGES_DIR + '/Button_0.gif')
image = image_list.append(true)
expect(image).to be_instance_of(Magick::Image)
image = image_list.append(false)
expect(image).to be_instance_of(Magick::Image)
expect { image_list.append }.to raise_error(ArgumentError)
expect { image_list.append(true, 1) }.to raise_error(ArgumentError)
end
end
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