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RSpec.describe Magick::Image, '#composite!' do
it 'works' do
image1 = described_class.read(IMAGES_DIR + '/Button_0.gif').first
image2 = described_class.read(IMAGES_DIR + '/Button_1.gif').first
image1.define('compose:args', '1x1')
image2.define('compose:args', '1x1')
Magick::CompositeOperator.values do |op|
Magick::GravityType.values do |gravity|
result = image1.composite!(image2, gravity, op)
expect(result).to be(image1)
end
end
image1.freeze
expect { image1.composite!(image2, Magick::NorthWestGravity, Magick::OverCompositeOp) }.to raise_error(FrozenError)
end
it 'accepts an ImageList argument' do
image = described_class.new(20, 20)
image_list = Magick::ImageList.new
image_list.new_image(10, 10)
expect { image.composite!(image_list, Magick::NorthWestGravity, Magick::OverCompositeOp) }.not_to raise_error
end
end
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