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RSpec.describe Magick::Image, '#mask' do
it 'works' do
image1 = described_class.new(20, 20)
cimage = described_class.new(10, 10)
image1.mask(cimage)
result = image1.mask
expect(result).not_to be(nil)
expect(result).not_to be(cimage)
expect(result.columns).to eq(20)
expect(result.rows).to eq(20)
expect { image1.mask(cimage, 'x') }.to raise_error(ArgumentError)
# mask expects an Image and calls `cur_image'
expect { image1.mask = 2 }.to raise_error(NoMethodError)
image2 = image1.copy.freeze
expect { image2.mask cimage }.to raise_error(FrozenError)
image1.destroy!
expect { image1.mask cimage }.to raise_error(Magick::DestroyedImageError)
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.mask(image_list) }.not_to raise_error
end
end
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