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RSpec.describe Magick::Draw, '#composite' do
it 'works' do
draw = described_class.new
image = Magick::Image.new(10, 10)
expect { draw.composite(0, 0, 10, 10, image) }.not_to raise_error
Magick::CompositeOperator.values do |op|
expect { draw.composite(0, 0, 10, 10, image, op) }.not_to raise_error
end
expect { draw.composite('x', 0, 10, 10, image) }.to raise_error(TypeError)
expect { draw.composite(0, 'y', 10, 10, image) }.to raise_error(TypeError)
expect { draw.composite(0, 0, 'w', 10, image) }.to raise_error(TypeError)
expect { draw.composite(0, 0, 10, 'h', image) }.to raise_error(TypeError)
expect { draw.composite(0, 0, 10, 10, image, Magick::CenterAlign) }.to raise_error(TypeError)
expect { draw.composite(0, 0, 10, 10, 'image') }.to raise_error(NoMethodError)
expect { draw.composite(0, 0, 10, 10) }.to raise_error(ArgumentError)
expect { draw.composite(0, 0, 10, 10, image, Magick::ModulusAddCompositeOp, 'x') }.to raise_error(ArgumentError)
end
it 'accepts an ImageList argument' do
draw = described_class.new
image_list = Magick::ImageList.new
image_list.new_image(10, 10)
expect { draw.composite(0, 0, 10, 10, image_list) }.not_to raise_error
expect { draw.composite(0, 0, 10, 10, image_list, Magick::BlendCompositeOp) }.not_to raise_error
end
end
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