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RSpec.describe Magick::Draw, '#stroke_opacity' do
it 'works' do
draw = described_class.new
image = Magick::Image.new(200, 200)
draw.stroke_opacity(0.8)
expect(draw.inspect).to eq('stroke-opacity 0.8')
expect { draw.draw(image) }.not_to raise_error
draw = described_class.new
draw.stroke_opacity(1/4r)
expect(draw.inspect).to eq('stroke-opacity 0.25')
expect { draw.draw(image) }.not_to raise_error
expect { draw.stroke_opacity(0.0) }.not_to raise_error
expect { draw.stroke_opacity(1.0) }.not_to raise_error
expect { draw.stroke_opacity('0.0') }.not_to raise_error
expect { draw.stroke_opacity('1.0') }.not_to raise_error
expect { draw.stroke_opacity('20%') }.not_to raise_error
expect { draw.stroke_opacity(-0.01) }.to raise_error(ArgumentError)
expect { draw.stroke_opacity(1.01) }.to raise_error(ArgumentError)
expect { draw.stroke_opacity('-0.01') }.to raise_error(ArgumentError)
expect { draw.stroke_opacity('1.01') }.to raise_error(ArgumentError)
expect { draw.stroke_opacity('xxx') }.to raise_error(ArgumentError)
expect { draw.stroke_opacity('%20') }.to raise_error(ArgumentError)
end
end
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