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RSpec.describe Magick::Draw, '#stroke_linecap' do
it 'works' do
draw = described_class.new
image = Magick::Image.new(200, 200)
draw.stroke_linecap('butt')
expect(draw.inspect).to eq('stroke-linecap butt')
expect { draw.draw(image) }.not_to raise_error
draw = described_class.new
draw.stroke_linecap('round')
expect(draw.inspect).to eq('stroke-linecap round')
expect { draw.draw(image) }.not_to raise_error
draw = described_class.new
draw.stroke_linecap('square')
expect(draw.inspect).to eq('stroke-linecap square')
expect { draw.draw(image) }.not_to raise_error
expect { draw.stroke_linecap('foo') }.to raise_error(ArgumentError)
end
end
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