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RSpec.describe Magick::Pixel, '#to_color' do
it 'works' do
pixel = described_class.from_color('brown')
expect { pixel.to_color(Magick::AllCompliance) }.not_to raise_error
expect { pixel.to_color(Magick::SVGCompliance) }.not_to raise_error
expect { pixel.to_color(Magick::X11Compliance) }.not_to raise_error
expect { pixel.to_color(Magick::XPMCompliance) }.not_to raise_error
expect { pixel.to_color(Magick::AllCompliance, true) }.not_to raise_error
expect { pixel.to_color(Magick::AllCompliance, false) }.not_to raise_error
expect { pixel.to_color(Magick::AllCompliance, false, 8) }.not_to raise_error
expect { pixel.to_color(Magick::AllCompliance, false, 16) }.not_to raise_error
# test "hex" format
expect { pixel.to_color(Magick::AllCompliance, false, 8, true) }.not_to raise_error
expect { pixel.to_color(Magick::AllCompliance, false, 16, false) }.not_to raise_error
expect(pixel.to_color(Magick::AllCompliance, false, 8, true)).to eq('#A52A2A')
expect(pixel.to_color(Magick::AllCompliance, false, 16, false)).to eq('brown')
expect { pixel.to_color(Magick::AllCompliance, false, 32) }.to raise_error(ArgumentError)
expect { pixel.to_color(1) }.to raise_error(TypeError)
end
it 'return alpha value if pixel has alpha' do
pixel = described_class.from_color('brown')
pixel.alpha = 123
expect(pixel.to_color(Magick::AllCompliance, true)).to eq('#A5A52A2A2A2A007B')
expect(pixel.to_color(Magick::AllCompliance, false)).to eq('#A5A52A2A2A2A')
end
end
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