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RSpec.describe Magick::Image, "#colorize" do
it "works" do
image = described_class.new(20, 20)
result = image.colorize(0.25, 0.25, 0.25, 'red')
expect(result).to be_instance_of(described_class)
expect { image.colorize(0.25, 0.25, 0.25, 0.25, 'red') }.not_to raise_error
pixel = Magick::Pixel.new(Magick::QuantumRange)
expect { image.colorize(0.25, 0.25, 0.25, pixel) }.not_to raise_error
expect { image.colorize(0.25, 0.25, 0.25, 0.25, pixel) }.not_to raise_error
expect { image.colorize }.to raise_error(ArgumentError)
expect { image.colorize(0.25) }.to raise_error(ArgumentError)
expect { image.colorize(0.25, 0.25) }.to raise_error(ArgumentError)
expect { image.colorize(0.25, 0.25, 0.25) }.to raise_error(ArgumentError)
expect { image.colorize(0.25, 0.25, 0.25, 'X') }.to raise_error(ArgumentError)
# last argument must be a color name or pixel
expect { image.colorize(0.25, 0.25, 0.25, 0.25) }.to raise_error(TypeError)
expect { image.colorize(0.25, 0.25, 0.25, 0.25, 'X') }.to raise_error(ArgumentError)
expect { image.colorize(0.25, 0.25, 0.25, 0.25, [2]) }.to raise_error(TypeError)
end
end
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