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RSpec.describe Magick::Image, '#pixel_color' do
it 'works' do
image = described_class.new(20, 20)
result = image.pixel_color(0, 0)
expect(result).to be_instance_of(Magick::Pixel)
result = image.pixel_color(0, 0)
expect(result.to_color).to eq('#FFFFFFFFFFFF')
result = image.pixel_color(0, 0, 'red')
expect(result.to_color).to eq('#FFFFFFFFFFFF')
result = image.pixel_color(0, 0)
expect(result.to_color).to eq('#FFFF00000000')
blue = Magick::Pixel.new(0, 0, Magick::QuantumRange)
expect { image.pixel_color(0, 0, blue) }.not_to raise_error
# If args are out-of-bounds return the background color
image = described_class.new(10, 10) { |options| options.background_color = 'blue' }
expect(image.pixel_color(50, 50).to_color).to eq('#00000000FFFF')
image.class_type = Magick::PseudoClass
result = image.pixel_color(0, 0, 'red')
expect(result.to_color).to eq('#00000000FFFF')
end
it 'get/set CYMK color', unsupported_before('6.8.0') do
image = described_class.new(20, 30) { |options| options.quality = 100 }
image.colorspace = Magick::CMYKColorspace
pixel = Magick::Pixel.new
pixel.cyan = 49 * 257
pixel.magenta = 181 * 257
pixel.yellow = 1 * 257
pixel.black = 183 * 257
image.pixel_color(15, 20, pixel)
temp_file_path = File.join(Dir.tmpdir, 'rmagick_pixel_color.jpg')
image.write(temp_file_path)
image2 = described_class.read(temp_file_path).first
pixel = image2.pixel_color(15, 20)
expect(pixel.cyan).to equal(49 * 257)
expect(pixel.magenta).to equal(181 * 257)
expect(pixel.yellow).to equal(1 * 257)
expect(pixel.black).to equal(183 * 257)
File.delete(temp_file_path)
end
end
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