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RSpec.describe Magick::Pixel, '#from_hsla' do
it 'works' do
pixel = described_class.from_color('brown')
expect { described_class.from_hsla(127, 50, 50) }.not_to raise_error
expect { described_class.from_hsla(127, 50, 50, 0) }.not_to raise_error
expect { described_class.from_hsla('99%', '100%', '100%', '100%') }.not_to raise_error
expect { described_class.from_hsla(0, 0, 0, 0) }.not_to raise_error
expect { described_class.from_hsla(359, 255, 255, 1.0) }.not_to raise_error
expect { described_class.from_hsla([], 50, 50, 0) }.to raise_error(TypeError)
expect { described_class.from_hsla(127, [], 50, 0) }.to raise_error(TypeError)
expect { described_class.from_hsla(127, 50, [], 0) }.to raise_error(TypeError)
expect { described_class.from_hsla }.to raise_error(ArgumentError)
expect { described_class.from_hsla(127, 50, 50, 50, 50) }.to raise_error(ArgumentError)
expect { described_class.from_hsla(-0.01, 0, 0) }.to raise_error(ArgumentError)
expect { described_class.from_hsla(0, -0.01, 0) }.to raise_error(ArgumentError)
expect { described_class.from_hsla(0, 0, -0.01) }.to raise_error(ArgumentError)
expect { described_class.from_hsla(0, 0, 0, -0.01) }.to raise_error(ArgumentError)
expect { described_class.from_hsla(0, 0, 0, 1.01) }.to raise_error(RangeError)
expect { described_class.from_hsla(360, 0, 0) }.to raise_error(RangeError)
expect { described_class.from_hsla(0, 256, 0) }.to raise_error(RangeError)
expect { described_class.from_hsla(0, 0, 256) }.to raise_error(RangeError)
expect { pixel.to_hsla }.not_to raise_error
args = [200, 125.125, 250.5, 0.6]
px = described_class.from_hsla(*args)
hsla = px.to_hsla
expect(hsla[0]).to be_within(0.25).of(args[0])
expect(hsla[1]).to be_within(0.25).of(args[1])
expect(hsla[2]).to be_within(0.25).of(args[2])
expect(hsla[3]).to be_within(0.005).of(args[3])
# test percentages
args = ['20%', '20%', '20%', '20%']
args2 = [360.0 / 5, 255.0 / 5, 255.0 / 5, 1.0 / 5]
px = described_class.from_hsla(*args)
hsla = px.to_hsla
px2 = described_class.from_hsla(*args2)
hsla2 = px2.to_hsla
expect(hsla2[0]).to be_within(0.25).of(hsla[0])
expect(hsla2[1]).to be_within(0.25).of(hsla[1])
expect(hsla2[2]).to be_within(0.25).of(hsla[2])
expect(hsla2[3]).to be_within(0.005).of(hsla[3])
end
end
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