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# frozen_string_literal: true
require "color"
require "minitest_helper"
module TestColor
class TestGrayscale < Minitest::Test
def setup
@gs = Color::Grayscale.from_percentage(33)
end
def test_brightness
assert_in_tolerance(0.33, @gs.brightness)
end
def test_darken_by
assert_in_tolerance(29.7, @gs.darken_by(10).gray)
end
def test_g
assert_in_tolerance(0.33, @gs.g)
assert_in_tolerance(33, @gs.gray)
# @gs.gray = 40
# assert_in_tolerance(0.4, @gs.g)
# @gs.g = 2.0
# assert_in_tolerance(100, @gs.gray)
# @gs.gray = -2.0
# assert_in_tolerance(0.0, @gs.g)
end
def test_css
assert_equal("#545454", @gs.html)
assert_equal("rgb(33.00% 33.00% 33.00%)", @gs.css)
assert_equal("rgb(33.00% 33.00% 33.00% / 1.00)", @gs.css(alpha: 1))
assert_equal("rgb(33.00% 33.00% 33.00% / 0.20)", @gs.css(alpha: 0.2))
end
def test_lighten_by
assert_in_tolerance(0.363, @gs.lighten_by(10).g)
end
def test_inspect
assert_equal("Grayscale [33.00%]", @gs.inspect)
end
def test_pretty_print
assert_pretty_inspect "Grayscale\n[33.00%]\n", @gs
end
end
class TestGrayscaleConversions < Minitest::Test
def setup
@gs = Color::Grayscale.from_percentage(33)
end
def test_to_cmyk
cmyk = @gs.to_cmyk
assert_kind_of(Color::CMYK, cmyk)
assert_in_tolerance(0.0, cmyk.c)
assert_in_tolerance(0.0, cmyk.m)
assert_in_tolerance(0.0, cmyk.y)
assert_in_tolerance(0.67, cmyk.k)
assert_equal(Color::CMYK.from_percentage(0, 0, 0, 100), Color::Grayscale.from_percentage(0).to_cmyk)
end
def test_to_grayscale
assert_equal(@gs, @gs.to_grayscale)
assert_kind_of(Color::Grayscale, @gs.to_grayscale)
end
def test_to_hsl
hsl = @gs.to_hsl
assert_kind_of(Color::HSL, hsl)
assert_in_tolerance(0.0, hsl.h)
assert_in_tolerance(0.0, hsl.s)
assert_in_tolerance(0.33, hsl.l)
assert_equal(Color::HSL.from_values(0, 0, 0), Color::Grayscale.from_percentage(0).to_hsl)
end
def test_to_lab
lab = @gs.to_lab
assert_kind_of(Color::CIELAB, lab)
assert_in_tolerance(35.78746, lab.l)
assert_in_tolerance(0.0031199, lab.a)
assert_in_tolerance(-0.000639, lab.b)
assert_equal(Color::CIELAB.from_values(0, 0, 0), Color::Grayscale.from_percentage(0).to_lab)
end
def test_to_rgb
rgb = @gs.to_rgb
assert_kind_of(Color::RGB, rgb)
assert_in_tolerance(0.33, rgb.r)
assert_in_tolerance(0.33, rgb.g)
assert_in_tolerance(0.33, rgb.b)
assert_equal(Color::RGB.from_values(0, 0, 0), Color::Grayscale.from_percentage(0).to_rgb)
end
def test_to_xyz
xyz = @gs.to_xyz
assert_kind_of(Color::XYZ, xyz)
assert_in_tolerance(0.08457, xyz.x)
assert_in_tolerance(0.08898, xyz.y)
assert_in_tolerance(0.09688, xyz.z)
assert_equal(Color::XYZ.from_values(0, 0, 0), Color::Grayscale.from_percentage(0).to_xyz)
end
def test_to_yiq
yiq = @gs.to_yiq
assert_kind_of(Color::YIQ, yiq)
assert_in_tolerance(0.33, yiq.y)
assert_in_tolerance(0.0, yiq.i)
assert_in_tolerance(0.0, yiq.q)
assert_equal(Color::YIQ.from_values(0, 0, 0), Color::Grayscale.from_percentage(0).to_yiq)
end
def test_to_internal
assert_equal([0.0], Color::Grayscale.from_percentage(0).to_internal)
end
end
end
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