haml--haml/test/sass/functions_test.rb

require 'test/unit'
require File.dirname(__FILE__) + '/../../lib/sass'
require 'sass/script'

class SassFunctionTest < Test::Unit::TestCase
  def test_hsl
    # These tests adapted from the w3c browser tests
    # http://www.w3.org/Style/CSS/Test/CSS3/Color/20070927/html4/t040204-hsl-h-rotating-b.htm
    red = [255, 0, 0]
    assert_rgb_hsl(red, ['0', '100%', '50%'])
    assert_rgb_hsl(red, ['-360', '100%', '50%'])
    assert_rgb_hsl(red, ['360', '100%', '50%'])
    assert_rgb_hsl(red, ['6120', '100%', '50%'])

    yellow = [255, 255, 0]
    assert_rgb_hsl(yellow, ['60', '100%', '50%'])
    assert_rgb_hsl(yellow, ['-300', '100%', '50%'])
    assert_rgb_hsl(yellow, ['420', '100%', '50%'])
    assert_rgb_hsl(yellow, ['-9660', '100%', '50%'])

    green = [0, 255, 0]
    assert_rgb_hsl(green, ['120', '100%', '50%'])
    assert_rgb_hsl(green, ['-240', '100%', '50%'])
    assert_rgb_hsl(green, ['480', '100%', '50%'])
    assert_rgb_hsl(green, ['99840', '100%', '50%'])

    cyan = [0, 255, 255]
    assert_rgb_hsl(cyan, ['180', '100%', '50%'])
    assert_rgb_hsl(cyan, ['-180', '100%', '50%'])
    assert_rgb_hsl(cyan, ['540', '100%', '50%'])
    assert_rgb_hsl(cyan, ['-900', '100%', '50%'])

    blue = [0, 0, 255]
    assert_rgb_hsl(blue, ['240', '100%', '50%'])
    assert_rgb_hsl(blue, ['-120', '100%', '50%'])
    assert_rgb_hsl(blue, ['600', '100%', '50%'])
    assert_rgb_hsl(blue, ['-104880', '100%', '50%'])

    purple = [255, 0, 255]
    assert_rgb_hsl(purple, ['300', '100%', '50%'])
    assert_rgb_hsl(purple, ['-60', '100%', '50%'])
    assert_rgb_hsl(purple, ['660', '100%', '50%'])
    assert_rgb_hsl(purple, ['2820', '100%', '50%'])
  end

  private

  def assert_rgb_hsl(rgb, hsl)
    assert_equal(rgb, Sass::Script::Functions.hsl(*hsl.map(&Sass::Script::Parser.method(:parse))).value)
  end
end