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 def test_hsl_checks_bounds assert_error_message("Saturation -114 must be between 0% and 100% for `hsl'", "hsl(10, -114, 12)"); assert_error_message("Lightness 256 must be between 0% and 100% for `hsl'", "hsl(10, 10, 256%)"); end def test_percentage assert_equal("50%", evaluate("percentage(.5)")) assert_equal("100%", evaluate("percentage(1)")) assert_equal("25%", evaluate("percentage(25px / 100px)")) assert_error_message("25px is not a unitless number for `percentage'", "percentage(25px)") assert_error_message("#cccccc is not a unitless number for `percentage'", "percentage(#ccc)") assert_error_message("string is not a unitless number for `percentage'", %Q{percentage("string")}) end def test_round assert_equal("5", evaluate("round(4.8)")) assert_equal("5px", evaluate("round(4.8px)")) assert_equal("5px", evaluate("round(5.49px)")) assert_error_message("#cccccc is not a number for `round'", "round(#ccc)") end def test_floor assert_equal("4", evaluate("floor(4.8)")) assert_equal("4px", evaluate("floor(4.8px)")) assert_error_message("foo is not a number for `floor'", "floor(\"foo\")") end def test_ceil assert_equal("5", evaluate("ceil(4.1)")) assert_equal("5px", evaluate("ceil(4.8px)")) assert_error_message("a is not a number for `ceil'", "ceil(\"a\")") end def test_abs assert_equal("5", evaluate("abs(-5)")) assert_equal("5px", evaluate("abs(-5px)")) assert_equal("5", evaluate("abs(5)")) assert_equal("5px", evaluate("abs(5px)")) assert_error_message("#aaaaaa is not a number for `abs'", "abs(#aaa)") end private def assert_rgb_hsl(rgb, hsl) hsl = hsl.map {|v| Sass::Script::Parser.parse v, 0, 0 } assert_equal(rgb, Sass::Script::Functions::EvaluationContext.new({}).hsl(*hsl).value) end def evaluate(value) Sass::Script::Parser.parse(value, 0, 0).perform(Sass::Environment.new).to_s end def assert_error_message(message, value) evaluate(value) flunk("Error message expected but not raised: #{message}") rescue Sass::SyntaxError => e assert_equal(message, e.message) end end