mirror of
https://git.savannah.gnu.org/git/emacs.git
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252 lines
9.5 KiB
EmacsLisp
252 lines
9.5 KiB
EmacsLisp
;;; color-tests.el --- Tests for color.el -*- lexical-binding: t; -*-
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;; Copyright (C) 2017-2023 Free Software Foundation, Inc.
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;; Author: Simen Heggestøyl <simenheg@gmail.com>
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;; Keywords:
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;
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;;; Code:
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(require 'cl-lib)
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(require 'color)
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(require 'ert)
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(require 'seq)
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(defun color-tests--approx-equal (color1 color2)
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"Return t if COLOR1 and COLOR2 are approximately equal."
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(seq-every-p
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(lambda (x) (< (abs x) 0.00001))
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(cl-mapcar #'- color1 color2)))
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(ert-deftest color-tests-name-to-rgb ()
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(should (equal (color-name-to-rgb "black") '(0.0 0.0 0.0)))
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(should (equal (color-name-to-rgb "white") '(1.0 1.0 1.0)))
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(should (equal (color-name-to-rgb "red") '(1.0 0.0 0.0)))
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(should (equal (color-name-to-rgb "green") '(0.0 1.0 0.0)))
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(should (equal (color-name-to-rgb "blue") '(0.0 0.0 1.0)))
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(should (equal (color-name-to-rgb "#000000000000") '(0.0 0.0 0.0)))
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(should (equal (color-name-to-rgb "#ffffffffffff") '(1.0 1.0 1.0)))
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(should (equal (color-name-to-rgb "#ffff00000000") '(1.0 0.0 0.0)))
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(should (equal (color-name-to-rgb "#0000ffff0000") '(0.0 1.0 0.0)))
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(should (equal (color-name-to-rgb "#00000000ffff") '(0.0 0.0 1.0))))
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(ert-deftest color-tests-rgb-to-hex ()
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(should (equal (color-rgb-to-hex 0 0 0) "#000000000000"))
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(should (equal (color-rgb-to-hex 0 0 0 2) "#000000"))
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(should (equal (color-rgb-to-hex 1 0 0) "#ffff00000000"))
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(should (equal (color-rgb-to-hex 1 0 0 2) "#ff0000"))
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(should (equal (color-rgb-to-hex 0.1 0.2 0.3) "#199933334ccc"))
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(should (equal (color-rgb-to-hex 0.1 0.2 0.3 2) "#19334c")))
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(ert-deftest color-tests-complement ()
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(should (equal (color-complement "white") '(0.0 0.0 0.0)))
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(should (equal (color-complement "#ffffffffffff") '(0.0 0.0 0.0)))
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(should (equal (color-complement "red") '(0.0 1.0 1.0))))
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(ert-deftest color-tests-gradient ()
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(should-not (color-gradient '(0 0 0) '(255 255 255) 0))
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(should
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(equal (color-gradient '(0 0 0) '(255 255 255) 1)
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'((127.5 127.5 127.5))))
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(should
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(equal (color-gradient '(0 0 0) '(255 255 255) 2)
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'((85.0 85.0 85.0) (170.0 170.0 170.0))))
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(should
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(equal
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(color-gradient '(255 192 203) '(250 128 114) 3)
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'((253.75 176.0 180.75) (252.5 160.0 158.5) (251.25 144.0 136.25)))))
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(ert-deftest color-tests-hsl-to-rgb ()
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(should (equal (color-hsl-to-rgb 0 0 0) '(0 0 0)))
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(should (equal (color-hsl-to-rgb 360 0.5 0.5) '(0.75 0.25 0.25)))
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(should (equal (color-hsl-to-rgb 123 0.2 0.9) '(0.92 0.88 0.88))))
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(ert-deftest color-tests-complement-hex ()
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(should
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(equal (color-complement-hex "#000000000000") "#ffffffffffff"))
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(should
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(equal (color-complement-hex "#ffff00000000") "#0000ffffffff")))
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(ert-deftest color-tests-rgb-to-hsv ()
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(should (equal (color-rgb-to-hsv 0 0 0) '(0.0 0.0 0.0)))
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(should (equal (color-rgb-to-hsv 1 1 1) '(0.0 0.0 1.0)))
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(should (equal (color-rgb-to-hsv 1 0 0) '(0.0 1.0 1.0)))
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(should (equal (color-rgb-to-hsv 0.5 0.3 0.3) '(0.0 0.4 0.5))))
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(ert-deftest color-tests-rgb-to-hsl ()
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(should (equal (color-rgb-to-hsl 0 0 0) '(0.0 0.0 0.0)))
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(should (equal (color-rgb-to-hsl 1 1 1) '(0.0 0.0 1.0)))
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(should (equal (color-rgb-to-hsl 1 0 0) '(0.0 1 0.5)))
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(should (equal (color-rgb-to-hsl 0.5 0.3 0.3) '(0.0 0.25 0.4))))
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(ert-deftest color-tests-srgb-to-xyz ()
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(should (equal (color-srgb-to-xyz 0 0 0) '(0.0 0.0 0.0)))
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(should
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(equal (color-srgb-to-xyz 0 0 1) '(0.1804375 0.072175 0.9503041)))
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(should
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(color-tests--approx-equal
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(color-srgb-to-xyz 0.1 0.2 0.3) '(0.0291865 0.031092 0.073738))))
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(ert-deftest color-tests-xyz-to-srgb ()
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(should (equal (color-xyz-to-srgb 0 0 0) '(0.0 0.0 0.0)))
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(should
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(color-tests--approx-equal
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(color-xyz-to-srgb 0.1804375 0.072175 0.9503041) '(0 0 1)))
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(should
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(color-tests--approx-equal
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(color-xyz-to-srgb 0.0291865 0.031092 0.073738) '(0.1 0.2 0.3))))
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(ert-deftest color-tests-xyz-to-lab ()
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(should (equal (color-xyz-to-lab 0 0 0) '(0.0 0.0 0.0)))
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(should
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(color-tests--approx-equal
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(color-xyz-to-lab 0.1804375 0.072175 0.9503041)
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'(32.2970109 79.1890315 -107.8646674)))
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(should
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(color-tests--approx-equal
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(color-xyz-to-lab 0.1804375 0.072175 0.9503041 '(1 1 1))
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'(32.2970109 74.3625763 -113.3597823)))
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(should
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(color-tests--approx-equal
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(color-xyz-to-lab 0.0291865 0.031092 0.073738)
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'(20.4760281 -0.6500752 -18.6340169))))
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(ert-deftest color-tests-lab-to-xyz ()
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(should (equal (color-lab-to-xyz 0 0 0) '(0.0 0.0 0.0)))
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(should
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(color-tests--approx-equal
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(color-lab-to-xyz 32.2970109 79.1890315 -107.8646674)
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'(0.1804375 0.072175 0.9503041)))
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(should
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(color-tests--approx-equal
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(color-lab-to-xyz 32.2970109 74.3625763 -113.3597823 '(1 1 1))
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'(0.1804375 0.072175 0.9503041)))
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(should
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(color-tests--approx-equal
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(color-lab-to-xyz 20.4760281 -0.6500752 -18.6340169)
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'(0.0291865 0.031092 0.073738))))
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(ert-deftest color-tests-srgb-to-lab ()
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(should (equal (color-srgb-to-lab 0 0 0) '(0.0 0.0 0.0)))
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(should
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(color-tests--approx-equal
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(color-srgb-to-lab 0 1 0) '(87.7347223 -86.1808176 83.1770651)))
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(should
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(color-tests--approx-equal
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(color-srgb-to-lab 0.1 0.2 0.3)
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'(20.4762218 -0.6508996 -18.6340085))))
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(ert-deftest color-tests-lab-to-srgb ()
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(should (equal (color-lab-to-srgb 0 0 0) '(0.0 0.0 0.0)))
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(should
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(color-tests--approx-equal
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(color-lab-to-srgb 87.7347223 -86.1808176 83.1770651) '(0 1 0)))
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(should
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(color-tests--approx-equal
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(color-lab-to-srgb 20.4762218 -0.6508996 -18.6340085)
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'(0.1 0.2 0.3))))
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(ert-deftest color-tests-cie-de2000 ()
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(should (= (color-cie-de2000 '(0 0 0) '(0 0 0)) 0.0))
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(should
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(color-tests--approx-equal
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(list
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(color-cie-de2000
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(color-srgb-to-lab 1 0 0) (color-srgb-to-lab 0 0 1)))
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'(52.8803934)))
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(should
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(color-tests--approx-equal
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(list
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(color-cie-de2000
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(color-srgb-to-lab 0.8 0 0) (color-srgb-to-lab 0.9 0 0)))
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'(5.3844503))))
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(ert-deftest color-tests-clamp ()
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(should (= (color-clamp 0) 0.0))
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(should (= (color-clamp -1) 0.0))
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(should (= (color-clamp 0.5) 0.5))
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(should (= (color-clamp 1) 1.0))
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(should (= (color-clamp 1.1) 1.0)))
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(ert-deftest color-tests-saturate-hsl ()
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(should (equal (color-saturate-hsl 360 0.5 0.5 0) '(360 0.5 0.5)))
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(should (equal (color-saturate-hsl 360 0.5 0.5 -10) '(360 0.4 0.5)))
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(should
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(equal (color-saturate-hsl 360 0.5 0.5 -500) '(360 0.0 0.5)))
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(should (equal (color-saturate-hsl 120 0.5 0.8 5) '(120 0.55 0.8)))
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(should
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(equal (color-saturate-hsl 120 0.5 0.8 500) '(120 1.0 0.8))))
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(ert-deftest color-tests-saturate-name ()
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(should (equal (color-saturate-name "black" 100) "#000000000000"))
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(should (equal (color-saturate-name "white" 100) "#ffffffffffff"))
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(should (equal (color-saturate-name "red" 0) "#ffff00000000"))
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(should (equal (color-saturate-name "red" 50) "#ffff00000000")))
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(ert-deftest color-tests-desaturate-hsl ()
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(should (equal (color-desaturate-hsl 360 0.5 0.5 0) '(360 0.5 0.5)))
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(should
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(equal (color-desaturate-hsl 360 0.5 0.5 -10) '(360 0.6 0.5)))
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(should
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(equal (color-desaturate-hsl 360 0.5 0.5 -500) '(360 1.0 0.5)))
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(should
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(equal (color-desaturate-hsl 120 0.5 0.8 5) '(120 0.45 0.8)))
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(should
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(equal (color-desaturate-hsl 120 0.5 0.8 500) '(120 0.0 0.8))))
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(ert-deftest color-tests-desaturate-name ()
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(should (equal (color-desaturate-name "black" 100) "#000000000000"))
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(should (equal (color-desaturate-name "white" 100) "#ffffffffffff"))
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(should (equal (color-desaturate-name "red" 0) "#ffff00000000")))
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(ert-deftest color-tests-lighten-hsl ()
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(should (equal (color-lighten-hsl 360 0.5 0.5 0) '(360 0.5 0.5)))
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(should (equal (color-lighten-hsl 360 0.5 0.5 -10) '(360 0.5 0.45)))
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(should (equal (color-lighten-hsl 360 0.5 0.5 -500) '(360 0.5 0.0)))
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(should
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(color-tests--approx-equal
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(color-lighten-hsl 120 0.5 0.8 5) '(120 0.5 0.84)))
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(should
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(equal (color-lighten-hsl 120 0.5 0.8 500) '(120 0.5 1.0))))
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(ert-deftest color-tests-lighten-name ()
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(should (equal (color-lighten-name "black" 100) "#000000000000"))
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(should (equal (color-lighten-name "white" 100) "#ffffffffffff"))
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(should (equal (color-lighten-name "red" 0) "#ffff00000000"))
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(should (equal (color-lighten-name "red" 10) "#ffff19991999")))
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(ert-deftest color-tests-darken-hsl ()
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(should (equal (color-darken-hsl 360 0.5 0.5 0) '(360 0.5 0.5)))
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(should (equal (color-darken-hsl 360 0.5 0.5 -10) '(360 0.5 0.55)))
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(should (equal (color-darken-hsl 360 0.5 0.5 -500) '(360 0.5 1.0)))
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(should (equal (color-darken-hsl 120 0.5 0.8 5) '(120 0.5 0.76)))
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(should (equal (color-darken-hsl 120 0.5 0.8 500) '(120 0.5 0.0))))
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(ert-deftest color-tests-darken-name ()
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(should (equal (color-darken-name "black" 100) "#000000000000"))
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(should (equal (color-darken-name "white" 100) "#000000000000"))
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(should (equal (color-darken-name "red" 0) "#ffff00000000"))
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(should (equal (color-darken-name "red" 10) "#e66500000000")))
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(provide 'color-tests)
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;;; color-tests.el ends here
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