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<?php
/**
* @copyright Copyright (c) 2023 Ferdinand Thiessen <opensource@fthiessen.de>
*
* @author Ferdinand Thiessen <opensource@fthiessen.de>
*
* @license AGPL-3.0-or-later
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Theming\Tests\Themes;
use OCA\Theming\ITheme;
use OCA\Theming\Util;
use Test\TestCase;
class AccessibleThemeTestCase extends TestCase {
protected ITheme $theme;
protected Util $util;
/**
* Set to true to check for WCAG AAA level accessibility
*/
protected bool $WCAGaaa = false;
public function dataAccessibilityPairs() {
$textContrast = $this->WCAGaaa ? 7.0 : 4.5;
$elementContrast = 3.0;
return [
'primary-element on background' => [
[
'--color-primary-element',
'--color-primary-element-hover',
],
[
'--color-main-background',
'--color-background-hover',
'--color-background-dark',
'--color-background-darker',
'--color-main-background-blur',
],
$elementContrast,
],
'status color elements on background' => [
[
'--color-error',
'--color-error-hover',
'--color-warning',
'--color-warning-hover',
'--color-info',
'--color-info-hover',
'--color-success',
'--color-success-hover',
],
[
'--color-main-background',
'--color-background-hover',
'--color-background-dark',
'--color-background-darker',
'--color-main-background-blur',
],
$elementContrast,
],
// Those two colors are used for borders which will be `color-main-text` on focussed state, thus need 3:1 contrast to it
'success-error-border-colors' => [
[
'--color-error',
'--color-success',
],
[
'--color-main-text',
],
$elementContrast,
],
'primary-element-text' => [
[
'--color-primary-element-text',
'--color-primary-element-text-dark',
],
[
'--color-primary-element',
'--color-primary-element-hover',
],
$textContrast,
],
'primary-element-light-text' => [
['--color-primary-element-light-text'],
[
'--color-primary-element-light',
'--color-primary-element-light-hover',
],
$textContrast,
],
'main-text' => [
['--color-main-text'],
[
'--color-main-background',
'--color-background-hover',
'--color-background-dark',
'--color-background-darker',
'--color-main-background-blur',
],
$textContrast,
],
'max-contrast-text' => [
['--color-text-maxcontrast'],
[
'--color-main-background',
'--color-background-hover',
'--color-background-dark',
],
$textContrast,
],
'max-contrast text-on blur' => [
['--color-text-maxcontrast-background-blur'],
[
'--color-main-background-blur',
],
$textContrast,
],
'status-text' => [
[
'--color-error-text',
'--color-warning-text',
'--color-success-text',
'--color-info-text',
],
[
'--color-main-background',
'--color-background-hover',
'--color-background-dark',
'--color-main-background-blur',
],
$textContrast,
],
];
}
/**
* @dataProvider dataAccessibilityPairs
*/
public function testAccessibilityOfVariables($mainColors, $backgroundColors, $minContrast) {
if (!isset($this->theme)) {
$this->markTestSkipped('You need to setup $this->theme in your setUp function');
} elseif (!isset($this->util)) {
$this->markTestSkipped('You need to setup $this->util in your setUp function');
}
$variables = $this->theme->getCSSVariables();
// Blur effect does not work so we mockup the color - worst supported case is the default "clouds" background image (on dark themes the clouds with white color are bad on bright themes the primary color as sky is bad)
$variables['--color-main-background-blur'] = $this->util->mix($variables['--color-main-background'], $this->util->isBrightColor($variables['--color-main-background']) ? '#000000' : '#ffffff', 75);
foreach ($backgroundColors as $background) {
$this->assertStringStartsWith('#', $variables[$background], 'Is not a plain color variable - consider to remove or fix this test');
foreach ($mainColors as $main) {
$this->assertStringStartsWith('#', $variables[$main], 'Is not a plain color variable - consider to remove or fix this test');
$realContrast = $this->util->colorContrast($variables[$main], $variables[$background]);
$this->assertGreaterThanOrEqual($minContrast, $realContrast, "Contrast is not high enough for $main (" . $variables[$main] . ") on $background (" . $variables[$background] . ')');
}
}
}
}
|
