File: HeadingPermalinkExtensionTest.php

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<?php

/*
 * This file is part of the league/commonmark package.
 *
 * (c) Colin O'Dell <colinodell@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace League\CommonMark\Tests\Functional\Extension\HeadingPermalink;

use League\CommonMark\CommonMarkConverter;
use League\CommonMark\Environment;
use League\CommonMark\Extension\HeadingPermalink\HeadingPermalinkExtension;
use League\CommonMark\Extension\HeadingPermalink\HeadingPermalinkRenderer;
use PHPUnit\Framework\TestCase;

final class HeadingPermalinkExtensionTest extends TestCase
{
    /**
     * @param string $input
     * @param string $expected
     *
     * @dataProvider dataProviderForTestHeadingPermalinksWithDefaultOptions
     */
    public function testHeadingPermalinksWithDefaultOptions(string $input, string $expected)
    {
        $environment = Environment::createCommonMarkEnvironment();
        $environment->addExtension(new HeadingPermalinkExtension());

        $converter = new CommonMarkConverter([], $environment);

        $this->assertEquals($expected, \trim($converter->convertToHtml($input)));
    }

    public function dataProviderForTestHeadingPermalinksWithDefaultOptions()
    {
        yield ['# Hello World!', sprintf('<h1><a id="user-content-hello-world" href="#hello-world" name="hello-world" class="heading-permalink" aria-hidden="true" title="Permalink">%s</a>Hello World!</h1>', HeadingPermalinkRenderer::DEFAULT_SYMBOL)];
        yield ['# Hello *World*', sprintf('<h1><a id="user-content-hello-world" href="#hello-world" name="hello-world" class="heading-permalink" aria-hidden="true" title="Permalink">%s</a>Hello <em>World</em></h1>', HeadingPermalinkRenderer::DEFAULT_SYMBOL)];
        yield ['# Hello `World`', sprintf('<h1><a id="user-content-hello-world" href="#hello-world" name="hello-world" class="heading-permalink" aria-hidden="true" title="Permalink">%s</a>Hello <code>World</code></h1>', HeadingPermalinkRenderer::DEFAULT_SYMBOL)];
        yield ["Test\n----", sprintf('<h2><a id="user-content-test" href="#test" name="test" class="heading-permalink" aria-hidden="true" title="Permalink">%s</a>Test</h2>', HeadingPermalinkRenderer::DEFAULT_SYMBOL)];
        yield ["# Hello World!\n\n# Hello World!", sprintf("<h1><a id=\"user-content-hello-world\" href=\"#hello-world\" name=\"hello-world\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">%s</a>Hello World!</h1>\n<h1><a id=\"user-content-hello-world-1\" href=\"#hello-world-1\" name=\"hello-world-1\" class=\"heading-permalink\" aria-hidden=\"true\" title=\"Permalink\">%s</a>Hello World!</h1>", HeadingPermalinkRenderer::DEFAULT_SYMBOL, HeadingPermalinkRenderer::DEFAULT_SYMBOL)];
    }

    /**
     * @param string $input
     * @param string $expected
     *
     * @dataProvider dataProviderForTestHeadingPermalinksWithCustomOptions
     */
    public function testHeadingPermalinksWithCustomOptions(string $input, string $expected)
    {
        $environment = Environment::createCommonMarkEnvironment();
        $environment->addExtension(new HeadingPermalinkExtension());

        $config = [
            'heading_permalink' => [
                'html_class'     => 'custom-class',
                'id_prefix'      => 'custom-prefix',
                // Ensure multiple characters are allowed (including multibyte) and special HTML characters are escaped.
                'symbol'         => '¶ 🦄️ <3 You',
                'insert'         => 'after',
                'title'          => 'Link',
            ],
        ];

        $converter = new CommonMarkConverter($config, $environment);

        $this->assertEquals($expected, \trim($converter->convertToHtml($input)));
    }

    public function dataProviderForTestHeadingPermalinksWithCustomOptions()
    {
        yield ['# Hello World!', '<h1>Hello World!<a id="custom-prefix-hello-world" href="#hello-world" name="hello-world" class="custom-class" aria-hidden="true" title="Link">¶ 🦄️ &lt;3 You</a></h1>'];
        yield ['# Hello *World*', '<h1>Hello <em>World</em><a id="custom-prefix-hello-world" href="#hello-world" name="hello-world" class="custom-class" aria-hidden="true" title="Link">¶ 🦄️ &lt;3 You</a></h1>'];
        yield ["Test\n----", '<h2>Test<a id="custom-prefix-test" href="#test" name="test" class="custom-class" aria-hidden="true" title="Link">¶ 🦄️ &lt;3 You</a></h2>'];
    }

    /**
     * @group legacy
     */
    public function testHeadingPermalinksWithDeprecatedInnerContents()
    {
        $environment = Environment::createCommonMarkEnvironment();
        $environment->addExtension(new HeadingPermalinkExtension());

        $config = [
            'heading_permalink' => [
                'inner_contents' => HeadingPermalinkRenderer::DEFAULT_INNER_CONTENTS,
                'symbol'         => '#',
            ],
        ];

        $converter = new CommonMarkConverter($config, $environment);

        $input = '# Hello World!';
        $expected = sprintf('<h1><a id="user-content-hello-world" href="#hello-world" name="hello-world" class="heading-permalink" aria-hidden="true" title="Permalink">%s</a>Hello World!</h1>', HeadingPermalinkRenderer::DEFAULT_INNER_CONTENTS);

        $this->assertEquals($expected, \trim($converter->convertToHtml($input)));
    }

    public function testHeadingPermalinksWithEmptyIdPrefix()
    {
        $environment = Environment::createCommonMarkEnvironment();
        $environment->addExtension(new HeadingPermalinkExtension());

        $config = [
            'heading_permalink' => [
                'id_prefix' => '',
            ],
        ];

        $converter = new CommonMarkConverter($config, $environment);

        $input = '# Hello World!';
        $expected = sprintf('<h1><a id="hello-world" href="#hello-world" name="hello-world" class="heading-permalink" aria-hidden="true" title="Permalink">%s</a>Hello World!</h1>', HeadingPermalinkRenderer::DEFAULT_SYMBOL);

        $this->assertEquals($expected, \trim($converter->convertToHtml($input)));
    }

    public function testHeadingPermalinksWithEmptySymbol()
    {
        $environment = Environment::createCommonMarkEnvironment();
        $environment->addExtension(new HeadingPermalinkExtension());

        $config = [
            'heading_permalink' => [
                'symbol' => '',
            ],
        ];

        $converter = new CommonMarkConverter($config, $environment);

        $input = '# Hello World!';
        $expected = '<h1><a id="user-content-hello-world" href="#hello-world" name="hello-world" class="heading-permalink" aria-hidden="true" title="Permalink"></a>Hello World!</h1>';

        $this->assertEquals($expected, \trim($converter->convertToHtml($input)));
    }

    public function testHeadingPermalinksWithInvalidInsertConfigurationValue()
    {
        $this->expectException(\RuntimeException::class);

        $environment = Environment::createCommonMarkEnvironment();
        $environment->addExtension(new HeadingPermalinkExtension());

        $config = [
            'heading_permalink' => [
                'insert' => 'invalid value here',
            ],
        ];

        $converter = new CommonMarkConverter($config, $environment);
        $converter->convertToHtml('# This will fail');
    }
}