www-lib-markdown/phptest/InlineTests.php

<?php
declare(strict_types=1);

use PHPUnit\Framework\TestCase;

require_once __DIR__ . '/../php/markdown.php';

final class InlineTests extends TestCase {
	/** @type {Markdown} */
	private ?Markdown $parser = null;

	protected function setUp(): void {
		parent::setUp();
		$this->parser = Markdown::completeParser();
	}

	private function md(string $markdown): string {
		return $this->normalizeWhitespace($this->parser->toHTML($markdown));
	}

	private function normalizeWhitespace(string $str): string {
		$str = mb_eregi_replace('\\s+', ' ', $str);
		return trim($str);
	}

	public function test_simpleText() {
		$markdown = 'Lorem ipsum';
		$expected = 'Lorem ipsum';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_strong() {
		$markdown = 'Lorem **ipsum** dolor **sit**';
		$expected = 'Lorem <strong>ipsum</strong> dolor <strong>sit</strong>';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_emphasis() {
		$markdown = 'Lorem _ipsum_ dolor _sit_';
		$expected = 'Lorem <em>ipsum</em> dolor <em>sit</em>';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_strongEmphasis_cleanNesting1() {
		$markdown = 'Lorem **ipsum *dolor* sit** amet';
		$expected = 'Lorem <strong>ipsum <em>dolor</em> sit</strong> amet';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_strongEmphasis_cleanNesting2() {
		$markdown = 'Lorem *ipsum **dolor** sit* amet';
		$expected = 'Lorem <em>ipsum <strong>dolor</strong> sit</em> amet';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_strongEmphasis_tightNesting() {
		$markdown = 'Lorem ***ipsum*** dolor';
		$expected = 'Lorem <strong><em>ipsum</em></strong> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_strongEmphasis_lopsidedNesting1() {
		$markdown = 'Lorem ***ipsum* dolor** sit';
		$expected = 'Lorem <strong><em>ipsum</em> dolor</strong> sit';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_strongEmphasis_lopsidedNesting2() {
		$markdown = 'Lorem ***ipsum** dolor* sit';
		$expected = 'Lorem <em><strong>ipsum</strong> dolor</em> sit';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_strongEmphasis_lopsidedNesting3() {
		$markdown = 'Lorem **ipsum *dolor*** sit';
		$expected = 'Lorem <strong>ipsum <em>dolor</em></strong> sit';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_strongEmphasis_lopsidedNesting4() {
		$markdown = 'Lorem *ipsum **dolor*** sit';
		$expected = 'Lorem <em>ipsum <strong>dolor</strong></em> sit';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_inlineCode() {
		$markdown = 'Lorem `ipsum` dolor';
		$expected = 'Lorem <code>ipsum</code> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_inlineCode_withInnerBacktick() {
		$markdown = 'Lorem ``ip`su`m`` dolor';
		$expected = 'Lorem <code>ip`su`m</code> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_strikethrough_double() {
		$markdown = 'Lorem ~~ipsum~~ dolor';
		$expected = 'Lorem <s>ipsum</s> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_subscript() {
		$markdown = 'H~2~O';
		$expected = 'H<sub>2</sub>O';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_superscript() {
		$markdown = 'E=mc^2^';
		$expected = 'E=mc<sup>2</sup>';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_highlight() {
		$markdown = 'Lorem ==ipsum== dolor';
		$expected = 'Lorem <mark>ipsum</mark> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_underline() {
		$markdown = 'Lorem __ipsum__ dolor';
		$expected = 'Lorem <u>ipsum</u> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_link_fullyQualified() {
		$markdown = 'Lorem [ipsum](https://example.com/path/page.html) dolor';
		$expected = 'Lorem <a href="https://example.com/path/page.html">ipsum</a> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_link_relative() {
		$markdown = 'Lorem [ipsum](page.html) dolor';
		$expected = 'Lorem <a href="page.html">ipsum</a> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_link_title() {
		$markdown = 'Lorem [ipsum](page.html "link title") dolor';
		$expected = 'Lorem <a href="page.html" title="link title">ipsum</a> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_link_literal() {
		$markdown = 'Lorem <https://example.com> dolor';
		$expected = 'Lorem <a href="https://example.com">https://example.com</a> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_link_ref() {
		$markdown = "Lorem [ipsum][ref] dolor\n\n[ref]: https://example.com";
		$expected = '<p>Lorem <a href="https://example.com">ipsum</a> dolor</p>';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_link_email() {
		$markdown = 'Lorem [ipsum](user@example.com) dolor';
		$expected = 'Lorem <a href="mailto:&#117;&#115;&#101;&#114;&#64;&#101;&#120;&#97;&#109;&#112;&#108;&#101;&#46;&#99;&#111;&#109;">ipsum</a> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_link_email_withTitle() {
		$markdown = 'Lorem [ipsum](user@example.com "title") dolor';
		$expected = 'Lorem <a href="mailto:&#117;&#115;&#101;&#114;&#64;&#101;&#120;&#97;&#109;&#112;&#108;&#101;&#46;&#99;&#111;&#109;" title="title">ipsum</a> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_link_literalEmail() {
		$markdown = 'Lorem <user@example.com> dolor';
		$expected = 'Lorem <a href="mailto:&#117;&#115;&#101;&#114;&#64;&#101;&#120;&#97;&#109;&#112;&#108;&#101;&#46;&#99;&#111;&#109;">&#117;&#115;&#101;&#114;&#64;&#101;&#120;&#97;&#109;&#112;&#108;&#101;&#46;&#99;&#111;&#109;</a> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_link_image() {
		$markdown = 'Lorem [![alt](image.jpg)](page.html) ipsum';
		$expected = 'Lorem <a href="page.html"><img src="image.jpg" alt="alt"></a> ipsum';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_link_image_complex() {
		$markdown = 'Lorem [![alt] (image.jpg "image title")] (page.html "link title") ipsum';
		$expected = 'Lorem <a href="page.html" title="link title"><img src="image.jpg" alt="alt" title="image title"></a> ipsum';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_image() {
		$markdown = 'Lorem ![alt text](image.jpg) dolor';
		$expected = 'Lorem <img src="image.jpg" alt="alt text"> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_image_noAlt() {
		$markdown = 'Lorem ![](image.jpg) dolor';
		$expected = 'Lorem <img src="image.jpg"> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_image_withTitle() {
		$markdown = 'Lorem ![alt text](image.jpg "image title") dolor';
		$expected = 'Lorem <img src="image.jpg" alt="alt text" title="image title"> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_image_ref() {
		$markdown = "Lorem ![alt text][ref] dolor\n\n" .
			'[ref]: image.jpg "image title"';
		$expected = '<p>Lorem <img src="image.jpg" alt="alt text" title="image title"> dolor</p>';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}

	public function test_htmlTags() {
		$markdown = 'Lorem <strong title=\'with " quote\' id="with \' apostrophe" lang=unquoted translate forbidden="true">ipsum</strong> dolor';
		$expected = 'Lorem <strong title="with &quot; quote" id="with \' apostrophe" lang="unquoted" translate>ipsum</strong> dolor';
		$actual = $this->md($markdown);
		$this->assertSame($expected, $actual);
	}
}