Added transform tests.

phpunit.xml.dist

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+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit backupGlobals="false"
+         backupStaticAttributes="false"
+         colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         processIsolation="false"
+         stopOnFailure="false"
+         syntaxCheck="false"
+         bootstrap="./tests/bootstrap.php"
+>
+    <testsuites>
+        <testsuite name="Markdown">
+            <directory>./tests</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>

tests/MardownTest.php

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+<?php
+
+namespace Michelf;
+
+class MardownTest extends \PHPUnit_Framework_TestCase
+{
+	private static $md;
+
+	static public function setupBeforeClass()
+	{
+		self::$md = new MarkdownExtra;
+	}
+
+	public function transformProvider()
+	{
+		$ar = array();
+		$di = new \DirectoryIterator(__DIR__ . '/samples');
+		$ri = new \RegexIterator($di, '#\.md$#');
+
+		foreach ($ri as $file)
+		{
+			$path = $file->getPath();
+			$base = $file->getBaseName('.md');
+
+			$ar[$base] = array
+			(
+				file_get_contents($path . DIRECTORY_SEPARATOR . $base . '.md'),
+				file_get_contents($path . DIRECTORY_SEPARATOR . $base . '.html')
+			);
+		}
+
+		return $ar;
+	}
+
+	/**
+	 * @dataProvider transformProvider
+	 */
+	public function testTransform($md, $html)
+	{
+		$this->assertEquals($html . "\n", self::$md->transform($md));
+	}
+}

tests/bootstrap.php

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+<?php
+
+require_once __DIR__ . '/../Michelf/Markdown.php';
+require_once __DIR__ . '/../Michelf/MarkdownExtra.php';

tests/samples/attributes.html

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+<h1 id="header1">Header 1</h1>
+
+<h2 id="header2">Header 2</h2>
+
+<h2 class="main">Markdown</h2>
+
+<h2 id="markdown" class="main highlight">Markdown</h2>
+
+<p><a href="url" title="" id="id" class="class">link</a></p>
+
+<p><img src="url" alt="img" title="" id="id" class="class" /></p>
+
+<p><a href="url" title="optional title" id="id" class="class">link</a></p>
+
+<p><a href="url" title="optional title" id="id" class="class">ref</a></p>
+
+<p><img src="url" alt="img" title="optional title" id="id" class="class" /></p>

tests/samples/attributes.md

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+Header 1            {#header1}
+========
+
+## Header 2 ##      {#header2}
+
+## Markdown ##      {.main}
+
+## Markdown ##      {.main .highlight #markdown}
+
+[link](url){#id .class}
+
+![img](url){#id .class}
+
+[link][ref]
+
+[ref]
+
+![img][ref]
+
+[ref]: url "optional title" {#id .class}

tests/samples/automatic-email.html

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+<p><a href="&#109;&#x61;&#x69;&#108;&#x74;&#x6f;&#58;&#x61;&#x64;&#100;&#114;&#x65;&#115;&#115;&#x40;&#101;&#120;&#x61;m&#112;&#x6c;e&#46;&#x63;&#x6f;&#109;">&#x61;&#x64;&#100;&#114;&#x65;&#115;&#115;&#x40;&#101;&#120;&#x61;m&#112;&#x6c;e&#46;&#x63;&#x6f;&#109;</a></p>

tests/samples/automatic-email.md

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+<address@example.com>

tests/samples/automatic-escaping.html

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+<p>&copy;</p>
+
+<p>AT&amp;T</p>
+
+<p>4 &lt; 5</p>

tests/samples/automatic-escaping.md

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+©
+
+AT&T
+
+4 < 5

tests/samples/automatic-link.html

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+<p><a href="http://example.com/">http://example.com/</a></p>

tests/samples/automatic-link.md

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+<http://example.com/>

tests/samples/backlash-escapes.html

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+<p>&#92;&#96;&#42;&#95;&#123;&#125;&#91;&#93;&#40;&#41;&#35;&#43;&#45;&#46;&#33;&#58;&#124;</p>

tests/samples/backlash-escapes.md

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+\\\`\*\_\{\}\[\]\(\)\#\+\-\.\!\:\|

tests/samples/blockquote-and-more.html

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+<blockquote>
+  <h2>This is a header.</h2>
+
+  <ol>
+  <li>This is the first list item.</li>
+  <li>This is the second list item.</li>
+  </ol>
+
+  <p>Here's some example code:</p>
+
+<pre><code>return shell_exec("echo $input | $markdown_script");
+</code></pre>
+</blockquote>

tests/samples/blockquote-and-more.md

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+> ## This is a header.
+> 
+> 1.   This is the first list item.
+> 2.   This is the second list item.
+> 
+> Here's some example code:
+> 
+>     return shell_exec("echo $input | $markdown_script");

tests/samples/blockquote-lazy.html

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+<blockquote>
+  <p>This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,
+  consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus.
+  Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.</p>
+
+  <p>Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
+  id sem consectetuer libero luctus adipiscing.</p>
+</blockquote>

tests/samples/blockquote-lazy.md

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+> This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,
+consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus.
+Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.
+
+> Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
+id sem consectetuer libero luctus adipiscing.

tests/samples/blockquote-nested.html

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+<blockquote>
+  <p>This is the first level of quoting.</p>
+
+  <blockquote>
+    <p>This is nested blockquote.</p>
+  </blockquote>
+
+  <p>Back to the first level.</p>
+</blockquote>

tests/samples/blockquote-nested.md

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+> This is the first level of quoting.
+>
+> > This is nested blockquote.
+>
+> Back to the first level.

tests/samples/blockquote.html

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+<blockquote>
+  <p>This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,
+  consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus.
+  Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.</p>
+
+  <p>Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
+  id sem consectetuer libero luctus adipiscing.</p>
+</blockquote>

tests/samples/blockquote.md

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+> This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,
+> consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus.
+> Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.
+> 
+> Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
+> id sem consectetuer libero luctus adipiscing.

tests/samples/code-backtick.html

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+<p><code>There is a literal backtick (`) here.</code></p>
+
+<p>A single backtick in a code span: <code>`</code></p>
+
+<p>A backtick-delimited string in a code span: <code>`foo`</code></p>

tests/samples/code-backtick.md

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+``There is a literal backtick (`) here.``
+
+A single backtick in a code span: `` ` ``
+
+A backtick-delimited string in a code span: `` `foo` ``

tests/samples/code-escaped.html

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+<p><code>&amp;#8212;</code> is the decimal-encoded equivalent of <code>&amp;mdash;</code>.</p>

tests/samples/code-escaped.md

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+`—` is the decimal-encoded equivalent of `—`.

tests/samples/code-html.html

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+<p>Please don't use any <code>&lt;blink&gt;</code> tags.</p>

tests/samples/code-html.md

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+Please don't use any `<blink>` tags.

tests/samples/code.html

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+<p>Use the <code>printf()</code> function.</p>

tests/samples/code.md

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+Use the `printf()` function.

tests/samples/codeblock-escape.html

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+<pre><code>&lt;div class="footer"&gt;
+    &amp;copy; 2004 Foo Corporation
+&lt;/div&gt;
+</code></pre>

tests/samples/codeblock-escape.md

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+    <div class="footer">
+        &copy; 2004 Foo Corporation
+    </div>

tests/samples/codeblock-multiline.html

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+<p>Here is an example of AppleScript:</p>
+
+<pre><code>tell application "Foo"
+    beep
+end tell
+</code></pre>

tests/samples/codeblock-multiline.md

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+Here is an example of AppleScript:
+
+    tell application "Foo"
+        beep
+    end tell

tests/samples/codeblock.html

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+<p>This is a normal paragraph:</p>
+
+<pre><code>This is a code block.
+</code></pre>

tests/samples/codeblock.md

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+This is a normal paragraph:
+
+    This is a code block.

tests/samples/embended-markdown.html

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+<div>
+
+<p>Voici du <em>vrai</em> texte Markdown.</p>
+
+</div>
+
+<table>
+<tr>
+<td>Voici du <em>vrai</em> texte Markdown.</td>
+</tr>
+</table>
+
+<table>
+<tr>
+<td>
+
+<p>Voici du <em>vrai</em> texte Markdown.</p>
+
+</td>
+</tr>
+</table>

tests/samples/embended-markdown.md

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+<div markdown="1">
+Voici du *vrai* texte Markdown.
+</div>
+
+<table>
+<tr>
+<td markdown="1">Voici du *vrai* texte Markdown.</td>
+</tr>
+</table>
+
+<table>
+<tr>
+<td markdown="block">Voici du *vrai* texte Markdown.</td>
+</tr>
+</table>

tests/samples/emphasis-in-word.html

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+<p>un<em>frigging</em>believable</p>

tests/samples/emphasis-in-word.md

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+un*frigging*believable

tests/samples/emphasis.html

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+<p><em>single asterisks</em></p>
+
+<p><em>single underscores</em></p>
+
+<p><strong>double asterisks</strong></p>
+
+<p><strong>double underscores</strong></p>

tests/samples/emphasis.md

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+*single asterisks*
+
+_single underscores_
+
+**double asterisks**
+
+__double underscores__

tests/samples/fenced-code-attributes.html

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+<pre><code id="example-1" class="html">&lt;p&gt;just an &lt;b&gt;example&lt;/b&gt;
+</code></pre>

tests/samples/fenced-code-attributes.md

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+~~~~~~~~~~~~~~~~~~~~~~~~~ {.html #example-1}
+<p>just an <b>example</b>
+~~~~~~~~~~~~~~~~~~~~~~~~~

tests/samples/fenced-code-class.html

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+<pre><code class="html">&lt;p&gt;just an &lt;b&gt;example&lt;/b&gt;
+</code></pre>

tests/samples/fenced-code-class.md

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+~~~~~~~~~~~~~~~~~~~~~~~~~ .html
+<p>just an <b>example</b>
+~~~~~~~~~~~~~~~~~~~~~~~~~

tests/samples/fenced-code.html

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+<p>Here's an example:</p>
+
+<pre><code>function test() {
+  console.log("notice the blank line before this function?");
+}
+</code></pre>

tests/samples/fenced-code.md

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+Here's an example:
+
+~~~
+function test() {
+  console.log("notice the blank line before this function?");
+}
+~~~