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test.js
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test.js
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const toMarkdown = require("./index.js").default;
QUnit.module("html-to-markdown");
QUnit.test("converts styles between normal words", (assert) => {
const html = `Line with <s>styles</s> <b><i>between</i></b> words.`;
const markdown = `Line with ~~styles~~ ***between*** words.`;
assert.equal(toMarkdown(html), markdown);
assert.equal(toMarkdown("A <b>bold </b>word"), "A **bold** word");
});
QUnit.test("converts inline nested styles", (assert) => {
let html = `<em>Italicised line with <strong>some random</strong> <b>bold</b> words.</em>`;
let markdown = `*Italicised line with **some random** **bold** words.*`;
assert.equal(toMarkdown(html), markdown);
html = `<i class="fa">Italicised line
with <b title="strong">some<br>
random</b> <s>bold</s> words.</i>`;
markdown = `<i>Italicised line with <b>some\nrandom</b> ~~bold~~ words.</i>`;
assert.equal(toMarkdown(html), markdown);
});
QUnit.test("converts a link", (assert) => {
let html = `<a href="https://discourse.org">Discourse</a>`;
let markdown = `[Discourse](https://discourse.org)`;
assert.equal(toMarkdown(html), markdown);
html = `<a href="https://discourse.org">Disc\n\n\nour\n\nse</a>`;
markdown = `[Disc our se](https://discourse.org)`;
assert.equal(toMarkdown(html), markdown);
});
QUnit.test("put raw URL instead of converting the link", (assert) => {
let url = "https://discourse.org";
const html = () => `<a href="${url}">${url}</a>`;
assert.equal(toMarkdown(html()), url);
url = "discourse.org/t/topic-slug/1";
assert.equal(toMarkdown(html()), url);
});
QUnit.test("skip empty link", (assert) => {
assert.equal(toMarkdown(`<a href="https://example.com"></a>`), "");
});
QUnit.test("converts heading tags", (assert) => {
const html = `
<h1>Heading 1</h1>
<h2>Heading 2</h2>
\t <h3>Heading 3</h3>
<h4>Heading 4</h4>
<h5>Heading 5</h5>
<h6>Heading 6</h6>
`;
const markdown = `# Heading 1\n\n## Heading 2\n\n### Heading 3\n\n#### Heading 4\n\n##### Heading 5\n\n###### Heading 6`;
assert.equal(toMarkdown(html), markdown);
});
QUnit.test("converts ul list tag", (assert) => {
let html = `
<ul>
<li>Item 1</li>
<li>
Item 2
<ul>
<li>Sub Item 1</li>
<li><p>Sub Item 2</p></li>
<li>Sub Item 3<ul><li>Sub <i>Sub</i> Item 1</li><li>Sub <b>Sub</b> Item 2</li></ul></li>
</ul>
</li>
<li>Item 3</li>
</ul>
`;
let markdown = `* Item 1\n* Item 2\n * Sub Item 1\n * Sub Item 2\n * Sub Item 3\n * Sub *Sub* Item 1\n * Sub **Sub** Item 2\n* Item 3`;
assert.equal(toMarkdown(html), markdown);
html = `
<ul>
<li><p><span>Bullets at level 1</span></p></li>
<li><p><span>Bullets at level 1</span></p></li> <ul> <li><p><span>Bullets at level 2</span></p></li> <li><p><span>Bullets at level 2</span></p></li> <ul> <li><p><span>Bullets at level 3</span></p></li> </ul> <li><p><span>Bullets at level 2</span></p></li> </ul> <li><p><span>Bullets at level 1</span></p></li></ul> `;
markdown = `* Bullets at level 1
* Bullets at level 1
* Bullets at level 2
* Bullets at level 2
* Bullets at level 3
* Bullets at level 2
* Bullets at level 1`;
assert.equal(toMarkdown(html), markdown);
});
QUnit.test("stripes unwanted inline tags", (assert) => {
const html = `
<p>Lorem ipsum <span>dolor sit amet, consectetur</span> <strike>elit.</strike></p>
<p>Ut minim veniam, <label>quis nostrud</label> laboris <nisi> ut aliquip ex ea</nisi> commodo.</p>
`;
const markdown = `Lorem ipsum dolor sit amet, consectetur ~~elit.~~\n\nUt minim veniam, quis nostrud laboris ut aliquip ex ea commodo.`;
assert.equal(toMarkdown(html), markdown);
});
QUnit.test("converts table tags", (assert) => {
let html = `<address>Discourse Avenue</address><b>laboris</b>
<table>
<thead> <tr><th>Heading 1</th><th>Head 2</th></tr> </thead>
<tbody>
<tr><td>Lorem</td><td>ipsum</td></tr>
<tr><td><b>dolor</b></td> <td><i>sit amet</i></td> </tr>
</tbody>
</table>
`;
let markdown = `Discourse Avenue\n\n**laboris**\n\n|Heading 1|Head 2|\n| --- | --- |\n|Lorem|ipsum|\n|**dolor**|*sit amet*|`;
assert.equal(toMarkdown(html), markdown);
html = `<table>
<tr><th>Heading 1</th><th>Head 2</th></tr>
<tr><td><a href="http://example.com"><img src="http://example.com/image.png" alt="Lorem" width="45" height="45"></a></td><td>ipsum</td></tr>
</table>`;
markdown = `|Heading 1|Head 2|\n| --- | --- |\n|[](http://example.com)|ipsum|`;
assert.equal(toMarkdown(html), markdown);
});
QUnit.test(
"replace pipes with spaces if table format not supported",
(assert) => {
let html = `<table>
<thead> <tr><th>Headi<br><br>ng 1</th><th>Head 2</th></tr> </thead>
<tbody>
<tr><td>Lorem</td><td>ipsum</td></tr>
<tr><td><a href="http://example.com"><img src="http://dolor.com/image.png" /></a></td> <td><i>sit amet</i></td></tr></tbody>
</table>
`;
let markdown = `Headi\n\nng 1 Head 2\nLorem ipsum\n[](http://example.com) *sit amet*`;
assert.equal(toMarkdown(html), markdown);
html = `<table>
<thead> <tr><th>Heading 1</th></tr> </thead>
<tbody>
<tr><td>Lorem</td></tr>
<tr><td><i>sit amet</i></td></tr></tbody>
</table>
`;
markdown = `Heading 1\nLorem\n*sit amet*`;
assert.equal(toMarkdown(html), markdown);
html = `<table><tr><td>Lorem</td><td><strong>sit amet</strong></td></tr></table>`;
markdown = `Lorem **sit amet**`;
assert.equal(toMarkdown(html), markdown);
}
);
QUnit.test("converts img tag", (assert) => {
const url = "https://example.com/image.png";
const base62SHA1 = "q16M6GR110R47Z9p9Dk3PMXOJoE";
let html = `<img src="${url}" width="100" height="50">`;
assert.equal(toMarkdown(html), ``);
html = `<img src="${url}" width="100" height="50" title="some title">`;
assert.equal(toMarkdown(html), ``);
html = `<img src="${url}" width="100" height="50" title="some title" data-base62-sha1="${base62SHA1}">`;
assert.equal(
toMarkdown(html),
``
);
html = `<div><span><img src="${url}" alt="description" width="50" height="100" /></span></div>`;
assert.equal(toMarkdown(html), ``);
html = `<a href="http://example.com"><img src="${url}" alt="description" /></a>`;
assert.equal(
toMarkdown(html),
`[](http://example.com)`
);
html = `<a href="http://example.com">description <img src="${url}" /></a>`;
assert.equal(
toMarkdown(html),
`[description ](http://example.com)`
);
html = `<img alt="description" />`;
assert.equal(toMarkdown(html), "");
html = `<a><img src="${url}" alt="description" /></a>`;
assert.equal(toMarkdown(html), ``);
});
QUnit.test("supporting html tags by keeping them", (assert) => {
let html =
"Lorem <del>ipsum dolor</del> sit <big>amet, <ins>consectetur</ins></big>";
let output = html;
assert.equal(toMarkdown(html), output);
html = `Lorem <del style="font-weight: bold">ipsum dolor</del> sit <big>amet, <ins onclick="alert('hello')">consectetur</ins></big>`;
assert.equal(toMarkdown(html), output);
html = `<a href="http://example.com" onload="">Lorem <del style="font-weight: bold">ipsum dolor</del> sit</a>.`;
output = `[Lorem <del>ipsum dolor</del> sit](http://example.com).`;
assert.equal(toMarkdown(html), output);
html = `Lorem <del>ipsum dolor</del> sit.`;
assert.equal(toMarkdown(html), html);
html = `Have you tried clicking the <kbd>Help Me!</kbd> button?`;
assert.equal(toMarkdown(html), html);
html = `Lorem <a href="http://example.com"><del>ipsum \n\n\n dolor</del> sit.</a>`;
output = `Lorem [<del>ipsum dolor</del> sit.](http://example.com)`;
assert.equal(toMarkdown(html), output);
});
QUnit.test("converts code tags", (assert) => {
let html = `Lorem ipsum dolor sit amet,
<pre><code>var helloWorld = () => {
alert(' hello \t\t world ');
return;
}
helloWorld();</code></pre>
consectetur.`;
let output = `Lorem ipsum dolor sit amet,\n\n\`\`\`\nvar helloWorld = () => {\n alert(' hello \t\t world ');\n return;\n}\nhelloWorld();\n\`\`\`\n\nconsectetur.`;
assert.equal(toMarkdown(html), output);
html = `Lorem ipsum dolor sit amet, <code>var helloWorld = () => {
alert(' hello \t\t world ');
return;
}
helloWorld();</code>consectetur.`;
output = `Lorem ipsum dolor sit amet, \`var helloWorld = () => {\n alert(' hello \t\t world ');\n return;\n}\nhelloWorld();\` consectetur.`;
assert.equal(toMarkdown(html), output);
});
QUnit.test("converts blockquote tag", (assert) => {
let html = "<blockquote>Lorem ipsum</blockquote>";
let output = "> Lorem ipsum";
assert.equal(toMarkdown(html), output);
html =
"<blockquote>Lorem ipsum</blockquote><blockquote><p>dolor sit amet</p></blockquote>";
output = "> Lorem ipsum\n\n> dolor sit amet";
assert.equal(toMarkdown(html), output);
html =
"<blockquote>\nLorem ipsum\n<blockquote><p>dolor <blockquote>sit</blockquote> amet</p></blockquote></blockquote>";
output = "> Lorem ipsum\n> > dolor\n> > > sit\n> > amet";
assert.equal(toMarkdown(html), output);
});
QUnit.test("converts ol list tag", (assert) => {
const html = `Testing
<ol>
<li>Item 1</li>
<li>
Item 2
<ol start="100">
<li>Sub Item 1</li>
<li>Sub Item 2</li>
</ol>
</li>
<li>Item 3</li>
</ol>
`;
const markdown = `Testing\n\n1. Item 1\n2. Item 2\n 100. Sub Item 1\n 101. Sub Item 2\n3. Item 3`;
assert.equal(toMarkdown(html), markdown);
});
QUnit.test("converts list tag from word", (assert) => {
const html = `Sample<!--StartFragment-->
<p class=MsoListParagraphCxSpFirst style='text-indent:-.25in;mso-list:l0 level1 lfo1'>
<![if !supportLists]>
<span style='font-family:Symbol;mso-fareast-font-family:Symbol;mso-bidi-font-family: Symbol;mso-bidi-font-weight:bold'>
<span style='mso-list:Ignore'>·
<span style='font:7.0pt "Times New Roman"'> </span>
</span>
</span>
<![endif]>
<b>Item 1
<o:p></o:p>
</b>
</p>
<p class=MsoListParagraphCxSpMiddle style='text-indent:-.25in;mso-list:l0 level2 lfo1'>
<![if !supportLists]>
<span style='font-family:Symbol;mso-fareast-font-family:Symbol;mso-bidi-font-family: Symbol;mso-bidi-font-style:italic'>
<span style='mso-list:Ignore'>·
<span style='font:7.0pt "Times New Roman"'> </span>
</span>
</span>
<![endif]>
<i>Item 2
<o:p></o:p>
</i>
</p>
<p class=MsoListParagraphCxSpMiddle style='text-indent:-.25in;mso-list:l0 level3 lfo1'>
<![if !supportLists]>
<span style='font-family:Symbol;mso-fareast-font-family:Symbol;mso-bidi-font-family: Symbol'>
<span style='mso-list:Ignore'>·
<span style='font:7.0pt "Times New Roman"'> </span>
</span>
</span>
<![endif]>Item 3 </p>
<p class=MsoListParagraphCxSpLast style='text-indent:-.25in;mso-list:l0 level1 lfo1'>
<![if !supportLists]>
<span style='font-family:Symbol;mso-fareast-font-family:Symbol;mso-bidi-font-family: Symbol'>
<span style='mso-list:Ignore'>·
<span style='font:7.0pt "Times New Roman"'> </span>
</span>
</span>
<![endif]>Item 4</p>
<!--EndFragment-->List`;
const markdown = `Sample\n\n* **Item 1**\n * *Item 2*\n * Item 3\n* Item 4\n\nList`;
assert.equal(toMarkdown(html), markdown);
});
QUnit.test("keeps mention/hash class", (assert) => {
const html = `
<p>User mention: <a class="mention" href="/u/discourse">@discourse</a></p>
<p>Group mention: <a class="mention-group" href="/groups/discourse">@discourse-group</a></p>
<p>Category link: <a class="hashtag" href="/c/foo/1">#<span>foo</span></a></p>
<p>Sub-category link: <a class="hashtag" href="/c/foo/bar/2">#<span>foo:bar</span></a></p>
`;
const markdown = `User mention: @discourse\n\nGroup mention: @discourse-group\n\nCategory link: #foo\n\nSub-category link: #foo:bar`;
assert.equal(toMarkdown(html), markdown);
});
QUnit.test("keeps emoji and removes click count", (assert) => {
const html = `
<p>
A <a href="http://example.com">link</a><span class="badge badge-notification clicks" title="1 click">1</span> with click count
and <img class="emoji" title=":boom:" src="https://d11a6trkgmumsb.cloudfront.net/images/emoji/twitter/boom.png?v=5" alt=":boom:" /> emoji.
</p>
`;
const markdown = `A [link](http://example.com) with click count and :boom: emoji.`;
assert.equal(toMarkdown(html), markdown);
});
QUnit.test("keeps emoji syntax for custom emoji", (assert) => {
const html = `
<p>
<img class="emoji emoji-custom" title=":custom_emoji:" src="https://d11a6trkgmumsb.cloudfront.net/images/emoji/custom_emoji" alt=":custom_emoji:" />
</p>
`;
const markdown = `:custom_emoji:`;
assert.equal(toMarkdown(html), markdown);
});
QUnit.test("converts image lightboxes to markdown", (assert) => {
let html = `
<a class="lightbox" href="https://d11a6trkgmumsb.cloudfront.net/uploads/default/original/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba.jpeg" data-download-href="https://d11a6trkgmumsb.cloudfront.net/uploads/default/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba" title="sherlock3_sig.jpg" rel="nofollow noopener"><img src="https://d11a6trkgmumsb.cloudfront.net/uploads/default/optimized/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba_2_689x459.jpeg" alt="sherlock3_sig" width="689" height="459" class="d-lazyload" srcset="https://d11a6trkgmumsb.cloudfront.net/uploads/default/optimized/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba_2_689x459.jpeg, https://d11a6trkgmumsb.cloudfront.net/uploads/default/optimized/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba_2_1033x688.jpeg 1.5x, https://d11a6trkgmumsb.cloudfront.net/uploads/default/optimized/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba_2_1378x918.jpeg 2x"><div class="meta">
<span class="filename">sherlock3_sig.jpg</span><span class="informations">5496×3664 2 MB</span><span class="expand"></span>
</div></a>
`;
let markdown = ``;
assert.equal(toMarkdown(html), markdown);
html = `<a class="lightbox" href="https://d11a6trkgmumsb.cloudfront.net/uploads/default/original/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba.jpeg" data-download-href="https://d11a6trkgmumsb.cloudfront.net/uploads/default/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba" title="sherlock3_sig.jpg" rel="nofollow noopener"><img src="https://d11a6trkgmumsb.cloudfront.net/uploads/default/optimized/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba_2_689x459.jpeg" alt="sherlock3_sig" width="689" height="459" class="d-lazyload" srcset="https://d11a6trkgmumsb.cloudfront.net/uploads/default/optimized/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba_2_689x459.jpeg, https://d11a6trkgmumsb.cloudfront.net/uploads/default/optimized/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba_2_1033x688.jpeg 1.5x, https://d11a6trkgmumsb.cloudfront.net/uploads/default/optimized/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba_2_1378x918.jpeg 2x"></a>`;
assert.equal(toMarkdown(html), markdown);
html = `
<a class="lightbox" href="https://d11a6trkgmumsb.cloudfront.net/uploads/default/original/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba.jpeg" data-download-href="https://d11a6trkgmumsb.cloudfront.net/uploads/default/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba" title="sherlock3_sig.jpg" rel="nofollow noopener"><img src="https://d11a6trkgmumsb.cloudfront.net/uploads/default/optimized/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba_2_689x459.jpeg" data-base62-sha1="1frsimI7TOtFJyD2LLyKSHM8JWe" alt="sherlock3_sig" width="689" height="459" class="d-lazyload" srcset="https://d11a6trkgmumsb.cloudfront.net/uploads/default/optimized/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba_2_689x459.jpeg, https://d11a6trkgmumsb.cloudfront.net/uploads/default/optimized/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba_2_1033x688.jpeg 1.5x, https://d11a6trkgmumsb.cloudfront.net/uploads/default/optimized/1X/8hkjhk7692f6afed3cb99d43ab2abd4e30aa8cba_2_1378x918.jpeg 2x"><div class="meta">
<span class="filename">sherlock3_sig.jpg</span><span class="informations">5496×3664 2 MB</span><span class="expand"></span>
</div></a>
`;
markdown = ``;
assert.equal(toMarkdown(html), markdown);
});
QUnit.test("converts quotes to markdown", (assert) => {
let html = `
<p>there is a quote below</p>
<aside class="quote no-group" data-username="foo" data-post="1" data-topic="2">
<div class="title" style="cursor: pointer;">
<div class="quote-controls"><span class="svg-icon-title" title="expand/collapse"><svg class="fa d-icon d-icon-chevron-down svg-icon svg-string" xmlns="http://www.w3.org/2000/svg"><use xlink:href="#chevron-down"></use></svg></span><a href="/t/hello-world-i-am-posting-an-image/158/1" title="go to the quoted post" class="back"><svg class="fa d-icon d-icon-arrow-up svg-icon svg-string" xmlns="http://www.w3.org/2000/svg"><use xlink:href="#arrow-up"></use></svg></a></div>
<img alt="" width="20" height="20" src="" class="avatar"> foo:</div>
<blockquote>
<p>this is a quote</p>
</blockquote>
</aside>
<p>there is a quote above</p>
`;
let markdown = `
there is a quote below
[quote="foo, post:1, topic:2"]
this is a quote
[/quote]
there is a quote above
`;
assert.equal(toMarkdown(html), markdown.trim());
});
QUnit.test("strips base64 image URLs", (assert) => {
const html =
'<img src="data:image/jpeg;base64,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" />';
assert.equal(toMarkdown(html), "[image]");
});