/
test.js
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/
test.js
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import assert from 'node:assert/strict'
import test from 'node:test'
import {rehype} from 'rehype'
import rehypeDocument from 'rehype-document'
import rehypeMeta from 'rehype-meta'
const currentYear = new Date().getFullYear()
test('rehypeMeta', async function (t) {
await t.test('core', async function (t) {
await t.test('should expose the public api', async function () {
assert.deepEqual(Object.keys(await import('rehype-meta')).sort(), [
'default'
])
})
await t.test('should work in fragment mode', async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta)
.processSync('')
.toString(),
'<head></head>\n'
)
})
await t.test('should work in document mode', async function () {
assert.equal(
rehype().use(rehypeMeta).processSync('').toString(),
'<html><head></head><body></body></html>'
)
})
await t.test('should add a `title` if `title` is set', async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {title: 'About'})
.processSync('')
.toString(),
['<head>', '<title>About</title>', '</head>', ''].join('\n')
)
})
await t.test(
'should add a combined `title` and `name` if both are set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {name: 'Example', title: 'About'})
.processSync('')
.toString(),
['<head>', '<title>About - Example</title>', '</head>', ''].join('\n')
)
}
)
await t.test(
'should combine `title` and `name` with a given separator',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
name: 'Example',
separator: ' | ',
title: 'About'
})
.processSync('')
.toString(),
['<head>', '<title>About | Example</title>', '</head>', ''].join('\n')
)
}
)
await t.test(
'should add a `link[rel=canonical]` if `origin` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {origin: 'https://a.com'})
.processSync('')
.toString(),
[
'<head>',
'<link rel="canonical" href="https://a.com/">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `link[rel=canonical]` if `origin` and `pathname` are set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {origin: 'https://a.com', pathname: '/b'})
.processSync('')
.toString(),
[
'<head>',
'<link rel="canonical" href="https://a.com/b">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[name=description]` if `description` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {description: 'Hello, World!'})
.processSync('')
.toString(),
[
'<head>',
'<meta name="description" content="Hello, World!">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[name=keyword]` if `tags` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {tags: ['a', 'b', 'c']})
.processSync('')
.toString(),
[
'<head>',
'<meta name="keywords" content="a, b, c">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[name=keyword]` if `siteTags` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {siteTags: ['a', 'b', 'c']})
.processSync('')
.toString(),
[
'<head>',
'<meta name="keywords" content="a, b, c">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should combine `tags` and `siteTags` if both are set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {siteTags: ['b', 'c'], tags: ['a', 'b']})
.processSync('')
.toString(),
[
'<head>',
'<meta name="keywords" content="a, b, c">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[name=author]` if `author` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {author: 'Jane X. Doe'})
.processSync('')
.toString(),
[
'<head>',
'<meta name="author" content="Jane X. Doe">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[name=copyright]` if `author` is set and `copyright` is on',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {author: 'Jane X. Doe', copyright: true})
.processSync('')
.toString(),
[
'<head>',
'<meta name="author" content="Jane X. Doe">',
'<meta name="copyright" content="© ' +
currentYear +
' Jane X. Doe">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[name=author]` if `siteAuthor` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {siteAuthor: 'Jane X. Doe'})
.processSync('')
.toString(),
[
'<head>',
'<meta name="author" content="Jane X. Doe">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[name=copyright]` if `siteAuthor` is set and `copyright` is on',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {copyright: true, siteAuthor: 'Jane X. Doe'})
.processSync('')
.toString(),
[
'<head>',
'<meta name="author" content="Jane X. Doe">',
'<meta name="copyright" content="© ' +
currentYear +
' Jane X. Doe">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should use the given `published` in `meta[name=copyright]`',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
author: 'Jane X. Doe',
copyright: true,
published: '2018'
})
.processSync('')
.toString(),
[
'<head>',
'<meta name="author" content="Jane X. Doe">',
'<meta name="copyright" content="© 2018 Jane X. Doe">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[name=theme-color]` if `color` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {color: '123456'})
.processSync('')
.toString(),
[
'<head>',
'<meta name="theme-color" content="#123456">',
'</head>',
''
].join('\n')
)
}
)
await t.test('should not add an extra `#` to colors', async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {color: '#123456'})
.processSync('')
.toString(),
[
'<head>',
'<meta name="theme-color" content="#123456">',
'</head>',
''
].join('\n')
)
})
await t.test(
'should add a `meta[name=twitter:card]` if `twitter` is true',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {twitter: true})
.processSync('')
.toString(),
[
'<head>',
'<meta name="twitter:card" content="summary">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should *not* add a `meta[name=twitter:card][content=summary]` if `og` is true',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {og: true, twitter: true})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="website">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[name=twitter:image]` if `image` is set and `twitter` is true, and use a `twitter:card=summary_large_image`',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
image: 'https://example.com/index.png',
twitter: true
})
.processSync('')
.toString(),
[
'<head>',
'<meta name="twitter:card" content="summary_large_image">',
'<meta name="twitter:image" content="https://example.com/index.png">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[name=twitter:image:alt]` if an `image.alt` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
image: {alt: 'A', url: 'https://example.com/index.png'},
twitter: true
})
.processSync('')
.toString(),
[
'<head>',
'<meta name="twitter:card" content="summary_large_image">',
'<meta name="twitter:image" content="https://example.com/index.png">',
'<meta name="twitter:image:alt" content="A">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[name=twitter:site]` if `siteTwitter` is set and `twitter` is true',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {siteTwitter: 'example', twitter: true})
.processSync('')
.toString(),
[
'<head>',
'<meta name="twitter:card" content="summary">',
'<meta name="twitter:site" content="@example">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should not add an extra `@` to twitter sites',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {siteTwitter: '@example', twitter: true})
.processSync('')
.toString(),
[
'<head>',
'<meta name="twitter:card" content="summary">',
'<meta name="twitter:site" content="@example">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[name=twitter:creator]` if `authorTwitter` is set and `twitter` is true',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {authorTwitter: 'example', twitter: true})
.processSync('')
.toString(),
[
'<head>',
'<meta name="twitter:card" content="summary">',
'<meta name="twitter:creator" content="@example">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should not add an extra `@` to twitter authors',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {authorTwitter: '@example', twitter: true})
.processSync('')
.toString(),
[
'<head>',
'<meta name="twitter:card" content="summary">',
'<meta name="twitter:creator" content="@example">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=og:type][content=website]` if `og` is true',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {og: true})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="website">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=og:title]` if `og` is true and `title` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {og: true, title: 'About'})
.processSync('')
.toString(),
[
'<head>',
'<title>About</title>',
'<meta property="og:type" content="website">',
'<meta property="og:title" content="About">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=og:title]` if `og` is true, `ogNameInTitle` is true, and `title` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {og: true, ogNameInTitle: true, title: 'About'})
.processSync('')
.toString(),
[
'<head>',
'<title>About</title>',
'<meta property="og:type" content="website">',
'<meta property="og:title" content="About">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=og:title]` if `og` is true, `ogNameInTitle` is true, `title` is set, and `name` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
name: 'Site',
og: true,
ogNameInTitle: true,
title: 'About'
})
.processSync('')
.toString(),
[
'<head>',
'<title>About - Site</title>',
'<meta property="og:type" content="website">',
'<meta property="og:site_name" content="Site">',
'<meta property="og:title" content="About - Site">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=og:site_name]` if `og` is true and a `name` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {name: 'Example', og: true})
.processSync('')
.toString(),
[
'<head>',
'<title>Example</title>',
'<meta property="og:type" content="website">',
'<meta property="og:site_name" content="Example">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=og:description]` if `og` is true and `description` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {description: 'Lorem ipsum', og: true})
.processSync('')
.toString(),
[
'<head>',
'<meta name="description" content="Lorem ipsum">',
'<meta property="og:type" content="website">',
'<meta property="og:description" content="Lorem ipsum">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=og:url]` if `og` is true',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {og: true, origin: 'https://a.com'})
.processSync('')
.toString(),
[
'<head>',
'<link rel="canonical" href="https://a.com/">',
'<meta property="og:type" content="website">',
'<meta property="og:url" content="https://a.com/">',
'</head>',
''
].join('\n')
)
}
)
await t.test('should ignore `image` by default', async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {image: 'https://example.com/index.png'})
.processSync('')
.toString(),
'<head></head>\n'
)
})
await t.test(
'should add a `meta[property=og:image]` if `image` is set and `og` is on',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {image: 'https://example.com/index.png', og: true})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="website">',
'<meta property="og:image" content="https://example.com/index.png">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=og:image:alt]` if `image` is an object with an alt',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
image: {alt: 'Alpha', url: 'https://example.com/index.png'},
og: true
})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="website">',
'<meta property="og:image" content="https://example.com/index.png">',
'<meta property="og:image:alt" content="Alpha">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=og:image:width]` if `image` is an object with a `width`',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
og: true,
image: {url: 'https://example.com/index.png', width: 1}
})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="website">',
'<meta property="og:image" content="https://example.com/index.png">',
'<meta property="og:image:width" content="1">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=og:image:height]` if `image` is an object with a `height`',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
og: true,
image: {height: 1, url: 'https://example.com/index.png'}
})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="website">',
'<meta property="og:image" content="https://example.com/index.png">',
'<meta property="og:image:height" content="1">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should *not* add a `meta[property=og:image]` if `image` is an object without a `url`',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
// @ts-expect-error: check how the runtime handles missing `url`.
.use(rehypeMeta, {
image: {alt: '?', height: 1, width: 1},
og: true
})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="website">',
'</head>',
''
].join('\n')
)
}
)
await t.test('should add up to six images', async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
image: ['a', 'b', 'c', 'd', 'e', 'f', 'g'],
og: true
})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="website">',
'<meta property="og:image" content="a">',
'<meta property="og:image" content="b">',
'<meta property="og:image" content="c">',
'<meta property="og:image" content="d">',
'<meta property="og:image" content="e">',
'<meta property="og:image" content="f">',
'</head>',
''
].join('\n')
)
})
await t.test(
'should add a `meta[property=og:type][content=article]` if `og` is true and `type` is `article`',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {og: true, type: 'article'})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="article">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=article:published_time]` if `og` is true, `type` is `article`, and `published` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
og: true,
published: new Date(1_234_567_890_123),
type: 'article'
})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="article">',
'<meta property="article:published_time" content="2009-02-13T23:31:30.123Z">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=article:modified_time]` if `og` is true, `type` is `article`, and `modified` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
og: true,
modified: new Date(1_234_567_890_123),
type: 'article'
})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="article">',
'<meta property="article:modified_time" content="2009-02-13T23:31:30.123Z">',
'</head>',
''
].join('\n')
)
}
)
await t.test('should support dates as strings', async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
og: true,
published: '2019-12-04T22:00:00.000Z',
type: 'article'
})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="article">',
'<meta property="article:published_time" content="2019-12-04T22:00:00.000Z">',
'</head>',
''
].join('\n')
)
})
await t.test(
'should add a `meta[property=article:author]` if `og` is true, `type` is `article`, and `authorFacebook` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
authorFacebook: 'example',
og: true,
type: 'article'
})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="article">',
'<meta property="article:author" content="https://www.facebook.com/example">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add a `meta[property=article:section]` if `og` is true, `type` is `article`, and `section` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {og: true, section: 'a', type: 'article'})
.processSync('')
.toString(),
[
'<head>',
'<meta property="og:type" content="article">',
'<meta property="article:section" content="a">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add up to 6 `meta[property=article:tag]` if `og` is true, `type` is `article`, and `tags` are set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {
og: true,
tags: ['a', 'b', 'c', 'd', 'e', 'f', 'g'],
type: 'article'
})
.processSync('')
.toString(),
[
'<head>',
'<meta name="keywords" content="a, b, c, d, e, f, g">',
'<meta property="og:type" content="article">',
'<meta property="article:tag" content="a">',
'<meta property="article:tag" content="b">',
'<meta property="article:tag" content="c">',
'<meta property="article:tag" content="d">',
'<meta property="article:tag" content="e">',
'<meta property="article:tag" content="f">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add `meta[name=twitter:label1]`, `meta[name=twitter:data1]` if `twitter` is true and `section` is set',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {section: 'a', twitter: true})
.processSync('')
.toString(),
[
'<head>',
'<meta name="twitter:card" content="summary">',
'<meta name="twitter:label1" content="Posted in">',
'<meta name="twitter:data1" content="a">',
'</head>',
''
].join('\n')
)
}
)
await t.test(
'should add `meta[name=twitter:label1]`, `meta[name=twitter:data1]` if `twitter` is true, `readingTime` is set, and section is not',
async function () {
assert.equal(
rehype()
.data('settings', {fragment: true})
.use(rehypeMeta, {readingTime: 0.1, twitter: true})
.processSync('')
.toString(),
[
'<head>',
'<meta name="twitter:card" content="summary">',
'<meta name="twitter:label1" content="Reading time">',
'<meta name="twitter:data1" content="1 minute">',
'</head>',
''
].join('\n')
)