1 files changed, 118 insertions, 0 deletions
diff --git a/__tests__/link-meta-utils.ts b/__tests__/link-meta-utils.ts
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+++ b/__tests__/link-meta-utils.ts
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+import {LikelyType, getLinkMeta} from '../src/lib/link-meta'
+
+const exampleComHtml = `<!doctype html>
+<html>
+<head>
+    <title>Example Domain</title>
+    <meta name="description" content="An example website">
+
+    <meta charset="utf-8" />
+    <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <style type="text/css">
+    body {
+        background-color: #f0f0f2;
+        margin: 0;
+        padding: 0;
+        font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
+
+    }
+    div {
+        width: 600px;
+        margin: 5em auto;
+        padding: 2em;
+        background-color: #fdfdff;
+        border-radius: 0.5em;
+        box-shadow: 2px 3px 7px 2px rgba(0,0,0,0.02);
+    }
+    a:link, a:visited {
+        color: #38488f;
+        text-decoration: none;
+    }
+    @media (max-width: 700px) {
+        div {
+            margin: 0 auto;
+            width: auto;
+        }
+    }
+    </style>
+</head>
+
+<body>
+<div>
+    <h1>Example Domain</h1>
+    <p>This domain is for use in illustrative examples in documents. You may use this
+    domain in literature without prior coordination or asking for permission.</p>
+    <p><a href="https://www.iana.org/domains/example">More information...</a></p>
+</div>
+</body>
+</html>`
+
+describe('getLinkMeta', () => {
+  const inputs = [
+    '',
+    'httpbadurl',
+    'https://example.com',
+    'https://example.com/index.html',
+    'https://example.com/image.png',
+    'https://example.com/video.avi',
+    'https://example.com/audio.ogg',
+    'https://example.com/javascript.js',
+  ]
+  const outputs = [
+    {
+      error: 'Invalid URL',
+      likelyType: LikelyType.Other,
+      url: '',
+    },
+    {
+      error: 'Invalid URL',
+      likelyType: LikelyType.Other,
+      url: 'httpbadurl',
+    },
+    {
+      likelyType: LikelyType.HTML,
+      url: 'https://example.com',
+      title: 'Example Domain',
+      description: 'An example website',
+    },
+    {
+      likelyType: LikelyType.HTML,
+      url: 'https://example.com/index.html',
+      title: 'Example Domain',
+      description: 'An example website',
+    },
+    {
+      likelyType: LikelyType.Image,
+      url: 'https://example.com/image.png',
+    },
+    {
+      likelyType: LikelyType.Video,
+      url: 'https://example.com/video.avi',
+    },
+    {
+      likelyType: LikelyType.Audio,
+      url: 'https://example.com/audio.ogg',
+    },
+    {
+      likelyType: LikelyType.Other,
+      url: 'https://example.com/javascript.js',
+    },
+  ]
+  it('correctly handles a set of text inputs', async () => {
+    for (let i = 0; i < inputs.length; i++) {
+      global.fetch = jest.fn().mockImplementationOnce(() => {
+        return new Promise((resolve, reject) => {
+          resolve({
+            ok: true,
+            status: 200,
+            text: () => exampleComHtml,
+          })
+        })
+      })
+      const input = inputs[i]
+      const output = await getLinkMeta(input)
+      expect(output).toEqual(outputs[i])
+    }
+  })
+})