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index.test.ts
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index.test.ts
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/**
* Copyright 2022 Pranav Karawale
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { test } from 'uvu';
import assert from 'uvu/assert';
import { unified } from 'unified';
import remarkParse from 'remark-parse';
import remarkRehype from 'remark-rehype';
import rehypeStringify from 'rehype-stringify';
import { getHighlighter } from 'shiki';
import rehypeShiki from './index';
test('Highlights `pre` nodes', async () => {
const file = `
# Hi
\`\`\`typescript
const foo = 'bar';
\`\`\`
`;
const highlighter = await getHighlighter({ theme: 'nord' });
const html = await unified()
.use(remarkParse)
.use(remarkRehype)
.use(rehypeStringify)
.use(rehypeShiki, { highlighter })
.process(file);
assert.ok(
html.value.includes(
`<pre class="shiki" style="background-color: #2e3440ff">`
)
);
assert.ok(
html.value.includes(
`<span class="line"><span style="color: #81A1C1">const</span><span style="color: #D8DEE9FF"> </span><span style="color: #D8DEE9">foo</span><span style="color: #D8DEE9FF"> </span><span style="color: #81A1C1">=</span><span style="color: #D8DEE9FF"> </span><span style="color: #ECEFF4">'</span><span style="color: #A3BE8C">bar</span><span style="color: #ECEFF4">'</span><span style="color: #81A1C1">;</span></span>`
)
);
});
test('Highlights `raw` nodes', async () => {
const file = `
# Hi
<pre>
<code class="language-typescript">const foo = 'bar';</code>
<pre>
`;
const highlighter = await getHighlighter({ theme: 'nord' });
const html = await unified()
.use(remarkParse)
.use(remarkRehype, {
allowDangerousHtml: true,
})
.use(rehypeStringify)
.use(rehypeShiki, { highlighter })
.process(file);
assert.ok(
html.value.includes(
`<pre class="shiki" style="background-color: #2e3440ff">`
)
);
assert.ok(
html.value.includes(
`<span class="line"><span style="color: #81A1C1">const</span><span style="color: #D8DEE9FF"> </span><span style="color: #D8DEE9">foo</span><span style="color: #D8DEE9FF"> </span><span style="color: #81A1C1">=</span><span style="color: #D8DEE9FF"> </span><span style="color: #ECEFF4">'</span><span style="color: #A3BE8C">bar</span><span style="color: #ECEFF4">'</span><span style="color: #81A1C1">;</span></span>`
)
);
});
test('Handles plaintext codeblocks', async () => {
const file = `
# Hi
\`\`\`
This is a simple codeblock.
\`\`\`
`;
const highlighter = await getHighlighter({ theme: 'nord' });
const html = await unified()
.use(remarkParse)
.use(remarkRehype)
.use(rehypeStringify)
.use(rehypeShiki, { highlighter })
.process(file);
assert.ok(
html.value.includes(
`<pre class="shiki" style="background-color: #2e3440ff">`
)
);
assert.ok(
html.value.includes(
`<span class="line"><span style="color: #d8dee9ff">This is a simple codeblock.`
)
);
});
test.run();