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hono/runtime_tests/deno-jsx/jsx.test.tsx

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/** @jsxImportSource ../../src/jsx */
import { Style, css } from '../../src/helper/css/index.ts'
import { Suspense, renderToReadableStream } from '../../src/jsx/streaming.ts'
import type { HtmlEscapedString } from '../../src/utils/html.ts'
import { HtmlEscapedCallbackPhase, resolveCallback } from '../../src/utils/html.ts'
import { assertEquals } from '../deno/deps.ts'
Deno.test('JSX', () => {
const Component = ({ name }: { name: string }) => <span>{name}</span>
const html = (
<div>
<h1 id={'<Hello>'}>
<Component name={'<Hono>'} />
</h1>
</div>
)
assertEquals(html.toString(), '<div><h1 id="&lt;Hello&gt;"><span>&lt;Hono&gt;</span></h1></div>')
})
Deno.test('JSX: Fragment', () => {
const fragment = (
<>
<p>1</p>
<p>2</p>
</>
)
assertEquals(fragment.toString(), '<p>1</p><p>2</p>')
})
Deno.test('JSX: Async Component', async () => {
const Component = async ({ name }: { name: string }) =>
new Promise<HtmlEscapedString>((resolve) => setTimeout(() => resolve(<span>{name}</span>), 10))
const stream = renderToReadableStream(
<div>
<Component name={'<Hono>'} />
</div>
)
const chunks: string[] = []
const textDecoder = new TextDecoder()
// eslint-disable-next-line @typescript-eslint/no-explicit-any
for await (const chunk of stream as any) {
chunks.push(textDecoder.decode(chunk))
}
assertEquals(chunks.join(''), '<div><span>&lt;Hono&gt;</span></div>')
})
Deno.test('JSX: Suspense', async () => {
const Content = () => {
const content = new Promise<HtmlEscapedString>((resolve) =>
setTimeout(() => resolve(<h1>Hello</h1>), 10)
)
return content
}
const stream = renderToReadableStream(
<Suspense fallback={<p>Loading...</p>}>
<Content />
</Suspense>
)
const chunks: string[] = []
const textDecoder = new TextDecoder()
// eslint-disable-next-line @typescript-eslint/no-explicit-any
for await (const chunk of stream as any) {
chunks.push(textDecoder.decode(chunk))
}
assertEquals(chunks, [
'<template id="H:0"></template><p>Loading...</p><!--/$-->',
`<template data-hono-target="H:0"><h1>Hello</h1></template><script>
((d,c,n) => {
c=d.currentScript.previousSibling
d=d.getElementById('H:0')
if(!d)return
do{n=d.nextSibling;n.remove()}while(n.nodeType!=8||n.nodeValue!='/$')
d.replaceWith(c.content)
})(document)
</script>`,
])
})
Deno.test('JSX: css', async () => {
const className = css`
color: red;
`
const html = (
<html>
<head>
<Style />
</head>
<body>
<div class={className}></div>
</body>
</html>
)
const awaitedHtml = await html
const htmlEscapedString = 'callbacks' in awaitedHtml ? awaitedHtml : await awaitedHtml.toString()
assertEquals(
await resolveCallback(htmlEscapedString, HtmlEscapedCallbackPhase.Stringify, false, {}),
'<html><head><style id="hono-css">.css-3142110215{color:red}</style></head><body><div class="css-3142110215"></div></body></html>'
)
})