73 lines
2.4 KiB
JavaScript
73 lines
2.4 KiB
JavaScript
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// Component behavior in both worlds: plain string rendering without a DOM,
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// and mount/update/morph/proxy semantics inside happy-dom.
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import { test, before } from 'node:test'
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import assert from 'node:assert'
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import { Window } from 'happy-dom'
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import serverHtml from '@choojs/html/server'
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test('renders via createElement on the server (no window)', async () => {
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const { default: Component } = await import('../index.js')
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class Title extends Component {
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createElement (text) {
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return serverHtml`<h1>${text}</h1>`
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}
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update () { return false }
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}
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const res = new Title().render('hello')
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assert.strictEqual(res.toString(), '<h1>hello</h1>')
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})
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test('browser: render, mount, update morphs in place, proxy stands in', async () => {
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const win = new Window()
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globalThis.window = win
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globalThis.document = win.document
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// module registry caches per specifier; component/index.js re-evaluates
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// _hasWindow per instance, so importing after globals are set is enough
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const { default: Component } = await import('../index.js?browser')
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const { default: html } = await import('@choojs/html/browser')
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const { default: morph } = await import('@choojs/html/morph')
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class Counter extends Component {
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createElement (n) {
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this.n = n
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return html`<div>count ${n}</div>`
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}
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update (n) {
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return n !== this.n
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}
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}
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const counter = new Counter('counter')
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const el = counter.render(0)
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assert.ok(el.getAttribute('data-nanocomponent'), 'root node branded')
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document.body.appendChild(el)
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assert.strictEqual(counter.element, el, 'element getter finds mounted node')
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// unchanged args: update() false, no morph, proxy returned
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const proxy = counter.render(0)
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assert.ok(proxy.hasAttribute('data-proxy'), 'returns proxy while mounted')
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assert.ok(proxy.isSameNode(el), 'proxy claims identity of the mounted node')
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// changed args: update() true, mounted node morphs in place
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counter.render(1)
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assert.strictEqual(el.textContent, 'count 1', 'mounted node updated in place')
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// and the proxy plays correctly with nanomorph in a parent view
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const parent = (n) => {
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const inner = counter.render(n)
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return html`<main>${inner}</main>`
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}
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const treeA = parent(1)
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// simulate first full-page render: mounted component moves into the tree
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assert.ok(treeA.querySelector('[data-proxy]') || treeA.contains(el))
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document.body.removeChild(el)
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})
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