openpencil/packages/dom-css/tests/conversion.test.ts
2026-06-30 10:51:37 +03:00

413 lines
14 KiB
TypeScript

import { describe, expect, it } from 'bun:test'
import type { SceneGraph, SceneNode } from '@open-pencil/core/scene-graph'
import type { DesignElement } from '../src/index'
import {
createHeadlessCSSRuntime,
designDocumentToSceneGraph,
htmlToDesignDocument,
htmlToSceneGraph,
sceneGraphToDesignDocument,
serializeHTML
} from '../src/index'
import { TEST_COLORS, cardCSS, cardHTML, fixtureCSS, fixtureHTML } from './helpers'
const TRANSPARENT_PIXEL_DATA_URL =
'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADElEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg=='
function expectFrame(node: SceneNode | undefined) {
expect(node?.type).toBe('FRAME')
if (node?.type !== 'FRAME') throw new Error('Expected frame node')
return node
}
function expectText(node: SceneNode | undefined) {
expect(node?.type).toBe('TEXT')
if (node?.type !== 'TEXT') throw new Error('Expected text node')
return node
}
function createStyleRoundTripGraph() {
return designDocumentToSceneGraph({
type: 'document',
children: [
{
type: 'element',
tagName: 'section',
attrs: { class: 'panel' },
computedStyle: {
display: 'flex',
'flex-direction': 'column',
width: '240px',
height: '120px',
'padding-block': '8px',
'padding-inline': '12px',
'border-color': TEST_COLORS.slate200,
'border-style': 'dashed',
'border-top-width': '0px',
'border-right-width': '2px',
'border-bottom-width': '0px',
'border-left-width': '4px',
opacity: '0.75',
'box-shadow': `0px 8px 24px 0px ${TEST_COLORS.slateShadow}`
},
children: [
{
type: 'element',
tagName: 'h1',
attrs: {},
computedStyle: {
color: TEST_COLORS.slate950,
'font-family': 'Inter, sans-serif',
'font-size': '18px',
'font-weight': '700',
'line-height': '24px',
'letter-spacing': '0.2px',
'text-align': 'center',
'text-transform': 'uppercase',
'white-space': 'nowrap',
opacity: '0.5',
'text-shadow': `0px 1px 2px 0px ${TEST_COLORS.slateShadow}`
},
children: [{ type: 'text', text: 'Round trip' }]
}
]
}
]
})
}
function expectStyleRoundTripPanel(graph: SceneGraph) {
const page = graph.getPages()[0]
const panel = expectFrame(page ? graph.getChildren(page.id)[0] : undefined)
expect(panel.paddingTop).toBe(8)
expect(panel.paddingRight).toBe(12)
expect(panel.paddingBottom).toBe(8)
expect(panel.paddingLeft).toBe(12)
expect(panel.borderTopWeight).toBe(0)
expect(panel.borderRightWeight).toBe(2)
expect(panel.borderBottomWeight).toBe(0)
expect(panel.borderLeftWeight).toBe(4)
expect(panel.dashPattern).toEqual([12, 8])
expect(panel.opacity).toBe(0.75)
expect(panel.effects[0]?.type).toBe('DROP_SHADOW')
return panel
}
function expectStyleRoundTripText(graph: SceneGraph, panel: SceneNode) {
const heading = expectText(graph.getChildren(panel.id)[0])
expect(heading.fontSize).toBe(18)
expect(heading.fontWeight).toBe(700)
expect(heading.lineHeight).toBe(24)
expect(heading.letterSpacing).toBe(0.2)
expect(heading.textAlignHorizontal).toBe('CENTER')
expect(heading.textCase).toBe('UPPER')
expect(heading.maxLines).toBe(1)
expect(heading.opacity).toBe(0.5)
expect(heading.effects[0]?.type).toBe('DROP_SHADOW')
}
function expectRoundTripPanelStyle(element: DesignElement) {
expect(element.inlineStyle?.['padding-block']).toBe('8px')
expect(element.inlineStyle?.['padding-inline']).toBe('12px')
expect(element.inlineStyle?.['border-style']).toBe('dashed')
expect(element.inlineStyle?.['border-top-width']).toBe('0px')
expect(element.inlineStyle?.['border-left-width']).toBe('4px')
expect(element.inlineStyle?.opacity).toBe('0.75')
expect(element.inlineStyle?.['box-shadow']).toContain('24px')
}
function expectRoundTripHeadingStyle(element: DesignElement) {
expect(element.inlineStyle?.['font-size']).toBe('18px')
expect(element.inlineStyle?.['font-weight']).toBe('700')
expect(element.inlineStyle?.['line-height']).toBe('24px')
expect(element.inlineStyle?.['letter-spacing']).toBe('0.2px')
expect(element.inlineStyle?.['text-align']).toBe('center')
expect(element.inlineStyle?.['text-transform']).toBe('uppercase')
expect(element.inlineStyle?.['white-space']).toBe('nowrap')
expect(element.inlineStyle?.opacity).toBe('0.5')
expect(element.inlineStyle?.['text-shadow']).toContain('2px')
}
function expectStyleRoundTripHTML(graph: SceneGraph) {
const roundTrip = sceneGraphToDesignDocument(graph)
const root = roundTrip.children[0]
expect(root?.type).toBe('element')
if (root?.type !== 'element') throw new Error('Expected root element')
const roundTripPanel = root.children[0]
expect(roundTripPanel?.type).toBe('element')
if (roundTripPanel?.type !== 'element') throw new Error('Expected panel element')
expectRoundTripPanelStyle(roundTripPanel)
const roundTripHeading = roundTripPanel.children[0]
expect(roundTripHeading?.type).toBe('element')
if (roundTripHeading?.type !== 'element') throw new Error('Expected heading element')
expectRoundTripHeadingStyle(roundTripHeading)
}
describe('@open-pencil/dom-css conversion', () => {
it('converts HTML and CSS to DesignDOM with one API call', async () => {
const document = await htmlToDesignDocument(cardHTML, {
cssText: cardCSS,
runtime: createHeadlessCSSRuntime()
})
const card = document.children[0]
expect(card?.type).toBe('element')
if (card?.type !== 'element') return
expect(card.computedStyle?.width).toBe('320px')
expect(card.computedStyle?.['border-radius']).toBe('16px')
})
it('converts HTML and CSS to a scene graph with one API call', async () => {
const graph = await htmlToSceneGraph(cardHTML, {
cssText: cardCSS,
runtime: createHeadlessCSSRuntime()
})
const page = graph.getPages()[0]
const card = page ? graph.getChildren(page.id)[0] : undefined
expect(card?.type).toBe('FRAME')
if (card?.type !== 'FRAME') return
expect(card.width).toBe(320)
expect(card.height).toBe(180)
expect(card.layoutMode).toBe('VERTICAL')
expect(card.itemSpacing).toBe(12)
expect(card.paddingLeft).toBe(24)
expect(card.cornerRadius).toBe(16)
expect(card.effects[0]?.type).toBe('DROP_SHADOW')
})
it('applies embedded HTML style blocks without creating style layers', async () => {
const graph = await htmlToSceneGraph(
`<!doctype html>
<html>
<head>
<style>
.card { display: flex; flex-direction: column; gap: 10px; width: 280px; height: 140px; padding: 20px; }
</style>
</head>
<body><article class="card"><h1>Embedded CSS</h1></article></body>
</html>`,
{ runtime: createHeadlessCSSRuntime() }
)
const page = graph.getPages()[0]
expect(page).toBeDefined()
if (!page) return
const card = graph.getChildren(page.id)[0]
expect(card?.type).toBe('FRAME')
if (card?.type !== 'FRAME') return
expect(card.name).toBe('card')
expect(card.width).toBe(280)
expect(card.height).toBe(140)
expect(card.itemSpacing).toBe(10)
expect(card.paddingLeft).toBe(20)
expect(graph.getChildren(page.id)).toHaveLength(1)
})
it('keeps box-like inline controls as editable frames', async () => {
const graph = await htmlToSceneGraph(fixtureHTML, {
cssText: fixtureCSS,
runtime: createHeadlessCSSRuntime()
})
const page = graph.getPages()[0]
const shell = page ? graph.getChildren(page.id)[0] : undefined
expect(shell?.type).toBe('FRAME')
if (shell?.type !== 'FRAME') return
const [navbar, input] = graph.getChildren(shell.id)
expect(navbar?.type).toBe('FRAME')
expect(input?.type).toBe('FRAME')
if (navbar?.type !== 'FRAME' || input?.type !== 'FRAME') return
expect(navbar.primaryAxisAlign).toBe('SPACE_BETWEEN')
expect(input.width).toBe(312)
expect(input.paddingLeft).toBe(12)
const badge = graph.getChildren(navbar.id)[1]
expect(badge?.type).toBe('FRAME')
if (badge?.type !== 'FRAME') return
expect(badge.cornerRadius).toBe(9999)
expect(graph.getChildren(badge.id)[0]?.type).toBe('TEXT')
})
it('projects scene graph output back into DesignDOM HTML', async () => {
const graph = await htmlToSceneGraph(cardHTML, {
cssText: cardCSS,
runtime: createHeadlessCSSRuntime()
})
const document = sceneGraphToDesignDocument(graph)
const html = serializeHTML(document)
expect(html).toContain('OpenPencil')
expect(html).toContain('box-shadow')
})
it('projects a manually built DesignDOM document into a scene graph', async () => {
const runtime = createHeadlessCSSRuntime()
const document = await runtime.computeStyles(runtime.parseHTML(cardHTML), cardCSS)
const graph = designDocumentToSceneGraph(document)
const page = graph.getPages()[0]
const card = page ? graph.getChildren(page.id)[0] : undefined
expect(card?.type).toBe('FRAME')
if (card?.type !== 'FRAME') return
expect(card.fills[0]?.type).toBe('SOLID')
expect(card.strokes[0]?.weight).toBe(1)
})
it('maps data URL images, object fit, and aspect ratio', () => {
const graph = designDocumentToSceneGraph({
type: 'document',
children: [
{
type: 'element',
tagName: 'img',
attrs: { src: TRANSPARENT_PIXEL_DATA_URL },
computedStyle: {
'aspect-ratio': '16 / 9',
width: '320px',
'object-fit': 'contain'
},
children: []
}
]
})
const page = graph.getPages()[0]
const image = expectFrame(page ? graph.getChildren(page.id)[0] : undefined)
const fill = image.fills[0]
expect(image.width).toBe(320)
expect(image.height).toBe(180)
expect(fill?.type).toBe('IMAGE')
expect(fill?.imageScaleMode).toBe('FIT')
expect(fill?.imageHash).toBeDefined()
expect(fill?.imageHash ? graph.images.has(fill.imageHash) : false).toBe(true)
const roundTrip = sceneGraphToDesignDocument(graph)
const root = roundTrip.children[0]
expect(root?.type).toBe('element')
if (root?.type !== 'element') throw new Error('Expected root element')
const roundTripImage = root.children[0]
expect(roundTripImage?.type).toBe('element')
if (roundTripImage?.type !== 'element') throw new Error('Expected image element')
expect(roundTripImage.tagName).toBe('img')
expect(roundTripImage.inlineStyle?.['aspect-ratio']).toBe('320 / 180')
expect(roundTripImage.inlineStyle?.['object-fit']).toBe('contain')
expect(roundTripImage.attrs.src).toStartWith('data:image/png;base64,')
})
it('round-trips logical padding, side borders, opacity, and text style fields', () => {
const graph = createStyleRoundTripGraph()
const panel = expectStyleRoundTripPanel(graph)
expectStyleRoundTripText(graph, panel)
expectStyleRoundTripHTML(graph)
})
it('maps flex row and column gaps by axis', () => {
const graph = designDocumentToSceneGraph({
type: 'document',
children: [
{
type: 'element',
tagName: 'div',
attrs: { class: 'column-wrap' },
computedStyle: {
display: 'flex',
'flex-direction': 'column',
'flex-wrap': 'wrap',
'row-gap': '14px',
'column-gap': '24px'
},
children: []
}
]
})
const page = graph.getPages()[0]
const stack = expectFrame(page ? graph.getChildren(page.id)[0] : undefined)
expect(stack.layoutMode).toBe('VERTICAL')
expect(stack.layoutWrap).toBe('WRAP')
expect(stack.itemSpacing).toBe(14)
expect(stack.counterAxisSpacing).toBe(24)
const roundTrip = sceneGraphToDesignDocument(graph)
const root = roundTrip.children[0]
expect(root?.type).toBe('element')
if (root?.type !== 'element') return
const roundTripStack = root.children[0]
expect(roundTripStack?.type).toBe('element')
if (roundTripStack?.type !== 'element') return
expect(roundTripStack.inlineStyle?.['row-gap']).toBe('14px')
expect(roundTripStack.inlineStyle?.['column-gap']).toBe('24px')
})
it('maps flex wrapping, align-self, clipping, and absolute positioning', () => {
const graph = designDocumentToSceneGraph({
type: 'document',
children: [
{
type: 'element',
tagName: 'div',
attrs: { class: 'wrap' },
computedStyle: {
display: 'flex',
'flex-wrap': 'wrap',
gap: '12px',
'row-gap': '20px',
overflow: 'clip',
width: '240px',
height: '120px'
},
children: [
{
type: 'element',
tagName: 'div',
attrs: { class: 'absolute' },
computedStyle: {
position: 'absolute',
left: '16px',
top: '24px',
'align-self': 'center',
width: '80px',
height: '32px'
},
children: []
}
]
}
]
})
const page = graph.getPages()[0]
const wrap = expectFrame(page ? graph.getChildren(page.id)[0] : undefined)
const absolute = expectFrame(graph.getChildren(wrap.id)[0])
expect(wrap.layoutWrap).toBe('WRAP')
expect(wrap.counterAxisSpacing).toBe(20)
expect(wrap.clipsContent).toBe(true)
expect(absolute.layoutPositioning).toBe('ABSOLUTE')
expect(absolute.layoutAlignSelf).toBe('CENTER')
expect(absolute.x).toBe(16)
expect(absolute.y).toBe(24)
const roundTrip = sceneGraphToDesignDocument(graph)
const root = roundTrip.children[0]
expect(root?.type).toBe('element')
if (root?.type !== 'element') return
const roundTripWrap = root.children[0]
expect(roundTripWrap?.type).toBe('element')
if (roundTripWrap?.type !== 'element') return
expect(roundTripWrap.inlineStyle?.['flex-wrap']).toBe('wrap')
expect(roundTripWrap.inlineStyle?.['row-gap']).toBe('20px')
const roundTripAbsolute = roundTripWrap.children[0]
expect(roundTripAbsolute?.type).toBe('element')
if (roundTripAbsolute?.type !== 'element') return
expect(roundTripAbsolute.inlineStyle?.position).toBe('absolute')
expect(roundTripAbsolute.inlineStyle?.left).toBe('16px')
expect(roundTripAbsolute.inlineStyle?.top).toBe('24px')
expect(roundTripAbsolute.inlineStyle?.['align-self']).toBe('center')
})
})