chore: import upstream snapshot with attribution

apps/sim/lib/pptx-renderer/sim-pptx-viewer.test.ts

@@ -0,0 +1,65 @@
+/**
+ * @vitest-environment jsdom
+ */
+import JSZip from 'jszip'
+import { describe, expect, it, vi } from 'vitest'
+import { openSimPptxViewer, SIM_PPTX_LIST_OPTIONS } from '@/lib/pptx-renderer/sim-pptx-viewer'
+
+async function createMinimalPptx(): Promise<ArrayBuffer> {
+  const zip = new JSZip()
+  zip.file('[Content_Types].xml', '<Types />')
+  zip.file(
+    'ppt/presentation.xml',
+    `<p:presentation xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">
+      <p:sldSz cx="9144000" cy="5143500" />
+      <p:sldIdLst><p:sldId id="256" r:id="rId1" /></p:sldIdLst>
+    </p:presentation>`
+  )
+  zip.file(
+    'ppt/_rels/presentation.xml.rels',
+    `<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
+      <Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slide" Target="slides/slide1.xml" />
+    </Relationships>`
+  )
+  zip.file(
+    'ppt/slides/slide1.xml',
+    `<p:sld xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main">
+      <p:cSld>
+        <p:spTree>
+          <p:nvGrpSpPr><p:cNvPr id="1" name="" /><p:cNvGrpSpPr /><p:nvPr /></p:nvGrpSpPr>
+          <p:grpSpPr />
+        </p:spTree>
+      </p:cSld>
+    </p:sld>`
+  )
+  zip.file('ppt/slides/_rels/slide1.xml.rels', '<Relationships />')
+  return zip.generateAsync({ type: 'arraybuffer' })
+}
+
+describe('openSimPptxViewer', () => {
+  it('renders a minimal PPTX and cleans up the container on destroy', async () => {
+    const container = document.createElement('div')
+    Object.defineProperty(container, 'clientWidth', { configurable: true, value: 960 })
+    const onRenderComplete = vi.fn()
+
+    const handle = await openSimPptxViewer({
+      buffer: await createMinimalPptx(),
+      container,
+      onRenderComplete,
+    })
+
+    expect(onRenderComplete).toHaveBeenCalled()
+    expect(container.querySelector('[data-slide-index="0"]')).not.toBeNull()
+
+    handle.destroy()
+    expect(container.innerHTML).toBe('')
+  })
+
+  it('uses windowed list rendering defaults for large decks', () => {
+    expect(SIM_PPTX_LIST_OPTIONS).toMatchObject({
+      windowed: true,
+      batchSize: 8,
+      initialSlides: 4,
+    })
+  })
+})