chore: import upstream snapshot with attribution

apps/sim/lib/pptx-renderer/parser/zip-parser.test.ts

@@ -0,0 +1,51 @@
+import JSZip from 'jszip'
+import { describe, expect, it } from 'vitest'
+import { parseZip } from '@/lib/pptx-renderer/parser/zip-parser'
+
+async function createZip(entries: Record<string, string | Uint8Array>): Promise<ArrayBuffer> {
+  const zip = new JSZip()
+  for (const [path, content] of Object.entries(entries)) {
+    zip.file(path, content)
+  }
+  return zip.generateAsync({ type: 'arraybuffer' })
+}
+
+describe('parseZip', () => {
+  it('extracts PPTX package parts into categorized maps', async () => {
+    const buffer = await createZip({
+      '[Content_Types].xml': '<Types />',
+      'ppt/presentation.xml': '<p:presentation />',
+      'ppt/_rels/presentation.xml.rels': '<Relationships />',
+      'ppt/slides/slide1.xml': '<p:sld />',
+      'ppt/slides/_rels/slide1.xml.rels': '<Relationships />',
+      'ppt/media/image1.png': new Uint8Array([1, 2, 3]),
+    })
+
+    const files = await parseZip(buffer)
+
+    expect(files.contentTypes).toBe('<Types />')
+    expect(files.presentation).toBe('<p:presentation />')
+    expect(files.slides.get('ppt/slides/slide1.xml')).toBe('<p:sld />')
+    expect(files.slideRels.get('ppt/slides/_rels/slide1.xml.rels')).toBe('<Relationships />')
+    expect(files.media.get('ppt/media/image1.png')).toEqual(new Uint8Array([1, 2, 3]))
+  })
+
+  it('rejects archives that exceed entry limits', async () => {
+    const buffer = await createZip({
+      '[Content_Types].xml': '<Types />',
+      'ppt/presentation.xml': '<p:presentation />',
+    })
+
+    await expect(parseZip(buffer, { maxEntries: 1 })).rejects.toThrow(
+      'PPTX zip limit exceeded: entries 2 > maxEntries 1'
+    )
+  })
+
+  it('rejects archives that exceed media byte limits', async () => {
+    const buffer = await createZip({
+      'ppt/media/image1.png': new Uint8Array([1, 2, 3, 4]),
+    })
+
+    await expect(parseZip(buffer, { maxMediaBytes: 3 })).rejects.toThrow('PPTX zip limit exceeded')
+  })
+})