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design-pipeline/tests/g01-background-candidates.test.mjs

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+import test from 'node:test'
+import assert from 'node:assert/strict'
+import { readFile } from 'node:fs/promises'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+const testDirectory = path.dirname(fileURLToPath(import.meta.url))
+const workspace = path.resolve(testDirectory, '..', '..')
+const manifestPath = path.join(workspace, 'design-pipeline', 'manifests', 'g01-background-candidates.json')
+const wrapperPath = path.join(workspace, 'design-pipeline', 'scripts', 'build-g01-backgrounds.mjs')
+
+test('G01 background candidate manifest preserves three portable masters', async () => {
+  const manifest = JSON.parse(await readFile(manifestPath, 'utf8'))
+  assert.equal(manifest.schemaVersion, 1)
+  assert.equal(manifest.page, 'G01')
+  assert.equal(manifest.status, 'candidates-pending-user-selection')
+  assert.equal(manifest.candidates.length, 3)
+
+  const ids = new Set()
+  for (const candidate of manifest.candidates) {
+    assert.ok(!ids.has(candidate.id), `duplicate candidate id: ${candidate.id}`)
+    ids.add(candidate.id)
+    assert.match(candidate.prompt, /1024x1536/)
+    assert.deepEqual(candidate.sourcePixels, { width: 1024, height: 1536 })
+    assert.ok(['chroma-key', 'opaque-paper'].includes(candidate.processingMode))
+
+    for (const key of ['master', 'generatedOutput']) {
+      const absolute = path.resolve(workspace, candidate[key])
+      const relative = path.relative(workspace, absolute)
+      assert.ok(!relative.startsWith('..') && !path.isAbsolute(relative), `${key} escapes workspace`)
+    }
+  }
+})
+
+test('G01 Node wrapper delegates pixel decoding to locked Pillow without Sharp', async () => {
+  const wrapper = await readFile(wrapperPath, 'utf8')
+  assert.doesNotMatch(wrapper, /from ['"]sharp['"]/)
+  assert.match(wrapper, /build_g01_backgrounds\.py/)
+})