chore: establish learning module baseline

OpenMAIC/tests/video-export/quiz-layout.test.ts

@@ -0,0 +1,76 @@
+import { describe, expect, it, vi } from 'vitest';
+import type { CompilerScene, QuizLayoutMeasurement } from '@/lib/video-export';
+import { createQuizLayoutProbe } from '@/lib/video-export-app/quiz-layout';
+import { getVideoExportCoverLabels } from '@/lib/video-export-app/cover-config';
+
+function quiz(id: string, questions: readonly unknown[]): CompilerScene {
+  return {
+    id,
+    stageId: 'stage',
+    title: id,
+    order: 0,
+    type: 'quiz',
+    content: { type: 'quiz', questions },
+    actions: [],
+  } as CompilerScene;
+}
+
+describe('app-side Quiz layout probe', () => {
+  it('premeasures non-empty Quiz scenes at the target frame and exposes sync lookups', async () => {
+    const measurement: QuizLayoutMeasurement = {
+      contentHeightPx: 900,
+      viewportHeightPx: 500,
+      frameHeightPx: 1080,
+    };
+    const measure = vi.fn().mockResolvedValue(measurement);
+    const nonEmpty = quiz('non-empty', [{ id: 'q', type: 'single', question: 'Q' }]);
+    const empty = quiz('empty', []);
+    const nonQuiz = {
+      ...quiz('slide', []),
+      type: 'slide',
+      content: { type: 'slide', canvas: { elements: [] } },
+    } as CompilerScene;
+    const probe = await createQuizLayoutProbe(
+      {
+        scenes: [nonEmpty, empty, nonQuiz],
+        width: 1920,
+        height: 1080,
+        locale: 'en-US',
+        labels: getVideoExportCoverLabels('en-US'),
+      },
+      measure,
+    );
+
+    expect(measure).toHaveBeenCalledTimes(1);
+    expect(measure).toHaveBeenCalledWith(
+      expect.objectContaining({
+        content: {
+          title: 'non-empty',
+          questions: [{ id: 'q', type: 'single', question: 'Q', options: [] }],
+        },
+        width: 1920,
+        height: 1080,
+        locale: 'en-US',
+      }),
+    );
+    expect(probe.measureQuestionList(nonEmpty)).toEqual(measurement);
+    expect(probe.measureQuestionList(empty)).toBeNull();
+    expect(probe.measureQuestionList(nonQuiz)).toBeNull();
+  });
+
+  it('turns measurement rejection into a null lookup for compiler fallback', async () => {
+    const source = quiz('failed', [{ id: 'q', type: 'short_answer', question: 'Q' }]);
+    const probe = await createQuizLayoutProbe(
+      {
+        scenes: [source],
+        width: 1280,
+        height: 720,
+        locale: 'zh-CN',
+        labels: getVideoExportCoverLabels('zh-CN'),
+      },
+      vi.fn().mockRejectedValue(new Error('font timeout')),
+    );
+
+    expect(probe.measureQuestionList(source)).toBeNull();
+  });
+});