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tests/step-reorder.test.ts

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+import 'fake-indexeddb/auto';
+import { beforeEach, describe, it, expect } from 'vitest';
+import { db } from '../src/shared/db-schema';
+import { reorderSteps } from '../src/shared/guide-service';
+import type { Guide, Step } from '../src/shared/types';
+
+async function seedGuide(id: string, stepIds: string[]): Promise<Guide> {
+  const guide: Guide = {
+    id,
+    title: 'Test Guide',
+    createdAt: Date.now(),
+    updatedAt: Date.now(),
+    stepIds,
+  };
+  await db.guides.add(guide);
+  return guide;
+}
+
+async function seedStep(id: string, guideId: string, index: number): Promise<Step> {
+  const step: Step = {
+    id,
+    guideId,
+    index,
+    description: `Step ${index}`,
+    action: 'click',
+    url: 'https://example.com',
+    timestamp: Date.now(),
+  };
+  await db.steps.add(step);
+  return step;
+}
+
+beforeEach(async () => {
+  await db.guides.clear();
+  await db.steps.clear();
+  await db.screenshots.clear();
+});
+
+describe('reorderSteps', () => {
+  it('updates step index values to match new order', async () => {
+    await seedGuide('g1', ['s0', 's1', 's2']);
+    await seedStep('s0', 'g1', 0);
+    await seedStep('s1', 'g1', 1);
+    await seedStep('s2', 'g1', 2);
+
+    await reorderSteps('g1', ['s2', 's0', 's1']);
+
+    const s2 = await db.steps.get('s2');
+    const s0 = await db.steps.get('s0');
+    const s1 = await db.steps.get('s1');
+
+    expect(s2!.index).toBe(0);
+    expect(s0!.index).toBe(1);
+    expect(s1!.index).toBe(2);
+  });
+
+  it('updates guide.stepIds to match new order', async () => {
+    await seedGuide('g1', ['s0', 's1', 's2']);
+    await seedStep('s0', 'g1', 0);
+    await seedStep('s1', 'g1', 1);
+    await seedStep('s2', 'g1', 2);
+
+    await reorderSteps('g1', ['s2', 's0', 's1']);
+
+    const guide = await db.guides.get('g1');
+    expect(guide!.stepIds).toEqual(['s2', 's0', 's1']);
+  });
+
+  it('updates guide.updatedAt after reorder', async () => {
+    const before = Date.now();
+    await seedGuide('g1', ['s0', 's1']);
+    await seedStep('s0', 'g1', 0);
+    await seedStep('s1', 'g1', 1);
+
+    await reorderSteps('g1', ['s1', 's0']);
+
+    const guide = await db.guides.get('g1');
+    expect(guide!.updatedAt).toBeGreaterThanOrEqual(before);
+  });
+});