feat(web): IDB persistence + capability detection for FileSystemFileHandle

2026-04-30 02:03:01 +02:00
parent 097976538d
commit 054f063f1f
2 changed files with 120 additions and 0 deletions
@@ -0,0 +1,44 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import 'fake-indexeddb/auto';
+import { putHandle, getHandle, deleteHandle, clearAllHandles, supportsFsHandles, supportsDnDHandles } from './idbHandles';
+
+describe('idbHandles', () => {
+  beforeEach(async () => { await clearAllHandles(); });
+
+  it('round-trips a structured-cloneable handle stand-in', async () => {
+    const fakeHandle = { kind: 'file', name: 'photo.png' } as unknown as FileSystemHandle;
+    await putHandle('t-1', fakeHandle);
+    const read = await getHandle('t-1');
+    expect(read).toEqual(fakeHandle);
+  });
+
+  it('returns undefined for missing key', async () => {
+    expect(await getHandle('t-missing')).toBeUndefined();
+  });
+
+  it('deletes a stored handle', async () => {
+    await putHandle('t-2', { kind: 'file' } as unknown as FileSystemHandle);
+    await deleteHandle('t-2');
+    expect(await getHandle('t-2')).toBeUndefined();
+  });
+
+  it('deleteHandle on a missing key is a no-op (no throw)', async () => {
+    await expect(deleteHandle('t-never')).resolves.toBeUndefined();
+  });
+
+  it('clearAllHandles empties the store', async () => {
+    await putHandle('t-3', { kind: 'file' } as unknown as FileSystemHandle);
+    await putHandle('t-4', { kind: 'file' } as unknown as FileSystemHandle);
+    await clearAllHandles();
+    expect(await getHandle('t-3')).toBeUndefined();
+    expect(await getHandle('t-4')).toBeUndefined();
+  });
+
+  it('supportsFsHandles returns a boolean', () => {
+    expect(typeof supportsFsHandles()).toBe('boolean');
+  });
+
+  it('supportsDnDHandles returns a boolean', () => {
+    expect(typeof supportsDnDHandles()).toBe('boolean');
+  });
+});