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test(sounds): use realm-safe Uint8Array check (TextEncoder vs jsdom)

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vitest+jsdom puts test code in a different realm than Node's TextEncoder,
so `toBeInstanceOf(Uint8Array)` rejects the encoder's return value even
though it is structurally a Uint8Array. `Object.prototype.toString.call`
checks the @@toStringTag tag, which is realm-safe.
This commit is contained in:
Jannis Braun
2026-04-28 14:25:25 +02:00
parent dacb6df871
commit 00daa14dcd
1 changed files with 3 additions and 3 deletions
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packages/web/src/utils/streamWatchProtocol.test.ts
+3 -3
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@@ -9,9 +9,9 @@ describe('streamWatchProtocol', () => {
it('round-trips an encoded payload', () => { it('round-trips an encoded payload', () => {
const payload = { type: 'stream_watch' as const, target: 'user-1', watching: true }; const payload = { type: 'stream_watch' as const, target: 'user-1', watching: true };
const encoded = encodeStreamWatch(payload); const encoded = encodeStreamWatch(payload);
// Verify contract: TextEncoder.encode always returns Uint8Array with buffer + byteLength // Realm-safe Uint8Array check — TextEncoder returns a Uint8Array from Node's
expect(encoded.buffer).toBeDefined(); // realm, which `toBeInstanceOf(Uint8Array)` rejects under vitest+jsdom.
expect(encoded.byteLength).toBeGreaterThan(0); expect(Object.prototype.toString.call(encoded)).toBe('[object Uint8Array]');
const parsed = parseStreamWatch(encoded); const parsed = parseStreamWatch(encoded);
expect(parsed).toEqual(payload); expect(parsed).toEqual(payload);
}); });