diff --git a/projetos/@pulse-libs/core/tests/hooks.test.ts b/projetos/@pulse-libs/core/tests/hooks.test.ts
index 04a3e07..ecfa203 100644
--- a/projetos/@pulse-libs/core/tests/hooks.test.ts
+++ b/projetos/@pulse-libs/core/tests/hooks.test.ts
@@ -187,19 +187,21 @@ describe('useInterval', () => {
 
 // ════════════════════════════════════════════
 describe('useClipboard', () => {
+  beforeEach(() => { (global.navigator.clipboard.writeText as any).mockResolvedValue(undefined); });
+
   it('inicia copied=false', () => {
     const { result } = renderHook(() => useClipboard(2000));
     expect(result.current.copied).toBe(false);
   });
   it('copia texto com sucesso', async () => {
-    const { result } = renderHook(() => useClipboard(0));
+    const { result } = renderHook(() => useClipboard(5000));
     const ok = await act(() => result.current.copy('hello'));
     expect(ok).toBe(true);
     expect(result.current.copied).toBe(true);
   });
   it('retorna false em erro', async () => {
     (global.navigator.clipboard.writeText as any).mockRejectedValue(new Error('denied'));
-    const { result } = renderHook(() => useClipboard(0));
+    const { result } = renderHook(() => useClipboard(5000));
     const ok = await act(() => result.current.copy('falha'));
     expect(ok).toBe(false);
   });