fix anchor test fails a lot again

components/anchor/__tests__/Anchor.test.js

@@ -62,11 +62,11 @@ describe('Anchor Render', () => {
     wrapper.instance().handleScrollTo('##API');
     expect(wrapper.instance().state.activeLink).toBe('##API');
     expect(scrollToSpy).not.toHaveBeenCalled();
-    await new Promise(resolve => setTimeout(resolve, 50));
-    expect(scrollToSpy).toHaveBeenCalled();
+    await new Promise(resolve => setTimeout(resolve, 100));
     expect(wrapper.instance().animating).toBe(true);
     await new Promise(resolve => setTimeout(resolve, 1000));
     expect(wrapper.instance().animating).toBe(false);
+    expect(scrollToSpy).toHaveBeenCalled();
   });
 
   it('should remove listener when unmount', async () => {