Use timers instead of act to force fallbacks to show

facebook · Dec 1, 2020 · 9fb5014 · 9fb5014
1 parent 76d4a7d
commit 9fb5014
Showing 1 changed file with 3 additions and 4 deletions.
diff --git a/packages/react-reconciler/src/__tests__/ReactLazy-test.internal.js b/packages/react-reconciler/src/__tests__/ReactLazy-test.internal.js
@@ -1344,10 +1344,9 @@ describe('ReactLazy', () => {
  expect(root).toMatchRenderedOutput('AB');
 
  // Swap the position of A and B
- ReactTestRenderer.act(() => {
- root.update(<Parent swap={true} />);
- expect(Scheduler).toFlushAndYield(['Init B2', 'Loading...']);
- });
+ root.update(<Parent swap={true} />);
+ expect(Scheduler).toFlushAndYield(['Init B2', 'Loading...']);
+ jest.runAllTimers();
 
  // The suspense boundary should've triggered now.
  expect(root).toMatchRenderedOutput('Loading...');