Add comment to explain the unit test

facebook · Oct 31, 2022 · 3e65e5a · 3e65e5a
1 parent 8eee696
commit 3e65e5a
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/packages/react-reconciler/src/__tests__/ReactOffscreen-test.js b/packages/react-reconciler/src/__tests__/ReactOffscreen-test.js
@@ -270,6 +270,9 @@ describe('ReactOffscreen', () => {
 
   // @gate enableOffscreen
   it('nested offscreen does not call componentWillUnmount when hidden', async () => {
+    // This is a bug that appeared during production test of <unstable_Offscreen />.
+    // It is a very specific scenario with nested Offscreens. The inner offscreen
+    // goes from visible to hidden in synchronous update.
     class ClassComponent extends React.Component {
       render () {
         return <Text text="Child" />;