From b44fe4deee505382698a98d2573691303b0159c3 Mon Sep 17 00:00:00 2001
From: Krzysztof Magiera <krzys@swmansion.com>
Date: Mon, 23 Jan 2023 09:53:01 -0800
Subject: [PATCH] Provide timestamp as argument to rAF callbacks when running
 Jest tests (#35919)
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Summary:
This change aligns requestAnimationFrame implementation used in Jest environment with web standard, and with the implementation that runs in the application environment.

As per specification https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame#parameters – requestAnimationFrame callback gets a single parameter, which represents the current frame timestamp. The current polyfill maps requestAnimationFrame directly to setTimeout which makes the callback execute without any parameters.

## Changelog

[General] [Fixed] - Jest mocked requestAnimationFrame callbacks now receive a timestamp parameter

Pull Request resolved: https://github.com/facebook/react-native/pull/35919

Test Plan:
1. execute jest test suite to make sure nothing breaks
2. add the below code to one of the tests:
```
jest.useFakeTimers();
requestAnimationFrame((timestamp) => console.log("rAF", timestamp));
jest.runOnlyPendingTimers();
jest.useRealTimers();
```
this code will print `undefined` before and numer `0` representing the mocked frame time after this change.

Reviewed By: jacdebug

Differential Revision: D42676544

Pulled By: robhogan

fbshipit-source-id: 363dc506ccc4bd034408fbb35ad3151875a8d309
---
 jest/setup.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/jest/setup.js b/jest/setup.js
index 3112707451595c..71f49e6892f230 100644
--- a/jest/setup.js
+++ b/jest/setup.js
@@ -25,7 +25,7 @@ global.regeneratorRuntime = jest.requireActual('regenerator-runtime/runtime');
 global.window = global;
 
 global.requestAnimationFrame = function (callback) {
-  return setTimeout(callback, 0);
+  return setTimeout(() => callback(jest.now()), 0);
 };
 global.cancelAnimationFrame = function (id) {
   clearTimeout(id);