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32 changes: 24 additions & 8 deletions packages/react-dom/src/events/__tests__/SyntheticEvent-test.js
Original file line number Diff line number Diff line change
Expand Up @@ -10,16 +10,20 @@
'use strict';

let React;
let ReactDOM;
let ReactDOMClient;
let act;

describe('SyntheticEvent', () => {
let container;
let root;

beforeEach(() => {
React = require('react');
ReactDOM = require('react-dom');
ReactDOMClient = require('react-dom/client');
act = require('internal-test-utils').act;

container = document.createElement('div');
root = ReactDOMClient.createRoot(container);
document.body.appendChild(container);
});

Expand All @@ -28,7 +32,7 @@ describe('SyntheticEvent', () => {
container = null;
});

it('should be able to `preventDefault`', () => {
it('should be able to `preventDefault`', async () => {
let expectedCount = 0;

const eventHandler = syntheticEvent => {
Expand All @@ -39,7 +43,11 @@ describe('SyntheticEvent', () => {

expectedCount++;
};
const node = ReactDOM.render(<div onClick={eventHandler} />, container);
const nodeRef = React.createRef();
await act(async () => {
root.render(<div onClick={eventHandler} ref={nodeRef} />);
});
const node = nodeRef.current;

const event = document.createEvent('Event');
event.initEvent('click', true, true);
Expand All @@ -48,15 +56,19 @@ describe('SyntheticEvent', () => {
expect(expectedCount).toBe(1);
});

it('should be prevented if nativeEvent is prevented', () => {
it('should be prevented if nativeEvent is prevented', async () => {
let expectedCount = 0;

const eventHandler = syntheticEvent => {
expect(syntheticEvent.isDefaultPrevented()).toBe(true);

expectedCount++;
};
const node = ReactDOM.render(<div onClick={eventHandler} />, container);
const nodeRef = React.createRef();
await act(async () => {
root.render(<div onClick={eventHandler} ref={nodeRef} />);
});
const node = nodeRef.current;

let event;
event = document.createEvent('Event');
Expand All @@ -80,7 +92,7 @@ describe('SyntheticEvent', () => {
expect(expectedCount).toBe(2);
});

it('should be able to `stopPropagation`', () => {
it('should be able to `stopPropagation`', async () => {
let expectedCount = 0;

const eventHandler = syntheticEvent => {
Expand All @@ -90,7 +102,11 @@ describe('SyntheticEvent', () => {

expectedCount++;
};
const node = ReactDOM.render(<div onClick={eventHandler} />, container);
const nodeRef = React.createRef();
await act(async () => {
root.render(<div onClick={eventHandler} ref={nodeRef} />);
});
const node = nodeRef.current;

const event = document.createEvent('Event');
event.initEvent('click', true, true);
Expand Down