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Convert SyntheticWheelEvent-test.js to createRoot #28103

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merged 3 commits into from
Jan 26, 2024
Merged

Convert SyntheticWheelEvent-test.js to createRoot #28103

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4b1e8ba
Migrate SyntheticWheelEvent-test.js from ReactDOM.render to createRoot
mattcarrollcode Jan 26, 2024
7c1b083
Add expected number of assertions
mattcarrollcode Jan 26, 2024
5970396
Fix lint issue
mattcarrollcode Jan 26, 2024
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27 changes: 19 additions & 8 deletions packages/react-dom/src/events/__tests__/SyntheticWheelEvent-test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -10,32 +10,38 @@
'use strict';

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

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

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

// The container has to be attached for events to fire.
container = document.createElement('div');
document.body.appendChild(container);
root = ReactDOMClient.createRoot(container);
});

afterEach(() => {
document.body.removeChild(container);
container = null;
});

it('should normalize properties from the MouseEvent interface', () => {
it('should normalize properties from the MouseEvent interface', async () => {
const events = [];
const onWheel = event => {
event.persist();
events.push(event);
};
ReactDOM.render(<div onWheel={onWheel} />, container);
await act(async () => {
root.render(<div onWheel={onWheel} />);
});

container.firstChild.dispatchEvent(
new MouseEvent('wheel', {
Expand All @@ -48,13 +54,16 @@ describe('SyntheticWheelEvent', () => {
expect(events[0].button).toBe(1);
});

it('should normalize properties from the WheelEvent interface', () => {
it('should normalize properties from the WheelEvent interface', async () => {
const events = [];
const onWheel = event => {
event.persist();
events.push(event);
};
ReactDOM.render(<div onWheel={onWheel} />, container);

await act(async () => {
root.render(<div onWheel={onWheel} />);
});

let event = new MouseEvent('wheel', {
bubbles: true,
Expand Down Expand Up @@ -83,7 +92,7 @@ describe('SyntheticWheelEvent', () => {
expect(events[1].deltaY).toBe(-50);
});

it('should be able to `preventDefault` and `stopPropagation`', () => {
it('should be able to `preventDefault` and `stopPropagation`', async () => {
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Can add an expect.assertions(3) to the end of this test

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Shouldn't the expected number of assertions be 5? 2x for each dispatchEvent call (4 total) and one expect events to be "2".

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Yeah I counted wrong

const events = [];
const onWheel = event => {
expect(event.isDefaultPrevented()).toBe(false);
Expand All @@ -92,7 +101,9 @@ describe('SyntheticWheelEvent', () => {
event.persist();
events.push(event);
};
ReactDOM.render(<div onWheel={onWheel} />, container);
await act(async () => {
root.render(<div onWheel={onWheel} />);
});

container.firstChild.dispatchEvent(
new MouseEvent('wheel', {
Expand Down