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act-dom.html
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act-dom.html
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<!DOCTYPE html>
<html>
<head>
<title>sanity test for ReactTestUtils.act</title>
</head>
<body>
this page tests whether act runs properly in a browser.
<br />
your console should say "5"
<div id='app'/>
<script src="scheduler-unstable_mock.development.js"></script>
<script src="react.development.js"></script>
<script type="text/javascript">
window.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler =
window.SchedulerMock;
</script>
<script src="react-dom.development.js"></script>
<script src="react-dom-test-utils.development.js"></script>
<script>
// from ReactTestUtilsAct-test.js
function App() {
let [state, setState] = React.useState(0);
async function ticker() {
await null;
setState(x => x + 1);
}
React.useEffect(() => {
ticker();
}, [Math.min(state, 4)]);
return state;
}
async function testAsyncAct() {
const el = document.createElement("div");
await ReactTestUtils.act(async () => {
ReactDOM.render(React.createElement(App), el);
});
// all 5 ticks present and accounted for
console.log(el.innerHTML);
}
testAsyncAct();
</script>
</body>
</html>