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import React from "react";
import { fireEvent, render } from "@testing-library/react";
export default class Counter extends React.Component {
constructor(props) {
super(props);
this.state = {
count: 0
};
}
render() {
return (
<button onClick={() => this.setState({ count: this.state.count + 1 })}>
Count {this.state.count}
</button>
);
}
}
describe("sample counter test", function() {
it("mutliple counts", function() {
const { container } = render(<Counter />);
const button = container.getElementsByTagName("Button")[0];
fireEvent(
button,
new MouseEvent("click", {
bubbles: true,
cancelable: true
})
);
fireEvent(
button,
new MouseEvent("click", {
bubbles: true,
cancelable: true
})
);
expect(button.textContent).toEqual("Count 2");
});
});
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