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import {
vnodeSpy,
rootSpy,
beforeDiffSpy,
hookSpy,
afterDiffSpy,
catchErrorSpy
} from '../../../test/_util/optionSpies';
import { createElement, render, Component } from 'preact';
import { useState } from 'preact/hooks';
import { setupRerender } from 'preact/test-utils';
import 'preact/debug';
import { setupScratch, teardown } from '../../../test/_util/helpers';
/** @jsx createElement */
describe('debug options', () => {
/** @type {HTMLDivElement} */
let scratch;
/** @type {() => void} */
let rerender;
/** @type {(count: number) => void} */
let setCount;
beforeEach(() => {
scratch = setupScratch();
rerender = setupRerender();
vnodeSpy.resetHistory();
rootSpy.resetHistory();
beforeDiffSpy.resetHistory();
hookSpy.resetHistory();
afterDiffSpy.resetHistory();
catchErrorSpy.resetHistory();
});
afterEach(() => {
teardown(scratch);
});
class ClassApp extends Component {
constructor() {
super();
this.state = { count: 0 };
setCount = count => this.setState({ count });
}
render() {
return <div>{this.state.count}</div>;
}
}
it('should call old options on mount', () => {
render(<ClassApp />, scratch);
expect(vnodeSpy).to.have.been.called;
expect(rootSpy).to.have.been.called;
expect(beforeDiffSpy).to.have.been.called;
expect(afterDiffSpy).to.have.been.called;
});
it('should call old options on update', () => {
render(<ClassApp />, scratch);
setCount(1);
rerender();
expect(vnodeSpy).to.have.been.called;
expect(rootSpy).to.have.been.called;
expect(beforeDiffSpy).to.have.been.called;
expect(afterDiffSpy).to.have.been.called;
});
it('should call old options on unmount', () => {
render(<ClassApp />, scratch);
render(null, scratch);
expect(vnodeSpy).to.have.been.called;
expect(rootSpy).to.have.been.called;
expect(beforeDiffSpy).to.have.been.called;
expect(afterDiffSpy).to.have.been.called;
});
it('should call old hook options for hook components', () => {
function HookApp() {
const [count, realSetCount] = useState(0);
setCount = realSetCount;
return <div>{count}</div>;
}
render(<HookApp />, scratch);
expect(hookSpy).to.have.been.called;
});
it('should call old options on error', () => {
const e = new Error('test');
class ErrorApp extends Component {
constructor() {
super();
this.state = { error: true };
}
componentDidCatch() {
this.setState({ error: false });
}
render() {
return <Throw error={this.state.error} />;
}
}
function Throw({ error }) {
if (error) {
throw e;
} else {
return <div>no error</div>;
}
}
const clock = sinon.useFakeTimers();
render(<ErrorApp />, scratch);
rerender();
expect(catchErrorSpy).to.have.been.called;
// we expect to throw after setTimeout to trigger a window.onerror
// this is to ensure react compat (i.e. with next.js' dev overlay)
expect(() => clock.tick(0)).to.throw(e);
clock.restore();
});
});
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