2020-04-19 19:58:31 +02:00
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/* global jasmine */
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/* eslint-env jest */
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import { sandbox } from './helpers'
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jasmine.DEFAULT_TIMEOUT_INTERVAL = 1000 * 60 * 5
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test('basic: can edit a component without losing state', async () => {
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const [session, cleanup] = await sandbox()
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await session.patch(
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'index.js',
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`
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import { useCallback, useState } from 'react'
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export default function Index() {
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const [count, setCount] = useState(0)
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const increment = useCallback(() => setCount(c => c + 1), [setCount])
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return (
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<main>
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<p>{count}</p>
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<button onClick={increment}>Increment</button>
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</main>
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)
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}
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`
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)
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await session.evaluate(() => document.querySelector('button').click())
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('1')
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await session.patch(
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'index.js',
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`
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import { useCallback, useState } from 'react'
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export default function Index() {
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const [count, setCount] = useState(0)
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const increment = useCallback(() => setCount(c => c + 1), [setCount])
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return (
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<main>
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<p>Count: {count}</p>
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<button onClick={increment}>Increment</button>
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</main>
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)
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}
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`
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)
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('Count: 1')
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await session.evaluate(() => document.querySelector('button').click())
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('Count: 2')
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await cleanup()
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})
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2020-04-20 06:35:12 +02:00
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test('can recover from a syntax error without losing state', async () => {
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const [session, cleanup] = await sandbox()
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await session.patch(
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'index.js',
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`
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import { useCallback, useState } from 'react'
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export default function Index() {
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const [count, setCount] = useState(0)
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const increment = useCallback(() => setCount(c => c + 1), [setCount])
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return (
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<main>
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<p>{count}</p>
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<button onClick={increment}>Increment</button>
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</main>
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)
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}
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`
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)
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await session.evaluate(() => document.querySelector('button').click())
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('1')
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await session.patch('index.js', `export default () => <div/`)
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expect(await session.getOverlayContent()).toMatch('Failed to compile')
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await session.patch(
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'index.js',
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`
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import { useCallback, useState } from 'react'
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export default function Index() {
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const [count, setCount] = useState(0)
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const increment = useCallback(() => setCount(c => c + 1), [setCount])
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return (
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<main>
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<p>Count: {count}</p>
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<button onClick={increment}>Increment</button>
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</main>
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)
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}
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`
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)
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('Count: 1')
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await cleanup()
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})
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2020-04-24 17:21:18 +02:00
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test('cyclic dependencies', async () => {
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const [session, cleanup] = await sandbox()
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await session.write(
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'NudgeOverview.js',
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`
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import * as React from 'react';
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import { foo } from './routes';
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const NudgeOverview = () => {
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return <span />;
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foo;
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};
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export default NudgeOverview;
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`
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)
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await session.write(
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'SurveyOverview.js',
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`
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const SurveyOverview = () => {
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return 100;
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};
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export default SurveyOverview;
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`
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)
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await session.write(
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'Milestones.js',
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`
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import React from 'react';
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import { fragment } from './DashboardPage';
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const Milestones = props => {
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return <span />;
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fragment;
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};
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export default Milestones;
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`
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)
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await session.write(
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'DashboardPage.js',
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`
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import React from 'react';
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import Milestones from './Milestones';
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import SurveyOverview from './SurveyOverview';
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import NudgeOverview from './NudgeOverview';
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export const fragment = {};
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const DashboardPage = () => {
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return (
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<>
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<Milestones />
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<SurveyOverview />
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<NudgeOverview />
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</>
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);
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};
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export default DashboardPage;
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`
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)
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await session.write(
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'routes.js',
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`
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import DashboardPage from './DashboardPage';
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export const foo = {};
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console.warn('DashboardPage at import time:', DashboardPage);
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setTimeout(() => console.warn('DashboardPage after:', DashboardPage), 0);
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export default DashboardPage;
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`
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)
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await session.patch(
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'index.js',
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`
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import * as React from 'react';
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import DashboardPage from './routes';
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const HeroApp = (props) => {
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return <p>Hello. {DashboardPage ? <DashboardPage /> : null}</p>;
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};
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export default HeroApp;
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`
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)
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('Hello. 100')
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let didFullRefresh = !(await session.patch(
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'SurveyOverview.js',
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`
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const SurveyOverview = () => {
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return 200;
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};
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export default SurveyOverview;
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`
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))
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('Hello. 200')
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expect(didFullRefresh).toBe(false)
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didFullRefresh = !(await session.patch(
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'index.js',
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`
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import * as React from 'react';
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import DashboardPage from './routes';
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const HeroApp = (props) => {
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return <p>Hello: {DashboardPage ? <DashboardPage /> : null}</p>;
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};
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export default HeroApp;
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`
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))
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('Hello: 200')
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expect(didFullRefresh).toBe(false)
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didFullRefresh = !(await session.patch(
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'SurveyOverview.js',
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`
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const SurveyOverview = () => {
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return 300;
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};
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export default SurveyOverview;
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`
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))
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('Hello: 300')
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expect(didFullRefresh).toBe(false)
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await cleanup()
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})
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2020-04-30 16:50:25 +02:00
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2020-04-30 19:13:40 +02:00
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test('logbox: can recover from a event handler error', async () => {
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2020-04-30 16:50:25 +02:00
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const [session, cleanup] = await sandbox()
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await session.patch(
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'index.js',
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`
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import { useCallback, useState } from 'react'
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export default function Index() {
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const [count, setCount] = useState(0)
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const increment = useCallback(() => {
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setCount(c => c + 1)
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throw new Error('oops')
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}, [setCount])
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return (
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<main>
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<p>{count}</p>
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<button onClick={increment}>Increment</button>
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</main>
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)
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}
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`
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)
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('0')
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await session.evaluate(() => document.querySelector('button').click())
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('1')
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expect(await session.hasRedbox(true)).toBe(true)
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expect(await session.getRedboxSource()).toMatchInlineSnapshot(`
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"index.js (8:16) @ eval
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6 | const increment = useCallback(() => {
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7 | setCount(c => c + 1)
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> 8 | throw new Error('oops')
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| ^
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9 | }, [setCount])
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10 | return (
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11 | <main>"
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`)
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await session.patch(
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'index.js',
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`
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import { useCallback, useState } from 'react'
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export default function Index() {
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const [count, setCount] = useState(0)
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const increment = useCallback(() => setCount(c => c + 1), [setCount])
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return (
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<main>
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<p>Count: {count}</p>
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<button onClick={increment}>Increment</button>
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</main>
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)
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}
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`
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)
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expect(await session.hasRedbox()).toBe(false)
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('Count: 1')
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await session.evaluate(() => document.querySelector('button').click())
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('Count: 2')
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expect(await session.hasRedbox()).toBe(false)
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await cleanup()
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})
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2020-04-30 19:13:40 +02:00
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test('logbox: can recover from a component error', async () => {
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2020-04-30 16:50:25 +02:00
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const [session, cleanup] = await sandbox()
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await session.write(
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'child.js',
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`
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export default function Child() {
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return <p>Hello</p>;
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}
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`
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)
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await session.patch(
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'index.js',
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`
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import Child from './child'
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export default function Index() {
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return (
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<main>
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<Child />
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</main>
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)
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}
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`
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)
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('Hello')
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await session.patch(
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'child.js',
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`
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// hello
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export default function Child() {
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throw new Error('oops')
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}
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`
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)
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expect(await session.hasRedbox(true)).toBe(true)
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expect(await session.getRedboxSource()).toMatchInlineSnapshot(`
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"child.js (4:14) @ Child
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2 | // hello
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3 | export default function Child() {
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> 4 | throw new Error('oops')
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| ^
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5 | }
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6 | "
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`)
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const didNotReload = await session.patch(
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'child.js',
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`
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export default function Child() {
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return <p>Hello</p>;
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}
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`
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)
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expect(didNotReload).toBe(true)
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expect(await session.hasRedbox()).toBe(false)
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expect(
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await session.evaluate(() => document.querySelector('p').textContent)
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).toBe('Hello')
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await cleanup()
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})
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