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metamask-extension/test/helpers/setup-helper.js

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JavaScript
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import nock from 'nock';
import Enzyme from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';
import log from 'loglevel';
import { JSDOM } from 'jsdom';
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process.env.IN_TEST = true;
global.chrome = {
runtime: { id: 'testid', getManifest: () => ({ manifest_version: 2 }) },
};
nock.disableNetConnect();
nock.enableNetConnect('localhost');
// catch rejections that are still unhandled when tests exit
const unhandledRejections = new Map();
process.on('unhandledRejection', (reason, promise) => {
console.log('Unhandled rejection:', reason);
unhandledRejections.set(promise, reason);
});
process.on('rejectionHandled', (promise) => {
console.log(`handled: ${unhandledRejections.get(promise)}`);
unhandledRejections.delete(promise);
});
process.on('exit', () => {
if (unhandledRejections.size > 0) {
console.error(`Found ${unhandledRejections.size} unhandled rejections:`);
for (const reason of unhandledRejections.values()) {
console.error('Unhandled rejection: ', reason);
}
process.exit(1);
}
});
Enzyme.configure({ adapter: new Adapter() });
log.setDefaultLevel(5);
global.log = log;
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//
// polyfills
//
// dom
const jsdom = new JSDOM();
global.window = jsdom.window;
// required by `trezor-connect/node_modules/whatwg-fetch`
global.self = window;
// required by `dom-helpers` and various other libraries
global.document = window.document;
// required by `react-tippy`
global.navigator = window.navigator;
global.Element = window.Element;
// required by `react-popper`
global.HTMLElement = window.HTMLElement;
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// Jest no longer adds the following timers so we use set/clear Timeouts
global.setImmediate =
global.setImmediate || ((fn, ...args) => global.setTimeout(fn, 0, ...args));
global.clearImmediate =
global.clearImmediate || ((id) => global.clearTimeout(id));
// required by any components anchored on `popover-content`
const popoverContent = window.document.createElement('div');
popoverContent.setAttribute('id', 'popover-content');
window.document.body.appendChild(popoverContent);
// fetch
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// fetch is part of node js in future versions, thus triggering no-shadow
// eslint-disable-next-line no-shadow
const fetch = require('node-fetch');
const { Headers, Request, Response } = fetch;
Object.assign(window, { fetch, Headers, Request, Response });
// localStorage
window.localStorage = {
removeItem: () => null,
};
// used for native dark/light mode detection
window.matchMedia = () => true;
// override @metamask/logo
window.requestAnimationFrame = () => undefined;
// crypto.getRandomValues
if (!window.crypto) {
window.crypto = {};
}
if (!window.crypto.getRandomValues) {
// eslint-disable-next-line node/global-require
window.crypto.getRandomValues = require('polyfill-crypto.getrandomvalues');
}
// Used to test `clearClipboard` function
if (!window.navigator.clipboard) {
window.navigator.clipboard = {};
}
if (!window.navigator.clipboard.writeText) {
window.navigator.clipboard.writeText = () => undefined;
}