Pete Miller
48bb69bd43
* Upgrade jest to 30.3.0 Remove use of https://github.com/brave/jest # Conflicts: # package-lock.json * more improvements that can be made with jest upgrade * format
44 lines
1.6 KiB
TypeScript
44 lines
1.6 KiB
TypeScript
// Copyright (c) 2021 The Brave Authors. All rights reserved.
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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import JSDOMEnvironment from 'jest-environment-jsdom'
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import assert from 'assert'
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export default class CustomEnvironment extends JSDOMEnvironment {
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async setup() {
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await super.setup()
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// Treat JSDOM errors as hard failures. These errors usually occur due to
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// unimplemented APIs, so it is better to detect those and explicitly mock.
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assert(this.dom.virtualConsole.listenerCount('jsdomError') === 1)
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this.dom.virtualConsole.removeAllListeners('jsdomError')
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// We're adding features missing in JSDOM. If assertions fail, JSDOM has
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// these features now and we can remove our additions.
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assert(this.global.TextEncoder === undefined)
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this.global.TextEncoder = TextEncoder
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assert(this.global.TextDecoder === undefined)
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this.global.TextDecoder = TextDecoder
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assert(this.global.matchMedia === undefined)
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this.global.matchMedia = (query) => ({
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matches: false,
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media: query,
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onchange: null,
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addListener: () => {},
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removeListener: () => {},
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addEventListener: () => {},
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removeEventListener: () => {},
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dispatchEvent: () => {}
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})
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// structuredClone is only available in jest-environment-node and not jsdom
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// https://github.com/jestjs/jest/pull/12631
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assert(this.global.structuredClone === undefined)
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this.global.structuredClone = structuredClone
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}
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}
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