forked from M3-Academy/challenge-algorithms-v2.0
199 lines
5.6 KiB
JavaScript
199 lines
5.6 KiB
JavaScript
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'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true
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});
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exports.default = exports.TestEnvironment = void 0;
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function _vm() {
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const data = require('vm');
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_vm = function () {
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return data;
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};
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return data;
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}
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function _fakeTimers() {
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const data = require('@jest/fake-timers');
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_fakeTimers = function () {
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return data;
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};
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return data;
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}
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function _jestMock() {
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const data = require('jest-mock');
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_jestMock = function () {
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return data;
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};
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return data;
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}
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function _jestUtil() {
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const data = require('jest-util');
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_jestUtil = function () {
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return data;
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};
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return data;
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}
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/**
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* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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// some globals we do not want, either because deprecated or we set it ourselves
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const denyList = new Set([
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'GLOBAL',
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'root',
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'global',
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'Buffer',
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'ArrayBuffer',
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'Uint8Array',
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// if env is loaded within a jest test
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'jest-symbol-do-not-touch'
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]);
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const nodeGlobals = new Map(
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Object.getOwnPropertyNames(globalThis)
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.filter(global => !denyList.has(global))
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.map(nodeGlobalsKey => {
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const descriptor = Object.getOwnPropertyDescriptor(
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globalThis,
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nodeGlobalsKey
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);
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if (!descriptor) {
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throw new Error(
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`No property descriptor for ${nodeGlobalsKey}, this is a bug in Jest.`
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);
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}
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return [nodeGlobalsKey, descriptor];
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})
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);
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function isString(value) {
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return typeof value === 'string';
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}
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class NodeEnvironment {
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context;
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fakeTimers;
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fakeTimersModern;
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global;
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moduleMocker;
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customExportConditions = ['node', 'node-addons'];
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// while `context` is unused, it should always be passed
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constructor(config, _context) {
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const {projectConfig} = config;
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this.context = (0, _vm().createContext)();
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const global = (0, _vm().runInContext)(
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'this',
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Object.assign(this.context, projectConfig.testEnvironmentOptions)
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);
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this.global = global;
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const contextGlobals = new Set(Object.getOwnPropertyNames(global));
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for (const [nodeGlobalsKey, descriptor] of nodeGlobals) {
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if (!contextGlobals.has(nodeGlobalsKey)) {
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Object.defineProperty(global, nodeGlobalsKey, {
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configurable: descriptor.configurable,
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enumerable: descriptor.enumerable,
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get() {
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// @ts-expect-error: no index signature
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const val = globalThis[nodeGlobalsKey];
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// override lazy getter
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Object.defineProperty(global, nodeGlobalsKey, {
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configurable: descriptor.configurable,
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enumerable: descriptor.enumerable,
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value: val,
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writable:
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descriptor.writable === true ||
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// Node 19 makes performance non-readable. This is probably not the correct solution.
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nodeGlobalsKey === 'performance'
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});
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return val;
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},
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set(val) {
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// override lazy getter
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Object.defineProperty(global, nodeGlobalsKey, {
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configurable: descriptor.configurable,
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enumerable: descriptor.enumerable,
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value: val,
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writable: true
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});
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}
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});
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}
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}
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// @ts-expect-error - Buffer and gc is "missing"
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global.global = global;
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global.Buffer = Buffer;
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global.ArrayBuffer = ArrayBuffer;
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// TextEncoder (global or via 'util') references a Uint8Array constructor
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// different than the global one used by users in tests. This makes sure the
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// same constructor is referenced by both.
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global.Uint8Array = Uint8Array;
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(0, _jestUtil().installCommonGlobals)(global, projectConfig.globals);
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// Node's error-message stack size is limited at 10, but it's pretty useful
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// to see more than that when a test fails.
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global.Error.stackTraceLimit = 100;
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if ('customExportConditions' in projectConfig.testEnvironmentOptions) {
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const {customExportConditions} = projectConfig.testEnvironmentOptions;
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if (
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Array.isArray(customExportConditions) &&
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customExportConditions.every(isString)
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) {
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this.customExportConditions = customExportConditions;
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} else {
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throw new Error(
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'Custom export conditions specified but they are not an array of strings'
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);
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}
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}
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this.moduleMocker = new (_jestMock().ModuleMocker)(global);
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const timerIdToRef = id => ({
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id,
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ref() {
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return this;
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},
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unref() {
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return this;
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}
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});
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const timerRefToId = timer => timer?.id;
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this.fakeTimers = new (_fakeTimers().LegacyFakeTimers)({
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config: projectConfig,
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global,
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moduleMocker: this.moduleMocker,
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timerConfig: {
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idToRef: timerIdToRef,
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refToId: timerRefToId
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}
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});
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this.fakeTimersModern = new (_fakeTimers().ModernFakeTimers)({
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config: projectConfig,
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global
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});
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}
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// eslint-disable-next-line @typescript-eslint/no-empty-function
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async setup() {}
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async teardown() {
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if (this.fakeTimers) {
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this.fakeTimers.dispose();
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}
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if (this.fakeTimersModern) {
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this.fakeTimersModern.dispose();
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}
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this.context = null;
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this.fakeTimers = null;
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this.fakeTimersModern = null;
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}
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exportConditions() {
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return this.customExportConditions;
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}
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getVmContext() {
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return this.context;
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}
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}
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exports.default = NodeEnvironment;
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const TestEnvironment = NodeEnvironment;
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exports.TestEnvironment = TestEnvironment;
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