How to use restoreGlobals method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

main.spec.ts

Source:main.spec.ts Github

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2describe('assertNoPoisoning', () => {3 it('should not throw any Error if no poisoning occurred', () => {4 // Arrange / Act / Assert5 expect(() => assertNoPoisoning()).not.toThrow();6 restoreGlobals();7 expect(() => assertNoPoisoning()).not.toThrow();8 });9 it('should throw an Error if new global appeared and be able to revert the change', () => {10 // Arrange11 // eslint-disable-next-line @typescript-eslint/ban-ts-comment12 // @ts-ignore13 globalThis.a = 'Hello';14 // Act / Assert15 try {16 expect(() => assertNoPoisoning()).toThrowError(/Poisoning detected/);17 restoreGlobals();18 expect(() => assertNoPoisoning()).not.toThrow();19 } finally {20 // eslint-disable-next-line @typescript-eslint/ban-ts-comment21 // @ts-ignore22 delete globalThis.a;23 }24 });25 it('should throw an Error if global removed and be able to revert the change', () => {26 // Arrange27 const F = globalThis.Function;28 // eslint-disable-next-line @typescript-eslint/ban-ts-comment29 // @ts-ignore30 delete globalThis.Function;31 // Act / Assert32 try {33 expect(() => assertNoPoisoning()).toThrowError(/Poisoning detected/);34 restoreGlobals();35 expect(() => assertNoPoisoning()).not.toThrow();36 } finally {37 globalThis.Function = F;38 }39 });40 it('should throw an Error if global altered via globalThis and be able to revert the change', () => {41 // Arrange42 const F = globalThis.Function;43 globalThis.Function = jest.fn();44 // Act / Assert45 try {46 expect(() => assertNoPoisoning()).toThrowError(/Poisoning detected/);47 restoreGlobals();48 expect(() => assertNoPoisoning()).not.toThrow();49 } finally {50 globalThis.Function = F;51 }52 });53 it('should throw an Error if global value altered and be able to revert the change', () => {54 // Arrange55 const F = Function;56 // eslint-disable-next-line no-global-assign57 Function = jest.fn();58 // Act / Assert59 try {60 expect(() => assertNoPoisoning()).toThrowError(/Poisoning detected/);61 restoreGlobals();62 expect(() => assertNoPoisoning()).not.toThrow();63 } finally {64 // eslint-disable-next-line no-global-assign65 Function = F;66 }67 });68 it('should throw an Error if globalThis gets changed into another type and be able to revert the change', () => {69 // Arrange70 const G = globalThis;71 (globalThis as any) = 1;72 // Act / Assert73 let error: unknown = undefined;74 try {75 assertNoPoisoning();76 } catch (err) {77 error = err;78 }79 if (error === undefined) {80 (globalThis as any) = G;81 throw new Error('No error has been thrown');82 }83 if (!/Poisoning detected/.test((error as Error).message)) {84 (globalThis as any) = G;85 throw new Error(`Received error does not fulfill expectations, got: ${error}`);86 }87 try {88 restoreGlobals();89 expect(() => assertNoPoisoning()).not.toThrow();90 } finally {91 (globalThis as any) = G;92 }93 });94 it('should be able to handle highly destructive changes removing important primitives', () => {95 // Arrange96 const own = Object.getOwnPropertyNames;97 function dropAll<T>(name: string, obj: T): void {98 let numDeleted = 0;99 for (const k of own(obj)) {100 try {101 // eslint-disable-next-line @typescript-eslint/ban-ts-comment102 // @ts-ignore103 delete obj[k];104 ++numDeleted;105 } catch (err) {106 // Object.prototype cannot be deleted, and others might too107 }108 }109 if (numDeleted === 0) {110 throw new Error(`No property has been deleted from ${name}`);111 }112 }113 dropAll('Object.prototype', Object.prototype);114 dropAll('Object', Object);115 dropAll('Array.prototype', Array.prototype);116 dropAll('Array', Array);117 dropAll('Set.prototype', Set.prototype);118 dropAll('Set', Set);119 dropAll('Map.prototype', Map.prototype);120 dropAll('Map', Map);121 dropAll('Function.prototype', Function.prototype);122 dropAll('Function', Function);123 dropAll('Error.prototype', Error.prototype);124 dropAll('Error', Error);125 // Act / Assert126 // Manual expectation mimicing "expect(() => assertNoPoisoning()).toThrowError(/Poisoning detected/)"127 // as Jest makes use of Object.keys and probably others in its code128 let caughtError: unknown = undefined;129 try {130 assertNoPoisoning();131 } catch (err) {132 caughtError = err;133 }134 if (caughtError === undefined) {135 throw new Error('Expected an error be thrown during the test');136 }137 if (!(caughtError instanceof Error)) {138 throw new Error('Expected an error of type Error to be thrown during the test');139 }140 restoreGlobals();141 expect(() => assertNoPoisoning()).not.toThrow();142 // WARNING: If restoreGlobals failed, then this test may break others143 });...

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setup.test.js

Source:setup.test.js Github

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...22 setupGloabls();23 jest.resetModuleRegistry();24 });25 afterEach(() => {26 restoreGlobals();27 });28 ['_localStorage', '_sessionStorage'].forEach((gKey) => {29 it(`[${gKey}] should define a property on the global object with writable false`, () => {30 require('../src/setup');31 expect(global[gKey.replace('_', '')].constructor.name).toBe(32 'LocalStorage'33 );34 });35 it(`[${gKey}] should define a property on the global object with writable false`, () => {36 global[gKey] = true;37 require('../src/setup');38 let e;39 try {40 global[`_${gKey.replace('_', '')}`] = 'blah';...

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helpers.js

Source:helpers.js Github

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1const _ = require('lodash');2const { defaultConfig } = require('./default-data');34// https://stackoverflow.com/a/534511965const flushPromises = () => new Promise(resolve => setTimeout(resolve));67const setGlobals = () => {8 global.configuration = _.cloneDeep(defaultConfig);9 global.DEBUG = (...args) => console.log(...args);10}1112const restoreGlobals = () => {13 global.configuration = undefined;14 global.DEBUG = undefined;15 global.helpers = undefined;16}17 ...

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Using AI Code Generation

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1restoreGlobals();2restoreGlobals();3restoreGlobals();4restoreGlobals();5restoreGlobals();6restoreGlobals();7restoreGlobals();8restoreGlobals();9restoreGlobals();10restoreGlobals();11restoreGlobals();12restoreGlobals();13restoreGlobals();14restoreGlobals();15restoreGlobals();16restoreGlobals();17restoreGlobals();18restoreGlobals();19restoreGlobals();

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Using AI Code Generation

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1import { restoreGlobals } from 'fast-check-monorepo/test-utils';2import * as fc from 'fast-check';3import { myFunction } from './myFunction';4describe('myFunction', () => {5 it('should return a string', () => {6 fc.assert(7 fc.property(fc.string(), (s) => {8 const result = myFunction(s);9 expect(typeof result).toBe('string');10 })11 );12 });13});14import * as fc from 'fast-check';15export function myFunction(s) {16 fc.pre(typeof s === 'string');17 return s;18}

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Using AI Code Generation

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1const fc = require('fast-check');2const { restoreGlobals } = require('fast-check/lib/check/arbitrary/GlobalParameters');3fc.configureGlobal({4});5fc.assert(6 fc.property(fc.integer(), (n) => {7 return n === n;8 })9);10restoreGlobals();11fc.assert(12 fc.property(fc.integer(), (n) => {13 return n === n;14 })15);16fc.assert: 1000 passed, 0 failed, 0 skipped, 0 invalid (0s)17fc.assert: 1000 passed, 0 failed, 0 skipped, 0 invalid (0s)18fc.assert: 1000 passed, 0 failed, 0 skipped, 0 invalid (0s)19fc.assert: 0 passed, 1000 failed, 0 skipped, 0 invalid (0s)20npm ERR! 404 You should bug the author to publish it (or use the name yourself!)

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Using AI Code Generation

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1const fc = require('fast-check');2const { restoreGlobal } = require('fast-check/lib/esm/check/arbitrary/GlobalRestore.js');3const { restoreGlobal } = require('fast-check/lib/esm/check/arbitrary/GlobalRestore.js');4fc.assert(5 fc.property(fc.integer(), fc.integer(), (a, b) => {6 const s = a + b;7 const p = a * b;8 return s - p === a - b;9 })10);11restoreGlobal();12fc.assert(13 fc.property(fc.integer(), fc.integer(), (a, b) => {14 const s = a + b;15 const p = a * b;16 return s - p === a - b;17 })18);

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Using AI Code Generation

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1const fc = require('fast-check');2const { restoreGlobals } = require('fast-check/lib/esm/globals');3describe('test', () => {4 it('test', () => {5 fc.assert(6 fc.property(fc.integer(), (n) => {7 expect(n).toBeGreaterThanOrEqual(0);8 })9 );10 });11});12module.exports = {13 transform: {14 },15};16module.exports = {17};18{19 "scripts": {20 },21 "devDependencies": {22 }23}

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Using AI Code Generation

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1const { restoreGlobals } = require('fast-check');2const a = 1;3restoreGlobals();4const b = 1;5console.log(a, b);6[Restore globals issue #1711](github.com/dubzzz/fast-check/...)

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Using AI Code Generation

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1const fc = require('fast-check');2const restoreGlobals = require('fast-check').restoreGlobals;3const { sample } = require('fast-check');4const { assert } = require('chai');5const { equal: deepEqual } = require('fast-deep-equal');6const { describe, it } = require('mocha');7describe('test', () => {8 it('test', () => {9 console.log('test');10 assert.equal(1, 1);11 assert.deepEqual([1, 2, 3], [1, 2, 3]);

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