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How to use restoreGlobals method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

main.spec.ts

Source:main.spec.ts

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  });...

setup.test.js

Source:setup.test.js

...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';...

helpers.js

Source:helpers.js

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
...

Using AI Code Generation

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

Using AI Code Generation

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}

Using AI Code Generation

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!)

Using AI Code Generation

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);

Using AI Code Generation

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}

Using AI Code Generation

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/...)

Using AI Code Generation

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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