KaneAI - World’s First E2E Software Testing Agent.Book a Demo 
How to use mrng1 method in fast-check-monorepo
Best JavaScript code snippet using fast-check-monorepo
SchedulerArbitrary.spec.ts
Source:SchedulerArbitrary.spec.ts 
1import { SchedulerArbitrary } from '../../../../src/arbitrary/_internals/SchedulerArbitrary';2import { fakeRandom } from '../__test-helpers__/RandomHelpers';3import * as SchedulerImplemMock from '../../../../src/arbitrary/_internals/implementations/SchedulerImplem';4import { ScheduledTask } from '../../../../src/arbitrary/_internals/implementations/SchedulerImplem';5function beforeEachHook() {6 jest.resetModules();7 jest.restoreAllMocks();8}9beforeEach(beforeEachHook);10describe('SchedulerArbitrary', () => {11 describe('generate', () => {12 it('should instanciate a SchedulerImplem on generate and clone the random generator', () => {13 // Arrange14 const act = jest.fn();15 const { instance: mrng, clone } = fakeRandom(); // random received by generate (risk to be altered from the outside so we clone it)16 const { instance: mrng1, clone: clone1 } = fakeRandom(); // random used by the first taskScheduler17 const { instance: mrng2 } = fakeRandom(); // random used by the clone of taskScheduler is needed18 clone.mockReturnValueOnce(mrng1);19 clone1.mockReturnValueOnce(mrng2);20 const fakeScheduler = {} as SchedulerImplemMock.SchedulerImplem<unknown>;21 const SchedulerImplem = jest.spyOn(SchedulerImplemMock, 'SchedulerImplem');22 SchedulerImplem.mockReturnValue(fakeScheduler);23 // Act24 const arb = new SchedulerArbitrary(act);25 const g = arb.generate(mrng, undefined);26 // Assert27 expect(g.value).toBe(fakeScheduler);28 expect(SchedulerImplem).toHaveBeenCalledTimes(1);29 expect(SchedulerImplem).toHaveBeenCalledWith(30 act,31 expect.objectContaining({ clone: expect.any(Function), nextTaskIndex: expect.any(Function) })32 );33 expect(clone).toHaveBeenCalledTimes(1);34 expect(clone1).toHaveBeenCalledTimes(1);35 });36 it('should build a taskScheduler pulling random values out of the cloned instance of Random', () => {37 // Arrange38 const act = jest.fn();39 const scheduledTasks = [{}, {}, {}, {}, {}, {}, {}, {}] as ScheduledTask<unknown>[];40 const { instance: mrng, clone } = fakeRandom();41 const { instance: mrng1, clone: clone1, nextInt } = fakeRandom();42 const { instance: mrng2 } = fakeRandom();43 clone.mockReturnValueOnce(mrng1);44 clone1.mockReturnValueOnce(mrng2);45 const fakeScheduler = {} as SchedulerImplemMock.SchedulerImplem<unknown>;46 const SchedulerImplem = jest.spyOn(SchedulerImplemMock, 'SchedulerImplem');47 SchedulerImplem.mockReturnValue(fakeScheduler);48 const arb = new SchedulerArbitrary(act);49 arb.generate(mrng, undefined);50 // Act51 const taskScheduler = SchedulerImplem.mock.calls[0][1];52 taskScheduler.nextTaskIndex(scheduledTasks);53 // Assert54 expect(nextInt).toHaveBeenCalledTimes(1);55 expect(nextInt).toHaveBeenCalledWith(0, scheduledTasks.length - 1);56 });57 it('should build a taskScheduler that can be cloned and create the same values', () => {58 // Arrange59 const act = jest.fn();60 const scheduledTasks = [{}, {}, {}, {}, {}, {}, {}, {}] as ScheduledTask<unknown>[];61 const { instance: mrng, clone } = fakeRandom();62 const { instance: mrng1, clone: clone1, nextInt } = fakeRandom();63 const { instance: mrng2, clone: clone2, nextInt: nextIntBis } = fakeRandom();64 const { instance: mrng3 } = fakeRandom();65 clone.mockReturnValueOnce(mrng1);66 clone1.mockImplementationOnce(() => {67 expect(nextInt).not.toHaveBeenCalled(); // if we pulled values clone is not a clone of the source68 return mrng2;69 });70 clone2.mockImplementationOnce(() => {71 expect(nextIntBis).not.toHaveBeenCalled(); // if we pulled values clone is not a clone of the source72 return mrng3;73 });74 nextInt.mockReturnValueOnce(5).mockReturnValueOnce(2);75 nextIntBis.mockReturnValueOnce(5).mockReturnValueOnce(2);76 const fakeScheduler = {} as SchedulerImplemMock.SchedulerImplem<unknown>;77 const SchedulerImplem = jest.spyOn(SchedulerImplemMock, 'SchedulerImplem');78 SchedulerImplem.mockReturnValue(fakeScheduler);79 const arb = new SchedulerArbitrary(act);80 arb.generate(mrng, undefined);81 // Act82 const taskScheduler = SchedulerImplem.mock.calls[0][1];83 const v1 = taskScheduler.nextTaskIndex(scheduledTasks);84 const v2 = taskScheduler.nextTaskIndex(scheduledTasks);85 const taskScheduler2 = taskScheduler.clone();86 const u1 = taskScheduler2.nextTaskIndex(scheduledTasks);87 const u2 = taskScheduler2.nextTaskIndex(scheduledTasks);88 // Assert89 expect(nextInt).toHaveBeenCalledTimes(2);90 expect(nextInt).toHaveBeenCalledWith(0, scheduledTasks.length - 1);91 expect(nextIntBis).toHaveBeenCalledTimes(2);92 expect(nextIntBis).toHaveBeenCalledWith(0, scheduledTasks.length - 1);93 expect(v1).toBe(u1);94 expect(v2).toBe(u2);95 });96 });97 describe('canShrinkWithoutContext', () => {98 it('should return false for any Scheduler received without any context (even for SchedulerImplem)', () => {99 // Arrange100 const act = jest.fn();101 // Act102 const arb = new SchedulerArbitrary(act);103 const out = arb.canShrinkWithoutContext(104 new SchedulerImplemMock.SchedulerImplem(act, { clone: jest.fn(), nextTaskIndex: jest.fn() })105 );106 // Assert107 expect(out).toBe(false);108 });109 it('should return false even for its own values', () => {110 // Arrange111 const act = jest.fn();112 const { instance: mrng, clone } = fakeRandom();113 const { instance: mrng1, clone: clone1 } = fakeRandom();114 const { instance: mrng2 } = fakeRandom();115 clone.mockReturnValueOnce(mrng1);116 clone1.mockReturnValueOnce(mrng2);117 // Act118 const arb = new SchedulerArbitrary(act);119 const g = arb.generate(mrng, undefined);120 const out = arb.canShrinkWithoutContext(g.value);121 // Assert122 expect(out).toBe(false);123 });124 });125 describe('shrink', () => {126 it('should always shrink to nil', () => {127 // Arrange128 const act = jest.fn();129 const { instance: mrng, clone } = fakeRandom();130 const { instance: mrng1, clone: clone1 } = fakeRandom();131 const { instance: mrng2 } = fakeRandom();132 clone.mockReturnValueOnce(mrng1);133 clone1.mockReturnValueOnce(mrng2);134 // Act135 const arb = new SchedulerArbitrary(act);136 const { value, context } = arb.generate(mrng, undefined);137 const shrinks = [...arb.shrink(value, context)];138 // Assert139 expect(shrinks).toHaveLength(0);140 });141 });...
Random.spec.ts
Source:Random.spec.ts
1import * as prand from 'pure-rand';2import * as fc from 'fast-check';3import { Random } from '../../../../src/random/generator/Random';4const MAX_SIZE = 2048;5describe('Random', () => {6 describe('next', () => {7 it('Should produce values within 0 and 2 ** n - 1', () =>8 fc.assert(9 fc.property(fc.integer(), fc.nat(31), fc.nat(MAX_SIZE), (seed, n, num) => {10 const mrng = new Random(prand.xorshift128plus(seed));11 for (let idx = 0; idx !== num; ++idx) {12 const v = mrng.next(n);13 if (v < 0 || v > (((1 << n) - 1) | 0)) return false;14 }15 return true;16 })17 ));18 });19 describe('nextInt', () => {20 it('Should produce values within the range', () =>21 fc.assert(22 fc.property(fc.integer(), fc.integer(), fc.integer(), fc.nat(MAX_SIZE), (seed, a, b, num) => {23 const mrng = new Random(prand.xorshift128plus(seed));24 const min = a < b ? a : b;25 const max = a < b ? b : a;26 for (let idx = 0; idx !== num; ++idx) {27 const v = mrng.nextInt(min, max);28 if (min > v || max < v) return false;29 }30 return true;31 })32 ));33 it('Should produce the same sequences given same seeds', () =>34 fc.assert(35 fc.property(fc.integer(), fc.nat(MAX_SIZE), (seed, num) => {36 const mrng1 = new Random(prand.xorshift128plus(seed));37 const mrng2 = new Random(prand.xorshift128plus(seed));38 for (let idx = 0; idx !== num; ++idx) if (mrng1.nextInt() !== mrng2.nextInt()) return false;39 return true;40 })41 ));42 });43 describe('nextDouble', () => {44 it('Should produce values within 0 and 1', () =>45 fc.assert(46 fc.property(fc.integer(), fc.nat(MAX_SIZE), (seed, num) => {47 const mrng = new Random(prand.xorshift128plus(seed));48 for (let idx = 0; idx !== num; ++idx) {49 const v = mrng.nextDouble();50 if (v < 0 || v >= 1) return false;51 }52 return true;53 })54 ));55 });56 describe('clone', () => {57 it('Should produce the same sequences', () =>58 fc.assert(59 fc.property(fc.integer(), fc.nat(MAX_SIZE), (seed, num) => {60 const mrng1 = new Random(prand.xorshift128plus(seed));61 const mrng2 = mrng1.clone();62 for (let idx = 0; idx !== num; ++idx) if (mrng1.nextInt() !== mrng2.nextInt()) return false;63 return true;64 })65 ));66 });...
precache-manifest.a99a8ddda518a225e5f7c453d0da578f.js
Source:precache-manifest.a99a8ddda518a225e5f7c453d0da578f.js
1self.__precacheManifest = (self.__precacheManifest || []).concat([2 {3 "revision": "12b9f0c467289ba919ecda7b4bf138de",4 "url": "/momentum/index.html"5 },6 {7 "revision": "15d9853062c75fc8fb89",8 "url": "/momentum/static/css/2.4707e12a.chunk.css"9 },10 {11 "revision": "df4ebd00298a8f8b7b50",12 "url": "/momentum/static/css/main.502c1ce3.chunk.css"13 },14 {15 "revision": "15d9853062c75fc8fb89",16 "url": "/momentum/static/js/2.ff5c5240.chunk.js"17 },18 {19 "revision": "0749163b59fbee32225059cb60c18af6",20 "url": "/momentum/static/js/2.ff5c5240.chunk.js.LICENSE.txt"21 },22 {23 "revision": "df4ebd00298a8f8b7b50",24 "url": "/momentum/static/js/main.d1ef2ca8.chunk.js"25 },26 {27 "revision": "dd5edded77f39b117d48",28 "url": "/momentum/static/js/runtime-main.de89ae0f.js"29 },30 {31 "revision": "938e334e398ce45a293bb064c3e35b04",32 "url": "/momentum/static/media/aft1.938e334e.jpg"33 },34 {35 "revision": "c1672133f22c4ee5096076882b9f353e",36 "url": "/momentum/static/media/aft2.c1672133.jpg"37 },38 {39 "revision": "77544be1b392fe2073f7d6d3615acbec",40 "url": "/momentum/static/media/aft3.77544be1.jpg"41 },42 {43 "revision": "c91881efaec8674511252aac34f1043a",44 "url": "/momentum/static/media/aft4.c91881ef.jpg"45 },46 {47 "revision": "c8d50e6e14376fd136696e5c5a7875ab",48 "url": "/momentum/static/media/evng1.c8d50e6e.jpg"49 },50 {51 "revision": "6e660a2904d2f78f025f42f1392d0f7e",52 "url": "/momentum/static/media/evng2.6e660a29.jpg"53 },54 {55 "revision": "acf901568208f8ae0aa9329415534723",56 "url": "/momentum/static/media/evng3.acf90156.jpg"57 },58 {59 "revision": "799f7b9e89fa647b7e98c3c5c2167922",60 "url": "/momentum/static/media/evng4.799f7b9e.jpg"61 },62 {63 "revision": "776b02c6442a789314bcf2295e2ea357",64 "url": "/momentum/static/media/mrng1.776b02c6.jpg"65 },66 {67 "revision": "b30227c46d19e7e44502e9924ff40deb",68 "url": "/momentum/static/media/mrng2.b30227c4.jpg"69 },70 {71 "revision": "8d4bcf576881795706035b81f8729b1c",72 "url": "/momentum/static/media/mrng3.8d4bcf57.jpg"73 }...
Using AI Code Generation
1const mrng1 = require('fast-check-monorepo').mrng1;2console.log(mrng1(1));3console.log(mrng1(2));4console.log(mrng1(3));5console.log(mrng1(4));6console.log(mrng1(5));7console.log(mrng1(6));8console.log(mrng1(7));9console.log(mrng1(8));10console.log(mrng1(9));11console.log(mrng1(10));12console.log(mrng1(11));13console.log(mrng1(12));14console.log(mrng1(13));15console.log(mrng1(14));16console.log(mrng1(15));17console.log(mrng1(16));18console.log(mrng1(17));19console.log(mrng1(18));20console.log(mrng1(19));21console.log(mrng1(20));22console.log(mrng1(21));23console.log(mrng1(22));24console.log(mrng1(23));25console.log(mrng1(24));26console.log(mrng1(25));27console.log(mrng1(26));28console.log(mrng1(27));29console.log(mrng1(28));30console.log(mrng1(29));31console.log(mrng1(30));32console.log(mrng1(31));33console.log(mrng1(32));34console.log(mrng1(33));35console.log(mrng1(34));36console.log(mrng1(35));37console.log(mrng1(36));38console.log(mrng1(37));39console.log(mrng1(38));40console.log(mrng1(39));41console.log(mrng1(40));42console.log(mrng1(41));43console.log(mrng1(42));44console.log(mrng1(43));45console.log(mrng1(44));46console.log(mrng1(45));47console.log(mrng1(46));48console.log(mrng1(47));49console.log(mrng1(48));50console.log(mrng1(49));51console.log(mrng1(50));52console.log(mrng1(51));53console.log(mrng1(52));54console.log(mrng1(53));55console.log(mrng1(54));56console.log(mrng1(55));57console.log(mrng1(56));58console.log(mrng1(57));59console.log(mrng1(58));60console.log(mrng1(59));61console.log(mrng1(60));
Using AI Code Generation
1const fc = require('fast-check');2const { mrng1 } = require('@dubzzz/fast-check-prng');3const seed = 42;4const mrng = mrng1(seed);5const mrng2 = mrng1(seed);6fc.check(fc.property(fc.integer(), fc.integer(), (a, b) => a + b === b + a), {7});8fc.check(fc.property(fc.integer(), fc.integer(), (a, b) => a + b === b + a), {9});
Using AI Code Generation
1var mrng1 = require("fast-check-monorepo").mrng1;2var i = 0;3while (i < 10) {4 console.log(mrng1());5 i++;6}7You should use require('fast-check-monorepo').mrng18{
Using AI Code Generation
1const fc = require('fast-check');2fc.mrng1(0, 1, 2, 3, 4, 5, 6, 7).next().value;3const fc = require('fast-check');4fc.mrng1(0, 1, 2, 3, 4, 5, 6, 7).next().value;5const fc = require('fast-check');6fc.mrng1(0, 1, 2, 3, 4, 5, 6, 7).next().value;7const fc = require('fast-check');8fc.mrng1(0, 1, 2, 3, 4, 5, 6, 7).next().value;9const fc = require('fast-check');10fc.mrng1(0, 1, 2, 3, 4, 5, 6, 7).next().value;11const fc = require('fast-check');12fc.mrng1(0, 1, 2, 3, 4, 5, 6, 7).next().value;13const fc = require('fast-check');14fc.mrng1(0, 1, 2, 3, 4, 5, 6, 7).next().value;15const fc = require('fast-check');
Using AI Code Generation
1import { mrng1 } from "fast-check-monorepo";2const generate = mrng1(42);3generate();4generate();5generate();6{7 "compilerOptions": {8 "paths": {9 }10 }11}
Automation Testing Tutorials
Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
LambdaTest Learning Hubs:
- JUnit Tutorial
- TestNG Tutorial
- Webdriver Tutorial
- WebDriverIO Tutorial
- Protractor Tutorial
- Selenium 4 Tutorial
- Jenkins Tutorial
- NUnit Tutorial
- Jest Tutorial
- Playwright Tutorial
- Cypress Tutorial
- PyTest Tutorial
YouTube
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Run fast-check-monorepo automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
