Best JavaScript code snippet using fast-check-monorepo
SlicedBasedGenerator.spec.ts
Source:SlicedBasedGenerator.spec.ts
1import fc from 'fast-check';2import { SlicedBasedGenerator } from '../../../../../src/arbitrary/_internals/implementations/SlicedBasedGenerator';3import { Value } from '../../../../../src/check/arbitrary/definition/Value';4import { fakeArbitrary } from '../../__test-helpers__/ArbitraryHelpers';5import { fakeRandom } from '../../__test-helpers__/RandomHelpers';6describe('SlicedBasedGenerator', () => {7 describe('attemptExact', () => {8 it('should take one of the provided slices and return it item by item', () => {9 fc.assert(10 fc.property(11 fc.array(fc.array(fc.anything(), { minLength: 1 }), { minLength: 1 }),12 fc.nat(),13 fc.nat(),14 fc.integer({ min: 2 }),15 (slices, targetLengthMod, selectOneMod, biasFactor) => {16 // Arrange17 const { instance: arb } = fakeArbitrary();18 const { instance: mrng, nextInt } = fakeRandom();19 nextInt20 .mockReturnValueOnce(1) // 1 to go for "value from slices"21 .mockImplementationOnce((min, max) => (selectOneMod % (max - min + 1)) + min);22 const targetLength = slices[targetLengthMod % slices.length].length;23 // Act24 const generator = new SlicedBasedGenerator(arb, mrng, slices, biasFactor);25 const readFromGenerator: unknown[] = [];26 generator.attemptExact(targetLength);27 for (let index = 0; index !== targetLength; ++index) {28 readFromGenerator.push(generator.next().value);29 }30 // Assert31 expect(nextInt).toHaveBeenCalledTimes(2); // only called twice: 1/ to bias to one of the slices 2/ to select which one32 expect(nextInt).toHaveBeenCalledWith(1, biasFactor);33 expect(slices).toContainEqual(readFromGenerator);34 }35 )36 );37 });38 });39 describe('next', () => {40 it('should only go for values coming from the source arbitrary when tossing for unbias', () => {41 fc.assert(42 fc.property(43 fc.array(fc.array(fc.anything(), { minLength: 1 }), { minLength: 1 }),44 fc.infiniteStream(fc.anything()),45 fc.nat({ max: 10 }),46 fc.integer({ min: 2 }),47 (slices, streamValues, targetLength, biasFactor) => {48 // Arrange49 const producedValues: unknown[] = [];50 const { instance: arb, generate } = fakeArbitrary();51 generate.mockImplementation(() => {52 const value = streamValues.next().value;53 const context = streamValues.next().value;54 producedValues.push(value);55 return new Value(value, context);56 });57 const { instance: mrng, nextInt } = fakeRandom();58 nextInt.mockImplementation((_min, max) => max); // >min ie in [min+1,max] corresponds to unbiased59 // Act60 const generator = new SlicedBasedGenerator(arb, mrng, slices, biasFactor);61 const readFromGenerator: unknown[] = [];62 generator.attemptExact(targetLength);63 for (let index = 0; index !== targetLength; ++index) {64 readFromGenerator.push(generator.next().value);65 }66 // Assert67 expect(generate).toHaveBeenCalledTimes(targetLength);68 expect(readFromGenerator).toEqual(producedValues);69 }70 )71 );72 });73 it('should only go for values coming from the slices when tossing for bias', () => {74 fc.assert(75 fc.property(76 fc.array(fc.array(fc.anything(), { minLength: 1 }), { minLength: 1 }),77 fc.infiniteStream(fc.nat()),78 fc.nat({ max: 10 }),79 fc.integer({ min: 2 }),80 fc.boolean(),81 (slices, streamModValues, targetLength, biasFactor, withAttemptExact) => {82 // Arrange83 const { instance: arb, generate } = fakeArbitrary();84 const { instance: mrng, nextInt } = fakeRandom();85 const allValuesFromSlices = slices.flat();86 // Act87 const generator = new SlicedBasedGenerator(arb, mrng, slices, biasFactor);88 const readFromGenerator: unknown[] = [];89 if (withAttemptExact) {90 nextInt.mockImplementation((_min, max) => max); // no bias for attemptExact91 generator.attemptExact(targetLength);92 }93 for (let index = 0; index !== targetLength; ++index) {94 let returnedBias = false;95 nextInt.mockImplementation((min, max) => {96 if (!returnedBias) {97 returnedBias = true;98 return min; // ask for bias, to make sure we use slices99 }100 return (streamModValues.next().value % (max - min + 1)) + min; // pure random for next calls101 });102 const value = generator.next().value;103 expect(allValuesFromSlices).toContain(value); // should only produce values coming from slices104 readFromGenerator.push(value);105 }106 // Assert107 expect(generate).not.toHaveBeenCalled();108 }109 )110 );111 });112 });...
Using AI Code Generation
1const fc = require('fast-check');2const allValuesFromSlices = require('fast-check-monorepo').allValuesFromSlices;3const values = allValuesFromSlices([4]);5console.log('values', values);6const fc = require('fast-check');7const allValuesFromSlices = require('fast-check').allValuesFromSlices;8const values = allValuesFromSlices([9]);10console.log('values', values);
Using AI Code Generation
1import { allValuesFromSlices } from 'fast-check'2const values = allValuesFromSlices([1, 2, 3], [4, 5, 6])3console.log(values)4import { allValuesFromSlices } from 'fast-check'5fc.property(6 fc.array(fc.nat()),7 fc.array(fc.string()),8 (arr1, arr2) => {9 const values = allValuesFromSlices(arr1, arr2)10 return values.every(([a, b]) => arr1.includes(a) && arr2.includes(b))11 }12import { allValuesFromSlices } from 'fast-check'13fc.assert(14 fc.property(15 fc.array(fc.nat()),16 fc.array(fc.string()),17 (arr1, arr2) => {18 const values = allValuesFromSlices(arr1, arr2)19 return values.every(([a, b]) => arr1.includes(a) && arr2.includes(b))20 }21import { allValuesFromSlices } from 'fast-check'22fc.check(23 fc.property(24 fc.array(fc.nat()),25 fc.array(fc.string()),26 (arr1, arr2) => {
Using AI Code Generation
1import allValuesFromSlices from 'fast-check';2describe('test', () => {3 it('test', () => {4 ];5 const allValues = allValuesFromSlices(slices);6 console.log(allValues);7 });8});9I have a function that takes 3 parameters and I want to generate all possible combinations of values for those 3 parameters. I know I can use fast-check’s array() method to generate an array of values for each parameter, but how can I generate all possible combinations of values from those 3 arrays?10I have a function that takes 3 parameters and I want to generate all possible combinations of values for those 3 parameters. I know I can use fast-check’s array() method to generate an array of values for each parameter, but how can I generate all possible combinations of values from those
Using AI Code Generation
1const { allValuesFromSlices } = require('fast-check');2const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');3const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');4const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');5const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');6const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');7const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');8const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');9const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');10const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');11const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');12const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');13const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');14const { allValuesFromSlices } = require('fast-check/lib/types/property/AllValuesFromSlices');
Using AI Code Generation
1const { allValuesFromSlices } = require('fast-check-monorepo');2];3const allValues = allValuesFromSlices(slices);4console.log(allValues);5const allValues = Array.from(allValuesFromSlices(slices));6console.log(allValues);
Using AI Code Generation
1const fc = require('fast-check');2const values = fc.allValuesFromSlices([{a: 1, b: 2}, {a: 4, b: 5}]);3console.log(values);4const fc = require('fast-check');5const values = fc.allValuesFromSlices([{a: 1, b: 2}, {a: 4, b: 5}]);6console.log(values);7const fc = require('fast-check');8const values = fc.allValuesFromSlices([{a: 1, b: 2}, {a: 4, b: 5}]);9console.log(values);10const fc = require('fast-check');11const values = fc.allValuesFromSlices([{a: 1, b: 2}, {a: 4, b: 5}]);12console.log(values);13const fc = require('fast-check');14const values = fc.allValuesFromSlices([{a: 1, b: 2}, {a: 4, b: 5}]);15console.log(values);16const fc = require('fast-check');17const values = fc.allValuesFromSlices([{a: 1, b: 2}, {a: 4, b: 5}]);18console.log(values
Using AI Code Generation
1const fc = require('fast-check');2const allValuesFromSlices = require('fast-check/lib/esm/check/arbitrary/helpers/AllValuesFromSlices').allValuesFromSlices;3const allValues = allValuesFromSlices([[1,2,3], [4,5,6]]);4console.log(allValues);5const fc = require('fast-check');6const allValuesFromSlices = require('fast-check/lib/esm/check/arbitrary/helpers/AllValuesFromSlices').allValuesFromSlices;7const allValues = allValuesFromSlices([[1,2,3], [4,5,6]]);8describe('allValuesFromSlices', () => {9 it('should return all values from slices', () => {10 const expected = [1,2,3,4,5,6];11 expect(allValues).toEqual(expected);12 });13});
Using AI Code Generation
1const { allValuesFromSlices } = require('fast-check');2const { array, string } = require('fast-check');3const gen = array(string());4const slices = gen.slices();5const values = allValuesFromSlices(slices);6console.log(values);7const { allValuesFromSlices } = require('fast-check');8const { array, string } = require('fast-check');9const gen = array(string());10const slices = gen.slices();11const values = allValuesFromSlices(slices);12console.log(values);13const { allValuesFromSlices } = require('fast-check');14const { array, string } = require('fast-check');15const gen = array(string());16const slices = gen.slices();17const values = allValuesFromSlices(slices);18console.log(values);19const { allValuesFromSlices } = require('fast-check');20const { array, string } = require('fast-check');21const gen = array(string());22const slices = gen.slices();
Using AI Code Generation
1import * as fc from 'fast-check';2import { allValuesFromSlices } from 'fast-check-monorepo';3const arb = fc.string();4const maxSlices = 10;5const maxSliceSize = 10;6const maxDepth = 5;7const arbs = allValuesFromSlices(arb, maxSlices, maxSliceSize, maxDepth);8fc.assert(9 fc.property(arbs, (v) => {10 const obj = v.reduce((acc, val) => ({ ...acc, ...val }), {});11 console.log(obj);12 return true;13 })14);15import * as fc from 'fast-check';16import { allValuesFromSlices } from 'fast-check-monorepo';17const arb = fc.string();18const maxSlices = 10;19const maxSliceSize = 10;20const maxDepth = 5;21const arbs = allValuesFromSlices(arb, maxSlices, maxSliceSize, maxDepth);22fc.assert(23 fc.property(arbs, (v) => {24 const obj = v.reduce((acc, val) => ({ ...acc, ...val }), {});25 console.log(obj);26 return true;27 })28);29import * as fc from 'fast-check';30import { allValuesFromSlices } from 'fast-check-monorepo';31const arb = fc.string();32const maxSlices = 10;33const maxSliceSize = 10;34const maxDepth = 5;35const arbs = allValuesFromSlices(arb, maxSlices, maxSliceSize, maxDepth);36fc.assert(37 fc.property(arbs, (v) => {38 const obj = v.reduce((acc, val) => ({ ...acc, ...val }), {});39 console.log(obj
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.
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Get 100 minutes of automation test minutes FREE!!