KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use computedIndexMinusZero method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

IndexToMappedConstant.spec.ts

Source:IndexToMappedConstant.spec.ts

1import {2  indexToMappedConstantMapperFor,3  indexToMappedConstantUnmapperFor,4} from '../../../../../src/arbitrary/_internals/mappers/IndexToMappedConstant';5describe('indexToMappedConstantMapperFor', () => {6  it.each`7    index | value8    ${0}  | ${'A0'}9    ${1}  | ${'A1'}10    ${9}  | ${'A9'}11    ${10} | ${'B0'}12    ${11} | ${'D0'}13    ${12} | ${'D1'}14    ${15} | ${'D4'}15  `('should properly map index $index to value $value', ({ index, value }) => {16    // Arrange17    const entries = [18      { num: 10, build: (index: number) => `A${index}` },19      { num: 1, build: (index: number) => `B${index}` },20      { num: 0, build: (index: number) => `C${index}` },21      { num: 5, build: (index: number) => `D${index}` },22    ];23    // Act24    const computedValue = indexToMappedConstantMapperFor(entries)(index);25    // Assert26    expect(computedValue).toBe(value);27  });28});29describe('indexToMappedConstantUnmapperFor', () => {30  it.each`31    index | value32    ${0}  | ${'A0'}33    ${1}  | ${'A1'}34    ${9}  | ${'A9'}35    ${10} | ${'B0'}36    ${11} | ${'D0'}37    ${12} | ${'D1'}38    ${15} | ${'D4'}39  `('should properly unmap value $value to index $index', ({ index, value }) => {40    // Arrange41    const entries = [42      { num: 10, build: (index: number) => `A${index}` },43      { num: 1, build: (index: number) => `B${index}` },44      { num: 0, build: (index: number) => `C${index}` },45      { num: 5, build: (index: number) => `D${index}` },46    ];47    // Act48    const computedIndex = indexToMappedConstantUnmapperFor(entries)(value);49    // Assert50    expect(computedIndex).toBe(index);51  });52  it('should properly unmap 0, -0 and NaN when defined in the mappings', () => {53    // Arrange54    const entries = [55      { num: 10, build: (index: number) => `A${index}` },56      { num: 1, build: (_index: number) => 0 },57      { num: 2, build: (index: number) => `C${index}` },58      { num: 1, build: (_index: number) => -0 },59      { num: 1, build: (_index: number) => Number.NaN },60      { num: 5, build: (index: number) => `D${index}` },61    ];62    // Act63    const unmapper = indexToMappedConstantUnmapperFor<unknown>(entries);64    const computedIndexZero = unmapper(0);65    const computedIndexMinusZero = unmapper(-0);66    const computedIndexNaN = unmapper(Number.NaN);67    const computedIndexOther = unmapper('D2');68    // Assert69    expect(computedIndexZero).toBe(10);70    expect(computedIndexMinusZero).toBe(13);71    expect(computedIndexNaN).toBe(14);72    expect(computedIndexOther).toBe(17);73  });74  it('should not call any build function when creating the unmapper', () => {75    // Arrange76    const entries = [77      { num: 10, build: jest.fn() },78      { num: 3, build: jest.fn() },79    ];80    // Act81    indexToMappedConstantUnmapperFor(entries);82    // Assert83    expect(entries[0].build).not.toHaveBeenCalled();84    expect(entries[1].build).not.toHaveBeenCalled();85  });86  it('should call all build functions on first call to unmapper', () => {87    // Arrange88    const entries = [89      { num: 10, build: jest.fn().mockReturnValue(0) },90      { num: 3, build: jest.fn().mockReturnValue(1) },91    ];92    // Act93    const unmapper = indexToMappedConstantUnmapperFor(entries);94    unmapper(0);95    // Assert96    expect(entries[0].build).toHaveBeenCalledTimes(entries[0].num);97    expect(entries[1].build).toHaveBeenCalledTimes(entries[1].num);98  });99  it('should not call again build functions on second call to unmapper', () => {100    // Arrange101    const entries = [102      { num: 10, build: jest.fn().mockReturnValue(0) },103      { num: 3, build: jest.fn().mockReturnValue(1) },104    ];105    // Act106    const unmapper = indexToMappedConstantUnmapperFor(entries);107    unmapper(0);108    unmapper(1);109    // Assert110    expect(entries[0].build).toHaveBeenCalledTimes(entries[0].num);111    expect(entries[1].build).toHaveBeenCalledTimes(entries[1].num);112  });...

Using AI Code Generation

1{2  "scripts": {3  },4  "dependencies": {5  }6}7const fc = require('fast-check');8const computedIndexMinusZero = (array) => {9  const index = fc.integer(0, array.length - 1).generate();10  return array[index] - 0;11};12const array = [1, 2, 3];13console.log(computedIndexMinusZero(array));14console.log(computedIndexMinusZero(array));

Using AI Code Generation

1const fc = require('fast-check');2const { computedIndexMinusZero } = require('fast-check-monorepo');3fc.assert(4  fc.property(5    fc.array(fc.anything()),6    fc.integer(0, 100),7    (arr, index) => {8      const computedIndex = computedIndexMinusZero(index, arr.length);9      return computedIndex >= 0 && computedIndex <= arr.length;10    }11);12const fc = require('fast-check');13const { computedIndexMinusZero } = require('fast-check-monorepo');14fc.assert(15  fc.property(16    fc.array(fc.anything()),17    fc.integer(0, 100),18    (arr, index) => {19      const computedIndex = computedIndexMinusZero(index, arr.length);20      return computedIndex >= 0 && computedIndex <= arr.length;21    }22);23const fc = require('fast-check');24const { computedIndexMinusZero } = require('fast-check-monorepo');25fc.assert(26  fc.property(27    fc.array(fc.anything()),28    fc.integer(0, 100),29    (arr, index) => {30      const computedIndex = computedIndexMinusZero(index, arr.length);31      return computedIndex >= 0 && computedIndex <= arr.length;32    }33);34const fc = require('fast-check');35const { computedIndexMinusZero } = require('fast-check-monorepo');36fc.assert(37  fc.property(38    fc.array(fc.anything()),39    fc.integer(0, 100),40    (arr, index) => {41      const computedIndex = computedIndexMinusZero(index, arr.length);42      return computedIndex >= 0 && computedIndex <= arr.length;43    }44);45const fc = require('fast-check');46const { computedIndexMinusZero } = require('fast-check-monorepo');47fc.assert(48  fc.property(49    fc.array(fc.anything()),50    fc.integer(0, 100),51    (arr, index) => {

Using AI Code Generation

1import { computedIndexMinusZero } from 'fast-check-monorepo';2const result = computedIndexMinusZero(1);3console.log(result);4{5  "dependencies": {6  }7}8import { computedIndexMinusZero } from './index';9const result = computedIndexMinusZero(1);10console.log(result);11{12  "scripts": {13  },14  "devDependencies": {15  }16}

Using AI Code Generation

1const fc = require('fast-check');2const { computedIndexMinusZero } = require('fast-check-monorepo');3const { array } = require('fast-check');4fc.assert(5  fc.property(6    array(fc.integer()),7    (arr) => {8      const idx = computedIndexMinusZero(arr);9      return idx === -1 || (idx >= 0 && idx < arr.length);10    },11    { verbose: true }12);

Using AI Code Generation

1const { computedIndexMinusZero } = require('fast-check-monorepo');2const { check, property } = require('fast-check');3describe('computedIndexMinusZero', () => {4  it('should not return -0', () => {5    check(6      property(computedIndexMinusZero(), (value) => {7        expect(value).not.toBe(-0);8      })9    );10  });11});

Using AI Code Generation

1You can also use the following syntax to import the method:2const { computedIndexMinusZero } = require('fast-check-monorepo');3const { computedIndexMinusZero } = require('fast-check-monorepo');4const array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];5const index = computedIndexMinusZero(array.length);6console.log(array[index]);

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.