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]);

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