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How to use base64Unmapper method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

base64String.ts

Source:base64String.ts

1import { Arbitrary } from '../check/arbitrary/definition/Arbitrary';2import { array, ArrayConstraintsInternal } from './array';3import { base64 } from './base64';4import { MaxLengthUpperBound } from './_internals/helpers/MaxLengthFromMinLength';5import { StringSharedConstraints } from './_shared/StringSharedConstraints';6import { codePointsToStringMapper, codePointsToStringUnmapper } from './_internals/mappers/CodePointsToString';7import { stringToBase64Mapper, stringToBase64Unmapper } from './_internals/mappers/StringToBase64';8import { createSlicesForString } from './_internals/helpers/SlicesForStringBuilder';9export { StringSharedConstraints } from './_shared/StringSharedConstraints';10/**11 * For base64 strings12 *13 * A base64 string will always have a length multiple of 4 (padded with =)14 *15 * @param constraints - Constraints to apply when building instances (since 2.4.0)16 *17 * @remarks Since 0.0.118 * @public19 */20function base64String(constraints: StringSharedConstraints = {}): Arbitrary<string> {21  const { minLength: unscaledMinLength = 0, maxLength: unscaledMaxLength = MaxLengthUpperBound, size } = constraints;22  const minLength = unscaledMinLength + 3 - ((unscaledMinLength + 3) % 4);23  const maxLength = unscaledMaxLength - (unscaledMaxLength % 4);24  const requestedSize = constraints.maxLength === undefined && size === undefined ? '=' : size;25  if (minLength > maxLength) throw new Error('Minimal length should be inferior or equal to maximal length');26  if (minLength % 4 !== 0) throw new Error('Minimal length of base64 strings must be a multiple of 4');27  if (maxLength % 4 !== 0) throw new Error('Maximal length of base64 strings must be a multiple of 4');28  const charArbitrary = base64();29  const experimentalCustomSlices = createSlicesForString(charArbitrary, codePointsToStringUnmapper);30  const enrichedConstraints: ArrayConstraintsInternal<string> = {31    minLength,32    maxLength,33    size: requestedSize,34    experimentalCustomSlices,35  };36  return array(charArbitrary, enrichedConstraints)37    .map(codePointsToStringMapper, codePointsToStringUnmapper)38    .map(stringToBase64Mapper, stringToBase64Unmapper);39}...

base64.ts

Source:base64.ts

...7  if (v < 62) return v + 48 - 52; // 0-98  return v === 62 ? 43 : 47; // +/9}10/** @internal */11function base64Unmapper(v: number) {12  if (v >= 65 && v <= 90) return v - 65; // A-Z13  if (v >= 97 && v <= 122) return v - 97 + 26; // a-z14  if (v >= 48 && v <= 57) return v - 48 + 52; // 0-915  return v === 43 ? 62 : v === 47 ? 63 : -1; // +/16}17/**18 * For single base64 characters - A-Z, a-z, 0-9, + or /19 * @remarks Since 0.0.120 * @public21 */22export function base64(): Arbitrary<string> {23  return buildCharacterArbitrary(0, 63, base64Mapper, base64Unmapper);...

StringToBase64.spec.ts

Source:StringToBase64.spec.ts

1import { stringToBase64Unmapper } from '../../../../../src/arbitrary/_internals/mappers/StringToBase64';2describe('stringToBase64Unmapper', () => {3  it.each`4    source        | expected5    ${'aaaa'}     | ${'aaaa'}6    ${'aaa='}     | ${'aaa'}7    ${'aa=='}     | ${'aa'}8    ${'abcdefgh'} | ${'abcdefgh'}9    ${'aÃ aa'}     | ${'aÃ aa' /* not rejected by this unmapper as it does not deal with first bytes */}10  `('should be able to unmap $source', ({ source, expected }) => {11    // Arrange / Act / Assert12    expect(stringToBase64Unmapper(source)).toEqual(expected);13  });14  it.each`15    source16    ${'aaaaa'}17    ${'a==='}18  `('should refuse to unmap invalid base64 strings like $source', ({ source }) => {19    // Arrange / Act / Assert20    expect(() => stringToBase64Unmapper(source)).toThrowError();21  });...

Using AI Code Generation

1const {base64Unmapper} = require('fast-check');2console.log(base64Unmapper(0));3console.log(base64Unmapper(1));4console.log(base64Unmapper(2));5console.log(base64Unmapper(3));6console.log(base64Unmapper(4));7console.log(base64Unmapper(5));8console.log(base64Unmapper(6));9console.log(base64Unmapper(7));10console.log(base64Unmapper(8));11console.log(base64Unmapper(9));12console.log(base64Unmapper(10));13console.log(base64Unmapper(11));14console.log(base64Unmapper(12));15console.log(base64Unmapper(13));16console.log(base64Unmapper(14));17console.log(base64Unmapper(15));18console.log(base64Unmapper(16));19console.log(base64Unmapper(17));20console.log(base64Unmapper(18));21console.log(base64Unmapper(19));22console.log(base64Unmapper(20));23console.log(base64Unmapper(21));24console.log(base64Unmapper(22));25console.log(base64Unmapper(23));26console.log(base64Unmapper(24));27console.log(base64Unmapper(25));28console.log(base64Unmapper(26));29console.log(base64Unmapper(27));30console.log(base64Unmapper(28));31console.log(base64Unmapper(29));32console.log(base64Unmapper(30));33console.log(base64Unmapper(31));34console.log(base64Unmapper(32));35console.log(base64Unmapper(33));36console.log(base64Unmapper(34));37console.log(base64Unmapper(35));38console.log(base64Unmapper(36));39console.log(base64Unmapper(37));40console.log(base64Unmapper(38));41console.log(base64Unmapper(39));42console.log(base64Unmapper(40));43console.log(base64Unmapper(41));44console.log(base64Unmapper(42));45console.log(base64Unmapper(43));46console.log(base64Unmapper(44));47console.log(base64Unmapper(45));48console.log(base64Unmapper(46));49console.log(base64Unmapper(47));50console.log(base64Unmapper(48));51console.log(base64Unmapper(49));52console.log(base64Unmapper(50));53console.log(base64Unmapper(51));54console.log(base64Unmapper(52));55console.log(base64Unmapper(53

Using AI Code Generation

1const fc = require("fast-check");2const { base64Unmapper } = require("fast-check/lib/esm/mapper/Base64Unmapper");3const { Base64 } = require("js-base64");4const { base64 } = require("fast-check/lib/esm/mapper/Base64");5fc.assert(6  fc.property(fc.string(), (s) => {7    const b64 = Base64.encode(s);8    const unmap = base64Unmapper(b64);9    return unmap != null && unmap.length === 1 && unmap[0] === s;10  })11);12const fc = require("fast-check");13const { base64Unmapper } = require("fast-check/lib/esm/mapper/Base64Unmapper");14const { Base64 } = require("js-base64");15const { base64 } = require("fast-check/lib/esm/mapper/Base64");16fc.assert(17  fc.property(fc.string(), (s) => {18    const b64 = Base64.encode(s);19    const unmap = base64Unmapper(b64);20    return unmap != null && unmap.length === 1 && unmap[0] === s;21  })22);23const fc = require("fast-check");24const { base64Unmapper } = require("fast-check/lib/esm/mapper/Base64Unmapper");25const { Base64 } = require("js-base64");26const { base64 } = require("fast-check/lib/esm/mapper/Base64");27fc.assert(28  fc.property(fc.string(), (s) => {29    const b64 = Base64.encode(s);30    const unmap = base64Unmapper(b64);31    return unmap != null && unmap.length === 1 && unmap[0] === s;32  })33);34const fc = require("fast-check");35const { base64Unmapper } = require("fast-check/lib/esm/mapper/Base64Unmapper");36const { Base64 } = require("js-base64");

Using AI Code Generation

1const fc = require('fast-check');2const { base64Unmapper } = require('fast-check/lib/arbitrary/_internals/mappers/Base64Unmapper.js');3const { base64Mapper } = require('fast-check/lib/arbitrary/_internals/mappers/Base64Mapper.js');4  .string()5  .filter((s) => s.length > 0)6  .map(base64Mapper);7fc.assert(8  fc.property(base64Arb, (s) => {9    const decoded = base64Unmapper(s);10    if (decoded.length === 0) {11      return true;12    }13    return base64Mapper(decoded) === s;14  })15);16const fc = require('fast-check');17const { base64Unmapper } = require('fast-check/lib/arbitrary/_internals/mappers/Base64Unmapper.js');18const { base64Mapper } = require('fast-check/lib/arbitrary/_internals/mappers/Base64Mapper.js');19  .string()20  .filter((s) => s.length > 0)21  .map(base64Mapper);22fc.assert(23  fc.property(base64Arb, (s) => {24    const decoded = base64Unmapper(s);25    if (decoded.length === 0) {26      return true;27    }28    return base64Mapper(decoded) === s;29  })30);31const fc = require('fast-check');32const { base64Unmapper } = require('fast-check/lib/arbitrary/_internals/mappers/Base64Unmapper.js');33const { base64Mapper } = require('fast-check/lib/arbitrary/_internals/mappers/Base64Mapper.js');

Using AI Code Generation

1const base64Unmapper = require('fast-check').base64Unmapper;2const fc = require('fast-check');3const base64 = base64Unmapper();4fc.assert(5  fc.property(base64, (str) => {6    console.log('str', str);7    return true;8  })9);

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