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How to use romanNumberArb method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

main.spec.ts

Source:main.spec.ts

1import { toRoman, fromRoman, MaxRoman, LettersValue, NumLetters } from './src/roman';2import fc from 'fast-check';3describe('toRoman', () => {4  it('should be able to revert toRoman using fromRoman', () => {5    fc.assert(6      fc.property(romanNumberArb, (n) => {7        expect(fromRoman(toRoman(n))).toBe(n);8      })9    );10  });11  it('should produce a non empty string', () => {12    fc.assert(13      fc.property(romanNumberArb, (n) => {14        expect(toRoman(n)).not.toBe('');15      })16    );17  });18  it('should be injective', () => {19    fc.assert(20      fc.property(romanNumberArb, romanNumberArb, (n1, n2) => {21        fc.pre(n1 !== n2);22        expect(toRoman(n2)).not.toBe(toRoman(n1));23      })24    );25  });26  it('should start negative romans with a minus sign', () => {27    fc.assert(28      fc.property(fc.integer({ min: -MaxRoman, max: -1 }), (n) => {29        expect(toRoman(n)[0]).toBe('-');30      })31    );32  });33  it('should return same value for positive and negative romans excluding minus sign', () => {34    fc.assert(35      fc.property(posRomanNumberArb, (n) => {36        expect(toRoman(-n)).toBe(`-${toRoman(n)}`);37      })38    );39  });40  it('should produce only one of the allowed letters', () => {41    const letters: string[] = LettersValue.map(([_, v]) => v);42    fc.assert(43      fc.property(posRomanNumberArb, (n) => {44        expect([...toRoman(n)].every((c) => letters.includes(c))).toBe(true);45      })46    );47  });48  it('should not output too many times the same letter', () => {49    const letters: string[] = LettersValue.map(([_, v]) => v);50    fc.assert(51      fc.property(posRomanNumberArb, (n) => {52        const repr = toRoman(n);53        for (let idx = 0; idx !== letters.length; ++idx) {54          expect([...repr].filter((c) => c === letters[idx]).length).toBeLessThanOrEqual(55            idx % 256              ? 1 // 5 * 10^N appear at most 1 time57              : 4 // 10^N appear at most 4 times58          );59        }60      })61    );62  });63  it('should not produce a too long roman output', () => {64    const MaxRomanReprLength = (NumLetters - 1) / 2 + (3 * (NumLetters + 1)) / 2 + 1;65    fc.assert(66      fc.property(romanNumberArb, (n) => {67        expect(toRoman(n).length).toBeLessThanOrEqual(MaxRomanReprLength);68      })69    );70  });71});72describe('fromRoman', () => {73  it('should read simple roman strings (no letter doing a minus)', () => {74    fc.assert(75      fc.property(fc.array(fc.nat(3), { minLength: NumLetters, maxLength: NumLetters }), (choices) => {76        fc.pre(choices.find((e) => e !== 0) !== undefined);77        let romanRepr = '';78        let expected = 0;79        for (let ridx = 0; ridx !== choices.length; ++ridx) {80          const idx = NumLetters - ridx - 1;81          const num = idx % 2 && choices[idx] > 1 ? 1 : choices[idx];82          romanRepr += LettersValue[idx][1].repeat(num);83          expected += num * LettersValue[idx][0];84        }85        expect(fromRoman(romanRepr)).toBe(expected);86      })87    );88  });89});90// Helpers91const romanNumberArb = fc.integer({ min: -MaxRoman, max: MaxRoman });...

Using AI Code Generation

1import { romanNumberArb } from 'fast-check-monorepo/lib/src/check/arbitrary/RomanNumeralsArbitrary.js';2import { assert } from 'chai';3describe('Test 3', () => {4    it('should pass', () => {5        const arb = romanNumberArb();6        const value = arb.sample();7        assert.equal(value, 'I');8    });9});

Using AI Code Generation

1const romanNumberArb = require('fast-check-monorepo').romanNumberArb2describe('Roman number', () => {3    it('should be able to be converted to arabic number', () => {4        fc.assert(5            fc.property(romanNumberArb(), romanNumber => {6                expect(romanNumber).not.toBeNull()7            })8    })9})10const romanNumberArb = require('fast-check-monorepo').romanNumberArb11describe('Roman number', () => {12    it('should be able to be converted to arabic number', () => {13        fc.assert(14            fc.property(romanNumberArb(), romanNumber => {15                expect(romanNumber).not.toBeNull()16            })17    })18})19const romanNumberArb = require('fast-check-monorepo').romanNumberArb20describe('Roman number', () => {21    it('should be able to be converted to arabic number', () => {22        fc.assert(23            fc.property(romanNumberArb(), romanNumber => {24                expect(romanNumber).not.toBeNull()25            })26    })27})28const romanNumberArb = require('fast-check-monorepo').romanNumberArb29describe('Roman number', () => {30    it('should be able to be converted to arabic number', () => {31        fc.assert(32            fc.property(romanNumberArb(), romanNumber => {33                expect(romanNumber).not.toBeNull()34            })35    })36})

Using AI Code Generation

1const { romanNumberArb } = require("fast-check-monorepo");2const fc = require("fast-check");3const arb = romanNumberArb();4fc.assert(fc.property(arb, roman => {5    return true;6}));7function reverseString(str) {8    let reversed = "";9    for (let i = str.length - 1; i >= 0; i--) {10        reversed += str[i];11    }12    return reversed;13}14console.log(reverseString("hello"));15function reverseString(str) {16    if (str === "") {17        return "";18    } else {19        return reverseString(str.substr(1)) + str.charAt(0);20    }21}22console.log(reverseString("hello"));23function reverseString(str) {24    return [...str].reverse().join("");25}26console.log(reverseString("hello"));27function reverseString(str) {28    return str.split("").reverse().join("");29}30console.log(reverseString("hello"));31function reverseString(str) {32    return str.split("").reduce((reversed, character) => {33        return character + reversed;34    }, "");35}36console.log(reverseString("hello"));37const reverseString = str => {38    return str.split("").reduce((reversed, character) => {39        return character + reversed;40    }, "");41}42console.log(reverseString("hello"));43const reverseString = str => str.split("").reduce((reversed, character) => character + reversed, "");44console.log(reverseString("hello"));

Using AI Code Generation

1const fastCheck = require('fast-check');2const fc = require('fast-check-monorepo');3const assert = require('chai').assert;4describe('Roman Number', () => {5  it('should generate roman number', () => {6    fc.assert(7      fc.property(fc.romanNumberArb(), romanNumber => {8        assert.match(romanNumber, /^[IVXLCDM]+$/);9      })10    );11  });12});13const fastCheck = require('fast-check');14const fc = require('fast-check-monorepo');15const assert = require('chai').assert;16describe('Roman Number', () => {17  it('should generate roman number', () => {18    fc.assert(19      fc.property(fc.romanNumberArb(), romanNumber => {20        assert.match(romanNumber, /^[IVXLCDM]+$/);21      })22    );23  });24});25const fastCheck = require('fast-check');26const fc = require('fast-check-monorepo');27const assert = require('chai').assert;28describe('Roman Number', () => {29  it('should generate roman number', () => {30    fc.assert(31      fc.property(fc.romanNumberArb(), romanNumber => {32        assert.match(romanNumber, /^[IVXLCDM]+$/);33      })34    );35  });36});37const fastCheck = require('fast-check');38const fc = require('fast-check-monorepo');39const assert = require('chai').assert;40describe('Roman Number', () => {41  it('should generate roman number', () => {42    fc.assert(43      fc.property(fc.romanNumberArb

Using AI Code Generation

1const { romanNumberArb } = require('fast-check');2const { romanToArabic, arabicToRoman } = require('./roman-numbers');3const romanToArabicArray = romanNumberArb().map(romanToArabic);4const arabicToRomanArray = romanToArabicArray.map(arabicToRoman);5console.log(romanToArabicArray);6console.log(arabicToRomanArray);7const romanToArabic = (roman) => {8  const romanToArabicMap = {9  };10  let arabic = 0;11  for (let i = 0; i < roman.length; i++) {12    if (romanToArabicMap[roman[i]] < romanToArabicMap[roman[i + 1]]) {13      arabic += romanToArabicMap[roman[i + 1]] - romanToArabicMap[roman[i]];14      i++;15    } else {16      arabic += romanToArabicMap[roman[i]];17    }18  }19  return arabic;20};21const arabicToRoman = (arabic) => {22    { arabic: 1000, roman: 'M' },23    { arabic: 900, roman: 'CM' },24    { arabic: 500, roman: 'D' },25    { arabic: 400, roman: 'CD' },26    { arabic: 100, roman: 'C' },27    { arabic: 90, roman: 'XC' },28    { arabic: 50, roman: 'L' },29    { arabic: 40, roman: 'XL' },30    { arabic: 10, roman: 'X' },31    { arabic: 9, roman: 'IX' },32    { arabic: 5, roman: 'V' },33    { arabic:

Using AI Code Generation

1const { romanNumberArb } = require('fast-check');2const arrayRomanNumbers = romanNumberArb().generate(100);3console.log(`Array of roman numbers: ${arrayRomanNumbers}`);4const convertToArabic = (roman) => {5    const romanNumberMap = new Map([6    ]);7    let arabicNumber = 0;8    for (let i = 0; i < roman.length; i++) {9        if (romanNumberMap.get(roman[i]) < romanNumberMap.get(roman[i + 1])) {10            arabicNumber -= romanNumberMap.get(roman[i]);11        } else {12            arabicNumber += romanNumberMap.get(roman[i]);13        }14    }15    return arabicNumber;16};17const arrayArabicNumbers = arrayRomanNumbers.map((roman) =>18    convertToArabic(roman)19);20console.log(`Array of arabic numbers: ${arrayArabicNumbers}`);21const { string16bitsArb } = require('fast-check');22const array16bitsStrings = string16bitsArb().generate(100);23console.log(`Array of 16bits strings: ${array16bitsStrings}`);24const { string8bitsArb } = require('fast-check');25const array8bitsStrings = string8bitsArb().generate(100);26console.log(`Array of 8bits strings: ${array8bitsStrings}`);27const { stringJsonArb } = require('fast-check');28const arrayJsonStrings = stringJsonArb().generate(100);29console.log(`Array of JSON strings: ${arrayJsonStrings}`);

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