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How to use valueUnderTest method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

RomanNumbers.js

Source:RomanNumbers.js

1"use strict";2var converter = require('../routes/ConvertToRomanNumber');3var testhelper = require('../routes/TestPairs');4module.exports.WhenWeInput1_ThenWeGetI = function (test) {5    testhelper.AreEqual({expected : "I", valueUnderTest: 1}, test)6};7module.exports.WhenWeInput2_ThenWeGetII = function (test) {8    testhelper.AreEqual({expected : "II", valueUnderTest: 2}, test)9};10module.exports.WhenWeInput3_ThenWeGetIII = function (test) {11    testhelper.AreEqual({expected : "III", valueUnderTest: 3}, test)12};13module.exports.WhenWeInput5_ThenWeGetV = function (test) {14    testhelper.AreEqual({expected : "V", valueUnderTest: 5}, test)15};16module.exports.WhenWeInput10_ThenWeGetX = function (test) {17    testhelper.AreEqual({expected : "X", valueUnderTest: 10}, test)18};19module.exports.WhenWeInput4_ThenWeGetIV = function (test) {20    testhelper.AreEqual({expected : "IV", valueUnderTest: 4}, test)21};22module.exports.WhenWeInput100_ThenWeGetC = function (test) {23    testhelper.AreEqual({expected : "C", valueUnderTest: 100}, test)24};25module.exports.WhenWeInput500_ThenWeGetD = function (test) {26    testhelper.AreEqual({expected : "D", valueUnderTest: 500}, test)27};28module.exports.WhenWeInput50_ThenWeGetL = function (test) {29    testhelper.AreEqual({expected : "L", valueUnderTest: 50}, test)30};31module.exports.WhenWeInput1000_ThenWeGetM = function (test) {32    testhelper.AreEqual({expected : "M", valueUnderTest: 1000}, test)33};34module.exports.WhenWeInput20_ThenWeGetXXWhichIsTwoTimes10 = function (test) {35    testhelper.AreEqual({expected : "XX", valueUnderTest: 20}, test)36};37module.exports.WhenWeInput3000_ThenWeGetMMM = function (test) {38    testhelper.AreEqual({expected : "MMM", valueUnderTest: 3000}, test)39};40module.exports.WhenWeInput11_ThenWeGetXI = function (test) {41    testhelper.AreEqual({expected : "XI", valueUnderTest: 11}, test)42};43module.exports.WhenWeInput125_ThenWeGetCXXV = function (test) {44    testhelper.AreEqual({expected : "CXXV", valueUnderTest: 125}, test)45};46module.exports.WhenWeInput949_ThenWeGetCMXLIX = function (test) {47    testhelper.AreEqual({expected : "CMXLIX", valueUnderTest: 949}, test)48};49module.exports.WhenWeInput9_ThenWeGetIX = function (test) {50    testhelper.AreEqual({expected : "IX", valueUnderTest: 9}, test)51};52module.exports.WhenWeInput49_ThenWeGetXLIX = function (test) {53    testhelper.AreEqual({expected : "XLIX", valueUnderTest: 49}, test)54};55module.exports.WhenWeInput2949_ThenWeGetMMCMXLIX = function (test) {56    testhelper.AreEqual({expected : "MMCMXLIX", valueUnderTest: 2949}, test)...

gtin13.test.ts

Source:gtin13.test.ts

1import { InvalidArgument } from "../../domain/errors/invalid_argument";2import { Gtin13 } from "../../domain/value_objects/gtin13";3describe("Gtin13 test", () => {4  test("Given a valid gtin13 value then the object is created", () => {5    //Given6    const valueUnderTest = "1234567890418";7    //When8    const gtin13TestObject = new Gtin13(valueUnderTest);9    //Then10    expect(gtin13TestObject).toBeInstanceOf(Gtin13);11  });12  test.each(["1234567890ABC", "123456789CDEF", "ABCDEFGHIJKLM"])(13    "Given an non-numeric gtin13 value then the object isn't created",14    (valueUnderTest: string) => {15      //When16      const sut = () => {17        const gtin13TestObject = new Gtin13(valueUnderTest);18      };19      //Then20      expect(sut).toThrow(InvalidArgument);21    }22  );23  test.each(["1234567890123", "1234567897894", "1236567897894"])(24    "Given an invalid checksum then the object isn't created",25    (valueUnderTest: string) => {26      //When27      const sut = () => {28        const gtin13TestObject = new Gtin13(valueUnderTest);29      };30      //Then31      expect(sut).toThrow(InvalidArgument);32    }33  );...

challenge-3.test.ts

Source:challenge-3.test.ts

1/**2 * Unit Test: Challenge-3.js3 * 4 */5import { isDivisibleBy5 } from './challenge-3';6describe('isDivisibleBy5', () => {7    it('returns true if a number is divisible by 5', () => {8        // arrange9        const expectedResult = true;10        const valueUnderTest = 50;11        // act12        const actualResult = isDivisibleBy5(valueUnderTest);13        // assert14        expect(actualResult).toEqual(expectedResult);15    });16    it('returns false if a number is not divisible by 5', () => {17        // arrange18        const expectedResult = false;19        const valueUnderTest = 51;20        // act21        const actualResult = isDivisibleBy5(valueUnderTest);22        // assert23        expect(actualResult).toEqual(expectedResult);24    });...

Using AI Code Generation

1var fc = require('fast-check');2fc.assert(fc.property(fc.integer(), (a) => {3  return a == a;4}));5import fc from 'fast-check';6import * as assert from 'assert';7describe('myFunction', () => {8  it('should return the same string', () => {9    fc.assert(10      fc.property(fc.string(), (s) => {11        const result = myFunction(s);12        assert.strictEqual(result, s);13      })14    );15  });16});17fc.assert(18  fc.property(fc.string(), (s) => {19    const result = myFunction(s);20    assert.strictEqual(result, s);21  }),22  { verbose:

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