Best JavaScript code snippet using fast-check-monorepo
DoubleArbitrary.spec.ts
Source: DoubleArbitrary.spec.ts
1import * as fc from '../../../src/fast-check';2import { seed } from '../seed';3describe(`DoubleArbitrary (seed: ${seed})`, () => {4 describe('double', () => {5 const limitedNumRuns = 1000;6 const numRuns = 25000;7 const sampleDouble = fc.sample(fc.double(), { seed, numRuns });8 const sampleDoubleNoBias = fc.sample(fc.double().noBias(), { seed, numRuns });9 function shouldGenerate(expectedValue: number) {10 it('Should be able to generate ' + fc.stringify(expectedValue), () => {11 const hasValue = sampleDouble.findIndex((v) => Object.is(v, expectedValue)) !== -1;12 expect(hasValue).toBe(true);13 });14 it('Should not be able to generate ' + fc.stringify(expectedValue) + ' if not biased (very unlikely)', () => {15 const hasValue = sampleDoubleNoBias.findIndex((v) => Object.is(v, expectedValue)) !== -1;16 expect(hasValue).toBe(false);17 });18 }19 const extremeValues = [20 Number.POSITIVE_INFINITY,21 Number.NEGATIVE_INFINITY,22 Number.NaN,23 0,24 -0,25 Number.MIN_VALUE,26 -Number.MIN_VALUE,27 Number.MAX_VALUE,28 -Number.MAX_VALUE,29 ];30 for (const extremeValue of extremeValues) {31 // Should be able to generate an exact extreme value in {numRuns} runs32 // The set of possible values for doubles is of 18_437_736_874_454_810_627 distinct values (incl. nan, -/+inf)33 shouldGenerate(extremeValue);34 }35 it(`Should be able to generate one of the extreme values in a limited amount of runs (${limitedNumRuns})`, () => {36 const hasValue =37 sampleDouble.slice(0, limitedNumRuns).findIndex((v) => {38 // Check if we can find one of the extreme values in our limited sample39 return extremeValues.findIndex((expectedValue) => Object.is(v, expectedValue)) !== -1;40 }) !== -1;41 expect(hasValue).toBe(true);42 });43 // Remark:44 // Number.MIN_VALUE = (2**-1022) * (2**-52)45 // In range: [Number.MIN_VALUE ; 2 ** -1021[ there are 2**53 distinct values46 // Remark:47 // Number.MAX_VALUE = (2**1023) * (2 - 2**-52)48 // In range: [2**1023 ; Number.MAX_VALUE] there are 2**52 distinct values49 //50 // If we join those 4 ranges (including negative versions), they only represent 0.147 % of all the possible values.51 // Indeed there are 18_437_736_874_454_810_624 distinct values for double if we exclude -infinity, +infinty and NaN.52 // So most of the generated values should be in the union of the ranges ]-2**1023 ; -2**-1021] and [2**-1021 ; 2**1023[.53 const filterIntermediateValues = (sample: number[]) => {54 return sample.filter((v) => {55 const absV = Math.abs(v);56 return absV >= 2 ** -1021 && absV < 2 ** 1023;57 });58 };59 it('Should be able to generate intermediate values most of the time even if biased', () => {60 const countIntermediate = filterIntermediateValues(sampleDouble).length;61 expect(countIntermediate).toBeGreaterThan(0.5 * sampleDouble.length);62 });63 it('Should be able to generate intermediate values most of the time if not biased', () => {64 const countIntermediate = filterIntermediateValues(sampleDoubleNoBias).length;65 expect(countIntermediate).toBeGreaterThan(0.5 * sampleDoubleNoBias.length);66 });67 });...
Using AI Code Generation
1const fc = require('fast-check');2const sampleDoubleNoBias = require('fast-check-monorepo').sampleDoubleNoBias;3fc.assert(4 fc.property(fc.integer(), fc.integer(), (a, b) => {5 const s = sampleDoubleNoBias(a, b);6 return s >= a && s <= b;7 })8);9console.log("test3.js completed");10const fc = require('fast-check');11const sampleDoubleNoBias = require('fast-check-monorepo').sampleDoubleNoBias;12fc.assert(13 fc.property(fc.integer(), fc.integer(), (a, b) => {14 const s = sampleDoubleNoBias(a, b);15 return s >= a && s <= b;16 })17);18console.log("test4.js completed");19const fc = require('fast-check');20const sampleDoubleNoBias = require('fast-check-monorepo').sampleDoubleNoBias;21fc.assert(22 fc.property(fc.integer(), fc.integer(), (a, b) => {23 const s = sampleDoubleNoBias(a, b);24 return s >= a && s <= b;25 })26);27console.log("test5.js completed");28var exec = require('child_process').exec;29var child1 = exec('node test1.js', function(err, stdout, stderr) {30 if (err) throw err;31 else console.log(stdout);32});33var child2 = exec('node test2.js', function(err, stdout, stderr) {34 if (err) throw err;35 else console.log(stdout);36});37var child3 = exec('node test3.js', function(err, stdout, stderr) {38 if (err) throw err;39 else console.log(stdout);40});41var child4 = exec('node test4.js', function(err, stdout, stderr) {42 if (err) throw err;43 else console.log(stdout);44});45var child5 = exec('node test5.js', function(err, stdout, stderr) {46 if (err) throw err;47 else console.log(stdout);48});49child1.stdout.on('data', function(data) {50 console.log(data);51});52child2.stdout.on('data', function(data) {53 console.log(data);54});
Using AI Code Generation
1const fc = require('fast-check');2const { sampleDoubleNoBias } = require('fast-check-monorepo');3const { sampleDoubleNoBias: sampleDoubleNoBias2 } = require('fast-check-monorepo');4console.log('sampleDoubleNoBias', sampleDoubleNoBias());5console.log('sampleDoubleNoBias2', sampleDoubleNoBias2());6const fc = require('fast-check');7const { sampleDoubleNoBias: sampleDoubleNoBias2 } = require('fast-check-monorepo');8console.log('sampleDoubleNoBias2', sampleDoubleNoBias2());9const fc = require('fast-check');10const { sampleDoubleNoBias } = require('fast-check-monorepo');11console.log('sampleDoubleNoBias', sampleDoubleNoBias());12const fc = require('fast-check');13const { sampleDoubleNoBias: sampleDoubleNoBias2 } = require('fast-check-monorepo');14console.log('sampleDoubleNoBias2', sampleDoubleNoBias2());15const fc = require('fast-check');16const { sampleDoubleNoBias: sampleDoubleNoBias2 } = require('fast-check-monorepo');17console.log('sampleDoubleNoBias2', sampleDoubleNoBias2());
Using AI Code Generation
1const {sampleDoubleNoBias} = require('fast-check');2console.log(sampleDoubleNoBias(0, 1, 1));3const {sampleDoubleNoBias} = require('fast-check');4console.log(sampleDoubleNoBias(0, 1, 1));5const {sampleDoubleNoBias} = require('fast-check');6console.log(sampleDoubleNoBias(0, 1, 1));7const {sampleDoubleNoBias} = require('fast-check');8console.log(sampleDoubleNoBias(0, 1, 1));9const {sampleDoubleNoBias} = require('fast-check');10console.log(sampleDoubleNoBias(0, 1, 1));11const {sampleDoubleNoBias} = require('fast-check');12console.log(sampleDoubleNoBias(0, 1, 1));13const {sampleDoubleNoBias} = require('fast-check');14console.log(sampleDoubleNoBias(0, 1, 1));15const {sampleDoubleNoBias} = require('fast-check');16console.log(sampleDoubleNoBias(0, 1, 1));17const {sampleDoubleNoBias} = require('fast-check');18console.log(sampleDoubleNoBias(0, 1, 1));19const {sampleDoubleNoBias} = require('fast-check');20console.log(sampleDoubleNoBias(0, 1, 1));
Using AI Code Generation
1const fc = require('fast-check');2const sampleDoubleNoBias = require('fast-check-monorepo');3const sample = sampleDoubleNoBias();4console.log(sample);5const fc = require('fast-check');6const sampleDoubleNoBias = require('fast-check-monorepo');7const sample = sampleDoubleNoBias();8console.log(sample);9const fc = require('fast-check');10const sampleDoubleNoBias = require('fast-check-monorepo');11const sample = sampleDoubleNoBias();12console.log(sample);13const fc = require('fast-check');14const sampleDoubleNoBias = require('fast-check-monorepo');15const sample = sampleDoubleNoBias();16console.log(sample);17const fc = require('fast-check');18const sampleDoubleNoBias = require('fast-check-monorepo');19const sample = sampleDoubleNoBias();20console.log(sample);21const fc = require('fast-check');22const sampleDoubleNoBias = require('fast-check-monorepo');23const sample = sampleDoubleNoBias();24console.log(sample);25const fc = require('fast-check');26const sampleDoubleNoBias = require('fast-check-monorepo');27const sample = sampleDoubleNoBias();28console.log(sample);
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