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How to use sampleDoubleNoBias method in fast-check-monorepo

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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