How to use biasNumericRange method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

BiasNumericRange.spec.ts

Source:BiasNumericRange.spec.ts

...11        fc.integer({ min: Number.MIN_SAFE_INTEGER, max: -1 }),12        fc.integer({ min: 1, max: Number.MAX_SAFE_INTEGER }),13        (min, max) => {14          // Arrange / Act15          const ranges = biasNumericRange(min, max, integerLogLike);16          // Assert17          expect(ranges).toHaveLength(3);18          expect(ranges).toEqual([19            { min: expect.toBeWithinRange(min, 0), max: expect.toBeWithinRange(0, max) }, // close to zero20            { min: expect.toBeWithinRange(0, max), max: max }, // close to max21            { min: min, max: expect.toBeWithinRange(min, 0) }, // close to min22          ]);23        }24      )25    ));26  it('should bias close to extreme values if min and max have same signs', () =>27    fc.assert(28      fc.property(29        fc.constantFrom(1, -1),30        fc.integer({ min: 0, max: Number.MAX_SAFE_INTEGER }),31        fc.integer({ min: 0, max: Number.MAX_SAFE_INTEGER }),32        (sign, minRaw, maxRaw) => {33          // Arrange34          fc.pre(minRaw !== maxRaw);35          const minRawSigned = sign * minRaw;36          const maxRawSigned = sign * maxRaw;37          const [min, max] = minRawSigned < maxRawSigned ? [minRawSigned, maxRawSigned] : [maxRawSigned, minRawSigned];38          // Act39          const ranges = biasNumericRange(min, max, integerLogLike);40          // Assert41          expect(ranges).toHaveLength(2);42          const closeToMin = { min: expect.toBeWithinRange(min + 1, max), max: max }; // close to max43          const closeToMax = { min: min, max: expect.toBeWithinRange(min, max - 1) }; // close to min44          if (sign > 0) expect(ranges).toEqual([closeToMax, closeToMin]);45          else expect(ranges).toEqual([closeToMin, closeToMax]);46        }47      )48    ));49  it('should not bias anything for equal values of min and max', () =>50    fc.assert(51      fc.property(fc.maxSafeInteger(), (minMax) => {52        // Arrange / Act53        const ranges = biasNumericRange(minMax, minMax, integerLogLike);54        // Assert55        expect(ranges).toHaveLength(1);56        expect(ranges).toEqual([{ min: minMax, max: minMax }]); // no bias, cannot do more57      })58    ));59  it('should always bias in valid ranges when using integerLogLike', () =>60    fc.assert(61      fc.property(fc.maxSafeInteger(), fc.maxSafeInteger(), (a, b) => {62        // Arrange63        const min = a < b ? a : b;64        const max = a < b ? b : a;65        // Act66        const ranges = biasNumericRange(min, max, integerLogLike);67        // Assert68        expect(ranges).not.toHaveLength(0);69        for (const range of ranges) {70          expect(range.max).toBeGreaterThanOrEqual(range.min);71          expect(min).toBeLessThanOrEqual(range.max);72          expect(max).toBeGreaterThanOrEqual(range.max);73          expect(min).toBeLessThanOrEqual(range.min);74          expect(max).toBeGreaterThanOrEqual(range.min);75        }76      })77    ));78  if (typeof BigInt !== 'undefined') {79    it('should always bias in valid ranges when using bigIntLogLike', () =>80      fc.assert(81        fc.property(fc.bigInt(), fc.bigInt(), (a, b) => {82          // Arrange83          const min = a < b ? a : b;84          const max = a < b ? b : a;85          // Act86          const ranges = biasNumericRange(min, max, bigIntLogLike);87          // Assert88          expect(ranges).not.toHaveLength(0);89          for (const range of ranges) {90            expect(range.max).toBeGreaterThanOrEqual(range.min);91            expect(min).toBeLessThanOrEqual(range.max);92            expect(max).toBeGreaterThanOrEqual(range.max);93            expect(min).toBeLessThanOrEqual(range.min);94            expect(max).toBeGreaterThanOrEqual(range.min);95          }96        })97      ));98  }99});100// Helpers...

BigIntArbitrary.ts

Source:BigIntArbitrary.ts

...17  private computeGenerateRange(mrng: Random, biasFactor: number | undefined): { min: bigint; max: bigint } {18    if (biasFactor === undefined || mrng.nextInt(1, biasFactor) !== 1) {19      return { min: this.min, max: this.max };20    }21    const ranges = biasNumericRange(this.min, this.max, bigIntLogLike);22    if (ranges.length === 1) {23      return ranges[0];24    }25    const id = mrng.nextInt(-2 * (ranges.length - 1), ranges.length - 2); // 1st range has the highest priority26    return id < 0 ? ranges[0] : ranges[id + 1];27  }28  canShrinkWithoutContext(value: unknown): value is bigint {29    return typeof value === 'bigint' && this.min <= value && value <= this.max;30  }31  shrink(current: bigint, context?: unknown): Stream<Value<bigint>> {32    if (!BigIntArbitrary.isValidContext(current, context)) {33      // No context:34      //   Take default target and shrink towards it35      //   Try the target on first try...

BiasNumericRange.ts

Source:BiasNumericRange.ts

...10  if (v === BigInt(0)) return BigInt(0);11  return BigInt(String(v).length);12}13/** @internal */14function biasNumericRange(min: number, max: number, logLike: (n: number) => number): { min: number; max: number }[];15function biasNumericRange(min: bigint, max: bigint, logLike: (n: bigint) => bigint): { min: bigint; max: bigint }[];16function biasNumericRange<NType extends number | bigint>(17  min: NType,18  max: NType,19  logLike: (n: NType) => NType20): { min: NType; max: NType }[] {21  if (min === max) {22    return [{ min: min, max: max }];23  }24  if (min < 0 && max > 0) {25    // min < 0 && max > 026    const logMin = logLike(-min as any); // min !== 027    const logMax = logLike(max); // max !== 028    return [29      { min: -logMin as any, max: logMax }, // close to zero,...

Using AI Code Generation

1const fc = require('fast-check');2const biasNumericRange = require('fast-check-monorepo').biasNumericRange;3const biasNumericRange1 = require('fast-check-monorepo').biasNumericRange1;4const biasNumericRange2 = require('fast-check-monorepo').biasNumericRange2;5const biasNumericRange3 = require('fast-check-monorepo').biasNumericRange3;6const biasNumericRange4 = require('fast-check-monorepo').biasNumericRange4;7const biasNumericRange5 = require('fast-check-monorepo').biasNumericRange5;8const biasNumericRange6 = require('fast-check-monorepo').biasNumericRange6;9const biasNumericRange7 = require('fast-check-monorepo').biasNumericRange7;10const biasNumericRange8 = require('fast-check-monorepo').biasNumericRange8;11const biasNumericRange9 = require('fast-check-monorepo').biasNumericRange9;12const biasNumericRange10 = require('fast-check-monorepo').biasNumericRange10;13const biasNumericRange11 = require('fast-check-monorepo').biasNumericRange11;14const biasNumericRange12 = require('fast-check-monorepo').biasNumericRange12;15const biasNumericRange13 = require('fast-check-monorepo').biasNumericRange13;16const biasNumericRange14 = require('fast-check-monorepo').biasNumericRange14;17const biasNumericRange15 = require('fast-check-monorepo').biasNumericRange15;18const biasNumericRange16 = require('fast-check-monorepo').biasNumericRange16;19const biasNumericRange17 = require('fast-check-monorepo').biasNumericRange17;20const biasNumericRange18 = require('fast-check-monorepo').biasNumericRange18;21const biasNumericRange19 = require('fast-check-monorepo').biasNumericRange19;22const biasNumericRange20 = require('fast-check-monorepo').biasNumericRange20;23const biasNumericRange21 = require('fast-check-monorepo').biasNumericRange21;24const biasNumericRange22 = require('fast-check-monorepo').biasNumericRange22;25const biasNumericRange23 = require('fast-check-monorepo').biasNumericRange23;26const biasNumericRange24 = require('fast-check-monorepo').biasNumericRange24;27const biasNumericRange25 = require('fast-check-monore

Using AI Code Generation

1import * as fc from 'fast-check';2import * as fcM from 'fast-check-monorepo';3const range = fcM.biasNumericRange(0, 100, 50, 10);4const range2 = fcM.biasNumericRange(100, 0, 50, 10);5const range3 = fcM.biasNumericRange(0, 100, 50, 100);6const range4 = fcM.biasNumericRange(100, 0, 50, 100);7console.log("range: " + range);8console.log("range2: " + range2);9console.log("range3: " + range3);10console.log("range4: " + range4);11const range5 = fcM.biasNumericRange(0, 100, 50, 100);12const range6 = fcM.biasNumericRange(100, 0, 50, 100);13const range7 = fcM.biasNumericRange(0, 100, 50, 10);14const range8 = fcM.biasNumericRange(100, 0, 50, 10);15console.log("range5: " + range5);16console.log("range6: " + range6);17console.log("range7: " + range7);18console.log("range8: " + range8);19const range9 = fcM.biasNumericRange(0, 100, 50, 100);20const range10 = fcM.biasNumericRange(100, 0, 50, 100);

Using AI Code Generation

1import fc from 'fast-check';2test('biasNumericRange', () => {3  fc.assert(4    fc.property(fc.biasNumericRange(1, 10), (n) => {5      expect(n).toBeGreaterThanOrEqual(1);6      expect(n).toBeLessThanOrEqual(10);7    })8  );9});10import fc from 'fast-check';11test('biasNumericRange', () => {12  fc.assert(13    fc.property(fc.biasNumericRange(1, 10), (n) => {14      expect(n).toBeGreaterThanOrEqual(1);15      expect(n).toBeLessThanOrEqual(10);16    })17  );18});19import fc from 'fast-check';20test('biasNumericRange', () => {21  fc.assert(22    fc.property(fc.biasNumericRange(1, 10), (n) => {23      expect(n).toBeGreaterThanOrEqual(1);24      expect(n).toBeLessThanOrEqual(10);25    })26  );27});28import fc from 'fast-check';29test('biasNumericRange', () => {30  fc.assert(31    fc.property(fc.biasNumericRange(1, 10), (n) => {32      expect(n).toBeGreaterThanOrEqual(1);33      expect(n).toBeLessThanOrEqual(10);34    })35  );36});37import fc from 'fast-check';

Using AI Code Generation

1const { biasNumericRange } = require("fast-check");2const range = [-100, 100];3const bias = 0.5;4const biasedRange = biasNumericRange(range, bias);5console.log(biasedRange);6console.log(range);7console.log(bias);8console.log(range[1] - range[0] - biasedRange[1] + biasedRange[0]);9console.log(range[1] - range[0] - biasedRange[1] + biasedRange[0]);10console.log(range[1] - range[0] - biasedRange[1] + biasedRange[0]);11console.log(range[1] - range[0] - biasedRange[1] + biasedRange[0]);12console.log(range[1] - range[0] - biasedRange[1] + biasedRange[0]);13console.log(range[1] - range[0] - biasedRange[1] + biasedRange[0]);14console.log(range[1] - range[0] - biasedRange[1] + biasedRange[0]);15console.log(range[1] - range[0] - biasedRange[1] + biasedRange[0]);16console.log(range[1] - range[0] -

Using AI Code Generation

1const fc = require('fast-check');2function getNumber() {3  return Math.random();4}5function biasNumericRange(min, max, random) {6  return Math.floor(min + Math.pow(random, 2) * (max - min));7}8function unBiasNumericRange(min, max, random) {9  return Math.floor(min + Math.pow(random, 1 / 2) * (max - min));10}11function biasNumericRange2(min, max, random) {12  return Math.floor(min + Math.pow(random, 3) * (max - min));13}14function unBiasNumericRange2(min, max, random) {15  return Math.floor(min + Math.pow(random, 1 / 3) * (max - min));16}17function biasNumericRange3(min, max, random) {18  return Math.floor(min + Math.pow(random, 4) * (max - min));19}20function unBiasNumericRange3(min, max, random) {21  return Math.floor(min + Math.pow(random, 1 / 4) * (max - min));22}23function biasNumericRange4(min, max, random) {24  return Math.floor(min + Math.pow(random, 5) * (max - min));25}26function unBiasNumericRange4(min, max, random) {

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