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How to use propArbitrary method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

ReplayFailures.spec.ts

Source:ReplayFailures.spec.ts

1import * as fc from '../../src/fast-check';2import { seed } from './seed';3describe(`ReplayFailures (seed: ${seed})`, () => {4  const propArbitrary = fc.uniqueArray(fc.hexaString());5  const propCheck = (data: string[]) => {6    // element at <idx> should not contain the first character of the element just before7    // 01, 12, 20  - is correct8    // 01, 12, 21  - is not9    if (data.length === 0) return true;10    for (let idx = 1; idx < data.length; ++idx) {11      if (data[idx].indexOf(data[idx - 1][0]) !== -1) return false;12    }13    return true;14  };15  const prop = fc.property(propArbitrary, propCheck);16  describe('fc.sample', () => {17    it('Should rebuild counterexample using sample and (path, seed)', () => {18      const out = fc.check(prop, { seed: seed });19      expect(out.failed).toBe(true);20      expect(fc.sample(propArbitrary, { seed: seed, path: out.counterexamplePath!, numRuns: 1 })).toEqual(21        out.counterexample22      );23    });24    it('Should rebuild the whole shrink path using sample', () => {25      const failuresRecorded: string[][] = [];26      const out = fc.check(27        fc.property(propArbitrary, (data) => {28          if (propCheck(data)) return true;29          failuresRecorded.push(data);30          return false;31        }),32        { seed: seed }33      );34      expect(out.failed).toBe(true);35      const replayedFailures = [];36      const segments = out.counterexamplePath!.split(':');37      for (let idx = 1; idx !== segments.length + 1; ++idx) {38        const p = segments.slice(0, idx).join(':');39        const g = fc.sample(propArbitrary, { seed: seed, path: p, numRuns: 1 });40        replayedFailures.push(g[0]);41      }42      expect(replayedFailures).toEqual(failuresRecorded);43    });44  });45  describe('fc.assert', () => {46    it('Should start from the minimal counterexample given its path', () => {47      const out = fc.check(prop, { seed: seed });48      expect(out.failed).toBe(true);49      let numCalls = 0;50      let numValidCalls = 0;51      let validCallIndex = -1;52      const out2 = fc.check(53        fc.property(propArbitrary, (data) => {54          try {55            expect(data).toEqual(out.counterexample![0]);56            validCallIndex = numCalls;57            ++numValidCalls;58          } catch (err) {59            // noop60          }61          ++numCalls;62          return propCheck(data);63        }),64        { seed: seed, path: out.counterexamplePath! }65      );66      expect(numValidCalls).toEqual(1);67      expect(validCallIndex).toEqual(0);68      expect(out2.numRuns).toEqual(1);69      expect(out2.numShrinks).toEqual(0);70      expect(out2.counterexamplePath).toEqual(out.counterexamplePath);71      expect(out2.counterexample).toEqual(out.counterexample);72    });73    it('Should start from any position in the path', () => {74      const out = fc.check(prop, { seed: seed });75      expect(out.failed).toBe(true);76      const segments = out.counterexamplePath!.split(':');77      for (let idx = 1; idx !== segments.length + 1; ++idx) {78        const p = segments.slice(0, idx).join(':');79        const outMiddlePath = fc.check(prop, { seed: seed, path: p });80        expect(outMiddlePath.numRuns).toEqual(1);81        expect(outMiddlePath.numShrinks).toEqual(out.numShrinks - idx + 1);82        expect(outMiddlePath.counterexamplePath).toEqual(out.counterexamplePath);83        expect(outMiddlePath.counterexample).toEqual(out.counterexample);84      }85    });86    it('Should only execute one test given path for failure and noShrink flag', () => {87      const out = fc.check(prop, { seed: seed });88      expect(out.failed).toBe(true);89      const segments = out.counterexamplePath!.split(':');90      for (let idx = 1; idx !== segments.length + 1; ++idx) {91        const p = segments.slice(0, idx).join(':');92        const outMiddlePath = fc.check(prop, { seed: seed, path: p, endOnFailure: true });93        expect(outMiddlePath.numRuns).toEqual(1);94        expect(outMiddlePath.numShrinks).toEqual(0);95        expect(outMiddlePath.counterexamplePath).toEqual(p);96      }97    });98    it('Should take initial path into account when computing path', () => {99      const out = fc.check(prop, { seed: seed });100      expect(out.failed).toBe(true);101      const segments = out.counterexamplePath!.split(':');102      const playOnIndex = (seed >>> 0) % segments.length; // seed could be <0103      for (let offset = 0; offset !== +segments[playOnIndex]; ++offset) {104        const p = [...segments.slice(0, playOnIndex), offset].join(':');105        const outMiddlePath = fc.check(prop, { seed: seed, path: p });106        expect(outMiddlePath.counterexamplePath).toEqual(out.counterexamplePath);107        expect(outMiddlePath.counterexample).toEqual(out.counterexample);108      }109    });110  });...

Using AI Code Generation

1const fc = require("fast-check");2const { propArbitrary } = require("fast-check-monorepo");3const isOdd = (n) => n % 2 === 1;4const isEven = (n) => n % 2 === 0;5const isOddOrEven = (n) => isOdd(n) || isEven(n);6const isOddAndEven = (n) => isOdd(n) && isEven(n);7const isOddAndOdd = (n) => isOdd(n) && isOdd(n);8const isEvenAndEven = (n) => isEven(n) && isEven(n);9propArbitrary("isOddOrEven", isOddOrEven, fc.integer(), { numRuns: 1000 });10propArbitrary("isOddAndEven", isOddAndEven, fc.integer(), { numRuns: 1000 });11propArbitrary("isOddAndOdd", isOddAndOdd, fc.integer(), { numRuns: 1000 });12propArbitrary("isEvenAndEven", isEvenAndEven, fc.integer(), { numRuns: 1000 });13What is the purpose of the fc.integer() method?14What is the purpose of the fc.string() method?15What is the purpose of the fc.boolean() method?16The purpose of the fc.boolean() method is

Using AI Code Generation

1const fc = require('fast-check');2const {propArbitrary} = require('fast-check-monorepo/lib/check/arbitrary/definition/Arbitrary.js');3const arb = fc.integer();4const arb2 = propArbitrary(arb, (value) => value + 1);5fc.assert(6  fc.property(arb2, (value) => {7    return value > 0;8  })9);10const fc = require('fast-check');11const {propArbitrary} = require('fast-check-monorepo/lib/check/arbitrary/definition/Arbitrary.js');12const arb = fc.integer();13const arb2 = propArbitrary(arb, (value) => value + 1);14fc.assert(15  fc.property(arb2, (value) => {16    return value > 0;17  })18);19const fc = require('fast-check');20const {propArbitrary} = require('fast-check-monorepo/lib/check/arbitrary/definition/Arbitrary.js');21const arb = fc.integer();22const arb2 = propArbitrary(arb, (value) => value + 1);23fc.assert(24  fc.property(arb2, (value) => {25    return value > 0;26  })27);28const fc = require('fast-check');29const {propArbitrary} = require('fast-check-monorepo/lib/check/arbitrary/definition/Arbitrary.js');30const arb = fc.integer();31const arb2 = propArbitrary(arb, (value) => value + 1);32fc.assert(33  fc.property(arb2, (value) => {34    return value > 0;35  })36);37const fc = require('fast-check');38const {propArbitrary} = require('fast-check-monorepo/lib/check/arbitrary/definition

Using AI Code Generation

1const fc = require('fast-check');2const propArbitrary = fc.propArbitrary(fc.nat(), fc.nat(), fc.nat(), (a, b, c) => a + b === c);3fc.assert(propArbitrary, { numRuns: 1000 });4const fc = require('fast-check');5const propArbitrary = fc.propArbitrary(fc.nat(), fc.nat(), fc.nat(), (a, b, c) => a + b === c);6fc.assert(propArbitrary, { numRuns: 1000 });7const fc = require('fast-check');8const propArbitrary = fc.propArbitrary(fc.nat(), fc.nat(), fc.nat(), (a, b, c) => a + b === c);9fc.assert(propArbitrary, { numRuns: 1000 });10const fc = require('fast-check');11const propArbitrary = fc.propArbitrary(fc.nat(), fc.nat(), fc.nat(), (a, b, c) => a + b === c);12fc.assert(propArbitrary, { numRuns: 1000 });13const fc = require('fast-check');14const propArbitrary = fc.propArbitrary(fc.nat(), fc.nat(), fc.nat(), (a, b, c) => a + b === c);15fc.assert(propArbitrary, { numRuns: 1000 });16const fc = require('fast-check');17const propArbitrary = fc.propArbitrary(fc.nat(), fc.nat(), fc.nat(), (a, b, c) => a + b === c);18fc.assert(propArbitrary, { numRuns: 1000 });19const fc = require('fast-check');20const propArbitrary = fc.propArbitrary(fc.nat(), fc.nat

Using AI Code Generation

1const fc = require("fast-check");2const schema = {3  properties: {4    a: { type: "string" },5    b: { type: "number" },6    c: { type: "boolean" },7  },8};9const arb = fc.propArbitrary(schema);10const run = () => {11  const x = arb.sample();12  console.log(x);13};14run();15const fc = require("fast-check");16const Ajv = require("ajv");17const ajv = new Ajv();18const schema = {19  properties: {20    a: { type: "string" },21    b: { type: "number" },22    c: { type: "boolean" },23  },24};25const arb = fc.propArbitrary(schema);26const run = () => {27  const x = arb.sample();28  console.log(x);29  console.log(ajv.validate(schema, x));30};31run();32const fc = require("fast-check");33const Ajv = require("ajv");34const ajvFormats = require("ajv-formats");35const ajv = new Ajv();36ajvFormats(ajv);37const schema = {38  properties: {39    a: { type: "string" },40    b: { type: "number" },41    c: { type: "boolean" },42    d: { type: "string", format: "date-time" },43  },44};45const arb = fc.propArbitrary(schema);46const run = () => {47  const x = arb.sample();48  console.log(x);49  console.log(ajv.validate(schema, x));50};51run();

Using AI Code Generation

1const fc = require("fast-check");2const testArbitrary = fc.propArbitrary(fc.integer(), fc.integer(), (a, b) => {3  return a + b;4});5fc.assert(testArbitrary);6const fc = require("fast-check");7const testArbitrary = fc.propArbitrary(8  fc.integer(),9  fc.integer(),10  fc.integer(),11  (a, b, c) => {12    return a + b + c;13  }14);15fc.assert(testArbitrary);16const fc = require("fast-check");17const testArbitrary = fc.propArbitrary(18  fc.integer(),19  fc.integer(),20  fc.integer(),21  fc.integer(),22  (a, b, c, d) => {23    return a + b + c + d;24  }25);26fc.assert(testArbitrary);27const fc = require("fast-check");28const testArbitrary = fc.propArbitrary(29  fc.integer(),30  fc.integer(),31  fc.integer(),32  fc.integer(),33  fc.integer(),34  (a, b, c, d, e) => {35    return a + b + c + d + e;36  }37);38fc.assert(testArbitrary);39const fc = require("fast-check");40const testArbitrary = fc.propArbitrary(41  fc.integer(),42  fc.integer(),43  fc.integer(),44  fc.integer(),45  fc.integer(),46  fc.integer(),47  (a, b, c, d, e, f) => {48    return a + b + c + d + e + f;49  }50);51fc.assert(testArbitrary);52const fc = require("fast-check");53const testArbitrary = fc.propArbitrary(54  fc.integer(),55  fc.integer(),56  fc.integer(),57  fc.integer(),58  fc.integer(),59  fc.integer(),60  fc.integer(),61  (a, b, c, d, e, f, g) => {

Using AI Code Generation

1const fc = require("fast-check");2const { propArbitrary } = require("fast-check-monorepo");3const isSorted = (arr) => {4  if (arr.length === 0) return true;5  let i = 0;6  while (i < arr.length - 1) {7    if (arr[i] > arr[i + 1]) {8      return false;9    }10    i++;11  }12  return true;13};14const test = () => {15  const test1 = propArbitrary(

Using AI Code Generation

1import {propArbitrary} from 'fast-check';2import {myProp} from './myProp.js';3const myArbitrary = propArbitrary(myProp);4myArbitrary().generate().value;5myArbitrary().generate().value;6myArbitrary().generate().value;7myArbitrary().generate().value;8myArbitrary().generate().value;9myArbitrary().generate().value;

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