How to use propArbitrary method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

ReplayFailures.spec.ts

Source:ReplayFailures.spec.ts Github

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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 });...

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Using AI Code Generation

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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

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Using AI Code Generation

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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

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Using AI Code Generation

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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

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Using AI Code Generation

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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();

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Using AI Code Generation

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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) => {

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Using AI Code Generation

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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(

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Using AI Code Generation

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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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