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How to use onGoingItems2 method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

Tosser.spec.ts

Source:Tosser.spec.ts

1import * as fc from 'fast-check';2import { toss } from '../../../../src/check/runner/Tosser';3import { Stream, stream } from '../../../../src/stream/Stream';4import { Arbitrary } from '../../../../src/check/arbitrary/definition/Arbitrary';5import { IRawProperty } from '../../../../src/check/property/IRawProperty';6import { Random } from '../../../../src/random/generator/Random';7import { Value } from '../../../../src/check/arbitrary/definition/Value';8import * as stubArb from '../../stubs/arbitraries';9import prand from 'pure-rand';10const wrap = <T>(arb: Arbitrary<T>): IRawProperty<T> =>11  new (class implements IRawProperty<T> {12    constructor(readonly arb: Arbitrary<T>) {}13    isAsync = () => false;14    generate = (rng: Random) => new Value(this.arb.generate(rng, undefined).value_, undefined);15    shrink = () => Stream.nil<Value<T>>();16    run = () => ({ error: new Error(), errorMessage: 'failure' });17  })(arb);18describe('Tosser', () => {19  describe('toss', () => {20    it('Should offset the random number generator between calls', () =>21      fc.assert(22        fc.property(fc.integer(), fc.nat(100), (seed, start) => {23          const s = stream(toss(wrap(stubArb.forwardArray(4)), seed, prand.xorshift128plus, []));24          const [g1, g2] = [25            ...s26              .drop(start)27              .take(2)28              .map((f) => f().value),29          ];30          expect(g1).not.toStrictEqual(g2);31          return true;32        })33      ));34    it('Should produce the same sequence for the same seed', () =>35      fc.assert(36        fc.property(fc.integer(), fc.nat(20), (seed, num) => {37          expect([38            ...stream(toss(wrap(stubArb.forward()), seed, prand.xorshift128plus, []))39              .take(num)40              .map((f) => f().value),41          ]).toStrictEqual([42            ...stream(toss(wrap(stubArb.forward()), seed, prand.xorshift128plus, []))43              .take(num)44              .map((f) => f().value),45          ]);46        })47      ));48    it('Should not depend on the order of iteration', () =>49      fc.assert(50        fc.property(fc.integer(), fc.nat(20), (seed, num) => {51          const onGoingItems1 = [...stream(toss(wrap(stubArb.forward()), seed, prand.xorshift128plus, [])).take(num)];52          const onGoingItems2 = [...stream(toss(wrap(stubArb.forward()), seed, prand.xorshift128plus, [])).take(num)];53          expect(54            onGoingItems255              .reverse()56              .map((f) => f().value)57              .reverse()58          ).toStrictEqual(onGoingItems1.map((f) => f().value));59        })60      ));61    it('Should offset toss with the provided examples', () =>62      fc.assert(63        fc.property(fc.integer(), fc.nat(20), fc.array(fc.integer()), (seed, num, examples) => {64          const noExamplesProvided = [65            ...stream(toss(wrap(stubArb.forward()), seed, prand.xorshift128plus, [])).take(num - examples.length),66          ].map((f) => f().value);67          const examplesProvided = [68            ...stream(toss(wrap(stubArb.forward()), seed, prand.xorshift128plus, examples)).take(num),69          ].map((f) => f().value);70          expect([...examples, ...noExamplesProvided].slice(0, num)).toStrictEqual(examplesProvided);71        })72      ));73  });...

Using AI Code Generation

1const fc = require('fast-check');2const { onGoingItems2 } = require('fast-check-monorepo');3const items = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];4const predicate = (item) => item % 2 === 0;5console.log(onGoingItems2(items, predicate));6const fc = require('fast-check');7const { onGoingItems } = require('fast-check');8const items = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];9const predicate = (item) => item % 2 === 0;10console.log(onGoingItems(items, predicate));11function onGoingItems2(items, predicate) {12  return fc.array(fc.nat(items.length - 1)).map((indices) => indices.map((index) => items[index]).filter(predicate));13}14function onGoingItems(items, predicate) {15  return fc.array(fc.nat(items.length - 1)).map((indices) => indices.map((index) => items[index]).filter(predicate));16}17var OnGoingItemsArbitrary_1 = require("./Arbitrary/OnGoingItemsArbitrary");18Object.defineProperty(exports, "onGoingItems2", { enumerable: true, get: function () { return OnGoingItemsArbitrary_1.onGoingItems2; } });19var OnGoingItemsArbitrary_1 = require("./arbitrary/OnGoingItemsArbitrary");20Object.defineProperty(exports, "onGoingItems", { enumerable: true, get: function () { return OnGoingItemsArbitrary_1.onGoingItems; } });

Using AI Code Generation

1import { fc } from 'fast-check';2import { onGoingItems2 } from 'fast-check-monorepo';3fc.assert(4  fc.property(fc.array(fc.integer()), (items) => {5    const result = onGoingItems2(items);6    return result.every((item) => items.includes(item));7  }),8);

Using AI Code Generation

1const fc = require("fast-check");2const { onGoingItems2 } = require("fast-check-monorepo");3const { onGoingItems } = require("fast-check-monorepo");4fc.assert(5  fc.property(fc.array(fc.integer()), (xs) => {6    const ys = onGoingItems(xs);7    return ys.every((y) => xs.includes(y));8  })9);10fc.assert(11  fc.property(fc.array(fc.integer()), (xs) => {12    const ys = onGoingItems2(xs);13    return ys.every((y) => xs.includes(y));14  })15);16fc.assert(17  fc.property(fc.array(fc.integer()), (xs) => {18    const ys = onGoingItems2(xs);19    return ys.every((y) => xs.includes(y));20  })21);22fc.assert(23  fc.property(fc.array(fc.integer()), (xs) => {24    const ys = onGoingItems(xs);25    return ys.every((y) => xs.includes(y));26  })27);28fc.assert(29  fc.property(fc.array(fc.integer()), (xs) => {30    const ys = onGoingItems2(xs);31    return ys.every((y) => xs.includes(y));32  })33);34fc.assert(35  fc.property(fc.array(fc.integer()), (xs) => {36    const ys = onGoingItems2(xs);37    return ys.every((y) => xs.includes(y));38  })39);40fc.assert(41  fc.property(fc.array(fc.integer()), (xs) => {42    const ys = onGoingItems(xs);43    return ys.every((y) => xs.includes(y));44  })45);46fc.assert(47  fc.property(fc.array(fc.integer()), (xs) => {48    const ys = onGoingItems(xs);49    return ys.every((y) => xs.includes(y));50  })51);

Using AI Code Generation

1import {array} from 'fast-check';2import {assert} from 'chai';3describe('ArrayArbitrary', () => {4  describe('onGoingItems2', () => {5    it('should return an array of the same size as the input array', () => {6      const arr = [1, 2, 3, 4, 5];7      const res = array().onGoingItems2(arr);8      assert.equal(res.length, arr.length);9    });10  });11});12{13  "scripts": {14  },

Using AI Code Generation

1const fastCheck = require('fast-check');2const test = () => fastCheck.onGoingItems2();3console.log(test());4const fastCheck = require('fast-check');5const test = () => fastCheck.onGoingItems();6console.log(test());7const fastCheck = require('fast-check');8const test = () => fastCheck.onGoingItems();9console.log(test());10const fastCheck = require('fast-check');11const test = () => fastCheck.onGoingItems();12console.log(test());13const fastCheck = require('fast-check');14const test = () => fastCheck.onGoingItems();15console.log(test());16const fastCheck = require('fast-check');17const test = () => fastCheck.onGoingItems();18console.log(test());19const fastCheck = require('fast-check');20const test = () => fastCheck.onGoingItems();21console.log(test());22const fastCheck = require('fast-check');23const test = () => fastCheck.onGoingItems();24console.log(test());25const fastCheck = require('fast-check');26const test = () => fastCheck.onGoingItems();27console.log(test());28const fastCheck = require('fast-check');29const test = () => fastCheck.onGoingItems();30console.log(test());31const fastCheck = require('fast-check');32const test = () => fastCheck.onGoingItems();33console.log(test());

Using AI Code Generation

1const fc = require("fast-check");2const { onGoingItems2 } = require("fast-check/lib/arbitrary/helpers/OnGoingItems");3fc.assert(4  fc.property(fc.array(fc.integer()), (arr) => {5    const items = onGoingItems2(arr);6    const items2 = onGoingItems2(arr);7    return items2 === items;8  })9);

Using AI Code Generation

1import * as fc from "fast-check";2import * as test from "tape";3test("test", (t) => {4  t.plan(1);5  const arb = fc.array(fc.integer());6  const result = fc.check(fc.property(arb, (arr) => arr.length >= 0));7  t.ok(result.failed);8});9{10  "compilerOptions": {

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