Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

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": {

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.