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How to use getNthOrLast method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

ArbitraryAssertions.ts

Source:ArbitraryAssertions.ts

...52          }53          while (g1 !== null && g2 !== null) {54            assertEquality(isEqual, g1.value, g2.value, extraParameters);55            const pos = shrinkPath.next().value;56            g1 = arb.shrink(g1.value_, g1.context).getNthOrLast(pos);57            g2 = arb.shrink(g2.value_, g2.context).getNthOrLast(pos);58          }59          expect(g1).toBe(null);60          expect(g2).toBe(null);61        }62      )63      .afterEach(poisoningAfterEach),64    assertParameters65  );66}67// Optional requirements68// > The following requirements are optional as they do not break the design of fast-check when they are not totally ensured69// > But some of them are really recommended to build valid arbitraries that can be used.70export function assertProduceCorrectValues<T, U = never>(71  arbitraryBuilder: (extraParameters: U) => Arbitrary<T>,72  isCorrect: (v: T, extraParameters: U, arb: Arbitrary<T>) => void | boolean,73  options: {74    extraParameters?: fc.Arbitrary<U>;75    assertParameters?: fc.Parameters<unknown>;76  } = {}77): void {78  const { extraParameters: extra = fc.constant(undefined as unknown as U) as fc.Arbitrary<U>, assertParameters } =79    options;80  fc.assert(81    fc82      .property(83        fc.integer().noShrink(),84        biasFactorArbitrary(),85        fc.infiniteStream(fc.nat({ max: 20 })),86        extra,87        (seed, biasFactor, shrinkPath, extraParameters) => {88          // Arrange89          const arb = arbitraryBuilder(extraParameters);90          // Act / Assert91          let g: Value<T> | null = arb.generate(randomFromSeed(seed), biasFactor);92          while (g !== null) {93            assertCorrectness(isCorrect, g.value, extraParameters, arb);94            const pos = shrinkPath.next().value;95            g = arb.shrink(g.value, g.context).getNthOrLast(pos);96          }97          expect(g).toBe(null);98        }99      )100      .afterEach(poisoningAfterEach),101    assertParameters102  );103}104export function assertGenerateEquivalentTo<T, U = never>(105  arbitraryBuilderA: (extraParameters: U) => Arbitrary<T>,106  arbitraryBuilderB: (extraParameters: U) => Arbitrary<T>,107  options: {108    isEqual?: (v1: T, v2: T, extraParameters: U) => void | boolean;109    isEqualContext?: (c1: unknown, c2: unknown, extraParameters: U) => void | boolean;...

Stream.spec.ts

Source:Stream.spec.ts

...312    it('Should return the nth value of the stream', () => {313      function* g() {314        yield* [42, 5, 43, 8, 19];315      }316      const v = stream(g()).getNthOrLast(2);317      expect(v).toEqual(43);318    });319    it('Should return the last value if the stream is too small', () => {320      function* g() {321        yield* [42, 5, 43, 8, 19];322      }323      const v = stream(g()).getNthOrLast(20);324      expect(v).toEqual(19);325    });326    it('Should be null for empty streams', () => {327      const v = Stream.nil<number>().getNthOrLast(10);328      expect(v).toBe(null);329    });330    it('Should be able to run on infinite streams', () => {331      function* g() {332        let idx = 0;333        while (true) yield idx++;334      }335      const v = stream(g()).getNthOrLast(10);336      expect(v).toEqual(10);337    });338  });...

PathWalker.ts

Source:PathWalker.ts

...13    throw new Error(`Unable to replay, got invalid path=${path}`);14  }15  values = values.drop(segments[0]);16  for (const s of segments.slice(1)) {17    const valueToShrink = values.getNthOrLast(0);18    if (valueToShrink == null) {19      throw new Error(`Unable to replay, got wrong path=${path}`);20    }21    values = shrink(valueToShrink).drop(s);22  }23  return values;...

Using AI Code Generation

1const fc = require('fast-check');2const {getNthOrLast} = require('fast-check-monorepo');3fc.assert(4  fc.property(fc.array(fc.integer()), fc.nat(), (arr, idx) => {5    const res = getNthOrLast(arr, idx);6    const expected = idx < arr.length ? arr[idx] : arr[arr.length - 1];7    return res === expected;8  })9);10const fc = require('fast-check');11const {getNthOrLast} = require('fast-check-monorepo');12fc.assert(13  fc.property(fc.array(fc.integer()), fc.nat(), (arr, idx) => {14    const res = getNthOrLast(arr, idx);15    const expected = idx < arr.length ? arr[idx] : arr[arr.length - 1];16    return res === expected;17  })18);19const fc = require('fast-check');20const {getNthOrLast} = require('fast-check-monorepo');21fc.assert(22  fc.property(fc.array(fc.integer()), fc.nat(), (arr, idx) => {23    const res = getNthOrLast(arr, idx);24    const expected = idx < arr.length ? arr[idx] : arr[arr.length - 1];25    return res === expected;26  })27);28const fc = require('fast-check');29const {getNthOrLast} = require('fast-check-monorepo');30fc.assert(31  fc.property(fc.array(fc.integer()), fc.nat(), (arr, idx) => {32    const res = getNthOrLast(arr, idx);33    const expected = idx < arr.length ? arr[idx] : arr[arr.length - 1];34    return res === expected;35  })36);37const fc = require('fast-check');38const {getNthOrLast} = require('fast-check-monorepo');39fc.assert(40  fc.property(fc.array(fc.integer()), fc.nat(), (arr, idx) =>

Using AI Code Generation

1const fc = require("fast-check");2const { getNthOrLast } = require("fast-check-monorepo");3const array = [1, 2, 3, 4, 5];4const result = getNthOrLast(array, 2);5console.log(result);6const fc = require("fast-check");7const { getNthOrLast } = require("fast-check-monorepo");8const array = [1, 2, 3, 4, 5];9const result = getNthOrLast(array, 2);10console.log(result);11const fc = require("fast-check");12const { getNthOrLast } = require("fast-check-monorepo");13const array = [1, 2, 3, 4, 5];14const result = getNthOrLast(array, 2);15console.log(result);16const fc = require("fast-check");17const { getNthOrLast } = require("fast-check-monorepo");18const array = [1, 2, 3, 4, 5];19const result = getNthOrLast(array, 2);20console.log(result);21const fc = require("fast-check");22const { getNthOrLast } = require("fast-check-monorepo");23const array = [1, 2, 3, 4, 5];24const result = getNthOrLast(array, 2);25console.log(result);26const fc = require("fast-check");27const { getNthOrLast } = require("fast-check-monorepo");28const array = [1, 2, 3, 4, 5];29const result = getNthOrLast(array, 2);30console.log(result);

Using AI Code Generation

1import { getNthOrLast } from 'fast-check-monorepo';2const getNthOrLast = require('fast-check-monorepo').getNthOrLast;3const getNthOrLast = require('fast-check-monorepo').getNthOrLast;4import { getNthOrLast } from 'fast-check-monorepo';5import { getNthOrLast } from 'fast-check-monorepo';6const getNthOrLast = require('fast-check-monorepo').getNthOrLast;7const getNthOrLast = require('fast-check-monorepo').getNthOrLast;8const getNthOrLast = require('fast-check-monorepo').getNthOrLast;9const getNthOrLast = require('fast-check-monorepo').getNthOrLast;10const getNthOrLast = require('fast-check-monorepo').getNthOrLast;11const getNthOrLast = require('fast-check-monorepo').getNthOrLast;12const getNthOrLast = require('fast-check-monorepo').getNthOrLast;13const getNthOrLast = require('fast-check-monorepo').getNthOrLast;14const getNthOrLast = require('fast-check-monorepo').getNthOrLast;

Using AI Code Generation

1const fc = require('fast-check');2const {getNthOrLast} = require('fast-check/lib/check/arbitrary/ArrayArbitrary');3const myArray = [1,2,3,4,5,6,7,8,9,10];4const myNth = 3;5const myNthOrLast = getNthOrLast(myNth, myArray);6console.log(myNthOrLast);7const fc = require('fast-check');8const {getNthOrLast} = require('fast-check/lib/check/arbitrary/ArrayArbitrary');9const myArray = [1,2,3,4,5,6,7,8,9,10];10const myNth = 11;11const myNthOrLast = getNthOrLast(myNth, myArray);12console.log(myNthOrLast);13const fc = require('fast-check');14const {getNthOrLast} = require('fast-check/lib/check/arbitrary/ArrayArbitrary');15const myArray = [1,2,3,4,5,6,7,8,9,10];16const myNth = -1;17const myNthOrLast = getNthOrLast(myNth, myArray);18console.log(myNthOrLast);19const fc = require('fast-check');20const {getNthOrLast} = require('fast-check/lib/check/arbitrary/ArrayArbitrary');21const myArray = [1,2,3,4,5,6,7,8,9,10];22const myNth = -2;23const myNthOrLast = getNthOrLast(myNth, myArray);24console.log(myNthOrLast);25const fc = require('fast-check');26const {getNthOrLast} = require

Using AI Code Generation

1const fc = require('fast-check');2const assert = require('assert');3const { getNthOrLast } = require('fast-check/lib/check/arbitrary/ArrayArbitrary');4const testArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];5describe('getNthOrLast', () => {6  it('should return 1st element from array', () => {7    const result = getNthOrLast(0, testArray);8    assert.strictEqual(result, 1);9  });10  it('should return 5th element from array', () => {11    const result = getNthOrLast(4, testArray);12    assert.strictEqual(result, 5);13  });14  it('should return last element from array', () => {15    const result = getNthOrLast(9, testArray);16    assert.strictEqual(result, 10);17  });18});19{20  "scripts": {21  },22  "dependencies": {23  }24}25{26}27{28  "parserOptions": {29  },30  "env": {31  },32  "rules": {33  }34}35{

Using AI Code Generation

1const fc = require('fast-check');2const { getNthOrLast } = require('../src');3const myArb = fc.integer(0, 10);4fc.assert(fc.property(myArb, (n) => {5  return getNthOrLast(n) === n;6}));7const fc = require('fast-check');8const { getNthOrLast } = require('../src');9const myArb = fc.integer(0, 10);10fc.assert(fc.property(myArb, (n) => {11  return getNthOrLast(n) === n;12}));13const fc = require('fast-check');14const { getNthOrLast } = require('../src');15const myArb = fc.integer(0, 10);16fc.assert(fc.property(myArb, (n) => {17  return getNthOrLast(n) === n;18}));19const fc = require('fast-check');20const { getNthOrLast } = require('../src');21const myArb = fc.integer(0, 10);22fc.assert(fc.property(myArb, (n) => {23  return getNthOrLast(n) === n;24}));25const fc = require('fast-check');26const { getNthOrLast } = require('../src');27const myArb = fc.integer(0, 10);28fc.assert(fc.property(myArb, (n) => {29  return getNthOrLast(n) === n;30}));31const fc = require('fast-check');32const { getNthOrLast } = require('../src');33const myArb = fc.integer(0, 10);34fc.assert(fc.property(myArb, (n) => {35  return getNthOrLast(n) === n;36}));

Using AI Code Generation

1const fc = require('fast-check');2const {getNthOrLast} = require('fast-check-monorepo');3const arb = fc.array(fc.integer(), 1, 10);4fc.assert(5  fc.property(arb, (arr) => {6    const n = arr.length;7    return getNthOrLast(arr, 3) === arr[3] || getNthOrLast(arr, 3) === arr[n-1];8  })9);

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