How to use strictArbs method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

arbitrary.js

Source:arbitrary.js

1/* @flow weak */2"use strict";3var arbitraryAssert = require("./arbitraryAssert.js");4var arbitraryBless = require("./arbitraryBless.js");5var array = require("./array.js");6var assert = require("assert");7var dict = require("./dict.js");8var generator = require("./generator.js");9var json = require("./json.js");10var pair = require("./pair.js");11var show = require("./show.js");12var shrink = require("./shrink.js");13var utils = require("./utils.js");14/**15  ### Arbitrary combinators16*/17/**18  - `nonshrink(arb: arbitrary a): arbitrary a`19      Non shrinkable version of arbitrary `arb`.20*/21function nonshrink(arb) {22  arb = utils.force(arb);23  return arbitraryBless({24    generator: arb.generator,25    shrink: shrink.noop,26    show: arb.show,27  });28}29/**30  - `unit: arbitrary ()`31*/32var unit = arbitraryBless({33  generator: generator.unit,34  shrink: shrink.noop,35  show: show.def,36});37/**38  - `either(arbA: arbitrary a, arbB : arbitrary b): arbitrary (either a b)`39*/40function either(a, b) {41  a = utils.force(a || json.json);42  b = utils.force(b || json.json);43  arbitraryAssert(a);44  arbitraryAssert(b);45  return arbitraryBless({46    generator: generator.either(a.generator, b.generator),47    shrink: shrink.either(a.shrink, b.shrink),48    show: show.either(a.show, b.show),49  });50}51/**52  - `pair(arbA: arbitrary a, arbB : arbitrary b): arbitrary (pair a b)`53      If not specified `a` and `b` are equal to `value()`.54*/55function pairArb(a, b) {56  return pair.pair(a || json.json, b || json.json);57}58/**59  - `tuple(arbs: (arbitrary a, arbitrary b...)): arbitrary (a, b...)`60*/61function tuple(arbs) {62  arbs = arbs.map(utils.force);63  return arbitraryBless({64    generator: generator.tuple(utils.pluck(arbs, "generator")),65    shrink: shrink.tuple(utils.pluck(arbs, "shrink")),66    show: show.tuple(utils.pluck(arbs, "show")),67  });68}69/**70  - `sum(arbs: (arbitrary a, arbitrary b...)): arbitrary (a | b ...)`71*/72function sum(arbs) {73  arbs = arbs.map(utils.force);74  return arbitraryBless({75    generator: generator.sum(utils.pluck(arbs, "generator")),76    shrink: shrink.sum(utils.pluck(arbs, "shrink")),77    show: show.sum(utils.pluck(arbs, "show")),78  });79}80/**81  - `dict(arb: arbitrary a): arbitrary (dict a)`82      Generates a JavaScript object with properties of type `A`.83*/84function dictArb(arb) {85  return dict.arbitrary(arb || json.json);86}87/**88  - `array(arb: arbitrary a): arbitrary (array a)`89*/90function arrayArb(arb) {91  return array.array(arb || json.json);92}93/**94  - `nearray(arb: arbitrary a): arbitrary (array a)`95*/96function nearrayArb(arb) {97  return array.nearray(arb || json.json);98}99/**100  - `json: arbitrary json`101       JavaScript Objects: boolean, number, string, null, array of `json` values or object with `json` values.102*/103var jsonArb = json.json;104/**105  - `oneof(gs : array (arbitrary a)...) : arbitrary a`106      Randomly uses one of the given arbitraries.107*/108function oneof() {109  assert(arguments.length !== 0, "oneof: at least one parameter expected");110  // TODO: write this in more functional way111  var generators = [];112  var append = function (a) {113    generators.push(utils.force(a).generator);114  };115  for (var i = 0; i < arguments.length; i++) {116    var arg = arguments[i];117    if (utils.isArray(arg)) {118      arg.forEach(append);119    } else {120      append(arg);121    }122  }123  return arbitraryBless({124    generator: generator.oneof(generators),125    // TODO: make shrink126    shrink: shrink.noop,127    show: show.def,128  });129}130// Return a lazy arbitrary that delegates to another arbitrary at its131// 'strict' property. An arbitrary must be assigned to that property before132// this arbitrary can generate anything.133function lazyArbitrary() {134  var arb = {};135  // This function must be pure because it will not be called with136  // meaningful context.137  arb.generator = generator.bless(function (size) {138    return arb.strict.generator(size);139  });140  arb.shrink = shrink.noop;141  arb.show = show.def;142  arb = arbitraryBless(arb);143  return arb;144}145/**146  - ```js147    letrec(148      (tie: key -> (arbitrary a | arbitrary b | ...))149      -> { key: arbitrary a, key: arbitrary b, ... }):150    { key: arbitrary a, key: arbitrary b, ... }151    ```152    Mutually recursive definitions. Every reference to a sibling arbitrary153    should go through the `tie` function.154    ```js155    { arb1, arb2 } = jsc.letrec(function (tie) {156      return {157        arb1: jsc.tuple(jsc.int, jsc.oneof(jsc.const(null), tie("arb2"))),158        arb2: jsc.tuple(jsc.bool, jsc.oneof(jsc.const(null), tie("arb1"))),159      }160    });161    ```162*/163function letrec(definition) {164  // We must use a lazy dictionary because we do not know the key set165  // before calling the definition.166  var lazyArbs = {};167  function tie(name) {168    if (!lazyArbs.hasOwnProperty(name)) {169      lazyArbs[name] = lazyArbitrary();170    }171    return lazyArbs[name];172  }173  var strictArbs = definition(tie);174  Object.keys(lazyArbs).forEach(function (key) {175    var strictArb = strictArbs[key];176    if (!strictArb) {177      throw new Error("undefined lazy arbitrary: " + key);178    }179    lazyArbs[key].strict = strictArb;180  });181  return strictArbs;182}183function recursive(arbZ, arbS) {184  var genZ = arbZ.generator;185  var genS = function (recGen) {186    var recArb = arbitraryBless({187      generator: recGen,188      shrink: shrink.noop,189      show: show.def,190    });191    return arbS(recArb).generator;192  };193  var gen = generator.recursive(genZ, genS);194  return arbitraryBless({195    generator: gen,196    shrink: shrink.noop,197    show: show.def,198  });199}200module.exports = {201  nonshrink: nonshrink,202  pair: pairArb,203  either: either,204  unit: unit,205  dict: dictArb,206  json: jsonArb,207  nearray: nearrayArb,208  array: arrayArb,209  tuple: tuple,210  sum: sum,211  oneof: oneof,212  recursive: recursive,213  letrec: letrec,...

letrec.ts

Source:letrec.ts

1import { LazyArbitrary } from './_internals/LazyArbitrary';2import { Arbitrary } from '../check/arbitrary/definition/Arbitrary';3import { safeHasOwnProperty } from '../utils/globals';4const safeObjectCreate = Object.create;5/**6 * Type of the value produced by {@link letrec}7 * @remarks Since 3.0.08 * @public9 */10export type LetrecValue<T> = {11  [K in keyof T]: Arbitrary<T[K]>;12};13/**14 * Strongly typed type for the `tie` function passed by {@link letrec} to the `builder` function we pass to it.15 * You may want also want to use its loosely typed version {@link LetrecLooselyTypedTie}.16 *17 * @remarks Since 3.0.018 * @public19 */20export interface LetrecTypedTie<T> {21  <K extends keyof T>(key: K): Arbitrary<T[K]>;22  (key: string): Arbitrary<unknown>;23}24/**25 * Strongly typed type for the `builder` function passed to {@link letrec}.26 * You may want also want to use its loosely typed version {@link LetrecLooselyTypedBuilder}.27 *28 * @remarks Since 3.0.029 * @public30 */31export type LetrecTypedBuilder<T> = (tie: LetrecTypedTie<T>) => LetrecValue<T>;32/**33 * Loosely typed type for the `tie` function passed by {@link letrec} to the `builder` function we pass to it.34 * You may want also want to use its strongly typed version {@link LetrecTypedTie}.35 *36 * @remarks Since 3.0.037 * @public38 */39export type LetrecLooselyTypedTie = (key: string) => Arbitrary<unknown>;40/**41 * Loosely typed type for the `builder` function passed to {@link letrec}.42 * You may want also want to use its strongly typed version {@link LetrecTypedBuilder}.43 *44 * @remarks Since 3.0.045 * @public46 */47export type LetrecLooselyTypedBuilder<T> = (tie: LetrecLooselyTypedTie) => LetrecValue<T>;48/**49 * For mutually recursive types50 *51 * @example52 * ```typescript53 * type Leaf = number;54 * type Node = [Tree, Tree];55 * type Tree = Node | Leaf;56 * const { tree } = fc.letrec<{ tree: Tree, node: Node, leaf: Leaf }>(tie => ({57 *   tree: fc.oneof({depthSize: 'small'}, tie('leaf'), tie('node')),58 *   node: fc.tuple(tie('tree'), tie('tree')),59 *   leaf: fc.nat()60 * }));61 * // tree is 50% of node, 50% of leaf62 * // the ratio goes in favor of leaves as we go deeper in the tree (thanks to depthSize)63 * ```64 *65 * @param builder - Arbitraries builder based on themselves (through `tie`)66 *67 * @remarks Since 1.16.068 * @public69 */70export function letrec<T>(builder: T extends Record<string, unknown> ? LetrecTypedBuilder<T> : never): LetrecValue<T>;71/**72 * For mutually recursive types73 *74 * @example75 * ```typescript76 * const { tree } = fc.letrec(tie => ({77 *   tree: fc.oneof({depthSize: 'small'}, tie('leaf'), tie('node')),78 *   node: fc.tuple(tie('tree'), tie('tree')),79 *   leaf: fc.nat()80 * }));81 * // tree is 50% of node, 50% of leaf82 * // the ratio goes in favor of leaves as we go deeper in the tree (thanks to depthSize)83 * ```84 *85 * @param builder - Arbitraries builder based on themselves (through `tie`)86 *87 * @remarks Since 1.16.088 * @public89 */90export function letrec<T>(builder: LetrecLooselyTypedBuilder<T>): LetrecValue<T>;91// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types92export function letrec<T>(builder: LetrecLooselyTypedBuilder<T> | LetrecTypedBuilder<T>): LetrecValue<T> {93  const lazyArbs: { [K in keyof T]?: LazyArbitrary<unknown> } = safeObjectCreate(null);94  const tie = (key: keyof T): Arbitrary<any> => {95    if (!safeHasOwnProperty(lazyArbs, key)) {96      // Call to hasOwnProperty ensures that the property key will be defined97      lazyArbs[key] = new LazyArbitrary(String(key));98    }99    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion100    return lazyArbs[key]!;101  };102  const strictArbs = builder(tie as any);103  for (const key in strictArbs) {104    if (!safeHasOwnProperty(strictArbs, key)) {105      // Prevents accidental iteration over properties inherited from an objectâs prototype106      continue;107    }108    const lazyAtKey: LazyArbitrary<unknown> | undefined = lazyArbs[key];109    const lazyArb = lazyAtKey !== undefined ? lazyAtKey : new LazyArbitrary(key);110    lazyArb.underlying = strictArbs[key];111    lazyArbs[key] = lazyArb;112  }113  return strictArbs;...

Using AI Code Generation

1const { strictArbs } = require('fast-check');2const { strictArbs } = require('fast-check');3const { strictArbs } = require('fast-check');4const { strictArbs } = require('fast-check');5const { strictArbs } = require('fast-check');6const { strictArbs } = require('fast-check');7const { strictArbs } = require('fast-check');8const { strictArbs } = require('fast-check');9const { strictArbs } = require('fast-check');10const { strictArbs } = require('fast-check');11const { strictArbs } = require('fast-check');12const { strictArbs } = require('fast-check');13const { strictArbs } = require('fast-check');14const { strictArbs } = require('fast-check');15const { strictArbs } = require('fast-check');

Using AI Code Generation

1const { strictArbs } = require("fast-check");2const { string } = strictArbs;3const fc = require("fast-check");4const { string } = fc;5const { string } = require("fast-check-monorepo");6const { string } = require("fast-check-monorepo");7const fc = require("fast-check");8const { string } = fc;9const { string } = require("fast-check-monorepo");10const fc = require("fast-check");11const { string } = fc;12const { string } = require("fast-check-monorepo");13const fc = require("fast-check");14const { string } = fc;15const { string } = require("fast-check-monorepo");16const fc = require("fast-check");17const { string } = fc;18const { string } = require("fast-check-monorepo");19const fc = require("fast-check");20const { string } = fc;21const { string } = require("fast-check-monorepo");22const fc = require("fast-check");23const { string } = fc;24const { string } = require("fast-check-monorepo");25const fc = require("fast-check");26const { string } = fc;27const { string } = require("fast-check-monorepo");28const fc = require("fast-check");29const { string } = fc;30const { string } = require("fast-check-monorepo");31const fc = require("fast-check");32const { string } = fc;33const { string } = require("fast-check-monorepo");

Using AI Code Generation

1const { strictArbs } = require('fast-check')2const { oneof } = strictArbs3const arb = oneof(4    strictArbs.string(),5    strictArbs.number(),6    strictArbs.boolean(),7    strictArbs.constantFrom('a', 'b', 'c'),8    strictArbs.constantFrom(1, 2, 3),9    strictArbs.constantFrom(true, false),10    strictArbs.constantFrom('a', 1, true),11    strictArbs.constantFrom('a', 1, true, 'b', 2, false, 'c', 3, true),12    strictArbs.constantFrom('a', 1, true, 'b', 2, false, 'c', 3, true, 'd', 4, false),13    strictArbs.constantFrom('a', 1, true, 'b', 2, false, 'c', 3, true, 'd', 4, false, 'e', 5, true),14    strictArbs.constantFrom('a', 1, true, 'b', 2, false, 'c', 3, true, 'd', 4, false, 'e', 5, true, 'f', 6, false),15    strictArbs.constantFrom('a', 1, true, 'b', 2, false, 'c', 3, true, 'd', 4, false, 'e', 5, true, 'f', 6, false, 'g', 7, true),16    strictArbs.constantFrom('a', 1, true, 'b', 2, false, 'c', 3, true, 'd', 4, false, 'e', 5, true, 'f', 6, false, 'g', 7, true, 'h', 8, false),17    strictArbs.constantFrom('a', 1, true, 'b', 2, false, 'c', 3, true, 'd', 4, false, 'e', 5, true, 'f', 6, false, 'g', 7, true, 'h', 8, false, 'i', 9, true),18    strictArbs.constantFrom('a', 1, true, 'b', 2,

Using AI Code Generation

1const { strictArbs } = require("fast-check-monorepo");2const { string, number, record, array } = strictArbs;3const arb = record({ foo: string(), bar: number(), baz: array(string()) });4const sample = arb.sample();5console.log(sample);6const { strictArbs } = require("fast-check");7const { string, number, record, array } = strictArbs;8const arb = record({ foo: string(), bar: number(), baz: array(string()) });9const sample = arb.sample();10console.log(sample);

Using AI Code Generation

1const fc = require('fast-check');2const { strictArbs } = require('fast-check-monorepo');3const arb = strictArbs(10, 1, 100);4fc.assert(fc.property(arb, (arr) => {5    return arr.length === 10;6}));

Using AI Code Generation

1const { strictArbs } = require('fast-check-monorepo')2const arbs = strictArbs()3const arb = arbs.object({ a: arbs.number(), b: arbs.string() })4const { a, b } = arb.generate()5console.log({ a, b })6console.log({ a, b })7console.log({ a, b })8console.log({ a, b })

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