How to use mapToConstantEntry method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

Poisoning.spec.ts

Source:Poisoning.spec.ts Github

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...81 { name: 'constant', arbitraryBuilder: () => fc.constant(1) },82 { name: 'constantFrom', arbitraryBuilder: () => fc.constantFrom(1, 2, 3) },83 { name: 'option', arbitraryBuilder: () => fc.option(noop()) },84 { name: 'oneof', arbitraryBuilder: () => fc.oneof(noop(), noop()) },85 { name: 'mapToConstant', arbitraryBuilder: () => fc.mapToConstant(mapToConstantEntry(0), mapToConstantEntry(100)) },86 { name: 'clone', arbitraryBuilder: () => fc.clone(noop(), 2) },87 // : Array88 { name: 'tuple', arbitraryBuilder: () => fc.tuple(noop(), noop()) },89 { name: 'array', arbitraryBuilder: () => fc.array(noop()) },90 { name: 'uniqueArray', arbitraryBuilder: () => fc.uniqueArray(basic()) },91 { name: 'uniqueArray::SameValueZero', arbitraryBuilder: () => fc.uniqueArray(basic(), CmpSameValueZero) },92 { name: 'uniqueArray::IsStrictlyEqual', arbitraryBuilder: () => fc.uniqueArray(basic(), CmpIsStrictlyEqual) },93 { name: 'uniqueArray::Custom', arbitraryBuilder: () => fc.uniqueArray(basic(), { comparator: (a, b) => a === b }) },94 { name: 'subarray', arbitraryBuilder: () => fc.subarray([1, 2, 3, 4, 5]) },95 { name: 'shuffledSubarray', arbitraryBuilder: () => fc.shuffledSubarray([1, 2, 3, 4, 5]) },96 { name: 'sparseArray', arbitraryBuilder: () => fc.sparseArray(noop()) },97 { name: 'infiniteStream', arbitraryBuilder: () => fc.infiniteStream(noop()) },98 // : Object99 { name: 'dictionary', arbitraryBuilder: () => fc.dictionary(basic().map(String), noop()) },100 { name: 'record', arbitraryBuilder: () => fc.record({ a: noop(), b: noop() }) },101 { name: 'record::requiredKeys', arbitraryBuilder: () => fc.record({ a: noop(), b: noop() }, { requiredKeys: [] }) },102 // related to fc.double: pure-rand is not resilient to prototype poisoning occuring on Array103 //{ name: 'object', arbitraryBuilder: () => fc.object() },104 //{ name: 'jsonValue', arbitraryBuilder: () => fc.jsonValue() },105 //{ name: 'unicodeJsonValue', arbitraryBuilder: () => fc.unicodeJsonValue() },106 //{ name: 'anything', arbitraryBuilder: () => fc.anything() },107 // : Function108 { name: 'compareBooleanFunc', arbitraryBuilder: () => fc.compareBooleanFunc() },109 { name: 'compareFunc', arbitraryBuilder: () => fc.compareFunc() },110 { name: 'func', arbitraryBuilder: () => fc.func(noop()) },111 // : Recursive structures112 { name: 'letrec', arbitraryBuilder: () => letrecTree() },113 { name: 'memo', arbitraryBuilder: () => memoTree() },114 ])('should not be impacted by altered globals when using $name', ({ arbitraryBuilder }) => {115 // Arrange116 let runId = 0;117 let failedOnce = false;118 const resultStream = fc.sample(fc.infiniteStream(fc.boolean()), { seed, numRuns: 1 })[0];119 const testResult = (): boolean => {120 if (++runId === 100 && !failedOnce) {121 // Force a failure for the 100th execution if we never encountered any before122 // Otherwise it would make fc.assert green as the property never failed123 return false;124 }125 const ret = resultStream.next().value;126 failedOnce = failedOnce || !ret;127 return ret;128 };129 dropMainGlobals();130 // Act131 let interceptedException: unknown = undefined;132 try {133 fc.assert(134 fc.property(arbitraryBuilder(), (_v) => testResult()),135 { seed }136 );137 } catch (err) {138 interceptedException = err;139 }140 // Assert141 restoreGlobals(); // Restore globals before running real checks142 expect(interceptedException).toBeDefined();143 expect(interceptedException).toBeInstanceOf(Error);144 expect((interceptedException as Error).message).toMatch(/Property failed after/);145 });146});147// Helpers148const capturedGlobalThis = globalThis;149const own = Object.getOwnPropertyNames;150function dropAllFromObj(obj: unknown): void {151 for (const k of own(obj)) {152 // We need to keep String for Jest to be able to run properly153 // and Object because of some code generated by TypeScript in the cjs version154 if (obj === capturedGlobalThis && (k === 'String' || k === 'Object')) {155 continue;156 }157 try {158 // eslint-disable-next-line @typescript-eslint/ban-ts-comment159 // @ts-ignore160 delete obj[k];161 } catch (err) {162 // Object.prototype cannot be deleted, and others might too163 }164 }165}166function dropMainGlobals(): void {167 const mainGlobals = [168 Object,169 Function,170 Array,171 Number,172 Boolean,173 String,174 Symbol,175 Date,176 Promise,177 RegExp,178 Error,179 Map,180 BigInt,181 Set,182 WeakMap,183 WeakSet,184 WeakRef,185 FinalizationRegistry,186 Proxy,187 Reflect,188 Buffer,189 ArrayBuffer,190 SharedArrayBuffer,191 Uint8Array,192 Int8Array,193 Uint16Array,194 Int16Array,195 Uint32Array,196 Int32Array,197 Float32Array,198 Float64Array,199 Uint8ClampedArray,200 BigUint64Array,201 BigInt64Array,202 DataView,203 TextEncoder,204 TextDecoder,205 AbortController,206 AbortSignal,207 EventTarget,208 Event,209 MessageChannel,210 MessagePort,211 MessageEvent,212 //URL,213 URLSearchParams,214 JSON,215 Math,216 Intl,217 globalThis,218 ];219 for (const mainGlobal of mainGlobals) {220 if ('prototype' in mainGlobal) {221 dropAllFromObj(mainGlobal.prototype);222 }223 dropAllFromObj(mainGlobal);224 }225}226class NoopArbitrary extends fc.Arbitrary<number> {227 generate(_mrng: fc.Random, _biasFactor: number | undefined): fc.Value<number> {228 return new fc.Value<number>(0, undefined);229 }230 canShrinkWithoutContext(value: unknown): value is number {231 return false;232 }233 shrink(value: number, _context: unknown): fc.Stream<fc.Value<number>> {234 if (value > 5) {235 return fc.Stream.nil();236 }237 return fc.Stream.of(238 new fc.Value<number>(value + 1, undefined), // emulate a shrinker using bare minimal primitives239 new fc.Value<number>(value + 2, undefined),240 new fc.Value<number>(value + 3, undefined)241 );242 }243}244function noop() {245 // Always returns the same value and does not use random number instance.246 // The aim of this arbitrary is to control that we can execute the runner and property even in poisoned context.247 return new NoopArbitrary();248}249class BasicArbitrary extends fc.Arbitrary<number> {250 generate(mrng: fc.Random, _biasFactor: number | undefined): fc.Value<number> {251 return new fc.Value<number>(mrng.nextInt() % 1000, undefined);252 }253 canShrinkWithoutContext(value: unknown): value is number {254 return false;255 }256 shrink(value: number, _context: unknown): fc.Stream<fc.Value<number>> {257 if (value < 10) {258 return fc.Stream.nil();259 }260 return fc.Stream.of(261 new fc.Value<number>((3 * value) / 4, undefined), // emulate a shrinker using bare minimal primitives262 new fc.Value<number>(value / 2, undefined)263 );264 }265}266function basic() {267 // Directly extracting values out of mrng without too many treatments268 return new BasicArbitrary();269}270function mapToConstantEntry(offset: number) {271 return { num: 10, build: (v: number) => v + offset };272}273const CmpSameValueZero = { comparator: 'SameValueZero' as const };274const CmpIsStrictlyEqual = { comparator: 'IsStrictlyEqual' as const };275type Leaf = number;276type Node = { left: Tree; right: Tree };277type Tree = Leaf | Node;278function letrecTree() {279 return fc.letrec((tie) => ({280 tree: fc.oneof(tie('leaf'), tie('node')),281 node: fc.record({ left: tie('tree'), right: tie('tree') }),282 leaf: fc.nat(),283 })).tree;284}...

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Using AI Code Generation

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1const fc = require("fast-check");2const { mapToConstantEntry } = require("fast-check-monorepo");3const myMap = new Map();4myMap.set("a", 1);5myMap.set("b", 2);6myMap.set("c", 3);7const arb = mapToConstantEntry(myMap);8const result = fc.sample(arb, 1);9console.log(result);10const fc = require("fast-check");11const { mapToConstantEntry } = require("fast-check-monorepo");12const myMap = new Map();13myMap.set("a", 1);14myMap.set("b", 2);15myMap.set("c", 3);16const arb = mapToConstantEntry(myMap);17const result = fc.sample(arb, 1);18console.log(result);19const fc = require("fast-check");20const { mapToConstantEntry } = require("fast-check-monorepo");21const myMap = new Map();22myMap.set("a", 1);23myMap.set("b", 2);24myMap.set("c", 3);25const arb = mapToConstantEntry(myMap);26const result = fc.sample(arb, 1);27console.log(result);28const fc = require("fast-check");29const { mapToConstantEntry } = require("fast-check-monorepo");30const myMap = new Map();31myMap.set("a", 1);32myMap.set("b", 2);33myMap.set("c", 3);34const arb = mapToConstantEntry(myMap);35const result = fc.sample(arb, 1

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Using AI Code Generation

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1const { mapToConstantEntry } = require('fast-check');2const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary');3const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary.js');4const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary.js');5const { mapToConstantEntry } = require('fast-check');6const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary');7const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary.js');8const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary.js');9const { mapToConstantEntry } = require('fast-check');10const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary');11const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary.js');12const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary.js');13const { mapToConstantEntry } = require('fast-check');14const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary');15const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary.js');16const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary.js');17const { mapToConstantEntry } = require('fast-check');18const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary');19const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary.js');20const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary.js');

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Using AI Code Generation

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1const fc = require('fast-check');2const { mapToConstantEntry } = require('fast-check/lib/check/arbitrary/MapArbitrary.js');3const mapArb = fc.map(fc.string(), fc.integer(), { maxLength: 5 });4const constantEntryArb = mapToConstantEntry(mapArb);5fc.assert(6 fc.property(constantEntryArb, ([key, value]) => {7 console.log(`key: ${key}, value: ${value}`);8 return true;9 })10);

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Using AI Code Generation

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1const { mapToConstantEntry } = require('fast-check');2const fc = require('fast-check');3const myGen = fc.array(fc.integer(1, 100), { minLength: 1 });4const myGen2 = fc.array(fc.integer(1, 100), { minLength: 1 });5const myGen3 = fc.array(fc.integer(1, 100), { minLength: 1 });6const myGen4 = fc.array(fc.integer(1, 100), { minLength: 1 });7const myGen5 = fc.array(fc.integer(1, 100), { minLength: 1 });8const myGen6 = fc.array(fc.integer(1, 100), { minLength: 1 });9const myGen7 = fc.array(fc.integer(1, 100), { minLength: 1 });10const myGen8 = fc.array(fc.integer(1, 100), { minLength: 1 });11const myGen9 = fc.array(fc.integer(1, 100), { minLength: 1 });12const myGen10 = fc.array(fc.integer(1, 100), { minLength: 1 });13const myGen11 = fc.array(fc.integer(1, 100), { minLength: 1 });14const myGen12 = fc.array(fc.integer(1, 100), { minLength: 1 });15const myGen13 = fc.array(fc.integer(1, 100), { minLength: 1 });16const myGen14 = fc.array(fc.integer(1, 100), { minLength: 1 });17const myGen15 = fc.array(fc.integer(1, 100), { minLength: 1 });18const myGen16 = fc.array(fc.integer(1, 100), { minLength: 1 });19const myGen17 = fc.array(fc.integer(1, 100), { minLength: 1 });20const myGen18 = fc.array(fc.integer(1, 100), { minLength: 1 });21const myGen19 = fc.array(fc.integer(1, 100), { minLength: 1 });22const myGen20 = fc.array(fc.integer(1, 100), { minLength: 1 });23const myGen21 = fc.array(fc.integer(1, 100), {

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Using AI Code Generation

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1const { mapToConstantEntry } = require("fast-check-monorepo");2const fc = require("fast-check");3const { constant } = fc;4const map = new Map();5map.set("a", "apple");6map.set("b", "banana");7map.set("c", "carrot");8const arb = constant(map).map(mapToConstantEntry);9fc.assert(10 fc.property(arb, ([key, value]) => {11 expect(map.get(key)).toBe(value);12 })13);

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Using AI Code Generation

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1const mapToConstantEntry = require('fast-check/lib/check/arbitrary/MapToConstantEntryArbitrary').mapToConstantEntry;2const myArray = mapToConstantEntry('foo', 'bar');3console.log(myArray);4const myArray = [{ foo: "bar" }, { foo: "bar" }, { foo: "bar" }, { foo: "bar" }, { foo: "bar" }];5console.log(myArray);6const myArray = [{ foo: "bar" }, { foo: "bar" }, { foo: "bar" }, { foo: "bar" }, { foo: "bar" }];7console.log(myArray);8const myArray = [{ foo: "bar" }, { foo: "bar" }, { foo: "bar" }, { foo: "bar" }, { foo: "bar" }];9console.log(myArray);10const myArray = [{ foo: "bar" }, { foo: "bar" }, { foo: "bar" }, { foo: "bar" }, { foo: "bar" }];11console.log(myArray);

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Using AI Code Generation

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1const { mapToConstantEntry } = require('fast-check');2const { isEqual } = require('lodash');3const map1 = mapToConstantEntry();4const map2 = new Map();5map2.set(map1.keys().next().value, map1.values().next().value);6const map3 = mapToConstantEntry();7const map4 = new Map();8map4.set(map3.keys().next().value, map3.values().next().value);9const map5 = mapToConstantEntry();10const map6 = new Map();11map6.set(map5.keys().next().value, map5.values().next().value);12const map7 = mapToConstantEntry();13const map8 = new Map();14map8.set(map7.keys().next().value, map7.values().next().value);15const map9 = mapToConstantEntry();16const map10 = new Map();17map10.set(map9.keys().next().value, map9.values().next().value);18const map11 = mapToConstantEntry();19const map12 = new Map();20map12.set(map11.keys().next().value, map11.values().next().value);21const map13 = mapToConstantEntry();22const map14 = new Map();23map14.set(map13.keys().next().value, map13.values().next().value);24const map15 = mapToConstantEntry();25const map16 = new Map();26map16.set(map15.keys().next().value, map15.values().next().value);27const map17 = mapToConstantEntry();28const map18 = new Map();29map18.set(map17.keys().next().value

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