How to use noExecArbitrary method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

commands.spec.ts

Source:commands.spec.ts Github

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1import * as fc from 'fast-check';2import { commands } from '../../../src/arbitrary/commands';3import prand from 'pure-rand';4import { Command } from '../../../src/check/model/command/Command';5import { Random } from '../../../src/random/generator/Random';6import { Arbitrary } from '../../../src/check/arbitrary/definition/Arbitrary';7import { Value } from '../../../src/check/arbitrary/definition/Value';8import { Stream } from '../../../src/stream/Stream';9import { tuple } from '../../../src/arbitrary/tuple';10import { nat } from '../../../src/arbitrary/nat';11import { isStrictlySmallerArray } from './__test-helpers__/ArrayHelpers';12type Model = Record<string, unknown>;13type Real = unknown;14type Cmd = Command<Model, Real>;15const model: Model = Object.freeze({});16const real: Real = Object.freeze({});17describe('commands (integration)', () => {18 function simulateCommands(cmds: Iterable<Cmd>): void {19 for (const c of cmds) {20 if (!c.check(model)) continue;21 try {22 c.run(model, real);23 } catch (err) {24 return;25 }26 }27 }28 it('should generate a cloneable instance', () => {29 fc.assert(30 fc.property(fc.integer(), fc.option(fc.integer({ min: 2 }), { nil: undefined }), (seed, biasFactor) => {31 // Arrange32 const mrng = new Random(prand.xorshift128plus(seed));33 const logOnCheck: { data: string[] } = { data: [] };34 // Act35 const commandsArb = commands([36 new FakeConstant(new SuccessCommand(logOnCheck)),37 new FakeConstant(new SkippedCommand(logOnCheck)),38 new FakeConstant(new FailureCommand(logOnCheck)),39 ]);40 const baseCommands = commandsArb.generate(mrng, biasFactor);41 // Assert42 return baseCommands.hasToBeCloned;43 })44 );45 });46 it('should skip skipped commands on shrink', () => {47 fc.assert(48 fc.property(fc.integer(), fc.option(fc.integer({ min: 2 }), { nil: undefined }), (seed, biasFactor) => {49 // Arrange50 const mrng = new Random(prand.xorshift128plus(seed));51 const logOnCheck: { data: string[] } = { data: [] };52 // Act53 const commandsArb = commands([54 new FakeConstant(new SuccessCommand(logOnCheck)),55 new FakeConstant(new SkippedCommand(logOnCheck)),56 new FakeConstant(new FailureCommand(logOnCheck)),57 ]);58 const baseCommands = commandsArb.generate(mrng, biasFactor);59 simulateCommands(baseCommands.value);60 // Assert61 const shrinks = commandsArb.shrink(baseCommands.value_, baseCommands.context);62 for (const shrunkCmds of shrinks) {63 logOnCheck.data = [];64 [...shrunkCmds.value].forEach((c) => c.check(model));65 expect(logOnCheck.data.every((e) => e !== 'skipped')).toBe(true);66 }67 })68 );69 });70 it('should shrink with failure at the end', () => {71 fc.assert(72 fc.property(fc.integer(), fc.option(fc.integer({ min: 2 }), { nil: undefined }), (seed, biasFactor) => {73 // Arrange74 const mrng = new Random(prand.xorshift128plus(seed));75 const logOnCheck: { data: string[] } = { data: [] };76 // Act77 const commandsArb = commands([78 new FakeConstant(new SuccessCommand(logOnCheck)),79 new FakeConstant(new SkippedCommand(logOnCheck)),80 new FakeConstant(new FailureCommand(logOnCheck)),81 ]);82 const baseCommands = commandsArb.generate(mrng, biasFactor);83 simulateCommands(baseCommands.value);84 fc.pre(logOnCheck.data[logOnCheck.data.length - 1] === 'failure');85 // Assert86 const shrinks = commandsArb.shrink(baseCommands.value_, baseCommands.context);87 for (const shrunkCmds of shrinks) {88 logOnCheck.data = [];89 [...shrunkCmds.value].forEach((c) => c.check(model));90 if (logOnCheck.data.length > 0) {91 // either empty or ending by the failure92 expect(logOnCheck.data[logOnCheck.data.length - 1]).toEqual('failure');93 }94 }95 })96 );97 });98 it('should shrink with at most one failure and all successes', () => {99 fc.assert(100 fc.property(fc.integer(), fc.option(fc.integer({ min: 2 }), { nil: undefined }), (seed, biasFactor) => {101 // Arrange102 const mrng = new Random(prand.xorshift128plus(seed));103 const logOnCheck: { data: string[] } = { data: [] };104 // Act105 const commandsArb = commands([106 new FakeConstant(new SuccessCommand(logOnCheck)),107 new FakeConstant(new SkippedCommand(logOnCheck)),108 new FakeConstant(new FailureCommand(logOnCheck)),109 ]);110 const baseCommands = commandsArb.generate(mrng, biasFactor);111 simulateCommands(baseCommands.value);112 // Assert113 const shrinks = commandsArb.shrink(baseCommands.value_, baseCommands.context);114 for (const shrunkCmds of shrinks) {115 logOnCheck.data = [];116 [...shrunkCmds.value].forEach((c) => c.check(model));117 expect(logOnCheck.data.every((e) => e === 'failure' || e === 'success')).toBe(true);118 expect(logOnCheck.data.filter((e) => e === 'failure').length <= 1).toBe(true);119 }120 })121 );122 });123 it('should provide commands which have never run', () => {124 const commandsArb = commands([new FakeConstant(new SuccessCommand({ data: [] }))], {125 disableReplayLog: true,126 });127 const manyArbsIncludingCommandsOne = tuple(nat(16), commandsArb, nat(16));128 const assertCommandsNotStarted = (value: Value<[number, Iterable<Cmd>, number]>) => {129 // Check the commands have never been executed130 // by checking the toString of the iterable is empty131 expect(String(value.value_[1])).toEqual('');132 };133 const startCommands = (value: Value<[number, Iterable<Cmd>, number]>) => {134 // Iterate over all the generated commands to run them all135 let ranOneCommand = false;136 for (const cmd of value.value_[1]) {137 ranOneCommand = true;138 cmd.run({}, {});139 }140 // Confirming that executing at least one command will make the toString of the iterable141 // not empty142 if (ranOneCommand) {143 expect(String(value.value_[1])).not.toEqual('');144 }145 };146 fc.assert(147 fc.property(148 fc.integer().noShrink(),149 fc.infiniteStream(fc.nat()),150 fc.option(fc.integer({ min: 2 }), { nil: undefined }),151 (seed, shrinkPath, biasFactor) => {152 // Generate the first Value153 const it = shrinkPath[Symbol.iterator]();154 const mrng = new Random(prand.xorshift128plus(seed));155 let currentValue: Value<[number, Iterable<Cmd>, number]> | null = manyArbsIncludingCommandsOne.generate(156 mrng,157 biasFactor158 );159 // Check status and update first Value160 assertCommandsNotStarted(currentValue);161 startCommands(currentValue);162 // Traverse the shrink tree in order to detect already seen ids163 while (currentValue !== null) {164 currentValue = manyArbsIncludingCommandsOne165 .shrink(currentValue.value_, currentValue.context)166 .map((nextValue) => {167 // Check nothing starting for the next one168 assertCommandsNotStarted(nextValue);169 // Start everything: not supposed to impact any other shrinkable170 startCommands(nextValue);171 return nextValue;172 })173 .getNthOrLast(it.next().value);174 }175 }176 )177 );178 });179 it('should shrink to smaller values', () => {180 const commandsArb = commands([nat(3).map((id) => new SuccessIdCommand(id))]);181 fc.assert(182 fc.property(183 fc.integer().noShrink(),184 fc.infiniteStream(fc.nat()),185 fc.option(fc.integer({ min: 2 }), { nil: undefined }),186 (seed, shrinkPath, biasFactor) => {187 // Generate the first Value188 const it = shrinkPath[Symbol.iterator]();189 const mrng = new Random(prand.xorshift128plus(seed));190 let currentValue: Value<Iterable<Cmd>> | null = commandsArb.generate(mrng, biasFactor);191 // Run all commands of first Value192 simulateCommands(currentValue.value_);193 // Traverse the shrink tree in order to detect already seen ids194 const extractIdRegex = /^custom\((\d+)\)$/;195 while (currentValue !== null) {196 const currentItems = [...currentValue.value_].map((c) => +extractIdRegex.exec(c.toString())![1]);197 currentValue = commandsArb198 .shrink(currentValue.value_, currentValue.context)199 .map((nextValue) => {200 // Run all commands of nextShrinkable201 simulateCommands(nextValue.value_);202 // Check nextShrinkable is strictly smaller than current one203 const nextItems = [...nextValue.value_].map((c) => +extractIdRegex.exec(c.toString())![1]);204 expect(isStrictlySmallerArray(nextItems, currentItems)).toBe(true);205 // Next is eligible for shrinking206 return nextValue;207 })208 .getNthOrLast(it.next().value);209 }210 }211 )212 );213 });214 it('should shrink the same way when based on replay data', () => {215 fc.assert(216 fc.property(217 fc.integer().noShrink(),218 fc.nat(100),219 fc.option(fc.integer({ min: 2 }), { nil: undefined }),220 (seed, numValues, biasFactor) => {221 // create unused logOnCheck222 const logOnCheck: { data: string[] } = { data: [] };223 // generate scenario and simulate execution224 const rng = prand.xorshift128plus(seed);225 const refArbitrary = commands([226 new FakeConstant(new SuccessCommand(logOnCheck)),227 new FakeConstant(new SkippedCommand(logOnCheck)),228 new FakeConstant(new FailureCommand(logOnCheck)),229 nat().map((v) => new SuccessIdCommand(v)),230 ]);231 const refValue: Value<Iterable<Cmd>> = refArbitrary.generate(new Random(rng), biasFactor);232 simulateCommands(refValue.value_);233 // trigger computation of replayPath234 // and extract shrinks for ref235 const refShrinks = [236 ...refArbitrary237 .shrink(refValue.value_, refValue.context)238 .take(numValues)239 .map((s) => [...s.value_].map((c) => c.toString())),240 ];241 // extract replayPath242 const replayPath = /\/\*replayPath=['"](.*)['"]\*\//.exec(refValue.value_.toString())![1];243 // generate scenario but do not simulate execution244 const noExecArbitrary = commands(245 [246 new FakeConstant(new SuccessCommand(logOnCheck)),247 new FakeConstant(new SkippedCommand(logOnCheck)),248 new FakeConstant(new FailureCommand(logOnCheck)),249 nat().map((v) => new SuccessIdCommand(v)),250 ],251 { replayPath }252 );253 const noExecValue: Value<Iterable<Cmd>> = noExecArbitrary.generate(new Random(rng), biasFactor);254 // check shrink values are identical255 const noExecShrinks = [256 ...noExecArbitrary257 .shrink(noExecValue.value_, noExecValue.context)258 .take(numValues)259 .map((s) => [...s.value_].map((c) => c.toString())),260 ];261 expect(noExecShrinks).toEqual(refShrinks);262 }263 )264 );265 });266});267// Helpers268class FakeConstant extends Arbitrary<Cmd> {269 constructor(private readonly cmd: Cmd) {270 super();271 }272 generate(): Value<Cmd> {273 return new Value(this.cmd, undefined);274 }275 canShrinkWithoutContext(value: unknown): value is Cmd {276 return false;277 }278 shrink(): Stream<Value<Cmd>> {279 return Stream.nil();280 }281}282class SuccessIdCommand implements Cmd {283 constructor(readonly id: number) {}284 check = () => true;285 run = () => {};286 toString = () => `custom(${this.id})`;287}288class SuccessCommand implements Cmd {289 constructor(readonly log: { data: string[] }) {}290 check = () => {291 this.log.data.push(this.toString());292 return true;293 };294 run = () => {};295 toString = () => 'success';296}297class SkippedCommand implements Cmd {298 constructor(readonly log: { data: string[] }) {}299 check = () => {300 this.log.data.push(this.toString());301 return false;302 };303 run = () => {};304 toString = () => 'skipped';305}306class FailureCommand implements Cmd {307 constructor(readonly log: { data: string[] }) {}308 check = () => {309 this.log.data.push(this.toString());310 return true;311 };312 run = () => {313 throw 'error';314 };315 toString = () => 'failure';...

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Using AI Code Generation

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1const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;2const fc = require('fast-check');3const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;4const fc = require('fast-check');5fc.assert(6 fc.property(fc.integer(), fc.integer(), (a, b) => {7 return noExecArbitrary(a, b);8 })9);10const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;11const fc = require('fast-check');12fc.assert(13 fc.property(fc.integer(), fc.integer(), (a, b) => {14 return noExecArbitrary(a, b);15 })16);17const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;18const fc = require('fast-check');19fc.assert(20 fc.property(fc.integer(), fc.integer(), (a, b) => {21 return noExecArbitrary(a, b);22 })23);24const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;25const fc = require('fast-check');26fc.assert(27 fc.property(fc.integer(), fc.integer(), (a, b) => {28 return noExecArbitrary(a, b);29 })30);31const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;32const fc = require('fast-check');33fc.assert(34 fc.property(fc.integer(), fc.integer(), (a, b) => {35 return noExecArbitrary(a, b);36 })37);38const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;39const fc = require('fast-check');40fc.assert(41 fc.property(fc.integer(), fc.integer(), (a, b) => {

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Using AI Code Generation

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1import { noExecArbitrary } from 'fast-check';2describe('noExecArbitrary', () => {3 it('should not execute the code', () => {4 fc.assert(5 fc.property(6 noExecArbitrary(fc.string()),7 (s) => {8 console.log(s);9 return true;10 }11 );12 });13});14 0 passing (1s)

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Using AI Code Generation

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1import { noExecArbitrary } from "fast-check-monorepo";2import { noExecArbitrary } from "fast-check-monorepo";3import { noExecArbitrary } from "fast-check-monorepo";4import { noExecArbitrary } from "fast-check-monorepo";5import { noExecArbitrary } from "fast-check-monorepo";6import { noExecArbitrary } from "fast-check-monorepo";7import { noExecArbitrary } from "fast-check-monorepo";8import { noExecArbitrary } from "fast-check-monorepo";9import { noExecArbitrary } from "fast-check-monorepo";10import { noExecArbitrary } from "fast-check-monorepo";11import { noExecArbitrary } from "fast-check-monorepo";12import { noExecArbitrary } from "fast-check-monorepo";13import { noExecArbitrary } from "fast-check-monorepo";14import { noExecArbitrary } from "fast-check-monorepo";15import { noExecArbitrary } from "fast-check-monorepo";

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Using AI Code Generation

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1const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;2fc.assert(3 fc.property(noExecArbitrary(fc.string()), (s) => {4 return s.indexOf('exec') === -1;5 })6);7const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;8fc.assert(9 fc.property(noExecArbitrary(fc.string()), (s) => {10 return s.indexOf('exec') === -1;11 })12);13const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;14fc.assert(15 fc.property(noExecArbitrary(fc.string()), (s) => {16 return s.indexOf('exec') === -1;17 })18);19const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;20fc.assert(21 fc.property(noExecArbitrary(fc.string()), (s) => {22 return s.indexOf('exec') === -1;23 })24);25const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;26fc.assert(27 fc.property(noExecArbitrary(fc.string()), (s) => {28 return s.indexOf('exec') === -1;29 })30);31const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;32fc.assert(33 fc.property(noExecArbitrary(fc.string()), (s) => {34 return s.indexOf('exec') === -1;35 })36);37const noExecArbitrary = require('fast-check-monorepo').noExecArbitrary;38fc.assert(39 fc.property(noExecArbitrary(fc.string()), (s) => {40 return s.indexOf('exec') === -1;41 })42);

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Using AI Code Generation

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1const fc = require('fast-check');2const { noExecArbitrary } = require('fast-check-monorepo');3const test = async () => {4 const arb = noExecArbitrary(fc.integer());5 const value = await fc.sample(arb, 1);6 console.log(value);7};8test();9{10 "dependencies": {11 }12}

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Using AI Code Generation

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1const fc = require('fast-check');2const { noExecArbitrary } = require('fast-check-monorepo');3const { noExecArbitrary } = require('fast-check-monorepo');4const arb = noExecArbitrary(fc.array(fc.integer()));5fc.assert(6 fc.property(arb, (a) => {7 console.log(a);8 return true;9 })10);

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Using AI Code Generation

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1const { noExecArbitrary } = require('fast-check-monorepo');2const { fc } = require('fast-check');3const { exec } = require('child_process');4const { command, args } = noExecArbitrary(5);6fc.assert(7 fc.property(command, args, (command, args) => {8 const child = exec(command, args);9 })10);11{12 "scripts": {13 },14 "dependencies": {15 }16}

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Using AI Code Generation

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

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