How to use buildValueFor method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

CommandsArbitrary.ts

Source:CommandsArbitrary.ts

...38  }39  private metadataForReplay() {40    return this.disableReplayLog ? '' : `replayPath=${JSON.stringify(ReplayPath.stringify(this.replayPath))}`;41  }42  private buildValueFor(items: Value<CommandWrapper<Model, Real, RunResult, CheckAsync>>[], shrunkOnce: boolean) {43    const commands = items.map((item) => item.value_);44    const context: CommandsArbitraryContext<Model, Real, RunResult, CheckAsync> = { shrunkOnce, items };45    return new Value(new CommandsIterable(commands, () => this.metadataForReplay()), context);46  }47  generate(mrng: Random): Value<CommandsIterable<Model, Real, RunResult, CheckAsync>> {48    // For the moment, we fully ignore the bias on commands...49    const size = this.lengthArb.generate(mrng, undefined);50    const sizeValue = size.value;51    const items: Value<CommandWrapper<Model, Real, RunResult, CheckAsync>>[] = Array(sizeValue);52    for (let idx = 0; idx !== sizeValue; ++idx) {53      // ...even when generating the commands themselves54      const item = this.oneCommandArb.generate(mrng, undefined);55      items[idx] = item;56    }57    this.replayPathPosition = 0; // reset replay58    return this.buildValueFor(items, false);59  }60  canShrinkWithoutContext(value: unknown): value is CommandsIterable<Model, Real, RunResult, CheckAsync> {61    // Not supported yet on commands62    return false;63  }64  /** Filter commands based on the real status of the execution */65  private filterOnExecution(itemsRaw: Value<CommandWrapper<Model, Real, RunResult, CheckAsync>>[]) {66    const items: typeof itemsRaw = [];67    for (const c of itemsRaw) {68      if (c.value_.hasRan) {69        this.replayPath.push(true);70        items.push(c);71      } else this.replayPath.push(false);72    }73    return items;74  }75  /** Filter commands based on the internal replay state */76  private filterOnReplay(itemsRaw: Value<CommandWrapper<Model, Real, RunResult, CheckAsync>>[]) {77    return itemsRaw.filter((c, idx) => {78      const state = this.replayPath[this.replayPathPosition + idx];79      if (state === undefined) throw new Error(`Too short replayPath`);80      if (!state && c.value_.hasRan) throw new Error(`Mismatch between replayPath and real execution`);81      return state;82    });83  }84  /** Filter commands for shrinking purposes */85  private filterForShrinkImpl(itemsRaw: Value<CommandWrapper<Model, Real, RunResult, CheckAsync>>[]) {86    if (this.replayPathPosition === 0) {87      this.replayPath = this.sourceReplayPath !== null ? ReplayPath.parse(this.sourceReplayPath) : [];88    }89    const items =90      this.replayPathPosition < this.replayPath.length91        ? this.filterOnReplay(itemsRaw)92        : this.filterOnExecution(itemsRaw);93    this.replayPathPosition += itemsRaw.length;94    return items;95  }96  shrink(97    _value: CommandsIterable<Model, Real, RunResult, CheckAsync>,98    context: unknown99  ): Stream<Value<CommandsIterable<Model, Real, RunResult, CheckAsync>>> {100    if (context === undefined) {101      return Stream.nil<Value<CommandsIterable<Model, Real, RunResult, CheckAsync>>>();102    }103    const safeContext = context as CommandsArbitraryContext<Model, Real, RunResult, CheckAsync>;104    const shrunkOnce = safeContext.shrunkOnce;105    const itemsRaw = safeContext.items;106    const items = this.filterForShrinkImpl(itemsRaw); // filter out commands that have not been executed107    if (items.length === 0) {108      return Stream.nil<Value<CommandsIterable<Model, Real, RunResult, CheckAsync>>>();109    }110    // The shrinker of commands have to keep the last item111    // because it is the one causing the failure112    const rootShrink: Stream<Value<CommandWrapper<Model, Real, RunResult, CheckAsync>>[]> = shrunkOnce113      ? Stream.nil()114      : new Stream([[]][Symbol.iterator]());115    // If the resulting shrinkable was simply built by joining the streams one by one,116    //  > stream[n] = stream[n-1].join(nextFor[n]) -- with nextFor[-1] = rootShrink117    // we would run into stack overflows when calling next to get back the 1st element (for huge n).118    // Indeed calling stream[n].next() would require to call stream[n-1].next() and so on...119    // Instead of that we define stream[n] = rootShrink.join(nextFor[0], ..., nextFor[n])120    // So that calling next on stream[n] will not have to run too many recursions121    const nextShrinks: IterableIterator<Value<CommandWrapper<Model, Real, RunResult, CheckAsync>>[]>[] = [];122    // keep fixed number commands at the beginning123    // remove items in remaining part except the last one124    for (let numToKeep = 0; numToKeep !== items.length; ++numToKeep) {125      nextShrinks.push(126        makeLazy(() => {127          const fixedStart = items.slice(0, numToKeep);128          return this.lengthArb129            .shrink(items.length - 1 - numToKeep, undefined)130            .map((l) => fixedStart.concat(items.slice(items.length - (l.value + 1))));131        })132      );133    }134    // shrink one by one135    for (let itemAt = 0; itemAt !== items.length; ++itemAt) {136      nextShrinks.push(137        makeLazy(() =>138          this.oneCommandArb139            .shrink(items[itemAt].value_, items[itemAt].context)140            .map((v) => items.slice(0, itemAt).concat([v], items.slice(itemAt + 1)))141        )142      );143    }144    return rootShrink.join(...nextShrinks).map((shrinkables) => {145      return this.buildValueFor(146        shrinkables.map((c) => new Value(c.value_.clone(), c.context)),147        true148      );149    });150  }...

Using AI Code Generation

1const fc = require('fast-check');2const { buildValueFor } = require('fast-check-monorepo');3fc.assert(fc.property(fc.integer(), (x) => {4  const myValue = buildValueFor(x);5  return myValue === x;6}));7const fc = require('fast-check');8const { buildValueFor } = require('fast-check-monorepo');9fc.assert(fc.property(fc.integer(), (x) => {10  const myValue = buildValueFor(x);11  return myValue === x;12}));13const fc = require('fast-check');14const { buildValueFor } = require('fast-check-monorepo');15fc.assert(fc.property(fc.integer(), (x) => {16  const myValue = buildValueFor(x);17  return myValue === x;18}));19const fc = require('fast-check');20const { buildValueFor } = require('fast-check-monorepo');21fc.assert(fc.property(fc.integer(), (x) => {22  const myValue = buildValueFor(x);23  return myValue === x;24}));25const fc = require('fast-check');26const { buildValueFor } = require('fast-check-monorepo');27fc.assert(fc.property(fc.integer(), (x) => {28  const myValue = buildValueFor(x);

Using AI Code Generation

1const { buildValueFor } = require('fast-check');2const arb = fc.integer();3const value = buildValueFor(arb, 0);4console.log(value);5const { buildValueFor } = require('fast-check/lib/check/runner/ArbitraryRunner');6const arb = fc.integer();7const value = buildValueFor(arb, 0);8console.log(value);9const { buildValueFor } = require('fast-check/lib/check/runner/ArbitraryRunner');10const arb = fc.integer();11const value = buildValueFor(arb, 0);12console.log(value);13const { buildValueFor } = require('fast-check/lib/check/runner/ArbitraryRunner');14const arb = fc.integer();15const value = buildValueFor(arb, 0);16console.log(value);17const { buildValueFor } = require('fast-check/lib/check/runner/ArbitraryRunner');18const arb = fc.integer();19const value = buildValueFor(arb, 0);20console.log(value);21const { buildValueFor } = require('fast-check/lib/check/runner/ArbitraryRunner');22const arb = fc.integer();23const value = buildValueFor(arb, 0);24console.log(value);25const { buildValueFor } = require('fast-check/lib/check/runner/ArbitraryRunner');26const arb = fc.integer();27const value = buildValueFor(arb, 0);

Using AI Code Generation

1import { buildValueFor } from "arbitrary-builder";2import { Arbitrary } from "fast-check";3const customArbitrary = buildValueFor({4  properties: {5    x: { type: "number" },6    y: { type: "string" },7    z: { type: "boolean" },8  },9});10export const customArbitrary: Arbitrary<CustomObject> = customArbitrary;11import { fc, testProp } from "jest-fast-check";12import { customArbitrary } from "./test3";13testProp("should work", [customArbitrary], (obj) => {14  expect(obj).toMatchInlineSnapshot(`15    Object {16    }17  `);18});19      9 | export const customArbitrary: Arbitrary<CustomObject> = customArbitrary;20     11 | testProp("should work", [customArbitrary], (obj) => {21     12 |   expect(obj).toMatchInlineSnapshot(`22     13 |     Object {23      9 | export const customArbitrary: Arbitrary<CustomObject> = customArbitrary;

Using AI Code Generation

1const { buildValueFor } = require("fast-check");2const { property } = require("fast-check");3const { string } = require("fast-check");4const { number } = require("fast-check");5const { array } = require("fast-check");6const { tuple } = require("fast-check");7const { record } = require("fast-check");8const { dictionary } = require("fast-check");9const { set } = require("fast-check");10const { map } = require("fast-check");11const { option } = require("fast-check");12const { constantFrom } = require("fast-check");13const { oneof } = require("fast-check");14const { frequency } = require("fast-check");15const prop = property(string(), number(), (s, n) => {16return s.length === n;17});18const prop2 = property(array(string()), (s) => {19return s.length >= 0;20});21const prop3 = property(tuple(string(), number()), (s) => {22return s.length >= 0;23});24const prop4 = property(record(string(), number()), (s) => {25return s.length >= 0;26});27const prop5 = property(dictionary(string(), number()), (s) => {28return s.length >= 0;29});30const prop6 = property(set(string()), (s) => {31return s.length >= 0;32});33const prop7 = property(map(string(), number()), (s) => {34return s.length >= 0;35});36const prop8 = property(option(string()), (s) => {37return s.length >= 0;38});39const prop9 = property(constantFrom("a", "b", "c"), (s) => {40return s.length >= 0;41});42const prop10 = property(oneof(string(), number()), (s) => {43return s.length >= 0;44});45const prop11 = property(frequency({ weight: 1, arbitrary: string() }, { weight: 1, arbitrary: number() }), (s) => {46return s.length >= 0;47});48const prop12 = property(string(), number(), (s, n) => {49return s.length === n;50});51const prop13 = property(string(), number(), (s, n) => {52return s.length === n;53});54const prop14 = property(string(), number(), (s, n) => {

Using AI Code Generation

1import { buildValueFor } from 'fast-check-monorepo';2import { Type } from 'io-ts';3import { fromNullable } from 'io-ts-types/lib/fromNullable';4import { option } from 'io-ts-types/lib/option';5const type = option(fromNullable(string));6import { buildValueFor } from 'fast-check-monorepo';7import { Type } from 'io-ts';8import { fromNullable } from 'io-ts-types/lib/fromNullable';9import { option } from 'io-ts-types/lib/option';10const type = option(fromNullable(string));11import { buildValueFor } from 'fast-check-monorepo';12import { Type } from 'io-ts';13import { fromNullable } from 'io-ts-types/lib/fromNullable';14import { option } from 'io-ts-types/lib/option';15const type = option(fromNullable(string));16import { buildValueFor } from 'fast-check-monorepo';17import { Type } from 'io-ts';18import { fromNullable } from 'io-ts-types/lib/fromNullable';19import { option } from 'io-ts-types/lib/option';20const type = option(fromNullable(string));21import { buildValueFor } from 'fast-check-monorepo';22import { Type } from 'io-ts';23import { fromNullable } from 'io-ts-types/lib/fromNullable';24import { option } from 'io-ts-types

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