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How to use stringOfBuilder method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

stringOf.spec.ts

Source:stringOf.spec.ts

1import * as fc from 'fast-check';2import { stringOf } from '../../../src/arbitrary/stringOf';3import { Arbitrary } from '../../../src/check/arbitrary/definition/Arbitrary';4import { Value } from '../../../src/check/arbitrary/definition/Value';5import { Random } from '../../../src/random/generator/Random';6import { Stream } from '../../../src/stream/Stream';7import {8  assertProduceSameValueGivenSameSeed,9  assertProduceValuesShrinkableWithoutContext,10} from './__test-helpers__/ArbitraryAssertions';11import { buildShrinkTree, renderTree } from './__test-helpers__/ShrinkTree';12describe('stringOf (integration)', () => {13  type Extra = { minLength?: number; maxLength?: number; patterns: string[] };14  const extraParameters: fc.Arbitrary<Extra> = fc15    .tuple(16      fc.nat({ max: 5 }),17      fc.nat({ max: 30 }),18      fc.boolean(),19      fc.boolean(),20      // empty string not supported when trying to recognize stuff geenrated by this precise arbitrary21      fc.array(fc.fullUnicodeString({ minLength: 1 }), { minLength: 1 })22    )23    .map(([min, gap, withMin, withMax, patterns]) => ({24      minLength: withMin ? min : undefined,25      maxLength: withMax ? min + gap : undefined,26      patterns,27    }));28  const stringOfBuilder = (extra: Extra) => stringOf(new PatternsArbitrary(extra.patterns), extra);29  it('should produce the same values given the same seed', () => {30    assertProduceSameValueGivenSameSeed(stringOfBuilder, { extraParameters });31  });32  it('should produce values seen as shrinkable without any context', () => {33    assertProduceValuesShrinkableWithoutContext(stringOfBuilder, { extraParameters });34  });35  // assertShrinkProducesSameValueWithoutInitialContext is not fully supported by stringOf36  // Indeed depending how much the source strings overlaps there are possibly many possible ways to build a given string37  // so also many possible ways to shrink it.38  it.each`39    source                             | patterns        | constraints40    ${'.__..' /* not from patterns */} | ${['..', '__']} | ${{}}41    ${'__..' /* not large enough */}   | ${['..', '__']} | ${{ minLength: 3 }}42    ${'__..__..' /* too large */}      | ${['..', '__']} | ${{ maxLength: 3 }}43  `(44    'should not be able to generate $source with fc.stringOf(arb($patterns), $constraints)',45    ({ source, patterns, constraints }) => {46      // Arrange / Act47      const arb = stringOf(new PatternsArbitrary(patterns), constraints);48      const out = arb.canShrinkWithoutContext(source);49      // Assert50      expect(out).toBe(false);51    }52  );53  it.each`54    rawValue                                                                          | patterns55    ${'CccABbBbCcc'}                                                                  | ${['A', 'Bb', 'Ccc']}56    ${'_._.____...'}                                                                  | ${['._', '_...', '_._.', '_..', '.', '.._.', '__.', '....', '..', '.___', '._..', '__', '_.', '___', '.__.', '__._', '._.', '...', '_', '.._', '..._', '.__', '_.._', '_.__', '__..']}57    ${'..'.repeat(50) /* longer than default maxGeneratedLength but ok for shrink */} | ${['..', '__']}58  `('should be able to shrink $rawValue', ({ rawValue, patterns }) => {59    // Arrange60    const arb = stringOf(new PatternsArbitrary(patterns));61    const value = new Value(rawValue, undefined);62    // Act63    const renderedTree = renderTree(buildShrinkTree(arb, value, { numItems: 100 })).join('\n');64    // Assert65    expect(arb.canShrinkWithoutContext(rawValue)).toBe(true);66    expect(renderedTree).toMatchSnapshot();67  });68});69// Helpers70class PatternsArbitrary extends Arbitrary<string> {71  constructor(readonly patterns: string[]) {72    super();73  }74  generate(mrng: Random): Value<string> {75    return new Value(this.patterns[mrng.nextInt(0, this.patterns.length - 1)], undefined);76  }77  canShrinkWithoutContext(value: unknown): value is string {78    if (typeof value !== 'string') return false;79    return this.patterns.includes(value);80  }81  shrink(value: string): Stream<Value<string>> {82    const patternIndex = this.patterns.indexOf(value);83    if (patternIndex <= 0) {84      return Stream.nil();85    }86    return Stream.of(new Value(this.patterns[0], undefined));87  }...

Using AI Code Generation

1const { stringOfBuilder } = require('fast-check-monorepo');2console.log(stringOfBuilder());3const { stringOfBuilder } = require('fast-check');4console.log(stringOfBuilder());5"exports": {6  ".": {7    "import": "./lib/esm5/index.js"8  },9  "./lib": {10    "import": "./lib/esm5/index.js"11  },12  "./lib/esm5": {13    "import": "./lib/esm5/index.js"14  },15  "./lib/esm2015": {16    "import": "./lib/esm2015/index.js"17  },18  "./lib/esm2015/src": {19    "import": "./lib/esm2015/src/index.js"20  },21  "./lib/esm2015/src/arbitrary": {22    "import": "./lib/esm2015/src/arbitrary/index.js"23  },24  "./lib/esm2015/src/arbitrary/stringof": {25    "import": "./lib/esm2015/src/arbitrary/stringof.js"26  },27  "./lib/esm2015/src/arbitrary/stringofbuilder": {28    "import": "./lib/esm2015/src/arbitrary/stringofbuilder.js"29  },30  "./lib/esm2015/src/arbitrary/stringofbuilderfrom": {31    "import": "./lib/esm2015/src/ar

Using AI Code Generation

1const { stringOfBuilder } = require('fast-check-monorepo');2console.log(stringOfBuilder(10));3const { stringOfBuilder } = require('fast-check-monorepo');4it('should return string of length 10', () => {5  expect(stringOfBuilder(10)).toHaveLength(10);6});7{8  "scripts": {9  },10  "repository": {

Using AI Code Generation

1const { stringOfBuilder } = require('fast-check');2const builder = stringOfBuilder()3  .between(0, 100)4  .withLowerChar()5  .withUpperChar()6  .withNumericChar()7  .withSpecialChar();8const string = builder.build();9console.log(string);10const { stringOfBuilder } = require('fast-check');11const builder = stringOfBuilder()12  .between(0, 100)13  .withLowerChar()14  .withUpperChar()15  .withNumericChar()16  .withSpecialChar();17const string = builder.build();18console.log(string);19const { stringOfBuilder } = require('fast-check');20const builder = stringOfBuilder()21  .between(0, 100)22  .withLowerChar()23  .withUpperChar()24  .withNumericChar()25  .withSpecialChar();26const string = builder.build();27console.log(string);28const { stringOfBuilder } = require('fast-check');29const builder = stringOfBuilder()30  .between(0, 100)31  .withLowerChar()32  .withUpperChar()33  .withNumericChar()34  .withSpecialChar();35const string = builder.build();36console.log(string);37const { stringOfBuilder } = require('fast-check');38const builder = stringOfBuilder()39  .between(0, 100)40  .withLowerChar()

Using AI Code Generation

1const {stringOfBuilder} = require('fast-check-monorepo');2console.log(stringOfBuilder());3const {stringOfBuilder} = require('fast-check');4console.log(stringOfBuilder());5const {stringOfBuilder} = require('fast-check-monorepo');6console.log(stringOfBuilder());7const {stringOfBuilder} = require('fast-check');8console.log(stringOfBuilder());9const {stringOfBuilder} = require('fast-check-monorepo');10console.log(stringOfBuilder());11const {stringOfBuilder} = require('fast-check');12console.log(stringOfBuilder());13const {stringOfBuilder} = require('fast-check-monorepo');14console.log(stringOfBuilder());15const {stringOfBuilder} = require('fast-check');16console.log(stringOfBuilder());17const {stringOfBuilder} = require('fast-check-monorepo');18console.log(stringOfBuilder());19const {stringOfBuilder} = require('fast-check');20console.log(stringOfBuilder());21const {stringOfBuilder} = require('fast-check-monorepo');22console.log(stringOfBuilder());

Using AI Code Generation

1const { stringOfBuilder } = require('fast-check');2const builder = stringOfBuilder();3builder.append('hello');4builder.append('world');5const str = builder.build();6console.log(str);7{8  "scripts": {9  },10  "dependencies": {11  }12}

Using AI Code Generation

1const { stringOfBuilder } = require('fast-check-monorepo')2const { string } = require('fast-check')3const buildString = stringOfBuilder(string)4const stringOf = buildString({ minLength: 5, maxLength: 10 })5const fc = require('fast-check')6fc.assert(7  fc.property(stringOf, (s) => {8    console.log(s)9  })10  throw err;11    at Function.Module._resolveFilename (node:internal/modules/cjs/loader:925:15)12    at Function.Module._load (node:internal/modules/cjs/loader:769:27)13    at Module.require (node:internal/modules/cjs/loader:996:19)14    at require (node:internal/modules/cjs/helpers:92:18)15    at Object.<anonymous> (/Users/xxx/Projects/xxx/test.js:1:14)16    at Module._compile (node:internal/modules/cjs/loader:1095:14)17    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1124:10)18    at Module.load (node:internal/modules/cjs/loader:975:32)19    at Function.Module._load (node:internal/modules/cjs/loader:816:12)20    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12) {21}

Using AI Code Generation

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

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