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How to use uniqueGeneratedValues method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

Docs.md.spec.ts

Source:Docs.md.spec.ts

1import * as fs from 'fs';2import fc from '../../../src/fast-check';3// For ES Modules:4//import { dirname } from 'path';5//import { fileURLToPath } from 'url';6//const __filename = fileURLToPath(import.meta.url);7//const __dirname = dirname(__filename);8const TargetNumExamples = 5;9const JsBlockStart = '```js';10const JsBlockEnd = '```';11const CommentForGeneratedValues = '// Examples of generated values:';12const CommentForArbitraryIndicator = '// Use the arbitrary:';13const CommentForStatistics = '// Computed statistics for 10k generated values:';14describe('Docs.md', () => {15  it('Should check code snippets validity and fix generated values', () => {16    const originalFileContent = fs.readFileSync(`${__dirname}/../../../documentation/Arbitraries.md`).toString();17    const { content: fileContent } = refreshContent(originalFileContent);18    if (Number(process.versions.node.split('.')[0]) < 12) {19      // There were some updates regarding how to stringify invalid surrogate pairs20      // between node 10 and node 12 with JSON.stringify.21      // It directly impacts fc.stringify.22      //23      // In node 10: JSON.stringify("\udff5") === '"\udff5"'24      // In node 12: JSON.stringify("\udff5") === '"\\udff5"'25      // You may try with: JSON.stringify("\udff5").split('').map(c => c.charCodeAt(0).toString(16))26      console.warn(`Unable to properly check code snippets defined in the documentation...`);27      const sanitize = (s: string) => s.replace(/(\\)(u[0-9a-f]{4})/g, (c) => JSON.parse('"' + c + '"'));28      expect(sanitize(fileContent)).toEqual(sanitize(originalFileContent));29      if (process.env.UPDATE_CODE_SNIPPETS) {30        throw new Error('You must use a more recent release of node to update code snippets (>=12)');31      }32      return;33    }34    if (fileContent !== originalFileContent && process.env.UPDATE_CODE_SNIPPETS) {35      console.warn(`Updating code snippets defined in the documentation...`);36      fs.writeFileSync(`${__dirname}/../../../documentation/Arbitraries.md`, fileContent);37    }38    if (!process.env.UPDATE_CODE_SNIPPETS) {39      expect(fileContent).toEqual(originalFileContent);40    }41  });42});43// Helpers44function extractJsCodeBlocks(content: string): string[] {45  const lines = content.split('\n');46  const blocks: string[] = [];47  let isJsBlock = false;48  let currentBlock: string[] = [];49  for (const line of lines) {50    if (isJsBlock) {51      currentBlock.push(line);52      if (line === JsBlockEnd) {53        blocks.push(currentBlock.join('\n') + '\n');54        isJsBlock = false;55        currentBlock = [];56      }57    } else if (line === JsBlockStart) {58      blocks.push(currentBlock.join('\n') + '\n');59      isJsBlock = true;60      currentBlock = [line];61    } else {62      currentBlock.push(line);63    }64  }65  if (currentBlock.length !== 0) {66    blocks.push(currentBlock.join('\n'));67  }68  return blocks;69}70function isJsCodeBlock(blockContent: string): boolean {71  return blockContent.startsWith(`${JsBlockStart}\n`) && blockContent.endsWith(`${JsBlockEnd}\n`);72}73function trimJsCodeBlock(blockContent: string): string {74  const startLength = `${JsBlockStart}\n`.length;75  const endLength = `${JsBlockEnd}\n`.length;76  return blockContent.substr(startLength, blockContent.length - startLength - endLength);77}78function addJsCodeBlock(blockContent: string): string {79  return `${JsBlockStart}\n${blockContent}${JsBlockEnd}\n`;80}81function refreshContent(originalContent: string): { content: string; numExecutedSnippets: number } {82  // Re-run all the code (supported) snippets83  // Re-generate all the examples84  let numExecutedSnippets = 0;85  // Extract code blocks86  const extractedBlocks = extractJsCodeBlocks(originalContent);87  // Execute code blocks88  const refinedBlocks = extractedBlocks.map((block) => {89    if (!isJsCodeBlock(block)) return block;90    // Remove list of examples and statistics91    const cleanedBlock = trimJsCodeBlock(block)92      .replace(new RegExp(`${CommentForGeneratedValues}[^\n]*(\n//.*)*`, 'mg'), CommentForGeneratedValues)93      .replace(new RegExp(`${CommentForStatistics}[^\n]*(\n//.*)*`, 'mg'), CommentForStatistics);94    // Extract code snippets95    const snippets = cleanedBlock96      .split(`\n${CommentForGeneratedValues}`)97      .map((snippet, index, all) => (index !== all.length - 1 ? `${snippet}\n${CommentForGeneratedValues}` : snippet));98    // Execute blocks and set examples99    const updatedSnippets = snippets.map((snippet) => {100      if (!snippet.endsWith(CommentForGeneratedValues)) return snippet;101      ++numExecutedSnippets;102      // eslint-disable-next-line @typescript-eslint/no-unused-vars103      const generatedValues = (function (fc): string[] {104        const numRuns = 5 * TargetNumExamples;105        const lastIndexCommentForStatistics = snippet.lastIndexOf(CommentForStatistics);106        const refinedSnippet =107          lastIndexCommentForStatistics !== -1 ? snippet.substring(lastIndexCommentForStatistics) : snippet;108        const seed = refinedSnippet.replace(/\s*\/\/.*/g, '').replace(/\s+/gm, ' ').length;109        const indexArbitraryPart = refinedSnippet.indexOf(CommentForArbitraryIndicator);110        const preparationPart = indexArbitraryPart !== -1 ? refinedSnippet.substring(0, indexArbitraryPart) : '';111        const arbitraryPart = indexArbitraryPart !== -1 ? refinedSnippet.substring(indexArbitraryPart) : refinedSnippet;112        const evalCode = `${preparationPart}\nfc.sample(${arbitraryPart}\n, { numRuns: ${numRuns}, seed: ${seed} }).map(v => fc.stringify(v))`;113        try {114          return eval(evalCode);115        } catch (err) {116          throw new Error(`Failed to run code snippet:\n\n${evalCode}\n\nWith error message: ${err}`);117        }118      })(fc);119      const uniqueGeneratedValues = Array.from(new Set(generatedValues)).slice(0, TargetNumExamples);120      // If the display for generated values is too long, we split it into a list of items121      if (122        uniqueGeneratedValues.some((value) => value.includes('\n')) ||123        uniqueGeneratedValues.reduce((totalLength, value) => totalLength + value.length, 0) > 120124      ) {125        return `${snippet}${[...uniqueGeneratedValues, 'â¦']126          .map((v) => `\n// â¢ ${v.replace(/\n/gm, '\n//   ')}`)127          .join('')}`;128      } else {129        return `${snippet} ${uniqueGeneratedValues.join(', ')}â¦`;130      }131    });132    // Extract statistics snippets133    const statisticsSnippets = updatedSnippets134      .join('')135      .split(`\n${CommentForStatistics}`)136      .map((snippet, index, all) => (index !== all.length - 1 ? `${snippet}\n${CommentForStatistics}` : snippet));137    // Execute statistics138    const updatedStatisticsSnippets = statisticsSnippets.map((snippet) => {139      if (!snippet.endsWith(CommentForStatistics)) return snippet;140      ++numExecutedSnippets;141      const computedStatitics = (baseSize: fc.Size) =>142        // eslint-disable-next-line @typescript-eslint/no-unused-vars143        (function (fc): string[] {144          const lastIndexCommentForGeneratedValues = snippet.lastIndexOf(CommentForGeneratedValues);145          const refinedSnippet =146            lastIndexCommentForGeneratedValues !== -1 ? snippet.substring(lastIndexCommentForGeneratedValues) : snippet;147          const seed = refinedSnippet.replace(/\s*\/\/.*/g, '').replace(/\s+/gm, ' ').length;148          const evalCode = refinedSnippet;149          const originalConsoleLog = console.log;150          const originalGlobal = fc.readConfigureGlobal();151          try {152            const lines: string[] = [];153            console.log = (line) => lines.push(line);154            fc.configureGlobal({ seed, numRuns: 10000, baseSize });155            eval(evalCode);156            return lines;157          } catch (err) {158            throw new Error(`Failed to run code snippet:\n\n${evalCode}\n\nWith error message: ${err}`);159          } finally {160            console.log = originalConsoleLog;161            fc.configureGlobal(originalGlobal);162          }163        })(fc);164      const formatForSize = (size: fc.Size) =>165        `// For size = "${size}":\n${computedStatitics(size)166          .slice(0, TargetNumExamples)167          .map((line) => `// â¢ ${line}`)168          .join('\n')}${computedStatitics.length > TargetNumExamples ? '\n// â¢ â¦' : ''}`;169      const sizes = ['xsmall', 'small', 'medium'] as const;170      return `${snippet}\n${sizes.map((size) => formatForSize(size)).join('\n')}`;171    });172    return addJsCodeBlock(updatedStatisticsSnippets.join(''));173  });174  return { content: refinedBlocks.join(''), numExecutedSnippets };...

Using AI Code Generation

1const fc = require('fast-check');2const { uniqueGeneratedValues } = require('fast-check-monorepo');3const { generate } = uniqueGeneratedValues(fc.integer(), 100);4const values = generate();5console.log(values);6console.log(values.length);

Using AI Code Generation

1const fc = require('fast-check');2const { uniqueGeneratedValues } = require('fast-check/lib/check/arbitrary/UniqueValueArbitraryWrapper');3fc.assert(4  fc.property(5    fc.uniqueGeneratedValues(fc.integer()),6    fc.uniqueGeneratedValues(fc.integer()),7    (a, b) => {8      return a !== b;9    }10);11const fc = require('fast-check');12const { uniqueGeneratedValues } = require('fast-check/lib/check/arbitrary/UniqueValueArbitraryWrapper');13fc.assert(14  fc.property(15    uniqueGeneratedValues(fc.integer()),16    uniqueGeneratedValues(fc.integer()),17    (a, b) => {18      return a !== b;19    }20);21const fc = require('fast-check');22const { uniqueGeneratedValues } = require('fast-check/lib/check/arbitrary/UniqueValueArbitraryWrapper');23fc.assert(24  fc.property(25    uniqueGeneratedValues(fc.integer()),26    uniqueGeneratedValues(fc.integer()),27    (a, b) => {28      return a !== b;29    }30);31const fc = require('fast-check');32const { uniqueGeneratedValues } = require('fast-check/lib/check/arbitrary/UniqueValueArbitraryWrapper');33fc.assert(34  fc.property(35    uniqueGeneratedValues(fc.integer()),36    uniqueGeneratedValues(fc.integer()),37    (a, b) => {38      return a !== b;39    }40);41const fc = require('fast-check');42const { uniqueGeneratedValues } = require('fast-check/lib/check/arbitrary/UniqueValueArbitraryWrapper');43fc.assert(44  fc.property(45    uniqueGeneratedValues(fc.integer()),46    uniqueGeneratedValues(fc.integer()),47    (a, b) => {48      return a !== b;49    }50);51const fc = require('fast-check');52const { uniqueGeneratedValues } = require('fast-check/lib/check/arbitrary/UniqueValueArbitraryWrapper');53fc.assert(

Using AI Code Generation

1const fc = require('fast-check');2const { uniqueGeneratedValues } = require('fast-check-monorepo');3const myArray = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20];4const myGenerator = fc.array(fc.integer(1,20), 3, 20);5fc.assert(6  fc.property(myGenerator, (arr) => {7    const uniqueArr = uniqueGeneratedValues(arr, myArray);8    return uniqueArr.every((val) => myA

Using AI Code Generation

1import { uniqueGeneratedValues } from "fast-check";2const generateUniqueValues = uniqueGeneratedValues(3  (a, b) => a === b,4  () => Math.random()5);6const values = generateUniqueValues(3);7console.log(values);8import { uniqueGeneratedValues } from "fast-check";9const generateUniqueValues = uniqueGeneratedValues(10  (a, b) => a === b,11  () => Math.random()12);13const values = generateUniqueValues(3);14console.log(values);15import { uniqueGeneratedValues } from "fast-check";16const generateUniqueValues = uniqueGeneratedValues(17  (a, b) => a === b,18  () => Math.random()19);20const values = generateUniqueValues(3);21console.log(values);22import { uniqueGeneratedValues } from "fast-check";23const generateUniqueValues = uniqueGeneratedValues(24  (a, b) => a === b,25  () => Math.random()26);27const values = generateUniqueValues(3);28console.log(values);29import { uniqueGeneratedValues } from "fast-check";30const generateUniqueValues = uniqueGeneratedValues(31  (a, b) => a === b,32  () => Math.random()33);34const values = generateUniqueValues(3);35console.log(values);36import { uniqueGeneratedValues } from "fast-check";37const generateUniqueValues = uniqueGeneratedValues(38  (a, b) => a === b,39  () => Math.random()40);41const values = generateUniqueValues(3);42console.log(values);43import { uniqueGeneratedValues } from "fast-check";44const generateUniqueValues = uniqueGeneratedValues(45  (a, b) => a === b,46  () => Math.random()47);48const values = generateUniqueValues(3);49console.log(values);

Using AI Code Generation

1const fc = require('fast-check');2const {uniqueGeneratedValues} = require('fast-check-monorepo');3const generator = fc.integer(1, 100);4const values = fc.sample(generator, 1000);5const uniqueValues = uniqueGeneratedValues(values);6console.log(`Unique values: ${uniqueValues.size}`);7console.log(`Generated values: ${values.length}`);8const fc = require('fast-check');9const {uniqueGeneratedValues} = require('fast-check-monorepo');10const generator = fc.integer(1, 100);11const predicate = (value) => value % 2 === 0;12const values = fc.sample(generator, 1000);13const uniqueValues = uniqueGeneratedValues(values, predicate);14console.log(`Unique values: ${uniqueValues.size}`);15console.log(`Generated values: ${values.length}`);16const fc = require('fast-check');17const {uniqueGeneratedValues} = require('fast-check-monorepo');18const generator = fc.integer(1, 100);19const predicate = (value) => value % 2 === 0;20const values = fc.sample(generator, 1000);21const uniqueValues = uniqueGeneratedValues(values, predicate);22console.log(`Unique values: ${uniqueValues.size}`);23console.log(`Generated values: ${values.length}`);24const fc = require('fast-check

Using AI Code Generation

1const fc = require('fast-check');2const { uniqueGeneratedValues } = require('fast-check-monorepo');3const uniqueValues = uniqueGeneratedValues(fc.integer(), 5);4console.log(uniqueValues);5const fc = require('fast-check');6const { uniqueGeneratedValues } = require('fast-check-monorepo');7const uniqueValues = uniqueGeneratedValues(fc.integer(), 5);8console.log(uniqueValues);9const fc = require('fast-check');10const { uniqueGeneratedValues } = require('fast-check-monorepo');11const uniqueValues = uniqueGeneratedValues(fc.integer(), 5);12console.log(uniqueValues);13const fc = require('fast-check');14const { uniqueGeneratedValues } = require('fast-check-monorepo');15const uniqueValues = uniqueGeneratedValues(fc.integer(), 5);16console.log(uniqueValues);17const fc = require('fast-check');18const { uniqueGeneratedValues } = require('fast-check-monorepo');19const uniqueValues = uniqueGeneratedValues(fc.integer(), 5);20console.log(uniqueValues);21const fc = require('fast-check');22const { uniqueGeneratedValues } = require('fast-check-monorepo');23const uniqueValues = uniqueGeneratedValues(fc.integer(), 5);24console.log(uniqueValues

Using AI Code Generation

1const { uniqueValues } = require('fast-check');2const uniqueGeneratedValues = uniqueValues();3const testArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];4const uniqueValuesArray = uniqueGeneratedValues(testArray);5console.log(uniqueValuesArray);6const { uniqueValues } = require('fast-check');7const uniqueGeneratedValues = uniqueValues();8const testArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];9const uniqueValuesArray = uniqueGeneratedValues(testArray);10console.log(uniqueValuesArray);11const { uniqueValues } = require('fast-check');12const uniqueGeneratedValues = uniqueValues();13const testArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];14const uniqueValuesArray = uniqueGeneratedValues(testArray);15console.log(uniqueValuesArray);16const { uniqueValues } = require('fast-check');17const uniqueGeneratedValues = uniqueValues();18const testArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];19const uniqueValuesArray = uniqueGeneratedValues(testArray);20console.log(uniqueValuesArray);

Using AI Code Generation

1const fc = require('fast-check');2const { uniqueGeneratedValues } = require('fast-check-monorepo');3const uniqueValues = uniqueGeneratedValues(fc.integer(), 100);4describe('unique values', () => {5  it('should generate unique values', () => {6    for (let i = 0; i < 100; i++) {7      expect(uniqueValues.next().value).toBe(i);8    }9  });10});

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