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How to use lastIndexCommentForStatistics 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 statistics = fc.statistics();3const property = fc.property(fc.integer(), fc.integer(), (a, b) => a + b === b + a);4const run = fc.check(property, { seed: 42, numRuns: 1000, verbose: 1, endOnFailure: false, interruptAfterTimeLimit: 10000, interruptAfterTimeLimitMs: 10000, interruptAfterNumberOfTries: 10000, interruptAfterNumberOfTriesMs: 10000, interruptAfterNumberOfTriesNoMoreThan: 10000, interruptAfterNumberOfTriesNoMoreThanMs: 10000, interruptAfterNumberOfTriesNoMoreThanPerMs: 10000, interruptAfterNumberOfTriesNoMoreThanPerMsMs: 10000, interruptAfterNumberOfTriesNoMoreThanPerMsNoMoreThan: 10000, interruptAfterNumberOfTriesNoMoreThanPerMsNoMoreThanMs: 10000, interruptAfterNumberOfTriesNoMoreThanPerMsNoMoreThanPerMs: 10000, interruptAfterNumberOfTriesNoMoreThanPerMsNoMoreThanPerMsMs: 10000, interruptAfterNumberOfTriesNoMoreThanPerMsNoMoreThanPerMsNoMoreThan: 10000, interruptAfterNumberOfTriesNoMoreThanPerMsNoMoreThanPerMsNoMoreThanMs: 10000 });5console.log(statistics.lastIndexCommentForStatistics());6console.log(st

Using AI Code Generation

1const { lastIndexCommentForStatistics } = require('fast-check');2const { property } = require('fast-check');3const fc = require('fast-check');4const isOdd = (n) => n % 2 === 1;5describe('isOdd', () => {6  it('should detect odd numbers', () => {7    fc.assert(8      fc.property(fc.integer(), (n) => {9        return isOdd(n) === (n % 2 === 1);10      })11    );12  });13});14const isEven = (n) => n % 2 === 0;15describe('isEven', () => {16  it('should detect even numbers', () => {17    fc.assert(18      fc.property(fc.integer(), (n) => {19        return isEven(n) === (n % 2 === 0);20      })21    );22  });23});24const { lastIndexCommentForStatistics } = require('fast-check');25const { property } = require('fast-check');26const fc = require('fast-check');27const isOdd = (n) => n % 2 === 1;28describe('isOdd', () => {29  it('should detect odd numbers', () => {30    fc.assert(31      fc.property(fc.integer(), (n) => {32        return isOdd(n) === (n % 2 === 1);33      })34    );35  });36});37const isEven = (n) => n % 2 === 0;38describe('isEven', () => {39  it('should detect even numbers', () => {40    fc.assert(41      fc.property(fc.integer(), (n) => {42        return isEven(n) === (n % 2 === 0);43      })44    );45  });46});47const { lastIndexCommentForStatistics } = require('fast-check');48const { property } = require('fast-check');49const fc = require('fast-check');50const isOdd = (n) => n % 2 === 1;51describe('isOdd', () => {52  it('should detect odd numbers', () => {53    fc.assert(54      fc.property(fc.integer(), (n) => {55        return isOdd(n) === (n % 2 === 1);

Using AI Code Generation

1const { lastIndexCommentForStatistics } = require('fast-check-monorepo');2console.log(lastIndexCommentForStatistics('test3.js'));3const { lastIndexCommentForStatistics } = require('fast-check-monorepo');4console.log(lastIndexCommentForStatistics('test4.js'));5const { lastIndexCommentForStatistics } = require('fast-check-monorepo');6console.log(lastIndexCommentForStatistics('test5.js'));7const { lastIndexCommentForStatistics } = require('fast-check-monorepo');8console.log(lastIndexCommentForStatistics('test6.js'));9const { lastIndexCommentForStatistics } = require('fast-check-monorepo');10console.log(lastIndexCommentForStatistics('test7.js'));11const { lastIndexCommentForStatistics } = require('fast-check-monorepo');12console.log(lastIndexCommentForStatistics('test8.js'));13const { lastIndexCommentForStatistics } = require('fast-check-monorepo');14console.log(lastIndexCommentForStatistics('test9.js'));15const { lastIndexCommentForStatistics } = require('fast-check-monorepo');16console.log(lastIndexCommentForStatistics('test10.js'));17const { lastIndexCommentForStatistics } = require('fast-check-monorepo');18console.log(lastIndexCommentForStatistics('test11.js'));

Using AI Code Generation

1var fc = require('fast-check');2var str = "/*\n * This is a comment\n */";3console.log(fc.lastIndexCommentForStatistics(str));4console.log(fc.lastIndexCommentForStatistics(str, 0));5console.log(fc.lastIndexCommentForStatistics(str, 1));6console.log(fc.lastIndexCommentForStatistics(str, 2));7console.log(fc.lastIndexCommentForStatistics(str, 3));8console.log(fc.lastIndexCommentForStatistics(str, 4));9console.log(fc.lastIndexCommentForStatistics(str, 5));10console.log(fc.lastIndexCommentForStatistics(str, 6));11console.log(fc.lastIndexCommentForStatistics(str, 7));12console.log(fc.lastIndexCommentForStatistics(str, 8));13console.log(fc.lastIndexCommentForStatistics(str, 9));14console.log(fc.lastIndexCommentForStatistics(str, 10));15console.log(fc.lastIndexCommentForStatistics(str, 11));16console.log(fc.lastIndexCommentForStatistics(str, 12));17console.log(fc.lastIndexCommentForStatistics(str, 13));18console.log(fc.lastIndexCommentForStatistics(str, 14));19console.log(fc.lastIndexCommentForStatistics(str, 15));20console.log(fc.lastIndexCommentForStatistics(str, 16));21console.log(fc.lastIndexCommentForStatistics(str, 17));22console.log(fc.lastIndexCommentForStatistics(str, 18));23console.log(fc.lastIndexCommentForStatistics(str, 19));24console.log(fc.lastIndexCommentForStatistics(str, 20));25console.log(fc.lastIndexCommentForStatistics(str, 21));26console.log(fc.lastIndexCommentForStatistics(str, 22));27console.log(fc.lastIndexCommentForStatistics(str, 23));28console.log(fc.lastIndexCommentForStatistics(str, 24));29console.log(fc.lastIndexCommentForStatistics(str, 25));30console.log(fc.lastIndexCommentForStatistics(str, 26));31console.log(fc.lastIndexCommentForStatistics(str, 27));32console.log(fc.lastIndexCommentForStatistics(str, 28));33console.log(fc.lastIndexCommentForStatistics(str, 29));34console.log(fc.lastIndexCommentForStatistics(str, 30));35console.log(fc.lastIndexCommentForStatistics(str, 31));36console.log(fc.lastIndexCommentForStatistics(str, 32));37console.log(fc.lastIndexCommentForStatistics(str, 33));

Using AI Code Generation

1const fc = require('fast-check');2const fs = require('fs');3const path = require('path');4const {lastIndexCommentForStatistics} = require('fast-check/lib/src/check/runner/Statistics');5const file = fs.readFileSync(path.join(__dirname, 'test2.js'), 'utf-8');6const lastIndex = lastIndexCommentForStatistics(file);7console.log(lastIndex);8const fc = require('fast-check');9const fs = require('fs');10const path = require('path');11const {lastIndexCommentForStatistics} = require('fast-check/lib/src/check/runner/Statistics');12const file = fs.readFileSync(path.join(__dirname, 'test1.js'), 'utf-8');13const lastIndex = lastIndexCommentForStatistics(file);14console.log(lastIndex);15const fc = require('fast-check');16const fs = require('fs');17const path = require('path');18const {lastIndexCommentForStatistics} = require('fast-check/lib/src/check/runner/Statistics');19const file = fs.readFileSync(path.join(__dirname, 'test.js'), 'utf-8');20const lastIndex = lastIndexCommentForStatistics(file);21console.log(lastIndex);22const fc = require('fast-check');23const fs = require('fs');24const path = require('path');25const {lastIndexCommentForStatistics} = require('fast-check/lib/src/check/runner/Statistics');26const file = fs.readFileSync(path.join(__dirname, 'test7.js'), 'utf-8');27const lastIndex = lastIndexCommentForStatistics(file);28console.log(lastIndex);29const fc = require('fast-check');30const fs = require('fs');31const path = require('path');32const {last

Using AI Code Generation

1const fc = require('fast-check');2const fs = require('fs');3const path = require('path');4const statistics = path.resolve(__dirname, './statistics.txt');5const lastComment = fc.lastIndexCommentForStatistics(statistics);6console.log(lastComment);7const fc = require('fast-check');8const fs = require('fs');9const path = require('path');10const statistics = path.resolve(__dirname, './statistics.txt');11const lastComment = fc.lastIndexCommentForStatistics(statistics);12console.log(lastComment);13const fc = require('fast-check');14const fs = require('fs');15const path = require('path');16const statistics = path.resolve(__dirname, './statistics.txt');17const lastComment = fc.lastIndexCommentForStatistics(statistics);18console.log(lastComment);19const fc = require('fast-check');20const fs = require('fs');21const path = require('path');22const statistics = path.resolve(__dirname, './statistics.txt');23const lastComment = fc.lastIndexCommentForStatistics(statistics);24console.log(lastComment);25const fc = require('fast-check');26const fs = require('fs');27const path = require('path');28const statistics = path.resolve(__dirname, './statistics.txt');29const lastComment = fc.lastIndexCommentForStatistics(statistics);30console.log(lastComment);31const fc = require('fast-check');32const fs = require('fs');33const path = require('path');34const statistics = path.resolve(__dirname, './statistics.txt');35const lastComment = fc.lastIndexCommentForStatistics(statistics);36console.log(lastComment);

Using AI Code Generation

1const fc = require('fast-check');2const { lastIndexCommentForStatistics } = require('fast-check');3const randomString = fc.sample(fc.string(), 100);4console.log(randomString);5const fc = require('fast-check');6const { lastIndexCommentForStatistics } = require('fast-check');7const randomString = fc.sample(fc.string(), 100);8console.log(randomString);9const fc = require('fast-check');10const { lastIndexCommentForStatistics } = require('fast-check');11const randomString = fc.sample(fc.string(), 100);12console.log(randomString);13const fc = require('fast-check');14const { lastIndexCommentForStatistics } = require('fast-check');15const randomString = fc.sample(fc.string(), 100);16console.log(randomString);17const fc = require('fast-check');18const { lastIndexCommentForStatistics } = require('fast-check');19const randomString = fc.sample(fc.string(), 100);20console.log(randomString);21const fc = require('fast-check');22const { lastIndexCommentForStatistics } = require('fast-check');23const randomString = fc.sample(fc.string(), 100);24console.log(randomString);

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