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 Github

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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, '…']126 .map((v) => `\n// • ${v.replace(/\n/gm, '\n// ')}`)127 .join('')}`;128 } else {129 return `${snippet} ${uniqueGeneratedValues.join(', ')}…`;130 }131 });132 // Extract statistics snippets133 const statisticsSnippets = updatedSnippets134 .join('')135 .split(`\n${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) => `// • ${line}`)168 .join('\n')}${computedStatitics.length > TargetNumExamples ? '\n// • …' : ''}`;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 };...

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Using AI Code Generation

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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

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Using AI Code Generation

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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);

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Using AI Code Generation

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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'));

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Using AI Code Generation

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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));

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Using AI Code Generation

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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

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Using AI Code Generation

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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);

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Using AI Code Generation

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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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