75 lines
2.0 KiB
JavaScript
75 lines
2.0 KiB
JavaScript
const crypto = require('crypto')
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/* froth
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* num: number of test strings to return
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* max: maximum length of test string
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* opt: options object
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*/
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exports.froth = function(num, max, opt={
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// Set to true to include tests with...
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none: true, // Empty string
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whitespace: true, // Various whitespace chars
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quotes: true, // Combinations of quotes
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backslashing: true, // Combinations of backslashes
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symbols: true, // Various symbols
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foreign: true, // Foreign chars
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alphanumeric: true, // Ordinary letters and numbers
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} ){
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let (chars,tests) = []
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// Whitespace characters
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if (opt.whitespace) chars.concat([
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' ', // Space
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' ', // Tab
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'\n', // Newline
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'\r', // Return
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'\r\n', // Carrage return
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])
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// Quotation characters
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if (opt.quotes) chars.concat([
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'\'', '\'\'', '\'\'\'', // Single quotes
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'"', '""', '"""', // Double quotes
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'`', '``', '```', // Backticks
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])
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// Backslashes
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if (opt.backslashing) chars.concat([
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'\\', '\\\\',
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])
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// Symbols
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if (opt.symbols) chars.concat(
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'°~!@#$%€^&*()-_─=+[]{}|;:,./<>?¿¹²³¼½¬ł€¶ŧ←↓→»«¢„“”·…–'.split('')
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)
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// Foreign characters
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if (opt.foreign) chars.concat(
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'ßöäüñáóíúýéâêîôûŷàèìòùảẻỉỏỷÿïøþłĸŋđðſæµёйцукенгшщзхъэждлорпавыфячсмитьбюЁЙЦУКЕНГШЩЗХЪЭЖДЛОРПАВЫФЯЧСМИТЬБЮ'.split('')
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)
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// Ordinary letters and numbers
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if (opt.alphanumeric) chars.concat(
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'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'.split(''),
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)
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const min = (none)? 0 : 1
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// Add tests until we have enough tests
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for (let n=0; n<num; n++) {
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// Pick a random number from min to max
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len = Math.floor(Math.random() * (max - min + 1)) + min
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// Create a string of that length
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let s = ''
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for (let l=0; l<len; l++) {
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s += chars[Math.floor(Math.random()*chars.length)]
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}
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// Add that string to the tests
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tests.push(s)
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}
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return tests
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}
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