How to use significand method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

decimal128.js

Source:decimal128.js

`1'use strict';2var Long = require('./long');3var PARSE_STRING_REGEXP = /^(\+|-)?(\d+|(\d*\.\d*))?(E|e)?([-+])?(\d+)?\$/;4var PARSE_INF_REGEXP = /^(\+|-)?(Infinity|inf)\$/i;5var PARSE_NAN_REGEXP = /^(\+|-)?NaN\$/i;6var EXPONENT_MAX = 6111;7var EXPONENT_MIN = -6176;8var EXPONENT_BIAS = 6176;9var MAX_DIGITS = 34;10// Nan value bits as 32 bit values (due to lack of longs)11var NAN_BUFFER = [12 0x7c,13 0x00,14 0x00,15 0x00,16 0x00,17 0x00,18 0x00,19 0x00,20 0x00,21 0x00,22 0x00,23 0x00,24 0x00,25 0x00,26 0x00,27 0x0028].reverse();29// Infinity value bits 32 bit values (due to lack of longs)30var INF_NEGATIVE_BUFFER = [31 0xf8,32 0x00,33 0x00,34 0x00,35 0x00,36 0x00,37 0x00,38 0x00,39 0x00,40 0x00,41 0x00,42 0x00,43 0x00,44 0x00,45 0x00,46 0x0047].reverse();48var INF_POSITIVE_BUFFER = [49 0x78,50 0x00,51 0x00,52 0x00,53 0x00,54 0x00,55 0x00,56 0x00,57 0x00,58 0x00,59 0x00,60 0x00,61 0x00,62 0x00,63 0x00,64 0x0065].reverse();66var EXPONENT_REGEX = /^([-+])?(\d+)?\$/;67var utils = require('./parser/utils');68// Detect if the value is a digit69var isDigit = function(value) {70 return !isNaN(parseInt(value, 10));71};72// Divide two uint128 values73var divideu128 = function(value) {74 var DIVISOR = Long.fromNumber(1000 * 1000 * 1000);75 var _rem = Long.fromNumber(0);76 var i = 0;77 if (!value.parts[0] && !value.parts[1] && !value.parts[2] && !value.parts[3]) {78 return { quotient: value, rem: _rem };79 }80 for (i = 0; i <= 3; i++) {81 // Adjust remainder to match value of next dividend82 _rem = _rem.shiftLeft(32);83 // Add the divided to _rem84 _rem = _rem.add(new Long(value.parts[i], 0));85 value.parts[i] = _rem.div(DIVISOR).low_;86 _rem = _rem.modulo(DIVISOR);87 }88 return { quotient: value, rem: _rem };89};90// Multiply two Long values and return the 128 bit value91var multiply64x2 = function(left, right) {92 if (!left && !right) {93 return { high: Long.fromNumber(0), low: Long.fromNumber(0) };94 }95 var leftHigh = left.shiftRightUnsigned(32);96 var leftLow = new Long(left.getLowBits(), 0);97 var rightHigh = right.shiftRightUnsigned(32);98 var rightLow = new Long(right.getLowBits(), 0);99 var productHigh = leftHigh.multiply(rightHigh);100 var productMid = leftHigh.multiply(rightLow);101 var productMid2 = leftLow.multiply(rightHigh);102 var productLow = leftLow.multiply(rightLow);103 productHigh = productHigh.add(productMid.shiftRightUnsigned(32));104 productMid = new Long(productMid.getLowBits(), 0)105 .add(productMid2)106 .add(productLow.shiftRightUnsigned(32));107 productHigh = productHigh.add(productMid.shiftRightUnsigned(32));108 productLow = productMid.shiftLeft(32).add(new Long(productLow.getLowBits(), 0));109 // Return the 128 bit result110 return { high: productHigh, low: productLow };111};112var lessThan = function(left, right) {113 // Make values unsigned114 var uhleft = left.high_ >>> 0;115 var uhright = right.high_ >>> 0;116 // Compare high bits first117 if (uhleft < uhright) {118 return true;119 } else if (uhleft === uhright) {120 var ulleft = left.low_ >>> 0;121 var ulright = right.low_ >>> 0;122 if (ulleft < ulright) return true;123 }124 return false;125};126// var longtoHex = function(value) {127// var buffer = utils.allocBuffer(8);128// var index = 0;129// // Encode the low 64 bits of the decimal130// // Encode low bits131// buffer[index++] = value.low_ & 0xff;132// buffer[index++] = (value.low_ >> 8) & 0xff;133// buffer[index++] = (value.low_ >> 16) & 0xff;134// buffer[index++] = (value.low_ >> 24) & 0xff;135// // Encode high bits136// buffer[index++] = value.high_ & 0xff;137// buffer[index++] = (value.high_ >> 8) & 0xff;138// buffer[index++] = (value.high_ >> 16) & 0xff;139// buffer[index++] = (value.high_ >> 24) & 0xff;140// return buffer.reverse().toString('hex');141// };142// var int32toHex = function(value) {143// var buffer = utils.allocBuffer(4);144// var index = 0;145// // Encode the low 64 bits of the decimal146// // Encode low bits147// buffer[index++] = value & 0xff;148// buffer[index++] = (value >> 8) & 0xff;149// buffer[index++] = (value >> 16) & 0xff;150// buffer[index++] = (value >> 24) & 0xff;151// return buffer.reverse().toString('hex');152// };153/**154 * A class representation of the BSON Decimal128 type.155 *156 * @class157 * @param {Buffer} bytes a buffer containing the raw Decimal128 bytes.158 * @return {Double}159 */160var Decimal128 = function(bytes) {161 this._bsontype = 'Decimal128';162 this.bytes = bytes;163};164/**165 * Create a Decimal128 instance from a string representation166 *167 * @method168 * @param {string} string a numeric string representation.169 * @return {Decimal128} returns a Decimal128 instance.170 */171Decimal128.fromString = function(string) {172 // Parse state tracking173 var isNegative = false;174 var sawRadix = false;175 var foundNonZero = false;176 // Total number of significant digits (no leading or trailing zero)177 var significantDigits = 0;178 // Total number of significand digits read179 var nDigitsRead = 0;180 // Total number of digits (no leading zeros)181 var nDigits = 0;182 // The number of the digits after radix183 var radixPosition = 0;184 // The index of the first non-zero in *str*185 var firstNonZero = 0;186 // Digits Array187 var digits = [0];188 // The number of digits in digits189 var nDigitsStored = 0;190 // Insertion pointer for digits191 var digitsInsert = 0;192 // The index of the first non-zero digit193 var firstDigit = 0;194 // The index of the last digit195 var lastDigit = 0;196 // Exponent197 var exponent = 0;198 // loop index over array199 var i = 0;200 // The high 17 digits of the significand201 var significandHigh = [0, 0];202 // The low 17 digits of the significand203 var significandLow = [0, 0];204 // The biased exponent205 var biasedExponent = 0;206 // Read index207 var index = 0;208 // Trim the string209 string = string.trim();210 // Naively prevent against REDOS attacks.211 // TODO: implementing a custom parsing for this, or refactoring the regex would yield212 // further gains.213 if (string.length >= 7000) {214 throw new Error('' + string + ' not a valid Decimal128 string');215 }216 // Results217 var stringMatch = string.match(PARSE_STRING_REGEXP);218 var infMatch = string.match(PARSE_INF_REGEXP);219 var nanMatch = string.match(PARSE_NAN_REGEXP);220 // Validate the string221 if ((!stringMatch && !infMatch && !nanMatch) || string.length === 0) {222 throw new Error('' + string + ' not a valid Decimal128 string');223 }224 // Check if we have an illegal exponent format225 if (stringMatch && stringMatch[4] && stringMatch[2] === undefined) {226 throw new Error('' + string + ' not a valid Decimal128 string');227 }228 // Get the negative or positive sign229 if (string[index] === '+' || string[index] === '-') {230 isNegative = string[index++] === '-';231 }232 // Check if user passed Infinity or NaN233 if (!isDigit(string[index]) && string[index] !== '.') {234 if (string[index] === 'i' || string[index] === 'I') {235 return new Decimal128(utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER));236 } else if (string[index] === 'N') {237 return new Decimal128(utils.toBuffer(NAN_BUFFER));238 }239 }240 // Read all the digits241 while (isDigit(string[index]) || string[index] === '.') {242 if (string[index] === '.') {243 if (sawRadix) {244 return new Decimal128(utils.toBuffer(NAN_BUFFER));245 }246 sawRadix = true;247 index = index + 1;248 continue;249 }250 if (nDigitsStored < 34) {251 if (string[index] !== '0' || foundNonZero) {252 if (!foundNonZero) {253 firstNonZero = nDigitsRead;254 }255 foundNonZero = true;256 // Only store 34 digits257 digits[digitsInsert++] = parseInt(string[index], 10);258 nDigitsStored = nDigitsStored + 1;259 }260 }261 if (foundNonZero) {262 nDigits = nDigits + 1;263 }264 if (sawRadix) {265 radixPosition = radixPosition + 1;266 }267 nDigitsRead = nDigitsRead + 1;268 index = index + 1;269 }270 if (sawRadix && !nDigitsRead) {271 throw new Error('' + string + ' not a valid Decimal128 string');272 }273 // Read exponent if exists274 if (string[index] === 'e' || string[index] === 'E') {275 // Read exponent digits276 var match = string.substr(++index).match(EXPONENT_REGEX);277 // No digits read278 if (!match || !match[2]) {279 return new Decimal128(utils.toBuffer(NAN_BUFFER));280 }281 // Get exponent282 exponent = parseInt(match[0], 10);283 // Adjust the index284 index = index + match[0].length;285 }286 // Return not a number287 if (string[index]) {288 return new Decimal128(utils.toBuffer(NAN_BUFFER));289 }290 // Done reading input291 // Find first non-zero digit in digits292 firstDigit = 0;293 if (!nDigitsStored) {294 firstDigit = 0;295 lastDigit = 0;296 digits[0] = 0;297 nDigits = 1;298 nDigitsStored = 1;299 significantDigits = 0;300 } else {301 lastDigit = nDigitsStored - 1;302 significantDigits = nDigits;303 if (exponent !== 0 && significantDigits !== 1) {304 while (string[firstNonZero + significantDigits - 1] === '0') {305 significantDigits = significantDigits - 1;306 }307 }308 }309 // Normalization of exponent310 // Correct exponent based on radix position, and shift significand as needed311 // to represent user input312 // Overflow prevention313 if (exponent <= radixPosition && radixPosition - exponent > 1 << 14) {314 exponent = EXPONENT_MIN;315 } else {316 exponent = exponent - radixPosition;317 }318 // Attempt to normalize the exponent319 while (exponent > EXPONENT_MAX) {320 // Shift exponent to significand and decrease321 lastDigit = lastDigit + 1;322 if (lastDigit - firstDigit > MAX_DIGITS) {323 // Check if we have a zero then just hard clamp, otherwise fail324 var digitsString = digits.join('');325 if (digitsString.match(/^0+\$/)) {326 exponent = EXPONENT_MAX;327 break;328 } else {329 return new Decimal128(utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER));330 }331 }332 exponent = exponent - 1;333 }334 while (exponent < EXPONENT_MIN || nDigitsStored < nDigits) {335 // Shift last digit336 if (lastDigit === 0) {337 exponent = EXPONENT_MIN;338 significantDigits = 0;339 break;340 }341 if (nDigitsStored < nDigits) {342 // adjust to match digits not stored343 nDigits = nDigits - 1;344 } else {345 // adjust to round346 lastDigit = lastDigit - 1;347 }348 if (exponent < EXPONENT_MAX) {349 exponent = exponent + 1;350 } else {351 // Check if we have a zero then just hard clamp, otherwise fail352 digitsString = digits.join('');353 if (digitsString.match(/^0+\$/)) {354 exponent = EXPONENT_MAX;355 break;356 } else {357 return new Decimal128(utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER));358 }359 }360 }361 // Round362 // We've normalized the exponent, but might still need to round.363 if (lastDigit - firstDigit + 1 < significantDigits && string[significantDigits] !== '0') {364 var endOfString = nDigitsRead;365 // If we have seen a radix point, 'string' is 1 longer than we have366 // documented with ndigits_read, so inc the position of the first nonzero367 // digit and the position that digits are read to.368 if (sawRadix && exponent === EXPONENT_MIN) {369 firstNonZero = firstNonZero + 1;370 endOfString = endOfString + 1;371 }372 var roundDigit = parseInt(string[firstNonZero + lastDigit + 1], 10);373 var roundBit = 0;374 if (roundDigit >= 5) {375 roundBit = 1;376 if (roundDigit === 5) {377 roundBit = digits[lastDigit] % 2 === 1;378 for (i = firstNonZero + lastDigit + 2; i < endOfString; i++) {379 if (parseInt(string[i], 10)) {380 roundBit = 1;381 break;382 }383 }384 }385 }386 if (roundBit) {387 var dIdx = lastDigit;388 for (; dIdx >= 0; dIdx--) {389 if (++digits[dIdx] > 9) {390 digits[dIdx] = 0;391 // overflowed most significant digit392 if (dIdx === 0) {393 if (exponent < EXPONENT_MAX) {394 exponent = exponent + 1;395 digits[dIdx] = 1;396 } else {397 return new Decimal128(398 utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER)399 );400 }401 }402 } else {403 break;404 }405 }406 }407 }408 // Encode significand409 // The high 17 digits of the significand410 significandHigh = Long.fromNumber(0);411 // The low 17 digits of the significand412 significandLow = Long.fromNumber(0);413 // read a zero414 if (significantDigits === 0) {415 significandHigh = Long.fromNumber(0);416 significandLow = Long.fromNumber(0);417 } else if (lastDigit - firstDigit < 17) {418 dIdx = firstDigit;419 significandLow = Long.fromNumber(digits[dIdx++]);420 significandHigh = new Long(0, 0);421 for (; dIdx <= lastDigit; dIdx++) {422 significandLow = significandLow.multiply(Long.fromNumber(10));423 significandLow = significandLow.add(Long.fromNumber(digits[dIdx]));424 }425 } else {426 dIdx = firstDigit;427 significandHigh = Long.fromNumber(digits[dIdx++]);428 for (; dIdx <= lastDigit - 17; dIdx++) {429 significandHigh = significandHigh.multiply(Long.fromNumber(10));430 significandHigh = significandHigh.add(Long.fromNumber(digits[dIdx]));431 }432 significandLow = Long.fromNumber(digits[dIdx++]);433 for (; dIdx <= lastDigit; dIdx++) {434 significandLow = significandLow.multiply(Long.fromNumber(10));435 significandLow = significandLow.add(Long.fromNumber(digits[dIdx]));436 }437 }438 var significand = multiply64x2(significandHigh, Long.fromString('100000000000000000'));439 significand.low = significand.low.add(significandLow);440 if (lessThan(significand.low, significandLow)) {441 significand.high = significand.high.add(Long.fromNumber(1));442 }443 // Biased exponent444 biasedExponent = exponent + EXPONENT_BIAS;445 var dec = { low: Long.fromNumber(0), high: Long.fromNumber(0) };446 // Encode combination, exponent, and significand.447 if (448 significand.high449 .shiftRightUnsigned(49)450 .and(Long.fromNumber(1))451 .equals(Long.fromNumber)452 ) {453 // Encode '11' into bits 1 to 3454 dec.high = dec.high.or(Long.fromNumber(0x3).shiftLeft(61));455 dec.high = dec.high.or(456 Long.fromNumber(biasedExponent).and(Long.fromNumber(0x3fff).shiftLeft(47))457 );458 dec.high = dec.high.or(significand.high.and(Long.fromNumber(0x7fffffffffff)));459 } else {460 dec.high = dec.high.or(Long.fromNumber(biasedExponent & 0x3fff).shiftLeft(49));461 dec.high = dec.high.or(significand.high.and(Long.fromNumber(0x1ffffffffffff)));462 }463 dec.low = significand.low;464 // Encode sign465 if (isNegative) {466 dec.high = dec.high.or(Long.fromString('9223372036854775808'));467 }468 // Encode into a buffer469 var buffer = utils.allocBuffer(16);470 index = 0;471 // Encode the low 64 bits of the decimal472 // Encode low bits473 buffer[index++] = dec.low.low_ & 0xff;474 buffer[index++] = (dec.low.low_ >> 8) & 0xff;475 buffer[index++] = (dec.low.low_ >> 16) & 0xff;476 buffer[index++] = (dec.low.low_ >> 24) & 0xff;477 // Encode high bits478 buffer[index++] = dec.low.high_ & 0xff;479 buffer[index++] = (dec.low.high_ >> 8) & 0xff;480 buffer[index++] = (dec.low.high_ >> 16) & 0xff;481 buffer[index++] = (dec.low.high_ >> 24) & 0xff;482 // Encode the high 64 bits of the decimal483 // Encode low bits484 buffer[index++] = dec.high.low_ & 0xff;485 buffer[index++] = (dec.high.low_ >> 8) & 0xff;486 buffer[index++] = (dec.high.low_ >> 16) & 0xff;487 buffer[index++] = (dec.high.low_ >> 24) & 0xff;488 // Encode high bits489 buffer[index++] = dec.high.high_ & 0xff;490 buffer[index++] = (dec.high.high_ >> 8) & 0xff;491 buffer[index++] = (dec.high.high_ >> 16) & 0xff;492 buffer[index++] = (dec.high.high_ >> 24) & 0xff;493 // Return the new Decimal128494 return new Decimal128(buffer);495};496// Extract least significant 5 bits497var COMBINATION_MASK = 0x1f;498// Extract least significant 14 bits499var EXPONENT_MASK = 0x3fff;500// Value of combination field for Inf501var COMBINATION_INFINITY = 30;502// Value of combination field for NaN503var COMBINATION_NAN = 31;504// Value of combination field for NaN505// var COMBINATION_SNAN = 32;506// decimal128 exponent bias507EXPONENT_BIAS = 6176;508/**509 * Create a string representation of the raw Decimal128 value510 *511 * @method512 * @return {string} returns a Decimal128 string representation.513 */514Decimal128.prototype.toString = function() {515 // Note: bits in this routine are referred to starting at 0,516 // from the sign bit, towards the coefficient.517 // bits 0 - 31518 var high;519 // bits 32 - 63520 var midh;521 // bits 64 - 95522 var midl;523 // bits 96 - 127524 var low;525 // bits 1 - 5526 var combination;527 // decoded biased exponent (14 bits)528 var biased_exponent;529 // the number of significand digits530 var significand_digits = 0;531 // the base-10 digits in the significand532 var significand = new Array(36);533 for (var i = 0; i < significand.length; i++) significand[i] = 0;534 // read pointer into significand535 var index = 0;536 // unbiased exponent537 var exponent;538 // the exponent if scientific notation is used539 var scientific_exponent;540 // true if the number is zero541 var is_zero = false;542 // the most signifcant significand bits (50-46)543 var significand_msb;544 // temporary storage for significand decoding545 var significand128 = { parts: new Array(4) };546 // indexing variables547 i;548 var j, k;549 // Output string550 var string = [];551 // Unpack index552 index = 0;553 // Buffer reference554 var buffer = this.bytes;555 // Unpack the low 64bits into a long556 low =557 buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24);558 midl =559 buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24);560 // Unpack the high 64bits into a long561 midh =562 buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24);563 high =564 buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24);565 // Unpack index566 index = 0;567 // Create the state of the decimal568 var dec = {569 low: new Long(low, midl),570 high: new Long(midh, high)571 };572 if (dec.high.lessThan(Long.ZERO)) {573 string.push('-');574 }575 // Decode combination field and exponent576 combination = (high >> 26) & COMBINATION_MASK;577 if (combination >> 3 === 3) {578 // Check for 'special' values579 if (combination === COMBINATION_INFINITY) {580 return string.join('') + 'Infinity';581 } else if (combination === COMBINATION_NAN) {582 return 'NaN';583 } else {584 biased_exponent = (high >> 15) & EXPONENT_MASK;585 significand_msb = 0x08 + ((high >> 14) & 0x01);586 }587 } else {588 significand_msb = (high >> 14) & 0x07;589 biased_exponent = (high >> 17) & EXPONENT_MASK;590 }591 exponent = biased_exponent - EXPONENT_BIAS;592 // Create string of significand digits593 // Convert the 114-bit binary number represented by594 // (significand_high, significand_low) to at most 34 decimal595 // digits through modulo and division.596 significand128.parts[0] = (high & 0x3fff) + ((significand_msb & 0xf) << 14);597 significand128.parts[1] = midh;598 significand128.parts[2] = midl;599 significand128.parts[3] = low;600 if (601 significand128.parts[0] === 0 &&602 significand128.parts[1] === 0 &&603 significand128.parts[2] === 0 &&604 significand128.parts[3] === 0605 ) {606 is_zero = true;607 } else {608 for (k = 3; k >= 0; k--) {609 var least_digits = 0;610 // Peform the divide611 var result = divideu128(significand128);612 significand128 = result.quotient;613 least_digits = result.rem.low_;614 // We now have the 9 least significant digits (in base 2).615 // Convert and output to string.616 if (!least_digits) continue;617 for (j = 8; j >= 0; j--) {618 // significand[k * 9 + j] = Math.round(least_digits % 10);619 significand[k * 9 + j] = least_digits % 10;620 // least_digits = Math.round(least_digits / 10);621 least_digits = Math.floor(least_digits / 10);622 }623 }624 }625 // Output format options:626 // Scientific - [-]d.dddE(+/-)dd or [-]dE(+/-)dd627 // Regular - ddd.ddd628 if (is_zero) {629 significand_digits = 1;630 significand[index] = 0;631 } else {632 significand_digits = 36;633 i = 0;634 while (!significand[index]) {635 i++;636 significand_digits = significand_digits - 1;637 index = index + 1;638 }639 }640 scientific_exponent = significand_digits - 1 + exponent;641 // The scientific exponent checks are dictated by the string conversion642 // specification and are somewhat arbitrary cutoffs.643 //644 // We must check exponent > 0, because if this is the case, the number645 // has trailing zeros. However, we *cannot* output these trailing zeros,646 // because doing so would change the precision of the value, and would647 // change stored data if the string converted number is round tripped.648 if (scientific_exponent >= 34 || scientific_exponent <= -7 || exponent > 0) {649 // Scientific format650 string.push(significand[index++]);651 significand_digits = significand_digits - 1;652 if (significand_digits) {653 string.push('.');654 }655 for (i = 0; i < significand_digits; i++) {656 string.push(significand[index++]);657 }658 // Exponent659 string.push('E');660 if (scientific_exponent > 0) {661 string.push('+' + scientific_exponent);662 } else {663 string.push(scientific_exponent);664 }665 } else {666 // Regular format with no decimal place667 if (exponent >= 0) {668 for (i = 0; i < significand_digits; i++) {669 string.push(significand[index++]);670 }671 } else {672 var radix_position = significand_digits + exponent;673 // non-zero digits before radix674 if (radix_position > 0) {675 for (i = 0; i < radix_position; i++) {676 string.push(significand[index++]);677 }678 } else {679 string.push('0');680 }681 string.push('.');682 // add leading zeros after radix683 while (radix_position++ < 0) {684 string.push('0');685 }686 for (i = 0; i < significand_digits - Math.max(radix_position - 1, 0); i++) {687 string.push(significand[index++]);688 }689 }690 }691 return string.join('');692};693Decimal128.prototype.toJSON = function() {694 return { \$numberDecimal: this.toString() };695};696module.exports = Decimal128;...`

index.ts

Source:index.ts

`...134 } else {135 throw new Error('The provided string is invalid.')136 }137 }138 get significand(): string {139 return this._significand140 }141 get exponent(): number {142 return this._exponent143 }144 get precision(): number {145 return this._precision146 }147 toString(): string {148 const significand = (149 parseInt(this.significand.slice(0, this.precision), 10) +150 (parseInt(this.significand[this.precision], 10) > 4 ? 1 : 0)151 ).toString()152 return (...`

Using AI Code Generation

`1const fc = require('fast-check');2const significand = require('fast-check-monorepo').significand;3const isSignificand = require('fast-check-monorepo').isSignificand;4const assert = require('assert');5const significands = significand();6fc.assert(fc.property(significands, (s) => {7 assert.ok(isSignificand(s));8}));`

Using AI Code Generation

`1const fc = require("fast-check");2const { significand } = require("fast-check/lib/arbitrary/SignificandArbitrary.js");3const mySignificand = significand();4fc.assert(5 fc.property(mySignificand, (s) => {6 const significand = s.toString();7 return significand.length > 0 && significand[0] !== "0";8 })9);10 [0] Expect property to hold for all values (after 1 shrinks) but it failed on: 0`

Using AI Code Generation

`1const {check} = require('fast-check');2const {significand} = require('fast-check/lib/numbers/significand.js');3const {isSignificand} = require('fast-check/lib/numbers/significand.js');4test('significand should return a number', () => {5 const arb = significand();6 const out = arb.generate(mrng()).value;7 expect(typeof out).toBe('number');8});9test('significand should return a number in the range 0 to 1', () => {10 const arb = significand();11 const out = arb.generate(mrng()).value;12 expect(out).toBeGreaterThanOrEqual(0);13 expect(out).toBeLessThanOrEqual(1);14});15test('significand should return a number with 17 significant digits', () => {16 const arb = significand();17 const out = arb.generate(mrng()).value;18 expect(out.toPrecision(17)).toBe(out);19});20test('significand should return a number with 16 significant digits', () => {21 const arb = significand();22 const out = arb.generate(mrng()).value;23 expect(out.toPrecision(16)).not.toBe(out);24});25test('significand should return a number with 18 significant digits', () => {26 const arb = significand();27 const out = arb.generate(mrng()).value;28 expect(out.toPrecision(18)).not.toBe(out);29});30test('significand should return a number with 17 significant digits', () => {31 const arb = significand();32 const out = arb.generate(mrng()).value;33 expect(out.toPrecision(17)).toBe(out);34});35test('significand should return a number with 17 significant digits', () => {36 const arb = significand();37 const out = arb.generate(mrng()).value`

Using AI Code Generation

`1const fc = require("fast-check-monorepo");2 .double()3 .noBias()4 .noShrink()5 .significand(2);6fc.assert(7 fc.property(arb, (num) => {8 const str = num.toString();9 return str.indexOf("e") === -1 && str.indexOf(".") === -1;10 })11);`

Using AI Code Generation

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

Using AI Code Generation

`1const {significand} = require('fast-check-monorepo');2significand(0.123456789, 3);3const {significand} = require('fast-check-monorepo');4significand(0.123456789, 3);5const {significand} = require('fast-check-monorepo');6significand(0.123456789, 3);7const {significand} = require('fast-check-monorepo');8significand(0.123456789, 3);9const {significand} = require('fast-check-monorepo');10significand(0.123456789, 3);11const {significand} = require('fast-check-monorepo');12significand(0.123456789, 3);13const {significand} = require('fast-check-monorepo');14significand(0.123456789, 3);15const {significand} = require('fast-check-monorepo');16significand(0.123456789, 3);17const {significand} = require('fast-check-monorepo');18significand(0.123456789, 3);`

Using AI Code Generation

`1const fc = require('fast-check');2const { significand } = require('fast-check/lib/arbitrary/SignificandArbitrary.js');3test('significand method returns a number', () => {4 expect(typeof significand()).toBe('number');5});6test('significand method returns a value between 1 and 0', () => {7 expect(significand()).toBeLessThan(1);8 expect(significand()).toBeGreaterThan(0);9});10test('significand method returns a value between 1 and 0', () => {11 expect(significand()).toBeLessThan(1);12 expect(significand()).toBeGreaterThan(0);13});14test('significand method returns a value between 1 and 0', () => {15 expect(significand()).toBeLessThan(1);16 expect(significand()).toBeGreaterThan(0);17});18test('significand method returns a value between 1 and 0', () => {19 expect(significand()).toBeLessThan(1);20 expect(significand()).toBeGreaterThan(0);21});22test('significand method returns a value between 1 and 0', () => {23 expect(significand()).toBeLessThan(1);24 expect(significand()).toBeGreaterThan(0);25});26test('significand method returns a value between 1 and 0', () => {27 expect(significand()).toBeLessThan(1);28 expect(significand()).toBeGreaterThan(0);29});30test('significand method returns a value between 1 and 0', () => {31 expect(significand()).toBeLessThan(1);32 expect(significand()).toBeGreaterThan(0);33});`

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.