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[benchmarks-js.git] / benchmark-utils.js

diff --git a/benchmark-utils.js b/benchmark-utils.js
index 35b47f9c456b1f9cfee33a445d8ddfc9f848adee..a9dd58713e5edc4ae244a4098219660032d79e16 100644 (file)
--- a/benchmark-utils.js
+++ b/benchmark-utils.js
@@ -2,13 +2,20 @@ const crypto = require('crypto')
 
 /**
  * Generate a cryptographically secure random number in the [0,1[ range
- *
  * @returns
  */
 function secureRandom () {
   return crypto.randomBytes(4).readUInt32LE() / 0x100000000
 }
 
+/**
+ *  Generate a cryptographically secure random number in the [0,1[ range
+ * @returns
+ */
+function secureRandomWithRandomValues () {
+  return crypto.getRandomValues(new Uint32Array(1))[0] / 0x100000000
+}
+
 /**
  * @param max
  * @param min
@@ -30,16 +37,16 @@ function generateRandomInteger (max = Number.MAX_SAFE_INTEGER, min = 0) {
  *
  * @param max
  * @param min
- * @param negative
  * @returns
  */
-function generateRandomFloat (max = Number.MAX_VALUE, min = 0, negative = true) {
-  if (max < min || max < 0 || min < 0) {
+function generateRandomFloat (max = Number.MAX_VALUE, min = 0) {
+  if (max < min) {
+    throw new RangeError('Invalid interval')
+  }
+  if (max - min === Infinity) {
     throw new RangeError('Invalid interval')
   }
-  const randomPositiveFloat = crypto.randomBytes(4).readUInt32LE() / 0xffffffff
-  const sign = negative && randomPositiveFloat < 0.5 ? -1 : 1
-  return sign * (randomPositiveFloat * (max - min) + min)
+  return (crypto.randomBytes(4).readUInt32LE() / 0xffffffff) * (max - min) + min
 }
 
 /**
@@ -61,6 +68,26 @@ function generateRandomNumberArray (
   return array
 }
 
+/**
+ *
+ * @param sizeMax
+ * @param numberMax
+ * @param numberGenerator
+ * @returns
+ */
+function generateRandomObject (
+  sizeMax = 500,
+  numberMax = Number.MAX_VALUE,
+  numberGenerator = generateRandomFloat
+) {
+  const size = generateRandomInteger(sizeMax)
+  const object = {}
+  for (let i = 0; i < size; i++) {
+    object[i.toString()] = numberGenerator(numberMax)
+  }
+  return object
+}
+
 /**
  * @param ms
  * @returns
@@ -69,16 +96,12 @@ async function sleep (ms) {
   return new Promise(resolve => setTimeout(resolve, ms))
 }
 
-const LIST_FORMATTER = new Intl.ListFormat('en-US', {
-  style: 'long',
-  type: 'conjunction'
-})
-
 module.exports = {
   generateRandomInteger,
   generateRandomFloat,
   generateRandomNumberArray,
+  generateRandomObject,
   sleep,
   secureRandom,
-  LIST_FORMATTER
+  secureRandomWithRandomValues
 }