From 2deff321e347e2ca6c419c5d98b82fe2f5595a03 Mon Sep 17 00:00:00 2001
From: =?utf8?q?J=C3=A9r=C3=B4me=20Benoit?= <jerome.benoit@sap.com>
Date: Sat, 22 Oct 2022 10:38:59 +0200
Subject: [PATCH] Add empty array benchmark
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Signed-off-by: Jérôme Benoit <jerome.benoit@sap.com>
---
 busy-wait.js   | 10 +++++-----
 empty-array.js | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++
 fibonacci.js   |  8 ++++----
 package.json   |  1 +
 4 files changed, 61 insertions(+), 9 deletions(-)
 create mode 100644 empty-array.js

diff --git a/busy-wait.js b/busy-wait.js
index f2d10f3..46e5853 100644
--- a/busy-wait.js
+++ b/busy-wait.js
@@ -57,19 +57,19 @@ function setIntervalTimeoutBusyWait (timeoutMs, intervalMs = interval) {
 }
 
 suite
-  .add('dummyTimeoutBusyWait', function () {
+  .add('dummyTimeoutBusyWait', () => {
     dummyTimeoutBusyWait(timeout)
   })
-  .add('sleepTimeoutBusyWait', async function () {
+  .add('sleepTimeoutBusyWait', async () => {
     sleepTimeoutBusyWait(timeout)
   })
-  .add('divideAndConquerTimeoutBusyWait', async function () {
+  .add('divideAndConquerTimeoutBusyWait', async () => {
     await divideAndConquerTimeoutBusyWait(timeout)
   })
-  .add('setIntervalTimeoutBusyWait', function () {
+  .add('setIntervalTimeoutBusyWait', () => {
     setIntervalTimeoutBusyWait(timeout)
   })
-  .on('cycle', function (event) {
+  .on('cycle', event => {
     console.log(event.target.toString())
   })
   .on('complete', function () {
diff --git a/empty-array.js b/empty-array.js
new file mode 100644
index 0000000..9f93d32
--- /dev/null
+++ b/empty-array.js
@@ -0,0 +1,51 @@
+const Benchmark = require('benchmark')
+const { LIST_FORMATTER } = require('./benchmark-utils')
+
+const suite = new Benchmark.Suite()
+
+let testArray = [
+  83, 93, 27, 29, 2828, 234, 23, 56, 32, 56, 67, 77, 32, 45, 93, 17, 28, 83, 62,
+  99, 36, 28, 93, 27, 29, 2828, 234, 23, 56, 32, 56, 67, 77, 32, 45, 93, 17, 28,
+  83, 62, 99, 36, 28, 93, 27, 29, 2828, 234, 23, 56, 32, 56, 67, 77, 32, 45, 93,
+  17, 28, 83, 62, 99, 36, 28, 93, 27, 29, 2828, 234, 23, 56, 32, 56, 67, 77, 32,
+  45, 93, 17, 28, 83, 62, 99, 36, 28, 93, 27, 29, 2828, 234, 23, 56, 32, 56, 67,
+  77, 32, 45, 93, 17, 28, 83, 62, 99, 36, 28, 93, 27, 29, 2828, 234, 23, 56, 32,
+  56, 67, 77, 32, 45, 93, 17, 28, 83, 62, 99, 36, 28, 93, 27, 29, 2828, 234, 23,
+  56, 32, 56, 67, 77, 32, 45, 93, 17, 28, 83, 62, 99, 36, 28, 93, 27, 29, 2828,
+  234, 23, 56, 32, 56, 67, 77, 32, 45, 93, 17, 28, 83, 62, 99, 36, 28, 93, 27,
+  29, 2828, 234, 23, 56, 32, 56, 67, 77, 32, 45, 93, 17, 28, 83, 62, 99, 36, 28,
+  93, 27, 29, 2828, 234, 23, 56, 32, 56, 67, 77, 32, 45, 93, 17, 28, 83, 62, 99,
+  36, 28
+]
+
+suite
+  .add('length = 0', () => {
+    testArray.length = 0
+  })
+  .add('pop loop', async () => {
+    while (testArray.length > 0) {
+      testArray.pop()
+    }
+  })
+  .add('splice', async () => {
+    testArray.splice(0, testArray.length)
+  })
+  .add('shift loop', () => {
+    while (testArray.length > 0) {
+      testArray.shift()
+    }
+  })
+  .add('new init', () => {
+    testArray = []
+  })
+  .on('cycle', event => {
+    console.log(event.target.toString())
+  })
+  .on('complete', function () {
+    console.log(
+      'Fastest is ' + LIST_FORMATTER.format(this.filter('fastest').map('name'))
+    )
+    // eslint-disable-next-line n/no-process-exit
+    process.exit()
+  })
+  .run()
diff --git a/fibonacci.js b/fibonacci.js
index 4a52de4..729fe92 100644
--- a/fibonacci.js
+++ b/fibonacci.js
@@ -51,16 +51,16 @@ function fibonacciRecursionMemoization (num, memo) {
 }
 
 suite
-  .add('fibonacciLoop', function () {
+  .add('fibonacciLoop', () => {
     fibonacciLoop(number)
   })
-  .add('fibonacciRecursion', function () {
+  .add('fibonacciRecursion', () => {
     fibonacciRecursion(number)
   })
-  .add('fibonacciRecursionMemoization', function () {
+  .add('fibonacciRecursionMemoization', () => {
     fibonacciRecursionMemoization(number)
   })
-  .on('cycle', function (event) {
+  .on('cycle', event => {
     console.log(event.target.toString())
   })
   .on('complete', function () {
diff --git a/package.json b/package.json
index 5c54c47..ed3240f 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
   },
   "scripts": {
     "benchmark:busy-wait": "node busy-wait.js",
+    "benchmark:empty-array": "node empty-array.js",
     "benchmark:quick-select": "node quick-select.js",
     "benchmark:promise-handling": "node promise-handling.js",
     "benchmark:fibonacci": "node fibonacci.js",
-- 
2.34.1