test,util: add missing tests and conditions

1) Add missing unit tests by `ucs-2` in different kinds of cases.
2) Add missing unit tests by `usc-2` in different kinds of cases.
3) Fix a bug：We cannot find `ucs-2` in `case 5`'s `if` condition after
`toLowerCase()`

PR-URL: https://github.com/nodejs/node/pull/21455
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

1 files changed, 17 insertions, 8 deletions

diff --git a/benchmark/util/normalize-encoding.js b/benchmark/util/normalize-encoding.js
index 96eab1912d..65cf5b1b0c 100644
--- a/benchmark/util/normalize-encoding.js
+++ b/benchmark/util/normalize-encoding.js
@@ -4,18 +4,25 @@ const common = require('../common.js');
 const assert = require('assert');
 
 const groupedInputs = {
-  group_common: ['undefined', 'utf8', 'utf-8', 'base64', 'binary', 'latin1'],
-  group_upper: ['UTF-8', 'UTF8', 'UCS2', 'UTF-16LE', 'UTF16LE', 'BASE64'],
-  group_uncommon: [ 'foo', '1', 'false', 'undefined', '[]'],
+  group_common: ['undefined', 'utf8', 'utf-8', 'base64',
+                 'binary', 'latin1', 'ucs-2', 'usc-2'],
+  group_upper: ['UTF-8', 'UTF8', 'UCS2', 'UTF-16LE',
+                'UTF16LE', 'BASE64', 'UCS-2', 'USC-2'],
+  group_uncommon: ['foo', '1', 'false', 'undefined', '[]', '{}'],
   group_misc: ['', 'utf16le', 'usc2', 'hex', 'HEX', 'BINARY']
 };
 
 const inputs = [
-  '', 'utf8', 'utf-8', 'UTF-8',
-  'UTF8', 'Utf8', 'uTf-8', 'utF-8', 'ucs2',
-  'UCS2', 'utf16le', 'utf-16le', 'UTF-16LE', 'UTF16LE',
+  '',
+  'utf8', 'utf-8', 'UTF-8',
+  'UTF8', 'Utf8', 'uTf-8', 'utF-8',
+  'ucs2', 'UCS2', 'UcS2',
+  'USC2', 'usc2', 'uSc2',
+  'ucs-2', 'UCS-2', 'UcS-2',
+  'usc-2', 'USC-2', 'uSc-2',
+  'utf16le', 'utf-16le', 'UTF-16LE', 'UTF16LE',
   'binary', 'BINARY', 'latin1', 'base64', 'BASE64',
-  'hex', 'HEX', 'foo', '1', 'false', 'undefined', '[]'];
+  'hex', 'HEX', 'foo', '1', 'false', 'undefined', '[]', '{}'];
 
 const bench = common.createBenchmark(main, {
   input: inputs.concat(Object.keys(groupedInputs)),
@@ -42,6 +49,8 @@ function getInput(input) {
       return [undefined];
     case '[]':
       return [[]];
+    case '{}':
+      return [{}];
     default:
       return [input];
   }
@@ -53,7 +62,7 @@ function main({ input, n }) {
   var noDead = '';
 
   bench.start();
-  for (var i = 0; i < n; i += 1) {
+  for (var i = 0; i < n; ++i) {
     for (var j = 0; j < inputs.length; ++j) {
       noDead = normalizeEncoding(inputs[j]);
     }