test: add benchmark tests for es

Added parallel test benchmark for es

PR-URL: https://github.com/nodejs/node/pull/16076
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 17 insertions, 10 deletions

diff --git a/benchmark/es/string-repeat.js b/benchmark/es/string-repeat.js
index a6b389033a..1ddc7db78c 100644
--- a/benchmark/es/string-repeat.js
+++ b/benchmark/es/string-repeat.js
@@ -19,16 +19,23 @@ function main(conf) {
 
   let str;
 
-  if (conf.mode === 'Array') {
-    bench.start();
-    for (let i = 0; i < n; i++)
-      str = new Array(size + 1).join(character);
-    bench.end(n);
-  } else {
-    bench.start();
-    for (let i = 0; i < n; i++)
-      str = character.repeat(size);
-    bench.end(n);
+  switch (conf.mode) {
+    case '':
+      // Empty string falls through to next line as default, mostly for tests.
+    case 'Array':
+      bench.start();
+      for (let i = 0; i < n; i++)
+        str = new Array(size + 1).join(character);
+      bench.end(n);
+      break;
+    case 'repeat':
+      bench.start();
+      for (let i = 0; i < n; i++)
+        str = character.repeat(size);
+      bench.end(n);
+      break;
+    default:
+      throw new Error('Unexpected method');
   }
 
   assert.strictEqual([...str].length, size);