From 18a684ab1c20914e13c27bc10e20bda6396ea38d Mon Sep 17 00:00:00 2001
From: Thiago Padilha <thiago@padilha.cc>
Date: Sat, 8 May 2021 18:31:40 -0300
Subject: fix: TextEncoder#encodeInto spec compliance + perf gains (#10129)

---
 cli/tests/text_encoder_into_perf.js | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 cli/tests/text_encoder_into_perf.js

(limited to 'cli/tests/text_encoder_into_perf.js')

diff --git a/cli/tests/text_encoder_into_perf.js b/cli/tests/text_encoder_into_perf.js
new file mode 100644
index 000000000..8d60e9f00
--- /dev/null
+++ b/cli/tests/text_encoder_into_perf.js
@@ -0,0 +1,34 @@
+const mixed = "@Ā๐😀";
+
+function generateRandom(bytes) {
+  let result = "";
+  let i = 0;
+  while (i < bytes) {
+    const toAdd = Math.floor(Math.random() * Math.min(4, bytes - i));
+    switch (toAdd) {
+      case 0:
+        result += mixed[0];
+        i++;
+        break;
+      case 1:
+        result += mixed[1];
+        i++;
+        break;
+      case 2:
+        result += mixed[2];
+        i++;
+        break;
+      case 3:
+        result += mixed[3];
+        result += mixed[4];
+        i += 2;
+        break;
+    }
+  }
+  return result;
+}
+
+const randomData = generateRandom(1024);
+const encoder = new TextEncoder();
+const targetBuffer = new Uint8Array(randomData.length * 4);
+for (let i = 0; i < 10_000; i++) encoder.encodeInto(randomData, targetBuffer);
-- 
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