[Init] Initial commit - NetMesh terminal manager

components/terminal/runtime/serialLocalEcho.test.ts

@@ -0,0 +1,22 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import { formatSerialLocalEcho } from "./serialLocalEcho";
+
+test("formatSerialLocalEcho echoes printable input and normalizes newlines", () => {
+  assert.equal(formatSerialLocalEcho("show version"), "show version");
+  assert.equal(formatSerialLocalEcho("\r"), "\r\n");
+  assert.equal(formatSerialLocalEcho("\n"), "\r\n");
+  assert.equal(formatSerialLocalEcho("\r\n"), "\r\n");
+  assert.equal(formatSerialLocalEcho("one\ntwo"), "one\r\ntwo");
+});
+
+test("formatSerialLocalEcho renders local editing control keys", () => {
+  assert.equal(formatSerialLocalEcho("\x7f"), "\b \b");
+  assert.equal(formatSerialLocalEcho("\b"), "\b \b");
+  assert.equal(formatSerialLocalEcho("\x03"), "^C");
+});
+
+test("formatSerialLocalEcho ignores single non-display control input", () => {
+  assert.equal(formatSerialLocalEcho("\x15"), "");
+});