fix: fix var naming, add some test

src/tcp.client.ts

@@ -41,17 +41,17 @@ export const sendCommandWithResponse = (s: Socket) =>
   (command: number, payload: Buffer): Promise<CommandResponse> => {
 
     const payloadSize = payload.length + COMMAND_LENGTH;
-    let buffer = Buffer.alloc(8);
+    const head = Buffer.alloc(8);
 
-    buffer.writeUint32LE(payloadSize, 0);
-    buffer.writeUint32LE(command, 4);
+    head.writeUint32LE(payloadSize, 0);
+    head.writeUint32LE(command, 4);
 
     console.log(
-      '==> CMD', buffer.readInt32LE(4),
+      '==> CMD', head.readInt32LE(4),
       translateCommandCode(command),
-      'LENGTH', buffer.readInt32LE(0));
+      'LENGTH', head.readInt32LE(0));
 
-    const cmd = Buffer.concat([buffer, payload]);
+    const cmd = Buffer.concat([head, payload]);
     console.log('==> sending cmd', command, cmd /**, cmd.toString()*/);
     console.log('==> socket write', s.write(cmd));
 

src/wire/token/delete-token.command.test.ts

@@ -0,0 +1,39 @@
+
+import { describe, it } from 'node:test';
+import assert from 'node:assert/strict';
+import { DELETE_TOKEN } from './delete-token.command.js';
+
+describe('DeleteToken', () => {
+
+  describe('serialize', () => {
+
+    const name = 'test-token';
+
+    it('serialize 1 name into buffer', () => {
+
+      assert.deepEqual(
+        DELETE_TOKEN.serialize(name).length,
+        1 + name.length
+      );
+    });
+
+    it('throw on name < 1', () => {
+      assert.throws(
+        () => DELETE_TOKEN.serialize('')
+      );
+    });
+
+    it("throw on name > 255 bytes", () => {
+      assert.throws(
+        () => DELETE_TOKEN.serialize("YoLo".repeat(65))
+      );
+    });
+
+    it("throw on name > 255 bytes - utf8 version", () => {
+      assert.throws(
+        () => DELETE_TOKEN.serialize("¥Ø£Ø".repeat(33))
+      );
+    });
+
+  });
+});