refactor: add packetLength option to benchmark

benchmarks/token-parser/done-token.js

@@ -1,21 +1,36 @@
 const { createBenchmark } = require('../common');
 
 const { Parser } = require('../../src/token/token-stream-parser');
+const { AzurePowerShellCredential } = require('@azure/identity');
 
 const bench = createBenchmark(main, {
-  n: [10, 100, 1000],
-  tokenCount: [10, 100, 1000, 10000]
+  n: [100, 1000],
+  tokenCount: [10, 100, 1000, 10000],
+  packetLength: [512, 4096, 32767]
 });
 
-async function * repeat(data, n) {
+/**
+ * @param {Buffer} data
+ * @param {number} n
+ * @param {number} chunkSize
+ */
+async function* repeat(data, n, chunkSize) {
   for (let i = 0; i < n; i++) {
-    yield data;
+    let offset = 0
+
+    while (offset + chunkSize <= data.length) {
+      yield data.slice(offset, offset += chunkSize);
+    }
+
+    if (offset < data.length) {
+      yield data.slice(offset);
+    }
   }
 }
 
-function main({ n, tokenCount }) {
+function main({ n, tokenCount, packetLength }) {
   const data = Buffer.from('FE0000E0000000000000000000'.repeat(tokenCount), 'hex');
-  const parser = new Parser(repeat(data, n), { token: function() { } }, { onDoneProc: () => {} }, {});
+  const parser = new Parser(repeat(data, n, packetLength), { token: function() { } }, { onDoneProc: (token) => {} }, {});
 
   bench.start();