update

torch/test/formatter.test.mjs

@@ -0,0 +1,30 @@
+import { describe, it } from 'node:test';
+import assert from 'node:assert';
+import { estimateTokenCount } from '../src/services/memory/formatter.js';
+
+describe('formatter', () => {
+  describe('estimateTokenCount', () => {
+    it('should return 0 for empty string', () => {
+      const result = estimateTokenCount('');
+      assert.strictEqual(result, 0);
+    });
+
+    it('should return 0 for null', () => {
+      const result = estimateTokenCount(null);
+      assert.strictEqual(result, 0);
+    });
+
+    it('should estimate tokens at approximately 4 chars per token', () => {
+      const text = 'This is a test string with some content';
+      const result = estimateTokenCount(text);
+      // 40 chars / 4 = 10 tokens (approximately)
+      assert(result > 0);
+    });
+
+    it('should handle long strings', () => {
+      const text = 'a'.repeat(1000);
+      const result = estimateTokenCount(text);
+      assert.strictEqual(result, 250);
+    });
+  });
+});