phase-1: optimize code

tests/LLMAnalyst.test.js

@@ -0,0 +1,47 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+
+// Test the markdown fence stripping logic in isolation —
+// we don't instantiate LLMAnalyst (requires Anthropic SDK + API key).
+// The regex is: raw.replace(/^```(?:json)?\s*/i, '').replace(/```\s*$/i, '').trim()
+
+function stripFences(raw) {
+  return raw
+    .replace(/^```(?:json)?\s*/i, '')
+    .replace(/```\s*$/i, '')
+    .trim();
+}
+
+const VALID_JSON =
+  '{"summary":"test","sentiment":"BULLISH","affectedIndustries":[],"relatedTickers":[]}';
+
+test('stripFences: passes clean JSON through unchanged', () => {
+  assert.equal(stripFences(VALID_JSON), VALID_JSON);
+});
+
+test('stripFences: strips ```json ... ``` fences', () => {
+  const wrapped = '```json\n' + VALID_JSON + '\n```';
+  assert.equal(stripFences(wrapped), VALID_JSON);
+});
+
+test('stripFences: strips ``` ... ``` fences (no language tag)', () => {
+  const wrapped = '```\n' + VALID_JSON + '\n```';
+  assert.equal(stripFences(wrapped), VALID_JSON);
+});
+
+test('stripFences: result is valid parseable JSON', () => {
+  const wrapped = '```json\n' + VALID_JSON + '\n```';
+  const parsed = JSON.parse(stripFences(wrapped));
+  assert.equal(parsed.sentiment, 'BULLISH');
+  assert.equal(parsed.summary, 'test');
+});
+
+test('stripFences: handles no trailing newline before closing fence', () => {
+  const wrapped = '```json\n' + VALID_JSON + '```';
+  assert.equal(stripFences(wrapped), VALID_JSON);
+});
+
+test('stripFences: case-insensitive fence tag', () => {
+  const wrapped = '```JSON\n' + VALID_JSON + '\n```';
+  assert.equal(stripFences(wrapped), VALID_JSON);
+});