feat: solution for 'Агент с RAG-памятью'

tests/agent.test.js

@@ -0,0 +1,17 @@
+const agent = require('../src/agent');
+const retriever = require('../src/retriever');
+
+beforeAll(async () => {
+  await retriever.loadKnowledgeBase('./knowledge');
+});
+
+test('retriever returns passages', async () => {
+  const passages = await retriever.getRelevantPassages('capital', 2);
+  expect(Array.isArray(passages)).toBe(true);
+  expect(passages.length).toBeLessThanOrEqual(2);
+});
+
+test('agent generates answer', async () => {
+  const answer = await agent.ask('What is the capital of France?');
+  expect(answer.toLowerCase()).toContain('paris');
+});