import { describe, it, expect } from 'vitest';
import { InMemoryKnowledgeBaseClient } from '../src/dev-client.js';

describe('InMemoryKnowledgeBaseClient', () => {
  describe('retrieve', () => {
    it('returns the seeded passages', async () => {
      const client = new InMemoryKnowledgeBaseClient();
      const results = await client.retrieve({ query: 'vendor onboarding' });
      expect(results).toHaveLength(3);
      expect(results[0].source).toBe('s3://sh-mcp-kb/handbook/vendor-onboarding.md');
      expect(results[0].score).toBe(0.92);
      expect(results[0].passage).toContain('W-9 intake form');
    });

    it('respects maxResults', async () => {
      const client = new InMemoryKnowledgeBaseClient();
      const results = await client.retrieve({ query: 'anything', maxResults: 2 });
      expect(results).toHaveLength(2);
    });

    it('defaults to up to 5 results when maxResults is omitted', async () => {
      const client = new InMemoryKnowledgeBaseClient();
      const results = await client.retrieve({ query: 'anything' });
      expect(results.length).toBeLessThanOrEqual(5);
      expect(results).toHaveLength(3);
    });
  });
});