التقييمات

npm install --save-dev vitest
npx lousho eval

// refund.eval.ts
import { z } from 'zod';
import { createAgent, defineEval, defineTool, includes } from '@lousho/build-ai-agent';
import { mockModel } from '@lousho/build-ai-agent/testing';

const lookupOrder = defineTool({
  name: 'lookup_order',
  description: 'Look up an order by id',
  input: z.object({ orderId: z.string() }),
  execute: ({ orderId }) => ({ orderId, status: 'delivered' }),
});

defineEval({
  name: 'refund flow',
  tags: ['smoke'],
  // A factory builds a fresh agent (and a fresh script) for every case.
  agent: () =>
    createAgent({
      prompt: 'You handle refund requests.',
      tools: [lookupOrder],
      provider: mockModel([
        { toolCalls: [{ name: 'lookup_order', args: { orderId: '42' } }] },
        { text: 'Order 42 can be refunded within 30 days.' },
      ]),
    }),
  async test(t) {
    await t.send('Refund order 42');
    t.completed();
    t.calledTool('lookup_order', { args: { orderId: '42' } });
    t.notCalledTool('issue_refund');
    t.check('mentions policy', t.reply, includes('30 days'));
    t.maxSteps(4);
  },
});

calledTool('lookup_order') failed: tools called were [search_docs, issue_refund]
calledTool('lookup_order', {"args":{"orderId":"41"}}) failed: 'lookup_order' was called 1 time(s) but no call matched the expected args; closest call differs in orderId: expected "41", got "42"
completed() failed: finishReason was 'tool_calls' (the run hit maxSteps while still calling tools)

import { z } from 'zod';
import { createAgent, defineEval, defineTool } from '@lousho/build-ai-agent';
import { mockModel } from '@lousho/build-ai-agent/testing';

const lookupOrder = defineTool({
  name: 'lookup_order',
  description: 'Look up an order by id',
  input: z.object({ orderId: z.string() }),
  execute: ({ orderId }) => ({ orderId }),
});

defineEval({
  name: 'order lookups',
  agent: () =>
    createAgent({
      tools: [lookupOrder],
      provider: mockModel([
        { toolCalls: [{ name: 'lookup_order', args: { orderId: '7' } }] },
        { text: 'Found it.' },
      ]),
    }),
  cases: [
    { input: 'Where is order 7?', orderId: '7' },
    { input: 'Status of #7', orderId: '7', label: 'hash syntax' },
  ],
  async test(t, c) {
    await t.send(c.input);
    t.calledTool('lookup_order', { args: { orderId: c.orderId } });
  },
});

// tone.judge.eval.ts: run with `lousho eval --judge`
import { createAgent, defineEval, atLeast } from '@lousho/build-ai-agent';
import { mockModel } from '@lousho/build-ai-agent/testing';

defineEval({
  name: 'tone',
  agent: createAgent({ provider: mockModel(['Happy to help with that refund!']) }),
  // A real provider in practice; mockModel keeps this example offline.
  judge: { provider: mockModel(['0.9']), model: 'judge-model' },
  async test(t) {
    await t.send('I want my money back');
    t.soft('polite', await t.judge('Is the reply polite?'), atLeast(0.7));
  },
});

lousho eval [globs...] [--tag t] [--junit path] [--json path] [--strict] [--judge] [--record | --replay | --drift [--drift-usage]] [--url <base> [--token <bearer>]]

# .github/workflows/evals.yml
name: evals
on: [pull_request]
jobs:
  evals:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with: { node-version: 22 }
      - run: npm ci
      - run: npx lousho eval --junit reports/evals.xml --json reports/evals.json
      - uses: actions/upload-artifact@v4
        if: always()
        with:
          name: eval-reports
          path: reports/
      - uses: mikepenz/action-junit-report@v4
        if: always()
        with:
          report_paths: reports/evals.xml

npx lousho eval --record        # real provider: writes the cassettes, commit them
npx lousho eval --replay        # every case from its cassette, no network, no key
npx lousho eval --drift         # re-record and diff each case's trajectory

Drift:
EVAL         CASE    FIELD  COMMITTED                     CURRENT
refund flow  polite  args   lookup_order {"orderId":"42"}  lookup_order {"orderId":"43"}

npx lousho eval --url https://agent.example.com --token "$DEPLOY_TOKEN"   # or LOUSHO_EVAL_TOKEN

import { defineEval, remoteTarget } from '@lousho/build-ai-agent';

defineEval({
  name: 'deployed refund flow',
  target: remoteTarget({ url: 'https://agent.example.com', auth: process.env.LOUSHO_EVAL_TOKEN }),
  async test(t) {
    await t.send('Refund order 42');
    t.completed();
    t.calledTool('lookup_order');
  },
});