// @vitest-environment node /** * Exercises the real reranker model end to end, including the multilingual * behaviour that motivated picking mmarco-mMiniLMv2-L12-H384-v1. Downloads * ~136MB on first run, so it is excluded from the default suite: * * npx vitest run --config vitest.integration.config.ts */ import { afterAll, beforeAll, describe, expect, it } from "vitest"; import { getRerankerStatus, rerank, startRerankerService, stopRerankerService, } from "./rerankerService"; type SearchResult = [title: string, content: string, url: string]; type Fixture = { name: string; query: string; results: SearchResult[]; /** Indices of `results` a human would consider relevant to `query`. */ relevant: number[]; }; const fixtures: Fixture[] = [ { name: "english / factual", query: "how to reverse a string in javascript", results: [ [ "Reverse a String in JavaScript", "Use split(''), reverse() and join('') to reverse a string in JavaScript.", "https://a.dev/reverse", ], [ "Best Hotels in Reverse, Texas", "Compare 240 hotels in Reverse with free cancellation and instant booking.", "https://hotels.com/reverse-tx", ], [ "How do I reverse a string in JS? - Stack Overflow", "I want to take a string and reverse its characters. What is the idiomatic way?", "https://so.com/q/958908", ], [ "String Manipulation in Python", "Learn slicing, concatenation and formatting of Python strings from scratch.", "https://py.io/strings", ], [ "Reverse Mortgage Calculator 2026", "Estimate how much equity you can access with a reverse mortgage this year.", "https://finance.com/reverse-mortgage", ], [ "Reversing Unicode strings correctly", "Naive reversal breaks emoji and combining characters. Use Intl.Segmenter instead.", "https://a.dev/unicode-reverse", ], ], relevant: [0, 2, 5], }, { name: "portuguese / recipe", query: "como fazer pão de queijo caseiro", results: [ [ "Receita de Pão de Queijo Caseiro Fácil", "Aprenda a fazer pão de queijo mineiro com polvilho doce, queijo meia cura e leite.", "https://receitas.com/pao-de-queijo", ], [ "Onde comprar polvilho azedo online", "Compare preços de polvilho azedo e doce em 12 lojas com entrega para todo o Brasil.", "https://mercado.br/polvilho", ], [ "Pão de Queijo: a receita original de Minas Gerais", "O segredo do pão de queijo caseiro está no polvilho azedo e no ponto da massa escaldada.", "https://cozinha.br/pao-queijo-mg", ], [ "Bolo de cenoura com cobertura de chocolate", "Receita de bolo de cenoura fofinho com cobertura cremosa de chocolate meio amargo.", "https://receitas.com/bolo-cenoura", ], [ "Queijo Minas Artesanal: história e produção", "Conheça o processo de maturação do queijo minas e as regiões produtoras do estado.", "https://queijos.br/minas-artesanal", ], ], relevant: [0, 2], }, { name: "portuguese / technical", query: "configurar nginx como proxy reverso", results: [ [ "Como configurar o Nginx como proxy reverso", "Tutorial passo a passo para configurar proxy_pass, headers e upstream no Nginx.", "https://tutoriais.br/nginx-proxy-reverso", ], [ "Certificados SSL grátis com Let's Encrypt", "Emita e renove certificados SSL automaticamente usando o Certbot.", "https://tutoriais.br/lets-encrypt", ], [ "Nginx Reverse Proxy Guide", "Configure Nginx as a reverse proxy with proxy_pass, load balancing and SSL termination.", "https://docs.nginx.com/reverse-proxy", ], [ "Instalando o Nginx no Ubuntu 24.04", "Guia de instalação do Nginx via apt e configuração inicial do firewall.", "https://tutoriais.br/instalar-nginx", ], [ "Nginx: erro 502 Bad Gateway ao usar proxy_pass", "Como diagnosticar e resolver o erro 502 na configuração de proxy reverso do Nginx.", "https://forum.br/nginx-502", ], ], relevant: [0, 2, 4], }, { name: "english / ambiguous term", query: "jaguar animal habitat and diet", results: [ [ "Jaguar F-PACE 2026 Review", "The F-PACE gets a refreshed interior and a new mild-hybrid powertrain for 2026.", "https://cars.com/jaguar-f-pace", ], [ "Jaguar | Species Profile - WWF", "The jaguar is the largest cat in the Americas, living in rainforest and wetland habitats.", "https://wwf.org/jaguar", ], [ "Jacksonville Jaguars 2026 Schedule", "Full regular season schedule, opponents and kickoff times for the Jaguars.", "https://nfl.com/jaguars-schedule", ], [ "What do jaguars eat?", "Jaguars are apex predators feeding on capybara, caiman, peccary, deer and fish.", "https://animals.net/jaguar-diet", ], [ "Jaguar XJ220: the 1990s supercar", "How Jaguar built a 217mph V6 supercar and then struggled to sell it.", "https://classics.com/xj220", ], ], relevant: [1, 3], }, ]; /** Mirrors the document formatting in rankSearchResults.ts. */ function buildDocuments(results: SearchResult[]) { return results.map(([title, snippet]) => `${title}\n${snippet}`); } describe("reranker service", () => { beforeAll(async () => { await startRerankerService(); }, 600_000); afterAll(async () => { await stopRerankerService(); }); it("reports ready after startup", async () => { expect(await getRerankerStatus()).toBe(true); }); it("returns an empty array without calling the model", async () => { expect(await rerank("anything", [])).toEqual([]); }); for (const fixture of fixtures) { it(`ranks relevant results first: ${fixture.name}`, async () => { const documents = buildDocuments(fixture.results); const scored = await rerank(fixture.query, documents); expect(scored).toHaveLength(fixture.results.length); expect( scored.every(({ relevance_score }) => Number.isFinite(relevance_score)), ).toBe(true); const ordered = scored .slice() .sort((a, b) => b.relevance_score - a.relevance_score) .map(({ index }) => index); // Every relevant result must outrank every irrelevant one. The model // clears this with a score gap of at least 5.7 between the two groups, so // the assertion is about ranking behaviour and not about a threshold the // model happens to sit on. const topIndices = ordered .slice(0, fixture.relevant.length) .sort((a, b) => a - b); expect(topIndices).toEqual([...fixture.relevant].sort((a, b) => a - b)); }, 120_000); } });