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Bisher scheiterte der Import auf Seiten wie rezeptwelt.de mit „Diese Seite enthält kein Rezept", obwohl unser Such-Filter die Treffer durchließ (Microdata wird seit dem vorherigen Commit erkannt). Jetzt kann der Importer die Daten auch tatsächlich extrahieren: - extractRecipeFromMicrodata(html): parst [itemtype=schema.org/Recipe]- Scopes per linkedom, sammelt itemprop-Werte unter Beachtung der verschachtelten itemscope-Grenzen (HowToStep-Texts landen nicht im Haupt-Scope). - Übernimmt Content-Attribute auf <meta>/<time> (z.B. prepTime="PT20M"), src auf <img>, textContent als Fallback — die Standard-Microdata- Value-Regeln. - Behandelt HowToStep-Items UND einfache <li>/<ol>-Listen als recipeInstructions. - extractRecipeFromHtml ruft JSON-LD zuerst, fällt nur bei null auf Microdata zurück — damit bleibt bestehendes Verhalten stabil. Tests: Königsberger-Klopse-Fixture mit HowToSteps, einfache ol/li- Variante und Priorität-JSON-LD-über-Microdata-Check. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
153 lines
5.5 KiB
TypeScript
153 lines
5.5 KiB
TypeScript
import { describe, it, expect } from 'vitest';
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import { readFileSync } from 'node:fs';
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import { dirname, join } from 'node:path';
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import { fileURLToPath } from 'node:url';
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import {
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extractRecipeFromHtml,
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hasRecipeMarkup
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} from '../../src/lib/server/parsers/json-ld-recipe';
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const here = dirname(fileURLToPath(import.meta.url));
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function load(name: string): string {
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return readFileSync(join(here, '../fixtures', name), 'utf8');
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}
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describe('extractRecipeFromHtml', () => {
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it('extracts a recipe from Chefkoch HTML', () => {
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const html = load('chefkoch-schupfnudeln.html');
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const r = extractRecipeFromHtml(html);
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expect(r).not.toBeNull();
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expect(r!.title.toLowerCase()).toContain('schupfnudel');
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expect(r!.ingredients.length).toBeGreaterThan(2);
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expect(r!.steps.length).toBeGreaterThan(0);
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});
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it('extracts a recipe from Emmi kocht einfach HTML', () => {
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const html = load('emmi-bolognese.html');
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const r = extractRecipeFromHtml(html);
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expect(r).not.toBeNull();
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expect(r!.title.toLowerCase()).toContain('bolognese');
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expect(r!.ingredients.length).toBeGreaterThan(0);
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expect(r!.steps.length).toBeGreaterThan(0);
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});
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it('returns null when no Recipe JSON-LD present', () => {
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const html = '<html><body><p>no recipe</p></body></html>';
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expect(extractRecipeFromHtml(html)).toBeNull();
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});
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it('returns null when JSON-LD has only non-Recipe types', () => {
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const html = `
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<html><head>
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<script type="application/ld+json">{"@context":"https://schema.org","@type":"Organization","name":"Foo"}</script>
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</head></html>`;
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expect(extractRecipeFromHtml(html)).toBeNull();
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});
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});
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describe('extractRecipeFromHtml — Microdata fallback', () => {
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it('extracts title, ingredients and HowToStep instructions', () => {
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const html = `<!doctype html><html><body>
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<article itemscope itemtype="https://schema.org/Recipe">
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<h1 itemprop="name">Königsberger Klopse</h1>
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<img itemprop="image" src="/img/klopse.jpg" />
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<p itemprop="description">Klassische Königsberger Klopse.</p>
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<meta itemprop="prepTime" content="PT20M" />
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<meta itemprop="cookTime" content="PT25M" />
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<span itemprop="recipeYield">4</span>
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<span itemprop="recipeCuisine">Ostpreußisch</span>
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<ul>
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<li itemprop="recipeIngredient">500 g Hackfleisch gemischt</li>
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<li itemprop="recipeIngredient">1 Zwiebel, fein gewürfelt</li>
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<li itemprop="recipeIngredient">2 EL Kapern</li>
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</ul>
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<ol>
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<li itemprop="recipeInstructions" itemscope itemtype="https://schema.org/HowToStep">
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<span itemprop="text">Hackfleisch und Zwiebel vermengen.</span>
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</li>
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<li itemprop="recipeInstructions" itemscope itemtype="https://schema.org/HowToStep">
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<span itemprop="text">Klopse formen und in Salzwasser garen.</span>
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</li>
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</ol>
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</article>
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</body></html>`;
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const r = extractRecipeFromHtml(html);
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expect(r).not.toBeNull();
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expect(r!.title).toBe('Königsberger Klopse');
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expect(r!.ingredients.length).toBe(3);
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expect(r!.ingredients[0].raw_text).toContain('Hackfleisch');
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expect(r!.steps.length).toBe(2);
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expect(r!.steps[1].text).toContain('Klopse formen');
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expect(r!.prep_time_min).toBe(20);
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expect(r!.cook_time_min).toBe(25);
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expect(r!.servings_default).toBe(4);
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expect(r!.cuisine).toBe('Ostpreußisch');
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expect(r!.image_path).toBe('/img/klopse.jpg');
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});
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it('handles plain-text recipeInstructions without HowToStep', () => {
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const html = `<html><body>
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<div itemscope itemtype="http://schema.org/Recipe">
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<span itemprop="name">Test</span>
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<span itemprop="recipeIngredient">1 Apfel</span>
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<div itemprop="recipeInstructions">
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<ol>
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<li>Schälen.</li>
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<li>Essen.</li>
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</ol>
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</div>
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</div>
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</body></html>`;
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const r = extractRecipeFromHtml(html);
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expect(r).not.toBeNull();
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expect(r!.steps.length).toBe(2);
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expect(r!.steps[0].text).toBe('Schälen.');
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});
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it('prefers JSON-LD when both are present', () => {
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const html = `<html><head>
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<script type="application/ld+json">${JSON.stringify({
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'@type': 'Recipe',
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name: 'From JSON-LD',
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recipeIngredient: ['x'],
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recipeInstructions: ['y']
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})}</script>
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</head><body>
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<div itemscope itemtype="https://schema.org/Recipe">
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<span itemprop="name">From Microdata</span>
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</div>
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</body></html>`;
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const r = extractRecipeFromHtml(html);
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expect(r?.title).toBe('From JSON-LD');
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});
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});
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describe('hasRecipeMarkup', () => {
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it('detects JSON-LD Recipe', () => {
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const html = `<html><head>
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<script type="application/ld+json">{"@type":"Recipe","name":"x"}</script>
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</head></html>`;
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expect(hasRecipeMarkup(html)).toBe(true);
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});
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it('detects schema.org/Recipe microdata', () => {
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const html = `<html><body>
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<div itemscope itemtype="https://schema.org/Recipe">
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<span itemprop="name">Königsberger Klopse</span>
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</div>
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</body></html>`;
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expect(hasRecipeMarkup(html)).toBe(true);
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});
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it('also detects http:// variant of schema.org/Recipe', () => {
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const html = `<div itemscope itemtype="http://schema.org/Recipe"></div>`;
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expect(hasRecipeMarkup(html)).toBe(true);
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});
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it('returns false for pages without any recipe markup', () => {
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const html = '<html><body><p>nothing here</p></body></html>';
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expect(hasRecipeMarkup(html)).toBe(false);
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});
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});
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