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tests/recipe-search.test.js

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+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { searchRecipes } from '../public/js/recipe-search.js';
+
+function recipe(id, overrides = {}) {
+  return {
+    _id: id,
+    title: '기본 레시피',
+    summary: null,
+    tags: [],
+    ingredientGroups: [{ name: '재료', items: [] }],
+    ...overrides,
+  };
+}
+
+test('재료 정확 일치부터 부분 일치, 제목, 태그, 요약 순으로 검색한다', () => {
+  const recipes = [
+    recipe('summary', { summary: '감자를 맛있게 먹는 방법' }),
+    recipe('tag', { tags: ['감자'] }),
+    recipe('title', { title: '감자 수프' }),
+    recipe('partial', {
+      ingredientGroups: [{ name: '재료', items: [{ name: '알감자' }] }],
+    }),
+    recipe('exact', {
+      ingredientGroups: [{ name: '재료', items: [{ name: '감자' }, { name: '감자전분' }] }],
+    }),
+  ];
+
+  const matches = searchRecipes(recipes, ' 감자 ');
+
+  assert.deepEqual(matches.map(({ recipe: item }) => item._id), [
+    'exact',
+    'partial',
+    'title',
+    'tag',
+    'summary',
+  ]);
+  assert.deepEqual(matches[0].matchedIngredients, ['감자', '감자전분']);
+});
+
+test('검색어가 없으면 기존 레시피 순서를 유지한다', () => {
+  const recipes = [recipe('new'), recipe('old')];
+  assert.deepEqual(
+    searchRecipes(recipes, '').map(({ recipe: item }) => item._id),
+    ['new', 'old'],
+  );
+});