feat(blog-lab): brand_links 테이블 및 CRUD 추가

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

blog-lab/tests/test_db_brand_links.py

@@ -0,0 +1,67 @@
+"""brand_links DB CRUD 테스트."""
+import os
+import pytest
+from app import db
+from app.config import DB_PATH
+
+
+@pytest.fixture(autouse=True)
+def setup_db(tmp_path):
+    """테스트용 임시 DB 사용."""
+    test_db = str(tmp_path / "test.db")
+    import app.config as config
+    config.DB_PATH = test_db
+    db.DB_PATH = test_db
+    db.init_db()
+    yield
+
+
+def test_add_brand_link():
+    link = db.add_brand_link({
+        "keyword_id": 1,
+        "url": "https://link.coupang.com/abc",
+        "product_name": "테스트 상품",
+        "description": "상품 설명",
+        "placement_hint": "본문 중간",
+    })
+    assert link["id"] is not None
+    assert link["url"] == "https://link.coupang.com/abc"
+    assert link["product_name"] == "테스트 상품"
+    assert link["keyword_id"] == 1
+    assert link["post_id"] is None
+
+
+def test_get_brand_links_by_keyword_id():
+    db.add_brand_link({"keyword_id": 1, "url": "https://a.com", "product_name": "A"})
+    db.add_brand_link({"keyword_id": 1, "url": "https://b.com", "product_name": "B"})
+    db.add_brand_link({"keyword_id": 2, "url": "https://c.com", "product_name": "C"})
+    links = db.get_brand_links(keyword_id=1)
+    assert len(links) == 2
+
+
+def test_get_brand_links_by_post_id():
+    db.add_brand_link({"post_id": 10, "url": "https://a.com", "product_name": "A"})
+    links = db.get_brand_links(post_id=10)
+    assert len(links) == 1
+    assert links[0]["post_id"] == 10
+
+
+def test_update_brand_link():
+    link = db.add_brand_link({"url": "https://a.com", "product_name": "원래 이름"})
+    updated = db.update_brand_link(link["id"], {"product_name": "새 이름", "post_id": 5})
+    assert updated["product_name"] == "새 이름"
+    assert updated["post_id"] == 5
+
+
+def test_delete_brand_link():
+    link = db.add_brand_link({"url": "https://a.com", "product_name": "삭제할 링크"})
+    assert db.delete_brand_link(link["id"]) is True
+    assert db.delete_brand_link(link["id"]) is False
+
+
+def test_link_keyword_to_post():
+    db.add_brand_link({"keyword_id": 1, "url": "https://a.com", "product_name": "A"})
+    db.add_brand_link({"keyword_id": 1, "url": "https://b.com", "product_name": "B"})
+    db.link_brand_links_to_post(keyword_id=1, post_id=10)
+    links = db.get_brand_links(post_id=10)
+    assert len(links) == 2