feat(insta-lab): card_writer with Claude 10-page JSON generator

insta-lab/tests/test_card_writer.py

@@ -0,0 +1,75 @@
+import json
+import os
+import tempfile
+from unittest.mock import patch, MagicMock
+
+import pytest
+
+from app import db as db_module
+from app import card_writer
+
+
+@pytest.fixture
+def tmp_db(monkeypatch):
+    fd, path = tempfile.mkstemp(suffix=".db")
+    os.close(fd)
+    monkeypatch.setattr(db_module, "DB_PATH", path)
+    db_module.init_db()
+    yield path
+    import gc
+    gc.collect()
+    for ext in ("", "-wal", "-shm"):
+        try:
+            os.remove(path + ext)
+        except OSError:
+            pass
+
+
+SAMPLE_LLM_JSON = {
+    "cover_copy": {"headline": "금리 인상 단행", "body": "왜 지금?", "accent_color": "#0F62FE"},
+    "body_copies": [
+        {"headline": f"포인트 {i+1}", "body": f"본문 {i+1}"} for i in range(8)
+    ],
+    "cta_copy": {"headline": "정리", "body": "바로 확인", "cta": "팔로우"},
+    "suggested_caption": "금리에 대해 알아보자",
+    "hashtags": ["#금리", "#경제"],
+}
+
+
+def _fake_messages_create(*_args, **_kwargs):
+    msg = MagicMock()
+    block = MagicMock()
+    block.text = json.dumps(SAMPLE_LLM_JSON, ensure_ascii=False)
+    msg.content = [block]
+    return msg
+
+
+def test_write_slate_persists_full_payload(tmp_db, monkeypatch):
+    db_module.add_news_article({
+        "category": "economy", "title": "기준금리 인상 단행",
+        "link": "https://example.com/1", "summary": "한국은행 발표",
+    })
+    fake_client = MagicMock()
+    fake_client.messages.create = _fake_messages_create
+    monkeypatch.setattr(card_writer, "_client", lambda: fake_client)
+
+    sid = card_writer.write_slate(keyword="기준금리", category="economy")
+    slate = db_module.get_card_slate(sid)
+    assert slate["status"] == "draft"
+    body_copies = json.loads(slate["body_copies"])
+    assert len(body_copies) == 8
+    assert body_copies[0]["headline"] == "포인트 1"
+    assert json.loads(slate["cover_copy"])["accent_color"] == "#0F62FE"
+
+
+def test_write_slate_raises_on_invalid_json(tmp_db, monkeypatch):
+    fake_client = MagicMock()
+    bad_msg = MagicMock()
+    bad_block = MagicMock()
+    bad_block.text = "not json"
+    bad_msg.content = [bad_block]
+    fake_client.messages.create.return_value = bad_msg
+    monkeypatch.setattr(card_writer, "_client", lambda: fake_client)
+
+    with pytest.raises(ValueError):
+        card_writer.write_slate(keyword="x", category="economy")