feat(music-lab): metadata tracks 옵션 + YouTube 챕터 자동 형식

music-lab/tests/test_metadata_generation.py

@@ -80,3 +80,75 @@ async def test_metadata_falls_back_on_api_error(monkeypatch):
     )
     assert result["used_fallback"] is True
     assert "Drive" in result["title"]
+
+
+@pytest.mark.asyncio
+@respx.mock
+async def test_metadata_with_tracks_includes_chapter_format(monkeypatch):
+    monkeypatch.setenv("ANTHROPIC_API_KEY", "k")
+    captured = {}
+
+    def hook(req):
+        import json as _json
+        captured["body"] = _json.loads(req.content)
+        return Response(200, json={"content": [{"type": "text", "text":
+            '{"title":"Lo-Fi Mix 3 Tracks","description":"Track 1: [00:00] T1\\nTrack 2: [03:00] T2",'
+            '"tags":["lofi","mix"],"category_id":10}'}]})
+
+    respx.post("https://api.anthropic.com/v1/messages").mock(side_effect=hook)
+    result = await metadata.generate(
+        track={"title": "Mix", "genre": "mix", "duration_sec": 600,
+               "moods": []},
+        template={"title": "{title}", "description": "{title}",
+                  "tags": [], "category_id": 10},
+        trend_keywords=[],
+        tracks=[
+            {"id": 1, "title": "T1", "start_offset_sec": 0, "duration_sec": 180},
+            {"id": 2, "title": "T2", "start_offset_sec": 180, "duration_sec": 200},
+            {"id": 3, "title": "T3", "start_offset_sec": 380, "duration_sec": 220},
+        ],
+    )
+    body_str = str(captured["body"])
+    assert "T1" in body_str and "T2" in body_str and "T3" in body_str
+    assert "00:00" in body_str
+    assert result["used_fallback"] is False
+
+
+@pytest.mark.asyncio
+async def test_metadata_fallback_with_tracks(monkeypatch):
+    """API 키 없을 때 폴백에서도 트랙 챕터 포함."""
+    monkeypatch.delenv("ANTHROPIC_API_KEY", raising=False)
+    result = await metadata.generate(
+        track={"title": "Mix", "genre": "mix", "duration_sec": 600, "moods": []},
+        template={"title": "{title}", "description": "{title}",
+                  "tags": [], "category_id": 10},
+        trend_keywords=[],
+        tracks=[
+            {"id": 1, "title": "T1", "start_offset_sec": 0, "duration_sec": 180},
+            {"id": 2, "title": "T2", "start_offset_sec": 180, "duration_sec": 200},
+        ],
+    )
+    assert result["used_fallback"] is True
+    assert "00:00" in result["description"]
+    assert "T1" in result["description"]
+    assert "T2" in result["description"]
+
+
+def test_format_chapters_under_hour():
+    from app.pipeline.metadata import _format_chapters
+    out = _format_chapters([
+        {"start_offset_sec": 0, "title": "T1"},
+        {"start_offset_sec": 180, "title": "T2"},
+    ])
+    assert "00:00 T1" in out
+    assert "03:00 T2" in out
+
+
+def test_format_chapters_over_hour():
+    from app.pipeline.metadata import _format_chapters
+    out = _format_chapters([
+        {"start_offset_sec": 0, "title": "T1"},
+        {"start_offset_sec": 3700, "title": "T2"},
+    ])
+    assert "00:00 T1" in out
+    assert "01:01:40 T2" in out