Files
web-page-backend/music-lab/tests/test_video_producer.py
gahusb abf475433b fix(music-lab): xfade offset 누적 오차 수정 + 테스트 보강
- _build_slideshow_cmd: offset 공식을 `duration_per_image * i - xd * i`로 수정 (누적 전환 오차 제거)
- _generate_metadata: genre 빈 문자열일 때 yt_tags에 빈 문자열 삽입 방지
- test: VIDEO_DATA_DIR 패치를 monkeypatch로 교체 (자동 복원 보장)
- test: xfade offset 값 검증 테스트 추가 (29.00, 58.00)
- test: 미사용 import 제거 (pytest, sqlite3)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-01 11:56:41 +09:00

112 lines
3.9 KiB
Python

# music-lab/tests/test_video_producer.py
import os
from unittest.mock import patch, MagicMock
def test_build_visualizer_cmd():
from app.video_producer import _build_visualizer_cmd
cmd = _build_visualizer_cmd(
audio_path="/data/music/test.mp3",
bg_path="/tmp/bg.jpg",
output_path="/data/videos/1/output.mp4",
)
assert cmd[0] == "ffmpeg"
assert "/data/music/test.mp3" in cmd
assert "/data/videos/1/output.mp4" in cmd
assert any("showwaves" in str(c) for c in cmd)
def test_make_gradient_bg_uses_pillow(tmp_path):
from app.video_producer import _make_gradient_bg
out = str(tmp_path / "bg.jpg")
_make_gradient_bg(1920, 1080, "lo-fi", out)
assert os.path.exists(out)
assert os.path.getsize(out) > 0
def test_extract_thumbnail_cmd():
from app.video_producer import _build_thumbnail_cmd
cmd = _build_thumbnail_cmd("/data/videos/1/output.mp4", "/data/videos/1/thumbnail.jpg")
assert cmd[0] == "ffmpeg"
assert "00:00:05" in cmd
assert "/data/videos/1/thumbnail.jpg" in cmd
def test_build_slideshow_cmd_single_image():
from app.video_producer import _build_slideshow_cmd
cmd = _build_slideshow_cmd(
image_paths=["/tmp/img0.jpg"],
audio_path="/tmp/audio.mp3",
output_path="/tmp/out.mp4",
duration_per_image=30.0,
)
assert "ffmpeg" in cmd[0]
assert "/tmp/out.mp4" in cmd
assert any("copy" in str(c) for c in cmd)
def test_build_slideshow_cmd_multiple_images():
from app.video_producer import _build_slideshow_cmd
cmd = _build_slideshow_cmd(
image_paths=["/tmp/img0.jpg", "/tmp/img1.jpg", "/tmp/img2.jpg"],
audio_path="/tmp/audio.mp3",
output_path="/tmp/out.mp4",
duration_per_image=60.0,
)
assert "ffmpeg" in cmd[0]
assert any("xfade" in str(c) for c in cmd)
assert "/tmp/out.mp4" in cmd
def test_produce_video_visualizer_calls_ffmpeg(tmp_db, tmp_path, monkeypatch):
"""produce_video가 visualizer 포맷으로 FFmpeg를 호출하는지 확인."""
from app.db import init_db, create_video_project
init_db()
# music_library에 직접 트랙 삽입
import app.db as db_mod
with db_mod._conn() as conn:
conn.execute(
"""INSERT INTO music_library (title, genre, audio_url, file_path, provider)
VALUES (?, ?, ?, ?, ?)""",
("Test Track", "lo-fi", "/media/music/test.mp3",
str(tmp_path / "test.mp3"), "suno"),
)
# 빈 mp3 파일 생성
(tmp_path / "test.mp3").write_bytes(b"\x00" * 100)
create_video_project({"track_id": 1, "format": "visualizer", "target_countries": ["BR"]})
import app.video_producer as vp
monkeypatch.setattr("app.video_producer.VIDEO_DATA_DIR", str(tmp_path / "videos"))
with patch("app.video_producer.subprocess.run") as mock_run, \
patch("app.video_producer._generate_metadata", return_value={
"yt_title": "Chill Beats", "yt_description": "desc", "yt_tags": ["lofi"]
}), \
patch("app.video_producer._download_url", return_value=False):
mock_run.return_value = MagicMock(returncode=0)
vp.produce_video(1)
from app.db import get_video_project
proj = get_video_project(1)
assert proj["status"] == "done"
assert mock_run.called
def test_build_slideshow_cmd_offset_calculation():
from app.video_producer import _build_slideshow_cmd
imgs = ["/tmp/img0.jpg", "/tmp/img1.jpg", "/tmp/img2.jpg"]
cmd = _build_slideshow_cmd(imgs, "/tmp/audio.mp3", "/tmp/out.mp4", duration_per_image=30.0)
# filter_complex 문자열 추출
fc_idx = cmd.index("-filter_complex")
fc = cmd[fc_idx + 1]
# xfade이 2번 등장해야 함 (이미지 3개 → 전환 2번)
assert fc.count("xfade") == 2
# 첫 번째 xfade offset: 30*1 - 1*1 = 29.0
assert "offset=29.00" in fc
# 두 번째 xfade offset: 30*2 - 1*2 = 58.0
assert "offset=58.00" in fc