ytptube/app/tests/test_segments.py
2025-09-13 18:35:41 +03:00

200 lines
6.1 KiB
Python

import asyncio
import hashlib
import tempfile
from pathlib import Path
from typing import Any
import pytest
from app.library.Segments import Segments
class DummyFF:
def __init__(self, v: bool, a: bool) -> None:
self._v = v
self._a = a
def has_video(self) -> bool:
return self._v
def has_audio(self) -> bool:
return self._a
@pytest.mark.asyncio
async def test_build_ffmpeg_args_video_and_audio(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
# Create a dummy media file
media = tmp_path / "file.mp4"
media.write_bytes(b"data")
# Patch ffprobe to report both video and audio
async def fake_ffprobe(_file: Path):
return DummyFF(v=True, a=True)
monkeypatch.setattr("app.library.Segments.ffprobe", fake_ffprobe)
seg = Segments(download_path=str(tmp_path), index=2, duration=5.5, vconvert=False, aconvert=False)
args = await seg.build_ffmpeg_args(media)
# Compute expected symlink path used by Segments
tmpFile = Path(tempfile.gettempdir()).joinpath(
f"ytptube_stream.{hashlib.sha256(str(media).encode()).hexdigest()}"
)
# Start time is duration * index with 6 decimals for non-zero index
assert "-ss" in args
assert args[args.index("-ss") + 1] == f"{5.5 * 2:.6f}"
# Duration formatting
assert "-t" in args
assert args[args.index("-t") + 1] == f"{5.5:.6f}"
# Input uses file:<symlink>
assert "-i" in args
assert args[args.index("-i") + 1] == f"file:{tmpFile}"
# Includes video and audio mapping and codecs, forced convert True in __init__
assert "-map" in args
assert "0:v:0" in args
assert "-codec:v" in args
assert seg.vcodec in args
assert "-codec:a" in args
assert seg.acodec in args
# Output format: ensure -f mpegts and pipe:1 present
assert args[-1] == "pipe:1"
assert "-f" in args
assert args[args.index("-f") + 1] == "mpegts"
@pytest.mark.asyncio
async def test_build_ffmpeg_args_audio_only(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
media = tmp_path / "file.mp3"
media.write_bytes(b"data")
async def fake_ffprobe(_file: Path):
return DummyFF(v=False, a=True)
monkeypatch.setattr("app.library.Segments.ffprobe", fake_ffprobe)
seg = Segments(download_path=str(tmp_path), index=0, duration=9.0, vconvert=False, aconvert=False)
args = await seg.build_ffmpeg_args(media)
# Start at 0 for index 0
assert "-ss" in args
assert args[args.index("-ss") + 1] == f"{0:.6f}"
# Should not include video mapping
assert "0:v:0" not in args
# Should include audio mapping and codec
assert "-map" in args
assert "0:a:0" in args
assert "-codec:a" in args
assert seg.acodec in args
class _FakeStdout:
def __init__(self, chunks: list[bytes]) -> None:
self._chunks = chunks
async def read(self, _size: int) -> bytes:
if not self._chunks:
return b""
return self._chunks.pop(0)
class _FakeProc:
def __init__(self, chunks: list[bytes]) -> None:
self.stdout = _FakeStdout(chunks)
self.stderr = _FakeStdout([])
self.terminated = False
self.killed = False
async def wait(self) -> int:
return 0
def terminate(self) -> None:
self.terminated = True
def kill(self) -> None:
self.killed = True
class _FakeResp:
def __init__(self, fail_with: Exception | None = None) -> None:
self.data: bytearray = bytearray()
self.eof = False
self._exc = fail_with
async def write(self, data: bytes) -> None:
if self._exc:
raise self._exc
self.data.extend(data)
async def write_eof(self) -> None:
self.eof = True
@pytest.mark.asyncio
async def test_stream_normal_flow(monkeypatch: pytest.MonkeyPatch, tmp_path: Path) -> None:
async def fake_ffprobe(_file: Path):
return DummyFF(v=True, a=True)
monkeypatch.setattr("app.library.Segments.ffprobe", fake_ffprobe)
# Process that yields two chunks and then EOF
proc = _FakeProc([b"abc", b"def", b""])
async def fake_create_subprocess_exec(*_args: Any, **_kwargs: Any):
return proc
monkeypatch.setattr("asyncio.create_subprocess_exec", fake_create_subprocess_exec)
seg = Segments(download_path=str(tmp_path), index=0, duration=1.0, vconvert=True, aconvert=True)
resp = _FakeResp()
await seg.stream(tmp_path / "file.mp4", resp)
assert bytes(resp.data) == b"abcdef"
assert resp.eof is True
@pytest.mark.asyncio
async def test_stream_client_reset(monkeypatch: pytest.MonkeyPatch, tmp_path: Path) -> None:
async def fake_ffprobe(_file: Path):
return DummyFF(v=True, a=True)
monkeypatch.setattr("app.library.Segments.ffprobe", fake_ffprobe)
proc = _FakeProc([b"abc", b"def"]) # will attempt to write and fail
async def fake_create_subprocess_exec(*_args: Any, **_kwargs: Any):
return proc
monkeypatch.setattr("asyncio.create_subprocess_exec", fake_create_subprocess_exec)
seg = Segments(download_path=str(tmp_path), index=0, duration=1.0, vconvert=True, aconvert=True)
resp = _FakeResp(fail_with=ConnectionResetError())
await seg.stream(tmp_path / "file.mp4", resp)
# Should not write EOF due to client disconnect
assert resp.eof is False
@pytest.mark.asyncio
async def test_stream_cancelled(monkeypatch: pytest.MonkeyPatch, tmp_path: Path) -> None:
async def fake_ffprobe(_file: Path):
return DummyFF(v=True, a=True)
monkeypatch.setattr("app.library.Segments.ffprobe", fake_ffprobe)
proc = _FakeProc([b"abc"]) # only one chunk
async def fake_create_subprocess_exec(*_args: Any, **_kwargs: Any):
return proc
monkeypatch.setattr("asyncio.create_subprocess_exec", fake_create_subprocess_exec)
seg = Segments(download_path=str(tmp_path), index=0, duration=1.0, vconvert=True, aconvert=True)
# Fail with CancelledError on write to hit inner disconnection branch
resp = _FakeResp(fail_with=asyncio.CancelledError())
await seg.stream(tmp_path / "file.mp4", resp)
# Inner branch treats it as client disconnected; no EOF and no termination
assert resp.eof is False
assert proc.terminated is False