| """Shared pytest fixtures.""" | |
| from __future__ import annotations | |
| import wave | |
| from pathlib import Path | |
| import numpy as np | |
| import pytest | |
| def _write_sine_wav(path: Path, duration: float = 3.0, sr: int = 16000) -> Path: | |
| t = np.linspace(0, duration, int(sr * duration), endpoint=False) | |
| tone = 0.3 * np.sin(2 * np.pi * 220 * t) | |
| ints = (tone * 32767).astype(np.int16) | |
| with wave.open(str(path), "wb") as wf: | |
| wf.setnchannels(1) | |
| wf.setsampwidth(2) | |
| wf.setframerate(sr) | |
| wf.writeframes(ints.tobytes()) | |
| return path | |
| def sine_wav(tmp_path: Path) -> Path: | |
| return _write_sine_wav(tmp_path / "tone.wav") | |
| def sample_rate() -> int: | |
| return 16000 | |