import numpy as np

from validation.compare import compare_stft_to_scipy, make_validation_signals


def test_validation_signals_present():
    signals = make_validation_signals()
    assert {"dual_tone_impulse", "linear_chirp", "click_train"} <= set(signals)


def test_scipy_alignment_validation_small_signal():
    signal = make_validation_signals()["dual_tone_impulse"]
    metrics = compare_stft_to_scipy(signal, window_name="hanning", window_length=33, hop=8, n_fft=128)
    assert metrics["best_offset"] >= 0
    assert metrics["max_abs_diff"] < 1e-10
    assert metrics["mean_abs_diff"] < 1e-12