# -*- coding: utf-8 -*-

# Optional package import
try:
    import pytest
except ImportError:
    raise RuntimeError("In order to perform the tests you need the 'pytest' package.")

import numpy as np

# Local application imports
from mosqito.utils import load
from mosqito.sq_metrics import pr_ecma_st


@pytest.mark.pr_st  # to skip or run PR test
def test_pr_ecma_st():
    """Test function for the prominence ratio calculation of an audio signal

    Validation function for the function pr_ecma_st. The input signals were generated using audacity.

    Parameters
    ----------
    None

    Outputs
    -------
    None
    """
    # Test signal as input for prominence ratio calculation
    # signals generated using audacity : white noise + tones at 442 and 1768 Hz

    signal = {"data_file": "tests/input/white_noise_442_1768_Hz_stationary.wav"}

    # Load signal
    audio, fs = load(signal["data_file"], wav_calib=0.01)

    # Compute tone-to-noise ratio
    t_pr, pr, prom, freq = pr_ecma_st(audio, fs, prominence=True)
    np.testing.assert_almost_equal(t_pr, 32.20980078537321)
    np.testing.assert_almost_equal(freq.astype(np.int32), [442, 1768])
    assert np.count_nonzero(prom == True) == 2


if __name__ == "__main__":
    test_pr_ecma_st()
