import os

from blc2.functions.audio import Audio

def test_audio(aws):
    a = Audio(aws)
    
    a.fade_out = 1000
    a.fade_in = 1000
    a.filename = "nonexistant"
    
    assert a.audio_scope == {"nonexistant"}
    assert not a.scope
    assert a.duration == 0
    assert a.actual_duration == 0

    a.filename = "tests/silence.m4a"
    assert a.audio_scope == {"tests/silence.m4a"}
    assert a.duration == 2024
    assert a.actual_duration == 3024

    a.fade_out = 500
    assert a.fade_out == 500
    assert a.duration == 2524
    assert a.actual_duration == 3024

    lc, ac, _ = a.render(0)
    assert not lc
    assert len(ac) == 1
    assert ac[0][1:] == ("tests/silence.m4a", 0, 1000, 2524, 500)

    _, ac2, _ = a.render(3000)
    assert ac2 == ac

    _, ac, _ = a.render(5000)
    assert not ac