emmental/audio/test_bass.py

# Copyright 2021 (c) Anna Schumaker.
import pathlib
import unittest
from gi.repository import GObject
from gi.repository import Gst
from . import bass

test_album = pathlib.Path("./data/Test Album/")
test_track = test_album / "01 - Test Track.ogg"
test_uri = test_track.absolute().as_uri()

class TestBassPlayer(unittest.TestCase):
    def on_playback_start(self, player): self.playing = True
    def on_playback_paused(self, player): self.playing = False

    def test_bass_player_init(self):
        base = bass.BassPlayer()
        self.assertIsInstance(base, GObject.GObject)
        self.assertIsInstance(base.video, Gst.Element)
        self.assertIsInstance(base.playbin, Gst.Element)
        self.assertEqual(base.playbin.get_property("video-sink"), base.video)
        self.assertEqual(base.playbin.get_state(Gst.CLOCK_TIME_NONE)[1],
                         Gst.State.READY)

    def test_bass_player_bus(self):
        base = bass.BassPlayer()
        self.assertIsInstance(base.bus, Gst.Bus)

    def test_bass_player_playing(self):
        base = bass.BassPlayer()
        base.connect("playback-start", self.on_playback_start)
        base.connect("playback-paused", self.on_playback_paused)
        base.set_property("uri", test_uri)
        self.assertFalse(base.get_property("playing"))

        base.set_property("playing", True)
        (ret, state, pending) = base.playbin.get_state(Gst.CLOCK_TIME_NONE)
        self.assertEqual(state, Gst.State.PLAYING)
        self.assertTrue(base.get_property("playing"))

        base.set_property("playing", False)
        (ret, state, pending) = base.playbin.get_state(Gst.CLOCK_TIME_NONE)
        self.assertEqual(state, Gst.State.PAUSED)
        self.assertFalse(base.get_property("playing"))

    def test_bass_player_uri(self):
        base = bass.BassPlayer()

        self.assertIsNone(base.get_property("uri"))
        base.set_property("uri", test_uri)
        self.assertEqual(base.get_property("uri"), test_uri)

        base.playbin.set_state(Gst.State.PAUSED)
        base.set_property("uri", None)
        self.assertEqual(base.playbin.get_state(Gst.CLOCK_TIME_NONE)[1],
                         Gst.State.READY)