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import pytest
from fixtures import soloTool as uut, mockPlayer, testSongs
def test_perSongVolumeFlow(uut, mockPlayer, testSongs):
# Before a song is added, the volume starts at 100%
assert uut.song is None
assert mockPlayer.currentSong == None
assert uut.volume == 1.0
assert mockPlayer.volume == 1.0
# When songs are added, their volume starts at 100%
uut.addSong(testSongs[0])
assert uut.song == 0
assert uut.volume == 1.0
assert mockPlayer.volume == 1.0
# It's possible to change the volume
uut.volume = 0.5
assert uut.volume == 0.5
assert mockPlayer.volume == 0.5
# New song song is added, volume stays because the new song is not selected
uut.addSong(testSongs[1])
assert uut.song == 0
assert uut.volume == 0.5
assert mockPlayer.volume == 0.5
# Select new song, volume is 100%
uut.song = 1
assert uut.volume == 1.0
assert mockPlayer.volume == 1.0
uut.volume = 0.75
# Previous song retains its volume
uut.song = 0
assert uut.volume == 0.5
assert mockPlayer.volume == 0.5
# New song also
uut.song = 1
assert uut.volume == 0.75
assert mockPlayer.volume == 0.75
def test_perSongVolumeEdgeCases(uut, mockPlayer, testSongs):
# If the player volume is not 100% when the first song is added, it is set to 100%
uut.volume = 0.5
assert mockPlayer.volume == 0.5
uut.addSong(testSongs[0])
assert uut.volume == 1.0
assert mockPlayer.volume == 1.0
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