def createMovingLightGraph():
fg = filtergraph.FilterGraph(recordTimings=True)
audio_in = audio.AudioInput(num_channels=2)
fg.addEffectNode(audio_in)
led_out = devices.LEDOutput()
fg.addEffectNode(led_out)
color_wheel = colors.ColorWheel()
fg.addEffectNode(color_wheel)
movingLight = audioreactive.MovingLight(fs=audio_in.getSampleRate())
fg.addEffectNode(movingLight)
mirrorLower = effects.Mirror(mirror_lower=True, recursion=0)
fg.addEffectNode(mirrorLower)
afterglow = effects.AfterGlow(glow_time=0.15)
fg.addEffectNode(afterglow)
append = effects.Append(2, flip0=True)
fg.addEffectNode(append)
fg.addConnection(audio_in, 0, movingLight, 0)
fg.addConnection(color_wheel, 0, movingLight, 1)
fg.addConnection(movingLight, 0, afterglow, 0)
fg.addConnection(afterglow, 0, append, 0)
fg.addConnection(afterglow, 0, append, 1)
fg.addConnection(append, 0, led_out, 0)
return fg
def test_effectDoesntProcessNullBuffers(self):
effect = effects.Mirror()
effect.process()
self.assertIsNone(effect._inputBuffer)