code: def test_gain_transition_fraction(self, samples):
      np.random.seed(42)
      random.seed(42)
      sample_rate = 8000
  
      augment = GainTransition(p=1.0)
      processed_samples = augment(
          samples=samples, sample_rate=sample_rate
      )
      assert not np.allclose(samples, processed_samples)
      assert processed_samples.shape == samples.shape
      assert processed_samples.dtype == np.float32
  
file_path: audiomentations/tests/test_gain_transition.py
imports: import random
  import numpy
  import pytest
  from audiomentations import GainTransition
label_desc: Use image node_id 1 for calling the TestGainTransition obj's underlying member method code with example usage: obj.test_gain_transition_fraction(samples) without return types