🐛 fix adapter option

tests/test_eval.py

@@ -72,7 +72,7 @@ def test_evaluate(backend):
     with TemporaryDirectory() as directory:
         generate_fake_eval_dataset(directory)
         metrics = evaluate(
-            adapter='spleeter.audio.adapter.ffmpeg.FFMPEGProcessAudioAdapter',
+            adapter='spleeter.audio.ffmpeg.FFMPEGProcessAudioAdapter',
             output_path='eval',
             stft_backend=backend,
             params_filename='spleeter:4stems',

tests/test_train.py

@@ -101,9 +101,8 @@ def test_train():
             '-p', 'useless_config.json',
             '-d', path
         ])
-        raise IOError(f'STDOUT: {result.stdout}')
-        assert result.exit_code == 0
         # assert that model checkpoint was created.
         assert os.path.exists(join(path, 'model', 'model.ckpt-10.index'))
         assert os.path.exists(join(path, 'model', 'checkpoint'))
         assert os.path.exists(join(path, 'model', 'model.ckpt-0.meta'))
+        assert result.exit_code == 0