Remove global audio backend from test (#3691)

global audio backend is removed thus this is no-op.

test/torchaudio_unittest/datasets/voxceleb1_test.py

@@ -128,7 +128,6 @@ def get_mock_veri_dataset(root_dir: str, meta_file: str):
 
 class TestVoxCeleb1Identification(TempDirMixin, TorchaudioTestCase):
     root_dir = None
-    backend = "default"
 
     meta_file = "iden_list.txt"
     train_samples = {}
@@ -166,7 +165,6 @@ class TestVoxCeleb1Identification(TempDirMixin, TorchaudioTestCase):
 
 class TestVoxCeleb1Verification(TempDirMixin, TorchaudioTestCase):
     root_dir = None
-    backend = "default"
 
     meta_file = "veri_test.txt"
     train_samples = {}

test/torchaudio_unittest/datasets/yesno_test.py

@@ -23,7 +23,6 @@ def get_mock_data(root_dir, labels):
 
 
 class TestYesNo(TempDirMixin, TorchaudioTestCase):
-    backend = "default"
 
     root_dir = None
     data = []

test/torchaudio_unittest/example/souce_sepration/wsj0mix_test.py

@@ -54,7 +54,6 @@ def _mock_dataset(root_dir, num_speaker):
 
 
 class TestWSJ0Mix2(TempDirMixin, TorchaudioTestCase):
-    backend = "default"
     root_dir = None
     expected = None
 
@@ -78,7 +77,6 @@ class TestWSJ0Mix2(TempDirMixin, TorchaudioTestCase):
 
 
 class TestWSJ0Mix3(TempDirMixin, TorchaudioTestCase):
-    backend = "default"
     root_dir = None
     expected = None
 

test/torchaudio_unittest/functional/batch_consistency_test.py

@@ -25,8 +25,6 @@ def _name_from_args(func, _, params):
 class TestFunctional(common_utils.TorchaudioTestCase):
     """Test functions defined in `functional` module"""
 
-    backend = "default"
-
     def assert_batch_consistency(self, functional, inputs, atol=1e-6, rtol=1e-5, seed=42):
         n = inputs[0].size(0)
         for i in range(1, len(inputs)):

test/torchaudio_unittest/functional/functional_cpu_test.py

@@ -24,8 +24,6 @@ class TestFunctionalFloat64(Functional, PytorchTestCase):
 
 @skipIfNoSox
 class TestApplyCodec(TorchaudioTestCase):
-    backend = "sox_io"
-
     def _smoke_test(self, format, compression, check_num_frames):
         """
         The purpose of this test suite is to verify that apply_codec functionalities do not exhibit

test/torchaudio_unittest/sox_effect/dataset_test.py

@@ -135,8 +135,6 @@ def speed(path):
 
 @skipIfNoSox
 class TestProcessPoolExecutor(TempDirMixin, PytorchTestCase):
-    backend = "sox_io"
-
     def setUp(self):
         sample_rate = 16000
         self.flist = []

test/torchaudio_unittest/transforms/batch_consistency_test.py

@@ -10,8 +10,6 @@ from torchaudio_unittest import common_utils
 class TestTransforms(common_utils.TorchaudioTestCase):
     """Test suite for classes defined in `transforms` module"""
 
-    backend = "default"
-
     def assert_batch_consistency(self, transform, batch, *args, atol=1e-8, rtol=1e-5, seed=42, **kwargs):
         n = batch.size(0)
 

test/torchaudio_unittest/transforms/transforms_test.py

@@ -8,7 +8,6 @@ from torchaudio_unittest import common_utils
 
 
 class Tester(common_utils.TorchaudioTestCase):
-    backend = "default"
 
     # create a sinewave signal for testing
     sample_rate = 16000