Input signal creation for non-existing input signal files

webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/test_data_generation_unittest.py

Index: webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/test_data_generation_unittest.py
diff --git a/webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/test_data_generation_unittest.py b/webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/test_data_generation_unittest.py
index 0bf7e1ab98595405d6bc7349b25939dfa7856a63..6239d516b0fbc67ca62f6228292ea1c0a6efa7be 100644
--- a/webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/test_data_generation_unittest.py
+++ b/webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/test_data_generation_unittest.py
@@ -52,6 +52,25 @@ class TestTestDataGenerators(unittest.TestCase):
     shutil.rmtree(self._test_data_cache_path)
     shutil.rmtree(self._fake_air_db_path)
 
+  def testInputSignalCreation(self):
+    # Init.
+    generator = test_data_generation.IdentityTestDataGenerator('tmp')
+    input_signal_filepath = os.path.join(
+        self._test_data_cache_path, 'pure_tone-440_1000.wav')
+
+    # Check that the input signal is generated.
+    self.assertFalse(os.path.exists(input_signal_filepath))
+    generator.Generate(
+        input_signal_filepath=input_signal_filepath,
+        test_data_cache_path=self._test_data_cache_path,
+        base_output_path=self._base_output_path)
+    self.assertTrue(os.path.exists(input_signal_filepath))
+
+    # Check input signal properties.
+    input_signal = signal_processing.SignalProcessingUtils.LoadWav(
+        input_signal_filepath)
+    self.assertEqual(1000, len(input_signal))
+
   def testTestDataGenerators(self):
     # Preliminary check.
     self.assertTrue(os.path.exists(self._base_output_path))