test: add LAFE - no input files & test_extract()

test/test_feature_extractors.py

@@ -67,3 +67,17 @@ class TestLoudAudioFeatureExtractor(unittest.TestCase):
         test_extractor = extractors.LoudAudioFeatureExtractor(input_files=video_source)
         self.assertTrue(test_extractor)
 
+    def test_init_noinput(self):
+        """test init - no input files"""
+        with self.assertRaises(ValueError):
+            test_extractor = extractors.LoudAudioFeatureExtractor()
+
+    def test_extract(self):
+        """Test extract with input files"""
+        video_source = TestSourceMedia().one_colour_silent_audio()
+        test_extractor = extractors.LoudAudioFeatureExtractor(input_files=video_source)
+        test_extractor.setup()
+        test_extractor.run()
+        test_extractor.teardown()
+        self.assertEqual(test_extractor.features, [])
+