Ruffification and fixed bug

tests/test_walk.py

@@ -3,35 +3,35 @@ import wavinfo
 
 import glob
 
+
 class TestWalk(unittest.TestCase):
     def test_walk_metadata(self):
-        test_file = 'tests/test_files/protools/PT A101_4.A1.wav'
+        test_file = "tests/test_files/protools/PT A101_4.A1.wav"
         info = wavinfo.WavInfoReader(test_file)
 
-        tested_data , tested_format = False, False
+        tested_data, tested_format = False, False
         for scope, key, value in info.walk():
-            if scope == 'fmt':
-                if key == 'channel_count':
+            if scope == "fmt":
+                if key == "channel_count":
                     tested_format = True
                     self.assertEqual(value, 2)
-            if scope == 'data':
-                if key == 'frame_count':
+            if scope == "data":
+                if key == "frame_count":
                     tested_data = True
                     self.assertEqual(value, 144140)
 
         self.assertTrue(tested_data and tested_format)
 
     def test_walk_all(self):
-        for file in glob.glob('tests/test_files/**/*.wav'):
+        for file in glob.glob("tests/test_files/**/*.wav"):
             info = wavinfo.WavInfoReader(file)
-            
+
             try:
                 for _, _, _ in info.walk():
-                    pass 
+                    pass
             except:
                 self.fail(f"Failed to walk metadata in file {file}")
 
-        
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     unittest.main()