Fix tests

Author: xrmx

exporter/opentelemetry-exporter-otlp-proto-common/tests/test_metrics_encoder.py

@@ -17,8 +17,8 @@
 
 from opentelemetry.exporter.otlp.proto.common._internal.metrics_encoder import (
     EncodingException,
-    truncate_trailing_zeros,
     create_exponential_histogram_buckets,
+    truncate_trailing_zeros,
 )
 from opentelemetry.exporter.otlp.proto.common.metrics_encoder import (
     encode_metrics,
@@ -864,8 +864,10 @@ def test_truncate_trailing_zeros(self):
         self.assertEqual([1, -1], truncate_trailing_zeros([1, -1, 0, 0]))
 
     def test_create_histogram_buckets(self):
-        self.assertIsNone([], create_exponential_histogram_buckets(0, [0, 0, 0, 0]))
-        self.assertIsNotNone([], create_exponential_histogram_buckets(0, [1]))
+        self.assertIsNone(
+            create_exponential_histogram_buckets(0, [0, 0, 0, 0])
+        )
+        self.assertIsNotNone(create_exponential_histogram_buckets(0, [1]))
 
     def test_encode_exponential_histogram(self):
         exponential_histogram = Metric(
@@ -883,7 +885,9 @@ def test_encode_exponential_histogram(self):
                         scale=4,
                         zero_count=5,
                         positive=Buckets(offset=6, bucket_counts=[7, 8, 0]),
-                        negative=Buckets(offset=9, bucket_counts=[10, 11, 0, 0]),
+                        negative=Buckets(
+                            offset=9, bucket_counts=[10, 11, 0, 0]
+                        ),
                         flags=12,
                         min=13.0,
                         max=14.0,