pyramid: use test_base to fetch metrics for assertions (open-telemetry#4129)

* pyramid: use test_base to fetch metrics for assertions

* Fix assertion

* Update instrumentation/opentelemetry-instrumentation-pyramid/tests/test_automatic.py

---------

Co-authored-by: Riccardo Magliocchetti <riccardo.magliocchetti@gmail.com>

Author: 2 people

instrumentation/opentelemetry-instrumentation-pyramid/tests/test_automatic.py

@@ -223,28 +223,22 @@ def test_pyramid_metric(self):
         self.client.get("/hello/756")
         self.client.get("/hello/756")
         self.client.get("/hello/756")
-        metrics_list = self.memory_metrics_reader.get_metrics_data()
+        metrics = self.get_sorted_metrics()
         number_data_point_seen = False
         histogram_data_point_seen = False
-        self.assertTrue(len(metrics_list.resource_metrics) == 1)
-        for resource_metric in metrics_list.resource_metrics:
-            self.assertTrue(len(resource_metric.scope_metrics) == 1)
-            for scope_metric in resource_metric.scope_metrics:
-                self.assertTrue(len(scope_metric.metrics) == 2)
-                for metric in scope_metric.metrics:
-                    self.assertIn(metric.name, _expected_metric_names)
-                    data_points = list(metric.data.data_points)
-                    self.assertEqual(len(data_points), 1)
-                    for point in data_points:
-                        if isinstance(point, HistogramDataPoint):
-                            self.assertEqual(point.count, 3)
-                            histogram_data_point_seen = True
-                        if isinstance(point, NumberDataPoint):
-                            number_data_point_seen = True
-                        for attr in point.attributes:
-                            self.assertIn(
-                                attr, _recommended_attrs[metric.name]
-                            )
+        self.assertEqual(len(metrics), 2)
+        for metric in metrics:
+            self.assertIn(metric.name, _expected_metric_names)
+            data_points = list(metric.data.data_points)
+            self.assertEqual(len(data_points), 1)
+            for point in data_points:
+                if isinstance(point, HistogramDataPoint):
+                    self.assertEqual(point.count, 3)
+                    histogram_data_point_seen = True
+                if isinstance(point, NumberDataPoint):
+                    number_data_point_seen = True
+                for attr in point.attributes:
+                    self.assertIn(attr, _recommended_attrs[metric.name])
         self.assertTrue(number_data_point_seen and histogram_data_point_seen)
 
     def test_basic_metric_success(self):