reload trace on teardown

Signed-off-by: Alex Boten <[email protected]>

Author: Alex Boten

ext/opentelemetry-ext-testutil/src/opentelemetry/ext/testutil/wsgitestutil.py

@@ -1,6 +1,7 @@
 import io
 import unittest
 import wsgiref.util as wsgiref_util
+from importlib import reload
 
 from opentelemetry import trace as trace_api
 from opentelemetry.sdk.trace import TracerSource, export
@@ -16,6 +17,10 @@ def setUpClass(cls):
             lambda T: TracerSource()
         )
 
+    @classmethod
+    def tearDownClass(cls):
+        reload(trace_api)
+
     def setUp(self):
         tracer_source = trace_api.tracer_source()