lint fix + test fix

Author: liustve

aws-opentelemetry-distro/src/amazon/opentelemetry/distro/patches/_instrumentation_patch.py

@@ -4,7 +4,8 @@
 import os
 from logging import Logger, getLogger
 
-import pkg_resources  # pylint: disable=unused-import
+# pylint: disable=unused-import
+import pkg_resources
 
 from amazon.opentelemetry.distro._utils import is_installed
 from amazon.opentelemetry.distro.patches._resource_detector_patches import _apply_resource_detector_patches

aws-opentelemetry-distro/tests/amazon/opentelemetry/distro/test_otlp_aws_span_exporter.py

@@ -101,7 +101,10 @@ def test_sigv4_exporter_init_invalid_cw_otlp_endpoint(self):
 
     @patch("requests.Session.post")
     @patch("botocore.auth.SigV4Auth.add_auth")
-    def test_sigv4_exporter_export_does_not_add_sigv4_if_not_valid_cw_endpoint(self, mock_sigv4_auth, requests_mock):
+    @patch("botocore.session.Session")
+    def test_sigv4_exporter_export_does_not_add_sigv4_if_not_valid_cw_endpoint(
+        self, botocore_mock, mock_sigv4_auth, requests_mock
+    ):
         """Tests that if the OTLP endpoint is not a valid XRay endpoint but the credentials are valid,
         SigV4 authentication method is called but fails so NO headers are injected into the existing Session headers."""
 
@@ -119,6 +122,13 @@ def test_sigv4_exporter_export_does_not_add_sigv4_if_not_valid_cw_endpoint(self,
         # SigV4 mock authentication injection
         mock_sigv4_auth.side_effect = self.mock_add_auth
 
+        mock_botocore_session = MagicMock()
+        botocore_mock.return_value = mock_botocore_session
+
+        mock_botocore_session.get_credentials.return_value = Credentials(
+            access_key="test_key", secret_key="test_secret", token="test_token"
+        )
+
         # For each invalid CW OTLP endpoint, validate that SigV4 is not injected
         self.invalid_otlp_tracing_endpoints.append("https://xray.bad-region-1.amazonaws.com/v1/traces")
         for bad_endpoint in self.invalid_otlp_tracing_endpoints: