chore: Fix oauth scope error for system tests (test_model_evaluation and test_language_models)

PiperOrigin-RevId: 594293058

Author: matthew29tang

tests/system/aiplatform/test_language_models.py

@@ -19,7 +19,7 @@
 
 import pytest
 
-
+from google import auth
 from google.cloud import aiplatform
 from google.cloud.aiplatform.compat.types import (
     job_state as gca_job_state,
@@ -309,7 +309,14 @@ async def test_text_embedding_async(self):
 
     def test_tuning(self, shared_state):
         """Test tuning, listing and loading models."""
-        aiplatform.init(project=e2e_base._PROJECT, location=e2e_base._LOCATION)
+        credentials, _ = auth.default(
+            scopes=["https://www.googleapis.com/auth/cloud-platform"]
+        )
+        aiplatform.init(
+            project=e2e_base._PROJECT,
+            location=e2e_base._LOCATION,
+            credentials=credentials,
+        )
 
         model = language_models.TextGenerationModel.from_pretrained("text-bison@001")
 

tests/system/aiplatform/test_model_evaluation.py

@@ -61,7 +61,6 @@
     "tear_down_resources",
 )
 class TestModelEvaluationJob(e2e_base.TestEndToEnd):
-
     _temp_prefix = "temp_vertex_sdk_model_evaluation_test"
 
     def setup_method(self):
@@ -84,12 +83,13 @@ def staging_bucket(self, storage_client):
         yield bucket
 
     def test_model_evaluate_custom_tabular_model(self, staging_bucket, shared_state):
+        credentials, _ = auth.default(
+            scopes=["https://www.googleapis.com/auth/cloud-platform"]
+        )
         aiplatform.init(
             project=_TEST_PROJECT,
             location=_TEST_LOCATION,
-            credentials=auth.default(
-                scopes=["https://www.googleapis.com/auth/cloud-platform"]
-            ),
+            credentials=credentials,
         )
 
         custom_model = aiplatform.Model(