chore(spanner): create multi-region ENTERPRISE_PLUS instance in test_create_instance_partition

Author: sakthivelmanii

packages/google-cloud-spanner/samples/samples/snippets_test.py

@@ -213,18 +213,32 @@ def test_create_and_update_instance_default_backup_schedule_type(
     retry_429(instance.delete)()
 
 
-def test_create_instance_partition(capsys, instance_partition_instance_id):
-    # Unable to use create_instance since it has editions set where partitions are unsupported.
-    # The minimal requirement for editions is ENTERPRISE_PLUS for the paritions to get supported.
-    retry_429(snippets.create_instance_with_processing_units)(
-        instance_partition_instance_id, 1000
+def test_create_instance_partition(
+    capsys, instance_partition_instance_id, multi_region_instance_config
+):
+    from google.cloud.spanner_admin_instance_v1.types import spanner_instance_admin
+
+    spanner_client = spanner.Client()
+    request = spanner_instance_admin.CreateInstanceRequest(
+        parent=spanner_client.project_name,
+        instance_id=instance_partition_instance_id,
+        instance=spanner_instance_admin.Instance(
+            config=multi_region_instance_config,
+            display_name="Instance for instance partition test",
+            node_count=1,
+            edition=spanner_instance_admin.Instance.Edition.ENTERPRISE_PLUS,
+        ),
     )
+    operation = retry_429(spanner_client.instance_admin_api.create_instance)(
+        request=request
+    )
+    operation.result(900)
+
     retry_429(snippets.create_instance_partition)(
         instance_partition_instance_id, "my-instance-partition"
     )
     out, _ = capsys.readouterr()
     assert "Created instance partition my-instance-partition" in out
-    spanner_client = spanner.Client()
     instance = spanner_client.instance(instance_partition_instance_id)
     retry_429(instance.delete)()