test: fix blob snippets tests gcs folder wipeout (#2044)

Author: GarrettWu

samples/snippets/conftest.py

@@ -63,6 +63,17 @@ def gcs_bucket(storage_client: storage.Client) -> Generator[str, None, None]:
         blob.delete()
 
 
+@pytest.fixture(scope="session")
+def gcs_bucket_snippets(storage_client: storage.Client) -> Generator[str, None, None]:
+    bucket_name = "bigframes_blob_test_snippet_with_data_wipeout"
+
+    yield bucket_name
+
+    bucket = storage_client.get_bucket(bucket_name)
+    for blob in bucket.list_blobs():
+        blob.delete()
+
+
 @pytest.fixture(autouse=True)
 def reset_session() -> None:
     """An autouse fixture ensuring each sample runs in a fresh session.

samples/snippets/multimodal_test.py

@@ -13,9 +13,9 @@
 # limitations under the License.
 
 
-def test_multimodal_dataframe(gcs_bucket: str) -> None:
+def test_multimodal_dataframe(gcs_bucket_snippets: str) -> None:
     # destination folder must be in a GCS bucket that the BQ connection service account (default or user provided) has write access to.
-    dst_bucket = f"gs://{gcs_bucket}"
+    dst_bucket = f"gs://{gcs_bucket_snippets}"
     # [START bigquery_dataframes_multimodal_dataframe_create]
     import bigframes