test: add tests for RecordBatchStream resource cleanup

Author: kosiew

python/tests/test_record_batch_stream.py

@@ -0,0 +1,36 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""Tests for RecordBatchStream resource cleanup."""
+
+
+def test_record_batch_stream_drop(ctx):
+    """Dropping a RecordBatchStream without iterating should release its
+    resources so the Python interpreter can exit cleanly."""
+
+    stream = ctx.sql("SELECT 1").execute_stream()
+    del stream
+
+
+def test_record_batch_stream_close(ctx):
+    """Explicitly closing a RecordBatchStream before dropping it is
+    idempotent and should not raise."""
+
+    stream = ctx.sql("SELECT 1").execute_stream()
+    stream.close()
+    stream.close()
+    del stream