Add SyclQueue boxing without parent test

numba_dpex/tests/core/types/DpctlSyclQueue/test_box.py

@@ -0,0 +1,33 @@
+# SPDX-FileCopyrightText: 2020 - 2023 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+
+"""
+Tests for boxing for dpnp.ndarray
+"""
+
+import dpnp
+from dpctl import SyclQueue
+
+from numba_dpex import dpjit
+
+
+def test_boxing_without_parent():
+    """Tests basic boxing and unboxing of a dpnp.ndarray object.
+
+    Checks if we can pass in and return a dpctl.ndarray object to and
+    from a dpjit decorated function.
+    """
+
+    @dpjit
+    def func(arr):
+        queue = arr.sycl_queue
+        return queue
+
+    arr = dpnp.empty(10)
+
+    q = func(arr)
+
+    assert q is not None
+    assert isinstance(q, SyclQueue)
+    assert id(q) != id(arr.sycl_queue)