cuda.core: raise BufferError instead of RuntimeError in check_has_dlpack (#2160)

Author: rluo8

cuda_core/cuda/core/_memoryview.pyx

@@ -996,7 +996,7 @@ cdef bint check_has_dlpack(obj) except*:
     elif hasattr(obj, "__cuda_array_interface__"):
         has_dlpack = False
     else:
-        raise RuntimeError(
+        raise BufferError(
             "the input object does not support any data exchange protocol")
     return has_dlpack
 

cuda_core/tests/test_utils.py

@@ -1044,7 +1044,7 @@ def test_check_has_dlpack_plain_object_raises():
     class _NoProto:
         pass
 
-    with pytest.raises(RuntimeError, match="does not support any data exchange protocol"):
+    with pytest.raises(BufferError, match="does not support any data exchange protocol"):
         StridedMemoryView.from_any_interface(_NoProto(), stream_ptr=-1)