69 lines
2.5 KiB
Python
69 lines
2.5 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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import pyarrow as pa
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import pytest
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def test_device_memory_manager():
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mm = pa.default_cpu_memory_manager()
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assert mm.is_cpu
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device = mm.device
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assert device.is_cpu
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assert device.device_id == -1
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assert device.device_type == pa.DeviceAllocationType.CPU
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assert device.type_name == "arrow::CPUDevice"
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assert device == device
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assert repr(device) == "<pyarrow.Device: CPUDevice()>"
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assert repr(mm) == "<pyarrow.MemoryManager device: CPUDevice()>"
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def test_buffer_device():
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arr = pa.array([0, 1, 2])
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buf = arr.buffers()[1]
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assert buf.device_type == pa.DeviceAllocationType.CPU
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assert isinstance(buf.device, pa.Device)
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assert isinstance(buf.memory_manager, pa.MemoryManager)
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assert buf.is_cpu
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assert buf.device.is_cpu
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assert buf.device == pa.default_cpu_memory_manager().device
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assert buf.memory_manager.is_cpu
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def test_copy_to():
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mm = pa.default_cpu_memory_manager()
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arr = pa.array([0, 1, 2])
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batch = pa.record_batch({"col": arr})
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for dest in [mm, mm.device]:
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arr_copied = arr.copy_to(dest)
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assert arr_copied.equals(arr)
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assert arr_copied.buffers()[1].device == mm.device
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assert arr_copied.buffers()[1].address != arr.buffers()[1].address
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batch_copied = batch.copy_to(dest)
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assert batch_copied.equals(batch)
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assert batch_copied["col"].buffers()[1].device == mm.device
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assert batch_copied["col"].buffers()[1].address != arr.buffers()[1].address
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with pytest.raises(TypeError, match="Argument 'destination' has incorrect type"):
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arr.copy_to(mm.device.device_type)
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with pytest.raises(TypeError, match="Argument 'destination' has incorrect type"):
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batch.copy_to(mm.device.device_type)
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