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from __future__ import annotations
import pytest
from distributed.protocol.utils import host_array, host_array_from_buffers
def test_host_array():
a = host_array(5)
a[:3] = b"abc"
a[3:] = b"de"
assert bytes(a) == b"abcde"
def test_host_array_from_buffers():
a = host_array_from_buffers([b"abc", b"de"])
a[:1] = b"f"
assert bytes(a) == b"fbcde"
def test_host_array_from_buffers_numpy():
"""Test for word sizes larger than 1 byte"""
np = pytest.importorskip("numpy")
a = host_array_from_buffers(
[np.array([1, 2], dtype="u1"), np.array([3, 4], dtype="u8")]
)
assert a.nbytes == 18
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