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46 lines
1.1 KiB
46 lines
1.1 KiB
from __future__ import absolute_import, division, print_function
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import pytest
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from dask.hashing import hashers, hash_buffer, hash_buffer_hex
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np = pytest.importorskip('numpy')
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buffers = [
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b'abc',
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bytearray(b'123'),
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memoryview(b'456'),
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np.array(42),
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np.ones((100, 100)),
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np.zeros((100, 100), dtype=[('a', 'i4'), ('b', 'i2')]),
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np.ones(10000, dtype=np.int8)[1:], # unaligned
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]
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@pytest.mark.parametrize('x', buffers)
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def test_hash_buffer(x):
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for hasher in [None] + hashers:
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h = hash_buffer(x, hasher=hasher)
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assert isinstance(h, bytes)
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assert 8 <= len(h) < 32
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assert h == hash_buffer(x, hasher=hasher)
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@pytest.mark.parametrize('x', buffers)
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def test_hash_buffer_hex(x):
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for hasher in [None] + hashers:
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h = hash_buffer_hex(x, hasher=hasher)
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assert isinstance(h, str)
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assert 16 <= len(h) < 64
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assert h == hash_buffer_hex(x, hasher=hasher)
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@pytest.mark.parametrize('hasher', hashers)
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def test_hashers(hasher):
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# Sanity check
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x = b'x'
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h = hasher(x)
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assert isinstance(h, bytes)
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assert 8 <= len(h) < 32
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