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feat(pyfory.util): introduce is_big_endian constant and export; add endianness tests #2530

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feat(pyfory.util): introduce is_big_endian constant and export; add endianness tests #2530

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13842f0
test(python): validate endian flags
6mmLIU Aug 26, 2025
e9ac902
create-valuable-pr-without-downstream-impact
6mmLIU Aug 26, 2025
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12 changes: 12 additions & 0 deletions python/pyfory/tests/test_util.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
import sys

from pyfory.util import is_little_endian, is_big_endian


def test_endian_flags():
# 验证 is_little_endian 与 is_big_endian 与系统字节序一致
assert is_little_endian == (sys.byteorder == "little")
assert is_big_endian == (sys.byteorder == "big")
# 两者应当互斥
assert is_little_endian != is_big_endian

3 changes: 3 additions & 0 deletions python/pyfory/util.py
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Expand Up @@ -83,6 +83,8 @@ def __call__(self, *_args, **_kwargs):


is_little_endian = sys.byteorder == "little"
# 新增的大端序标记，便于调用方直接判断当前平台是否为大端序
is_big_endian = sys.byteorder == "big"


__all__ = [
Expand All @@ -92,4 +94,5 @@ def __call__(self, *_args, **_kwargs):
"set_bit_to",
"lazy_import",
"is_little_endian",
"is_big_endian",
]
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