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#!/usr/bin/env python3
import os
import sys
def permit_osx_workaround(m1, m2):
import platform
if platform.system().lower() != 'darwin':
return False
if m2 % 10000 != 0:
return False
if m1//10000 != m2//10000:
return False
return True
if len(sys.argv) == 2:
assert os.path.exists(sys.argv[1])
elif len(sys.argv) == 3:
f1 = sys.argv[1]
f2 = sys.argv[2]
m1 = os.stat(f1).st_mtime_ns
m2 = os.stat(f2).st_mtime_ns
# Compare only os.stat()
if m1 != m2:
# Under macOS the lower four digits sometimes get assigned
# zero, even though shutil.copy2 should preserve metadata.
# Just have to accept it, I guess.
if not permit_osx_workaround(m1, m2):
raise RuntimeError(f'mtime of {f1!r} ({m1!r}) != mtime of {f2!r} ({m2!r})')
import filecmp
if not filecmp.cmp(f1, f2):
raise RuntimeError(f'{f1!r} != {f2!r}')
else:
raise AssertionError
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