58 lines
1.4 KiB
Python
58 lines
1.4 KiB
Python
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from __future__ import annotations
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import shlex
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import subprocess
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import pytest
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import hashImage
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def hamming_distance(h1, h2) -> int:
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if isinstance(h1, int):
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n1 = h1
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else:
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n1 = int(h1, 2)
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if isinstance(h2, int):
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n2 = h2
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else:
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n2 = int(h2, 2)
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# xor the two numbers
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n = n1 ^ n2
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# count up the 1's in the binary string
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return sum(b == '1' for b in bin(n)[2:])
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def test_hash(request, file, record_property):
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hasher = request.config.getoption('--hasher')
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try:
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python = hashImage.main(['-file', file]) + '\n'
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except Exception:
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pytest.skip('python imagehash failed')
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return
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sh = shlex.shlex(hasher, punctuation_chars=True, posix=True)
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sh.whitespace_split = True
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cmd_list = list(sh)
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for i, p in enumerate(cmd_list):
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if p == '{}':
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cmd_list[i] = file
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external = subprocess.run(cmd_list, shell=None, capture_output=True)
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external_stdout = str(external.stdout, encoding='utf-8')
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if external.returncode != 0:
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pytest.skip(str(external.stderr))
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return
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external_stdout_h = python_h = ''
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for p, e in zip(python.split('\n'), external_stdout.splitlines()):
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p_, e_ = p.split(' '), e.split(' ')
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h = hamming_distance(p_[1], e_[1])
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record_property(p_[0], h)
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external_stdout_h += ' '.join(e_) + f' {h}\n'
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python_h += ' '.join(p_) + f' {h}\n'
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assert external_stdout_h == python_h
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