mirror of
https://github.com/Abdess/retroarch_system.git
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46 lines
1.4 KiB
Python
46 lines
1.4 KiB
Python
"""compute_hashes reads a file once per process and change."""
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from __future__ import annotations
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import shutil
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import sys
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import tempfile
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import unittest
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from pathlib import Path
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from unittest import mock
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REPO_ROOT = Path(__file__).resolve().parents[1]
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sys.path.insert(0, str(REPO_ROOT / "scripts"))
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import hashing # noqa: E402
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class HashesAreReadOncePerContent(unittest.TestCase):
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"""verify --all hashed GB_dmg.bin 13 times and scph5501.bin 12, once
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per platform and entry, in one process."""
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def setUp(self):
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self.dir = Path(tempfile.mkdtemp(dir=REPO_ROOT / "tmp"))
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self.addCleanup(shutil.rmtree, self.dir, True)
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self.file = self.dir / "rom.bin"
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self.file.write_bytes(b"a" * 64)
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def test_a_second_ask_reads_nothing(self):
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first = hashing.compute_hashes(self.file)
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with mock.patch.object(hashing, "_compute_hashes", side_effect=AssertionError):
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self.assertEqual(hashing.compute_hashes(self.file), first)
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self.assertEqual(
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hashing.compute_hashes(self.file, frozenset({"md5"})),
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{"md5": first["md5"]},
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)
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def test_a_rewrite_in_place_is_read_again(self):
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first = hashing.compute_hashes(self.file)
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with open(self.file, "r+b") as handle:
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handle.write(b"b" * 64)
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self.assertNotEqual(hashing.compute_hashes(self.file)["sha1"], first["sha1"])
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if __name__ == "__main__":
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unittest.main()
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