8000 gh-131219: Improve tests in `test_lzma.py` by adding more asserts by sobolevn · Pull Request #131220 · python/cpython · GitHub
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gh-131219: Improve tests in test_lzma.py by adding more asserts #131220

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Merged
merged 2 commits into from
Mar 14, 2025
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gh-131219: Improve tests in test_lzma.py by adding more asserts #131220

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f9c32df
gh-131219: Improve tests in `test_lzma.py` by adding more asserts
sobolevn Mar 14, 2025
d794828
Address review
sobolevn Mar 14, 2025
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gh-131219: Improve tests in test_lzma.py by adding more asserts
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@sobolevn
sobolevn committed Mar 14, 2025
commit f9c32dff19707d2c7654ce1eef8da7206317dc9d
44 changes: 27 additions & 17 deletions Lib/test/test_lzma.py
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Original file line number Diff line number Diff line change
Expand Up @@ -538,13 +538,17 @@ class FileTestCase(unittest.TestCase):

def test_init(self):
with LZMAFile(BytesIO(COMPRESSED_XZ)) as f:
pass
self.assertIsInstance(f, LZMAFile)
self.assertEqual(f.mode, "rb")
with LZMAFile(BytesIO(), "w") as f:
pass
self.assertIsInstance(f, LZMAFile)
self.assertEqual(f.mode, "wb")
with LZMAFile(BytesIO(), "x") as f:
pass
self.assertIsInstance(f, LZMAFile)
self.assertEqual(f.mode, "wb")
with LZMAFile(BytesIO(), "a") as f:
pass
self.assertIsInstance(f, LZMAFile)
self.assertEqual(f.mode, "wb")

def test_init_with_PathLike_filename(self):
filename = FakePath(TESTFN)
Expand Down Expand Up @@ -573,25 +577,31 @@ def test_init_with_filename(self):

def test_init_mode(self):
with TempFile(TESTFN):
with LZMAFile(TESTFN, "r"):
pass
with LZMAFile(TESTFN, "rb"):
pass
with LZMAFile(TESTFN, "w"):
pass
with LZMAFile(TESTFN, "wb"):
pass
with LZMAFile(TESTFN, "a"):
pass
with LZMAFile(TESTFN, "ab"):
pass
with LZMAFile(TESTFN, "r") as f:
self.assertIsInstance(f, LZMAFile)
self.assertEqual(f.mode, "rb")
with LZMAFile(TESTFN, "rb") as f:
self.assertIsInstance(f, LZMAFile)
self.assertEqual(f.mode, "rb")
with LZMAFile(TESTFN, "w") as f:
self.assertIsInstance(f, LZMAFile)
self.assertEqual(f.mode, "wb")
with LZMAFile(TESTFN, "wb") as f:
self.assertIsInstance(f, LZMAFile)
self.assertEqual(f.mode, "wb")
with LZMAFile(TESTFN, "a") as f:
self.assertIsInstance(f, LZMAFile)
self.assertEqual(f.mode, "wb")
with LZMAFile(TESTFN, "ab") as f:
self.assertIsInstance(f, LZMAFile)
self.assertEqual(f.mode, "wb")

def test_init_with_x_mode(self):
self.addCleanup(unlink, TESTFN)
for mode in ("x", "xb"):
unlink(TESTFN)
with LZMAFile(TESTFN, mode) as f:
pass
self.assertIsInstance(f, LZMAFile)
self.assertEqual(f.mode, 'wb')
with self.assertRaises(FileExistsError):
LZMAFile(TESTFN, mode)
Expand Down
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