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[3.12] gh-131219: Improve tests in test_lzma.py by adding more asserts (GH-131220) #131237

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Merged
merged 2 commits into from
Mar 14, 2025
Merged

[3.12] gh-131219: Improve tests in test_lzma.py by adding more asserts (GH-131220) #131237

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[3.12] gh-131219: Improve tests in `test_lzma.py` by adding more asse…
sobolevn Mar 14, 2025
7036a65
Update test_lzma.py
sobolevn Mar 14, 2025
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34 changes: 17 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 +538,13 @@ class FileTestCase(unittest.TestCase):

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

def test_init_with_PathLike_filename(self):
filename = FakePath(TESTFN)
Expand All @@ -567,25 +567,25 @@ 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)
with LZMAFile(TESTFN, "rb") as f:
self.assertIsInstance(f, LZMAFile)
with LZMAFile(TESTFN, "w") as f:
self.assertIsInstance(f, LZMAFile)
with LZMAFile(TESTFN, "wb") as f:
self.assertIsInstance(f, LZMAFile)
with LZMAFile(TESTFN, "a") as f:
self.assertIsInstance(f, LZMAFile)
with LZMAFile(TESTFN, "ab") as f:
self.assertIsInstance(f, LZMAFile)

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)
with self.assertRaises(FileExistsError):
LZMAFile(TESTFN, mode)

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