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gh-116608: Ignore UTF-16 BOM in importlib.resources._functional tests #117569

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Merged
merged 1 commit into from
Apr 5, 2024
Merged

gh-116608: Ignore UTF-16 BOM in importlib.resources._functional tests #117569

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14 changes: 10 additions & 4 deletions Lib/test/test_importlib/resources/test_functional.py
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,12 @@ def _gen_resourcetxt_path_parts(self):
with self.subTest(path_parts=path_parts):
yield path_parts

def assertEndsWith(self, string, suffix):
"""Assert that `string` ends with `suffix`.

Used to ignore an architecture-specific UTF-16 byte-order mark."""
self.assertEqual(string[-len(suffix):], suffix)

def test_read_text(self):
self.assertEqual(
resources.read_text(self.anchor01, 'utf-8.file'),
Expand Down Expand Up @@ -65,12 +71,12 @@ def test_read_text(self):
),
'\x00\x01\x02\x03',
)
self.assertEqual(
self.assertEndsWith( # ignore the BOM
resources.read_text(
self.anchor01, 'utf-16.file',
errors='backslashreplace',
),
'Hello, UTF-16 world!\n'.encode('utf-16').decode(
'Hello, UTF-16 world!\n'.encode('utf-16-le').decode(
errors='backslashreplace',
),
)
Expand Down Expand Up @@ -112,9 +118,9 @@ def test_open_text(self):
self.anchor01, 'utf-16.file',
errors='backslashreplace',
) as f:
self.assertEqual(
self.assertEndsWith( # ignore the BOM
f.read(),
'Hello, UTF-16 world!\n'.encode('utf-16').decode(
'Hello, UTF-16 world!\n'.encode('utf-16-le').decode(
errors='backslashreplace',
),
)
Expand Down