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Merged revisions 81459 via svnmerge from

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........
  r81459 | victor.stinner | 2010-05-22 04:11:07 +0200 (sam., 22 mai 2010) | 3 lines

  Issue #6268: Fix seek() method of codecs.open(), don't read the BOM twice
  after seek(0)
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This commit is contained in:
Victor Stinner 2010-05-22 02:12:28 +00:00
parent 9a4a01df75
commit f5a3eafaac
3 changed files with 28 additions and 0 deletions
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21
Lib/test/test_codecs.py
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@ -1488,6 +1488,26 @@ class WithStmtTest(unittest.TestCase):
self.assertEquals(srw.read(), u"\xfc")
class BomTest(unittest.TestCase):
def test_seek0(self):
data = "1234567890"
tests = ("utf-16",
"utf-16-le",
"utf-16-be",
"utf-32",
"utf-32-le",
"utf-32-be")
for encoding in tests:
with codecs.open('foo', 'wt+', encoding=encoding) as f:
# Check if the BOM is written only once
f.write(data)
f.write(data)
f.seek(0)
self.assertEquals(f.read(), data * 2)
f.seek(0)
self.assertEquals(f.read(), data * 2)
def test_main():
test_support.run_unittest(
UTF32Test,
@ -1516,6 +1536,7 @@ def test_main():
BasicStrTest,
CharmapTest,
WithStmtTest,
BomTest,
)