Mercurial > cpython-lru_cache-weakref
diff Lib/test/test_codecs.py @ 61850:846dbcf970ab 3.1
Merged revisions 81461 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k
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r81461 | victor.stinner | 2010-05-22 04:16:27 +0200 (sam., 22 mai 2010) | 10 lines
Merged revisions 81459 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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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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| author | Victor Stinner <victor.stinner@haypocalc.com> |
|---|---|
| date | Sat, 22 May 2010 02:17:42 +0000 |
| parents | 149badf73bca |
| children | cd4936691163 |
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--- a/Lib/test/test_codecs.py Fri May 21 22:05:15 2010 +0000 +++ b/Lib/test/test_codecs.py Sat May 22 02:17:42 2010 +0000 @@ -1592,6 +1592,26 @@ b"\xe4\xeb\xef\xf6\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', 'w+', 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(): support.run_unittest( UTF32Test, @@ -1619,6 +1639,7 @@ WithStmtTest, TypesTest, SurrogateEscapeTest, + BomTest, )