mirror of https://github.com/python/cpython
26 lines
755 B
Python
26 lines
755 B
Python
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import test_support,unittest
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import codecs
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import StringIO
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class UTF16Test(unittest.TestCase):
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spamle = '\xff\xfes\x00p\x00a\x00m\x00s\x00p\x00a\x00m\x00'
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spambe = '\xfe\xff\x00s\x00p\x00a\x00m\x00s\x00p\x00a\x00m'
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def test_only_one_bom(self):
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_,_,reader,writer = codecs.lookup("utf-16")
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# encode some stream
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s = StringIO.StringIO()
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f = writer(s)
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f.write(u"spam")
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f.write(u"spam")
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d = s.getvalue()
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# check whether there is exactly one BOM in it
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self.assert_(d == self.spamle or d == self.spambe)
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# try to read it back
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s = StringIO.StringIO(d)
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f = reader(s)
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self.assertEquals(f.read(), u"spamspam")
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test_support.run_unittest(UTF16Test)
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