Method test_pushCR_LF

Lib/test/test_email/test_email.py:3812–3840

FeedParser BufferedSubFile.push() assumed it received complete line endings. A CR ending one push() followed by a LF starting the next push() added an empty line.

(self)

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    def test_pushCR_LF(self):
        '''FeedParser BufferedSubFile.push() assumed it received complete
           line endings.  A CR ending one push() followed by a LF starting
           the next push() added an empty line.
        '''
        imt = [
            ("a\r \n",  2),
            ("b",       0),
            ("c\n",     1),
            ("",        0),
            ("d\r\n",   1),
            ("e\r",     0),
            ("\nf",     1),
            ("\r\n",    1),
          ]
        from email.feedparser import BufferedSubFile, NeedMoreData
        bsf = BufferedSubFile()
        om = []
        nt = 0
        for il, n in imt:
            bsf.push(il)
            nt += n
            n1 = 0
            for ol in iter(bsf.readline, NeedMoreData):
                om.append(ol)
                n1 += 1
            self.assertEqual(n, n1)
        self.assertEqual(len(om), nt)
        self.assertEqual(''.join([il for il, n in imt]), ''.join(om))

    def test_push_random(self):
        from email.feedparser import BufferedSubFile, NeedMoreData