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Viewing changes to bzrlib/tests/test_diff.py

  • Committer: Martin Pool
  • Date: 2006-06-20 05:32:16 UTC
  • mfrom: (1797 +trunk)
  • mto: This revision was merged to the branch mainline in revision 1798.
  • Revision ID: mbp@sourcefrog.net-20060620053216-817857d7ca3e9d1f
[merge] bzr.dev

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bzrlib/tests/test_diff.py
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import os
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from cStringIO import StringIO
 
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import errno
 
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from tempfile import TemporaryFile
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from bzrlib.diff import internal_diff, show_diff_trees
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from bzrlib.errors import BinaryFile
 
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from bzrlib.diff import internal_diff, external_diff, show_diff_trees
 
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from bzrlib.errors import BinaryFile, NoDiff
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import bzrlib.patiencediff
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from bzrlib.tests import TestCase, TestCaseWithTransport, TestCaseInTempDir
 
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from bzrlib.tests import (TestCase, TestCaseWithTransport,
 
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                          TestCaseInTempDir, TestSkipped)
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def udiff_lines(old, new, allow_binary=False):
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    return output.readlines()
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def external_udiff_lines(old, new, use_stringio=False):
 
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    if use_stringio:
 
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        # StringIO has no fileno, so it tests a different codepath
 
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        output = StringIO()
 
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    else:
 
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        output = TemporaryFile()
 
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    try:
 
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        external_diff('old', old, 'new', new, output, diff_opts=['-u'])
 
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    except NoDiff:
 
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        raise TestSkipped('external "diff" not present to test')
 
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    output.seek(0, 0)
 
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    lines = output.readlines()
 
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    output.close()
 
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    return lines
 
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class TestDiff(TestCase):
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    def test_add_nl(self):
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        udiff_lines([1023 * 'a' + '\x00'], [], allow_binary=True)
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        udiff_lines([], [1023 * 'a' + '\x00'], allow_binary=True)
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    def test_external_diff(self):
 
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        lines = external_udiff_lines(['boo\n'], ['goo\n'])
 
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        self.check_patch(lines)
 
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    def test_external_diff_no_fileno(self):
 
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        # Make sure that we can handle not having a fileno, even
 
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        # if the diff is large
 
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        lines = external_udiff_lines(['boo\n']*10000,
 
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                                     ['goo\n']*10000,
 
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                                     use_stringio=True)
 
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        self.check_patch(lines)
 
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    def test_internal_diff_default(self):
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        # Default internal diff encoding is utf8
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        output = StringIO()