tests: fix test-match.py on Python3

# skip-blame just b prefixes

Differential Revision: https://phab.mercurial-scm.org/D5835

tests/test-match.py

@@ -1,835 +1,835 b''
 from __future__ import absolute_import
 
 import unittest
 
 import silenttestrunner
 
 from mercurial import (
     match as matchmod,
     util,
 )
 
 class BaseMatcherTests(unittest.TestCase):
 
     def testVisitdir(self):
         m = matchmod.basematcher(b'', b'')
         self.assertTrue(m.visitdir(b'.'))
         self.assertTrue(m.visitdir(b'dir'))
 
     def testVisitchildrenset(self):
         m = matchmod.basematcher(b'', b'')
         self.assertEqual(m.visitchildrenset(b'.'), b'this')
         self.assertEqual(m.visitchildrenset(b'dir'), b'this')
 
 class AlwaysMatcherTests(unittest.TestCase):
 
     def testVisitdir(self):
         m = matchmod.alwaysmatcher(b'', b'')
         self.assertEqual(m.visitdir(b'.'), b'all')
         self.assertEqual(m.visitdir(b'dir'), b'all')
 
     def testVisitchildrenset(self):
         m = matchmod.alwaysmatcher(b'', b'')
         self.assertEqual(m.visitchildrenset(b'.'), b'all')
         self.assertEqual(m.visitchildrenset(b'dir'), b'all')
 
 class NeverMatcherTests(unittest.TestCase):
 
     def testVisitdir(self):
         m = matchmod.nevermatcher(b'', b'')
         self.assertFalse(m.visitdir(b'.'))
         self.assertFalse(m.visitdir(b'dir'))
 
     def testVisitchildrenset(self):
         m = matchmod.nevermatcher(b'', b'')
         self.assertEqual(m.visitchildrenset(b'.'), set())
         self.assertEqual(m.visitchildrenset(b'dir'), set())
 
 class PredicateMatcherTests(unittest.TestCase):
     # predicatematcher does not currently define either of these methods, so
     # this is equivalent to BaseMatcherTests.
 
     def testVisitdir(self):
         m = matchmod.predicatematcher(b'', b'', lambda *a: False)
         self.assertTrue(m.visitdir(b'.'))
         self.assertTrue(m.visitdir(b'dir'))
 
     def testVisitchildrenset(self):
         m = matchmod.predicatematcher(b'', b'', lambda *a: False)
         self.assertEqual(m.visitchildrenset(b'.'), b'this')
         self.assertEqual(m.visitchildrenset(b'dir'), b'this')
 
 class PatternMatcherTests(unittest.TestCase):
 
     def testVisitdirPrefix(self):
         m = matchmod.match(b'x', b'', patterns=[b'path:dir/subdir'])
         assert isinstance(m, matchmod.patternmatcher)
         self.assertTrue(m.visitdir(b'.'))
         self.assertTrue(m.visitdir(b'dir'))
         self.assertEqual(m.visitdir(b'dir/subdir'), b'all')
         # OPT: This should probably be 'all' if its parent is?
         self.assertTrue(m.visitdir(b'dir/subdir/x'))
         self.assertFalse(m.visitdir(b'folder'))
 
     def testVisitchildrensetPrefix(self):
         m = matchmod.match(b'x', b'', patterns=[b'path:dir/subdir'])
         assert isinstance(m, matchmod.patternmatcher)
         self.assertEqual(m.visitchildrenset(b'.'), b'this')
         self.assertEqual(m.visitchildrenset(b'dir'), b'this')
         self.assertEqual(m.visitchildrenset(b'dir/subdir'), b'all')
         # OPT: This should probably be 'all' if its parent is?
         self.assertEqual(m.visitchildrenset(b'dir/subdir/x'), b'this')
         self.assertEqual(m.visitchildrenset(b'folder'), set())
 
     def testVisitdirRootfilesin(self):
         m = matchmod.match(b'x', b'', patterns=[b'rootfilesin:dir/subdir'])
         assert isinstance(m, matchmod.patternmatcher)
         self.assertTrue(m.visitdir(b'.'))
         self.assertFalse(m.visitdir(b'dir/subdir/x'))
         self.assertFalse(m.visitdir(b'folder'))
         # FIXME: These should probably be True.
         self.assertFalse(m.visitdir(b'dir'))
         self.assertFalse(m.visitdir(b'dir/subdir'))
 
     def testVisitchildrensetRootfilesin(self):
         m = matchmod.match(b'x', b'', patterns=[b'rootfilesin:dir/subdir'])
         assert isinstance(m, matchmod.patternmatcher)
         self.assertEqual(m.visitchildrenset(b'.'), b'this')
         self.assertEqual(m.visitchildrenset(b'dir/subdir/x'), set())
         self.assertEqual(m.visitchildrenset(b'folder'), set())
         # FIXME: These should probably be {'subdir'} and 'this', respectively,
         # or at least 'this' and 'this'.
         self.assertEqual(m.visitchildrenset(b'dir'), set())
         self.assertEqual(m.visitchildrenset(b'dir/subdir'), set())
 
     def testVisitdirGlob(self):
         m = matchmod.match(b'x', b'', patterns=[b'glob:dir/z*'])
         assert isinstance(m, matchmod.patternmatcher)
         self.assertTrue(m.visitdir(b'.'))
         self.assertTrue(m.visitdir(b'dir'))
         self.assertFalse(m.visitdir(b'folder'))
         # OPT: these should probably be False.
         self.assertTrue(m.visitdir(b'dir/subdir'))
         self.assertTrue(m.visitdir(b'dir/subdir/x'))
 
     def testVisitchildrensetGlob(self):
         m = matchmod.match(b'x', b'', patterns=[b'glob:dir/z*'])
         assert isinstance(m, matchmod.patternmatcher)
         self.assertEqual(m.visitchildrenset(b'.'), b'this')
         self.assertEqual(m.visitchildrenset(b'folder'), set())
         self.assertEqual(m.visitchildrenset(b'dir'), b'this')
         # OPT: these should probably be set().
         self.assertEqual(m.visitchildrenset(b'dir/subdir'), b'this')
         self.assertEqual(m.visitchildrenset(b'dir/subdir/x'), b'this')
 
 class IncludeMatcherTests(unittest.TestCase):
 
     def testVisitdirPrefix(self):
         m = matchmod.match(b'x', b'', include=[b'path:dir/subdir'])
         assert isinstance(m, matchmod.includematcher)
         self.assertTrue(m.visitdir(b'.'))
         self.assertTrue(m.visitdir(b'dir'))
         self.assertEqual(m.visitdir(b'dir/subdir'), b'all')
         # OPT: This should probably be 'all' if its parent is?
         self.assertTrue(m.visitdir(b'dir/subdir/x'))
         self.assertFalse(m.visitdir(b'folder'))
 
     def testVisitchildrensetPrefix(self):
         m = matchmod.match(b'x', b'', include=[b'path:dir/subdir'])
         assert isinstance(m, matchmod.includematcher)
         self.assertEqual(m.visitchildrenset(b'.'), {b'dir'})
         self.assertEqual(m.visitchildrenset(b'dir'), {b'subdir'})
         self.assertEqual(m.visitchildrenset(b'dir/subdir'), b'all')
         # OPT: This should probably be 'all' if its parent is?
         self.assertEqual(m.visitchildrenset(b'dir/subdir/x'), b'this')
         self.assertEqual(m.visitchildrenset(b'folder'), set())
 
     def testVisitdirRootfilesin(self):
         m = matchmod.match(b'x', b'', include=[b'rootfilesin:dir/subdir'])
         assert isinstance(m, matchmod.includematcher)
         self.assertTrue(m.visitdir(b'.'))
         self.assertTrue(m.visitdir(b'dir'))
         self.assertTrue(m.visitdir(b'dir/subdir'))
         self.assertFalse(m.visitdir(b'dir/subdir/x'))
         self.assertFalse(m.visitdir(b'folder'))
 
     def testVisitchildrensetRootfilesin(self):
         m = matchmod.match(b'x', b'', include=[b'rootfilesin:dir/subdir'])
         assert isinstance(m, matchmod.includematcher)
         self.assertEqual(m.visitchildrenset(b'.'), {b'dir'})
         self.assertEqual(m.visitchildrenset(b'dir'), {b'subdir'})
         self.assertEqual(m.visitchildrenset(b'dir/subdir'), b'this')
         self.assertEqual(m.visitchildrenset(b'dir/subdir/x'), set())
         self.assertEqual(m.visitchildrenset(b'folder'), set())
 
     def testVisitdirGlob(self):
         m = matchmod.match(b'x', b'', include=[b'glob:dir/z*'])
         assert isinstance(m, matchmod.includematcher)
         self.assertTrue(m.visitdir(b'.'))
         self.assertTrue(m.visitdir(b'dir'))
         self.assertFalse(m.visitdir(b'folder'))
         # OPT: these should probably be False.
         self.assertTrue(m.visitdir(b'dir/subdir'))
         self.assertTrue(m.visitdir(b'dir/subdir/x'))
 
     def testVisitchildrensetGlob(self):
         m = matchmod.match(b'x', b'', include=[b'glob:dir/z*'])
         assert isinstance(m, matchmod.includematcher)
         self.assertEqual(m.visitchildrenset(b'.'), {b'dir'})
         self.assertEqual(m.visitchildrenset(b'folder'), set())
         self.assertEqual(m.visitchildrenset(b'dir'), b'this')
         # OPT: these should probably be set().
         self.assertEqual(m.visitchildrenset(b'dir/subdir'), b'this')
         self.assertEqual(m.visitchildrenset(b'dir/subdir/x'), b'this')
 
 class ExactMatcherTests(unittest.TestCase):
 
     def testVisitdir(self):
         m = matchmod.match(b'x', b'', patterns=[b'dir/subdir/foo.txt'],
                            exact=True)
         assert isinstance(m, matchmod.exactmatcher)
         self.assertTrue(m.visitdir(b'.'))
         self.assertTrue(m.visitdir(b'dir'))
         self.assertTrue(m.visitdir(b'dir/subdir'))
         self.assertFalse(m.visitdir(b'dir/subdir/foo.txt'))
         self.assertFalse(m.visitdir(b'dir/foo'))
         self.assertFalse(m.visitdir(b'dir/subdir/x'))
         self.assertFalse(m.visitdir(b'folder'))
 
     def testVisitchildrenset(self):
         m = matchmod.match(b'x', b'', patterns=[b'dir/subdir/foo.txt'],
                            exact=True)
         assert isinstance(m, matchmod.exactmatcher)
         self.assertEqual(m.visitchildrenset(b'.'), {b'dir'})
         self.assertEqual(m.visitchildrenset(b'dir'), {b'subdir'})
         self.assertEqual(m.visitchildrenset(b'dir/subdir'), {b'foo.txt'})
         self.assertEqual(m.visitchildrenset(b'dir/subdir/x'), set())
         self.assertEqual(m.visitchildrenset(b'dir/subdir/foo.txt'), set())
         self.assertEqual(m.visitchildrenset(b'folder'), set())
 
     def testVisitchildrensetFilesAndDirs(self):
         m = matchmod.match(b'x', b'', patterns=[b'rootfile.txt',
                                                 b'a/file1.txt',
                                                 b'a/b/file2.txt',
                                                 # no file in a/b/c
                                                 b'a/b/c/d/file4.txt'],
                            exact=True)
         assert isinstance(m, matchmod.exactmatcher)
         self.assertEqual(m.visitchildrenset(b'.'), {b'a', b'rootfile.txt'})
         self.assertEqual(m.visitchildrenset(b'a'), {b'b', b'file1.txt'})
         self.assertEqual(m.visitchildrenset(b'a/b'), {b'c', b'file2.txt'})
         self.assertEqual(m.visitchildrenset(b'a/b/c'), {b'd'})
         self.assertEqual(m.visitchildrenset(b'a/b/c/d'), {b'file4.txt'})
         self.assertEqual(m.visitchildrenset(b'a/b/c/d/e'), set())
         self.assertEqual(m.visitchildrenset(b'folder'), set())
 
 class DifferenceMatcherTests(unittest.TestCase):
 
     def testVisitdirM2always(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.alwaysmatcher(b'', b'')
         dm = matchmod.differencematcher(m1, m2)
         # dm should be equivalent to a nevermatcher.
         self.assertFalse(dm.visitdir(b'.'))
         self.assertFalse(dm.visitdir(b'dir'))
         self.assertFalse(dm.visitdir(b'dir/subdir'))
         self.assertFalse(dm.visitdir(b'dir/subdir/z'))
         self.assertFalse(dm.visitdir(b'dir/foo'))
         self.assertFalse(dm.visitdir(b'dir/subdir/x'))
         self.assertFalse(dm.visitdir(b'folder'))
 
     def testVisitchildrensetM2always(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.alwaysmatcher(b'', b'')
         dm = matchmod.differencematcher(m1, m2)
         # dm should be equivalent to a nevermatcher.
         self.assertEqual(dm.visitchildrenset(b'.'), set())
         self.assertEqual(dm.visitchildrenset(b'dir'), set())
         self.assertEqual(dm.visitchildrenset(b'dir/subdir'), set())
         self.assertEqual(dm.visitchildrenset(b'dir/subdir/z'), set())
         self.assertEqual(dm.visitchildrenset(b'dir/foo'), set())
         self.assertEqual(dm.visitchildrenset(b'dir/subdir/x'), set())
         self.assertEqual(dm.visitchildrenset(b'folder'), set())
 
     def testVisitdirM2never(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.nevermatcher(b'', b'')
         dm = matchmod.differencematcher(m1, m2)
         # dm should be equivalent to a alwaysmatcher.
         #
         # We're testing Equal-to-True instead of just 'assertTrue' since
         # assertTrue does NOT verify that it's a bool, just that it's truthy.
         # While we may want to eventually make these return 'all', they should
         # not currently do so.
-        self.assertEqual(dm.visitdir(b'.'), 'all')
-        self.assertEqual(dm.visitdir(b'dir'), 'all')
-        self.assertEqual(dm.visitdir(b'dir/subdir'), 'all')
-        self.assertEqual(dm.visitdir(b'dir/subdir/z'), 'all')
-        self.assertEqual(dm.visitdir(b'dir/foo'), 'all')
-        self.assertEqual(dm.visitdir(b'dir/subdir/x'), 'all')
-        self.assertEqual(dm.visitdir(b'folder'), 'all')
+        self.assertEqual(dm.visitdir(b'.'), b'all')
+        self.assertEqual(dm.visitdir(b'dir'), b'all')
+        self.assertEqual(dm.visitdir(b'dir/subdir'), b'all')
+        self.assertEqual(dm.visitdir(b'dir/subdir/z'), b'all')
+        self.assertEqual(dm.visitdir(b'dir/foo'), b'all')
+        self.assertEqual(dm.visitdir(b'dir/subdir/x'), b'all')
+        self.assertEqual(dm.visitdir(b'folder'), b'all')
 
     def testVisitchildrensetM2never(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.nevermatcher(b'', b'')
         dm = matchmod.differencematcher(m1, m2)
         # dm should be equivalent to a alwaysmatcher.
         self.assertEqual(dm.visitchildrenset(b'.'), b'all')
         self.assertEqual(dm.visitchildrenset(b'dir'), b'all')
         self.assertEqual(dm.visitchildrenset(b'dir/subdir'), b'all')
         self.assertEqual(dm.visitchildrenset(b'dir/subdir/z'), b'all')
         self.assertEqual(dm.visitchildrenset(b'dir/foo'), b'all')
         self.assertEqual(dm.visitchildrenset(b'dir/subdir/x'), b'all')
         self.assertEqual(dm.visitchildrenset(b'folder'), b'all')
 
     def testVisitdirM2SubdirPrefix(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.match(b'', b'', patterns=[b'path:dir/subdir'])
         dm = matchmod.differencematcher(m1, m2)
         self.assertEqual(dm.visitdir(b'.'), True)
         self.assertEqual(dm.visitdir(b'dir'), True)
         self.assertFalse(dm.visitdir(b'dir/subdir'))
         # OPT: We should probably return False for these; we don't because
         # patternmatcher.visitdir() (our m2) doesn't return 'all' for subdirs of
         # an 'all' pattern, just True.
         self.assertEqual(dm.visitdir(b'dir/subdir/z'), True)
         self.assertEqual(dm.visitdir(b'dir/subdir/x'), True)
-        self.assertEqual(dm.visitdir(b'dir/foo'), 'all')
-        self.assertEqual(dm.visitdir(b'folder'), 'all')
+        self.assertEqual(dm.visitdir(b'dir/foo'), b'all')
+        self.assertEqual(dm.visitdir(b'folder'), b'all')
 
     def testVisitchildrensetM2SubdirPrefix(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.match(b'', b'', patterns=[b'path:dir/subdir'])
         dm = matchmod.differencematcher(m1, m2)
         self.assertEqual(dm.visitchildrenset(b'.'), b'this')
         self.assertEqual(dm.visitchildrenset(b'dir'), b'this')
         self.assertEqual(dm.visitchildrenset(b'dir/subdir'), set())
         self.assertEqual(dm.visitchildrenset(b'dir/foo'), b'all')
         self.assertEqual(dm.visitchildrenset(b'folder'), b'all')
         # OPT: We should probably return set() for these; we don't because
         # patternmatcher.visitdir() (our m2) doesn't return 'all' for subdirs of
         # an 'all' pattern, just 'this'.
         self.assertEqual(dm.visitchildrenset(b'dir/subdir/z'), b'this')
         self.assertEqual(dm.visitchildrenset(b'dir/subdir/x'), b'this')
 
     # We're using includematcher instead of patterns because it behaves slightly
     # better (giving narrower results) than patternmatcher.
     def testVisitdirIncludeIncludfe(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         m2 = matchmod.match(b'', b'', include=[b'rootfilesin:dir'])
         dm = matchmod.differencematcher(m1, m2)
         self.assertEqual(dm.visitdir(b'.'), True)
         self.assertEqual(dm.visitdir(b'dir'), True)
-        self.assertEqual(dm.visitdir(b'dir/subdir'), 'all')
+        self.assertEqual(dm.visitdir(b'dir/subdir'), b'all')
         self.assertFalse(dm.visitdir(b'dir/foo'))
         self.assertFalse(dm.visitdir(b'folder'))
         # OPT: We should probably return False for these; we don't because
         # patternmatcher.visitdir() (our m2) doesn't return 'all' for subdirs of
         # an 'all' pattern, just True.
         self.assertEqual(dm.visitdir(b'dir/subdir/z'), True)
         self.assertEqual(dm.visitdir(b'dir/subdir/x'), True)
 
     def testVisitchildrensetIncludeInclude(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         m2 = matchmod.match(b'', b'', include=[b'rootfilesin:dir'])
         dm = matchmod.differencematcher(m1, m2)
         self.assertEqual(dm.visitchildrenset(b'.'), {b'dir'})
         self.assertEqual(dm.visitchildrenset(b'dir'), {b'subdir'})
         self.assertEqual(dm.visitchildrenset(b'dir/subdir'), b'all')
         self.assertEqual(dm.visitchildrenset(b'dir/foo'), set())
         self.assertEqual(dm.visitchildrenset(b'folder'), set())
         # OPT: We should probably return set() for these; we don't because
         # patternmatcher.visitdir() (our m2) doesn't return 'all' for subdirs of
         # an 'all' pattern, just 'this'.
         self.assertEqual(dm.visitchildrenset(b'dir/subdir/z'), b'this')
         self.assertEqual(dm.visitchildrenset(b'dir/subdir/x'), b'this')
 
 class IntersectionMatcherTests(unittest.TestCase):
 
     def testVisitdirM2always(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.alwaysmatcher(b'', b'')
         im = matchmod.intersectmatchers(m1, m2)
         # im should be equivalent to a alwaysmatcher.
         self.assertEqual(im.visitdir(b'.'), b'all')
         self.assertEqual(im.visitdir(b'dir'), b'all')
         self.assertEqual(im.visitdir(b'dir/subdir'), b'all')
         self.assertEqual(im.visitdir(b'dir/subdir/z'), b'all')
         self.assertEqual(im.visitdir(b'dir/foo'), b'all')
         self.assertEqual(im.visitdir(b'dir/subdir/x'), b'all')
         self.assertEqual(im.visitdir(b'folder'), b'all')
 
     def testVisitchildrensetM2always(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.alwaysmatcher(b'', b'')
         im = matchmod.intersectmatchers(m1, m2)
         # im should be equivalent to a alwaysmatcher.
         self.assertEqual(im.visitchildrenset(b'.'), b'all')
         self.assertEqual(im.visitchildrenset(b'dir'), b'all')
         self.assertEqual(im.visitchildrenset(b'dir/subdir'), b'all')
         self.assertEqual(im.visitchildrenset(b'dir/subdir/z'), b'all')
         self.assertEqual(im.visitchildrenset(b'dir/foo'), b'all')
         self.assertEqual(im.visitchildrenset(b'dir/subdir/x'), b'all')
         self.assertEqual(im.visitchildrenset(b'folder'), b'all')
 
     def testVisitdirM2never(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.nevermatcher(b'', b'')
         im = matchmod.intersectmatchers(m1, m2)
         # im should be equivalent to a nevermatcher.
         self.assertFalse(im.visitdir(b'.'))
         self.assertFalse(im.visitdir(b'dir'))
         self.assertFalse(im.visitdir(b'dir/subdir'))
         self.assertFalse(im.visitdir(b'dir/subdir/z'))
         self.assertFalse(im.visitdir(b'dir/foo'))
         self.assertFalse(im.visitdir(b'dir/subdir/x'))
         self.assertFalse(im.visitdir(b'folder'))
 
     def testVisitchildrensetM2never(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.nevermatcher(b'', b'')
         im = matchmod.intersectmatchers(m1, m2)
         # im should be equivalent to a nevermqtcher.
         self.assertEqual(im.visitchildrenset(b'.'), set())
         self.assertEqual(im.visitchildrenset(b'dir'), set())
         self.assertEqual(im.visitchildrenset(b'dir/subdir'), set())
         self.assertEqual(im.visitchildrenset(b'dir/subdir/z'), set())
         self.assertEqual(im.visitchildrenset(b'dir/foo'), set())
         self.assertEqual(im.visitchildrenset(b'dir/subdir/x'), set())
         self.assertEqual(im.visitchildrenset(b'folder'), set())
 
     def testVisitdirM2SubdirPrefix(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.match(b'', b'', patterns=[b'path:dir/subdir'])
         im = matchmod.intersectmatchers(m1, m2)
         self.assertEqual(im.visitdir(b'.'), True)
         self.assertEqual(im.visitdir(b'dir'), True)
         self.assertEqual(im.visitdir(b'dir/subdir'), b'all')
         self.assertFalse(im.visitdir(b'dir/foo'))
         self.assertFalse(im.visitdir(b'folder'))
         # OPT: We should probably return 'all' for these; we don't because
         # patternmatcher.visitdir() (our m2) doesn't return 'all' for subdirs of
         # an 'all' pattern, just True.
         self.assertEqual(im.visitdir(b'dir/subdir/z'), True)
         self.assertEqual(im.visitdir(b'dir/subdir/x'), True)
 
     def testVisitchildrensetM2SubdirPrefix(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         im = matchmod.intersectmatchers(m1, m2)
         self.assertEqual(im.visitchildrenset(b'.'), {b'dir'})
         self.assertEqual(im.visitchildrenset(b'dir'), {b'subdir'})
         self.assertEqual(im.visitchildrenset(b'dir/subdir'), b'all')
         self.assertEqual(im.visitchildrenset(b'dir/foo'), set())
         self.assertEqual(im.visitchildrenset(b'folder'), set())
         # OPT: We should probably return 'all' for these
         self.assertEqual(im.visitchildrenset(b'dir/subdir/z'), b'this')
         self.assertEqual(im.visitchildrenset(b'dir/subdir/x'), b'this')
 
     # We're using includematcher instead of patterns because it behaves slightly
     # better (giving narrower results) than patternmatcher.
     def testVisitdirIncludeIncludfe(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         m2 = matchmod.match(b'', b'', include=[b'rootfilesin:dir'])
         im = matchmod.intersectmatchers(m1, m2)
         self.assertEqual(im.visitdir(b'.'), True)
         self.assertEqual(im.visitdir(b'dir'), True)
         self.assertFalse(im.visitdir(b'dir/subdir'))
         self.assertFalse(im.visitdir(b'dir/foo'))
         self.assertFalse(im.visitdir(b'folder'))
         self.assertFalse(im.visitdir(b'dir/subdir/z'))
         self.assertFalse(im.visitdir(b'dir/subdir/x'))
 
     def testVisitchildrensetIncludeInclude(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         m2 = matchmod.match(b'', b'', include=[b'rootfilesin:dir'])
         im = matchmod.intersectmatchers(m1, m2)
         self.assertEqual(im.visitchildrenset(b'.'), {b'dir'})
         self.assertEqual(im.visitchildrenset(b'dir'), b'this')
         self.assertEqual(im.visitchildrenset(b'dir/subdir'), set())
         self.assertEqual(im.visitchildrenset(b'dir/foo'), set())
         self.assertEqual(im.visitchildrenset(b'folder'), set())
         self.assertEqual(im.visitchildrenset(b'dir/subdir/z'), set())
         self.assertEqual(im.visitchildrenset(b'dir/subdir/x'), set())
 
     # We're using includematcher instead of patterns because it behaves slightly
     # better (giving narrower results) than patternmatcher.
     def testVisitdirIncludeInclude2(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         m2 = matchmod.match(b'', b'', include=[b'path:folder'])
         im = matchmod.intersectmatchers(m1, m2)
         # FIXME: is True correct here?
         self.assertEqual(im.visitdir(b'.'), True)
         self.assertFalse(im.visitdir(b'dir'))
         self.assertFalse(im.visitdir(b'dir/subdir'))
         self.assertFalse(im.visitdir(b'dir/foo'))
         self.assertFalse(im.visitdir(b'folder'))
         self.assertFalse(im.visitdir(b'dir/subdir/z'))
         self.assertFalse(im.visitdir(b'dir/subdir/x'))
 
     def testVisitchildrensetIncludeInclude2(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         m2 = matchmod.match(b'', b'', include=[b'path:folder'])
         im = matchmod.intersectmatchers(m1, m2)
         # FIXME: is set() correct here?
         self.assertEqual(im.visitchildrenset(b'.'), set())
         self.assertEqual(im.visitchildrenset(b'dir'), set())
         self.assertEqual(im.visitchildrenset(b'dir/subdir'), set())
         self.assertEqual(im.visitchildrenset(b'dir/foo'), set())
         self.assertEqual(im.visitchildrenset(b'folder'), set())
         self.assertEqual(im.visitchildrenset(b'dir/subdir/z'), set())
         self.assertEqual(im.visitchildrenset(b'dir/subdir/x'), set())
 
     # We're using includematcher instead of patterns because it behaves slightly
     # better (giving narrower results) than patternmatcher.
     def testVisitdirIncludeInclude3(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir/x'])
         m2 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         im = matchmod.intersectmatchers(m1, m2)
         self.assertEqual(im.visitdir(b'.'), True)
         self.assertEqual(im.visitdir(b'dir'), True)
         self.assertEqual(im.visitdir(b'dir/subdir'), True)
         self.assertFalse(im.visitdir(b'dir/foo'))
         self.assertFalse(im.visitdir(b'folder'))
         self.assertFalse(im.visitdir(b'dir/subdir/z'))
         # OPT: this should probably be 'all' not True.
         self.assertEqual(im.visitdir(b'dir/subdir/x'), True)
 
     def testVisitchildrensetIncludeInclude3(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir/x'])
         m2 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         im = matchmod.intersectmatchers(m1, m2)
         self.assertEqual(im.visitchildrenset(b'.'), {b'dir'})
         self.assertEqual(im.visitchildrenset(b'dir'), {b'subdir'})
         self.assertEqual(im.visitchildrenset(b'dir/subdir'), {b'x'})
         self.assertEqual(im.visitchildrenset(b'dir/foo'), set())
         self.assertEqual(im.visitchildrenset(b'folder'), set())
         self.assertEqual(im.visitchildrenset(b'dir/subdir/z'), set())
         # OPT: this should probably be 'all' not 'this'.
         self.assertEqual(im.visitchildrenset(b'dir/subdir/x'), b'this')
 
     # We're using includematcher instead of patterns because it behaves slightly
     # better (giving narrower results) than patternmatcher.
     def testVisitdirIncludeInclude4(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir/x'])
         m2 = matchmod.match(b'', b'', include=[b'path:dir/subdir/z'])
         im = matchmod.intersectmatchers(m1, m2)
         # OPT: these next three could probably be False as well.
         self.assertEqual(im.visitdir(b'.'), True)
         self.assertEqual(im.visitdir(b'dir'), True)
         self.assertEqual(im.visitdir(b'dir/subdir'), True)
         self.assertFalse(im.visitdir(b'dir/foo'))
         self.assertFalse(im.visitdir(b'folder'))
         self.assertFalse(im.visitdir(b'dir/subdir/z'))
         self.assertFalse(im.visitdir(b'dir/subdir/x'))
 
     def testVisitchildrensetIncludeInclude4(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir/x'])
         m2 = matchmod.match(b'', b'', include=[b'path:dir/subdir/z'])
         im = matchmod.intersectmatchers(m1, m2)
         # OPT: these next two could probably be set() as well.
         self.assertEqual(im.visitchildrenset(b'.'), {b'dir'})
         self.assertEqual(im.visitchildrenset(b'dir'), {b'subdir'})
         self.assertEqual(im.visitchildrenset(b'dir/subdir'), set())
         self.assertEqual(im.visitchildrenset(b'dir/foo'), set())
         self.assertEqual(im.visitchildrenset(b'folder'), set())
         self.assertEqual(im.visitchildrenset(b'dir/subdir/z'), set())
         self.assertEqual(im.visitchildrenset(b'dir/subdir/x'), set())
 
 class UnionMatcherTests(unittest.TestCase):
 
     def testVisitdirM2always(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.alwaysmatcher(b'', b'')
         um = matchmod.unionmatcher([m1, m2])
         # um should be equivalent to a alwaysmatcher.
         self.assertEqual(um.visitdir(b'.'), b'all')
         self.assertEqual(um.visitdir(b'dir'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir/z'), b'all')
         self.assertEqual(um.visitdir(b'dir/foo'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir/x'), b'all')
         self.assertEqual(um.visitdir(b'folder'), b'all')
 
     def testVisitchildrensetM2always(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.alwaysmatcher(b'', b'')
         um = matchmod.unionmatcher([m1, m2])
         # um should be equivalent to a alwaysmatcher.
         self.assertEqual(um.visitchildrenset(b'.'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir/z'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/foo'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir/x'), b'all')
         self.assertEqual(um.visitchildrenset(b'folder'), b'all')
 
     def testVisitdirM1never(self):
         m1 = matchmod.nevermatcher(b'', b'')
         m2 = matchmod.alwaysmatcher(b'', b'')
         um = matchmod.unionmatcher([m1, m2])
         # um should be equivalent to a alwaysmatcher.
         self.assertEqual(um.visitdir(b'.'), b'all')
         self.assertEqual(um.visitdir(b'dir'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir/z'), b'all')
         self.assertEqual(um.visitdir(b'dir/foo'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir/x'), b'all')
         self.assertEqual(um.visitdir(b'folder'), b'all')
 
     def testVisitchildrensetM1never(self):
         m1 = matchmod.nevermatcher(b'', b'')
         m2 = matchmod.alwaysmatcher(b'', b'')
         um = matchmod.unionmatcher([m1, m2])
         # um should be equivalent to a alwaysmatcher.
         self.assertEqual(um.visitchildrenset(b'.'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir/z'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/foo'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir/x'), b'all')
         self.assertEqual(um.visitchildrenset(b'folder'), b'all')
 
     def testVisitdirM2never(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.nevermatcher(b'', b'')
         um = matchmod.unionmatcher([m1, m2])
         # um should be equivalent to a alwaysmatcher.
         self.assertEqual(um.visitdir(b'.'), b'all')
         self.assertEqual(um.visitdir(b'dir'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir/z'), b'all')
         self.assertEqual(um.visitdir(b'dir/foo'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir/x'), b'all')
         self.assertEqual(um.visitdir(b'folder'), b'all')
 
     def testVisitchildrensetM2never(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.nevermatcher(b'', b'')
         um = matchmod.unionmatcher([m1, m2])
         # um should be equivalent to a alwaysmatcher.
         self.assertEqual(um.visitchildrenset(b'.'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir/z'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/foo'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir/x'), b'all')
         self.assertEqual(um.visitchildrenset(b'folder'), b'all')
 
     def testVisitdirM2SubdirPrefix(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.match(b'', b'', patterns=[b'path:dir/subdir'])
         um = matchmod.unionmatcher([m1, m2])
         self.assertEqual(um.visitdir(b'.'), b'all')
         self.assertEqual(um.visitdir(b'dir'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir'), b'all')
         self.assertEqual(um.visitdir(b'dir/foo'), b'all')
         self.assertEqual(um.visitdir(b'folder'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir/z'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir/x'), b'all')
 
     def testVisitchildrensetM2SubdirPrefix(self):
         m1 = matchmod.alwaysmatcher(b'', b'')
         m2 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         um = matchmod.unionmatcher([m1, m2])
         self.assertEqual(um.visitchildrenset(b'.'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/foo'), b'all')
         self.assertEqual(um.visitchildrenset(b'folder'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir/z'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir/x'), b'all')
 
     # We're using includematcher instead of patterns because it behaves slightly
     # better (giving narrower results) than patternmatcher.
     def testVisitdirIncludeIncludfe(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         m2 = matchmod.match(b'', b'', include=[b'rootfilesin:dir'])
         um = matchmod.unionmatcher([m1, m2])
         self.assertEqual(um.visitdir(b'.'), True)
         self.assertEqual(um.visitdir(b'dir'), True)
         self.assertEqual(um.visitdir(b'dir/subdir'), b'all')
         self.assertFalse(um.visitdir(b'dir/foo'))
         self.assertFalse(um.visitdir(b'folder'))
         # OPT: These two should probably be 'all' not True.
         self.assertEqual(um.visitdir(b'dir/subdir/z'), True)
         self.assertEqual(um.visitdir(b'dir/subdir/x'), True)
 
     def testVisitchildrensetIncludeInclude(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         m2 = matchmod.match(b'', b'', include=[b'rootfilesin:dir'])
         um = matchmod.unionmatcher([m1, m2])
         self.assertEqual(um.visitchildrenset(b'.'), {b'dir'})
         self.assertEqual(um.visitchildrenset(b'dir'), b'this')
         self.assertEqual(um.visitchildrenset(b'dir/subdir'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/foo'), set())
         self.assertEqual(um.visitchildrenset(b'folder'), set())
         # OPT: These next two could be 'all' instead of 'this'.
         self.assertEqual(um.visitchildrenset(b'dir/subdir/z'), b'this')
         self.assertEqual(um.visitchildrenset(b'dir/subdir/x'), b'this')
 
     # We're using includematcher instead of patterns because it behaves slightly
     # better (giving narrower results) than patternmatcher.
     def testVisitdirIncludeInclude2(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         m2 = matchmod.match(b'', b'', include=[b'path:folder'])
         um = matchmod.unionmatcher([m1, m2])
         self.assertEqual(um.visitdir(b'.'), True)
         self.assertEqual(um.visitdir(b'dir'), True)
         self.assertEqual(um.visitdir(b'dir/subdir'), b'all')
         self.assertFalse(um.visitdir(b'dir/foo'))
         self.assertEqual(um.visitdir(b'folder'), b'all')
         # OPT: These should probably be 'all' not True.
         self.assertEqual(um.visitdir(b'dir/subdir/z'), True)
         self.assertEqual(um.visitdir(b'dir/subdir/x'), True)
 
     def testVisitchildrensetIncludeInclude2(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         m2 = matchmod.match(b'', b'', include=[b'path:folder'])
         um = matchmod.unionmatcher([m1, m2])
         self.assertEqual(um.visitchildrenset(b'.'), {b'folder', b'dir'})
         self.assertEqual(um.visitchildrenset(b'dir'), {b'subdir'})
         self.assertEqual(um.visitchildrenset(b'dir/subdir'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/foo'), set())
         self.assertEqual(um.visitchildrenset(b'folder'), b'all')
         # OPT: These next two could be 'all' instead of 'this'.
         self.assertEqual(um.visitchildrenset(b'dir/subdir/z'), b'this')
         self.assertEqual(um.visitchildrenset(b'dir/subdir/x'), b'this')
 
     # We're using includematcher instead of patterns because it behaves slightly
     # better (giving narrower results) than patternmatcher.
     def testVisitdirIncludeInclude3(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir/x'])
         m2 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         um = matchmod.unionmatcher([m1, m2])
         self.assertEqual(um.visitdir(b'.'), True)
         self.assertEqual(um.visitdir(b'dir'), True)
         self.assertEqual(um.visitdir(b'dir/subdir'), b'all')
         self.assertFalse(um.visitdir(b'dir/foo'))
         self.assertFalse(um.visitdir(b'folder'))
         self.assertEqual(um.visitdir(b'dir/subdir/x'), b'all')
         # OPT: this should probably be 'all' not True.
         self.assertEqual(um.visitdir(b'dir/subdir/z'), True)
 
     def testVisitchildrensetIncludeInclude3(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir/x'])
         m2 = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         um = matchmod.unionmatcher([m1, m2])
         self.assertEqual(um.visitchildrenset(b'.'), {b'dir'})
         self.assertEqual(um.visitchildrenset(b'dir'), {b'subdir'})
         self.assertEqual(um.visitchildrenset(b'dir/subdir'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/foo'), set())
         self.assertEqual(um.visitchildrenset(b'folder'), set())
         self.assertEqual(um.visitchildrenset(b'dir/subdir/x'), b'all')
         # OPT: this should probably be 'all' not 'this'.
         self.assertEqual(um.visitchildrenset(b'dir/subdir/z'), b'this')
 
     # We're using includematcher instead of patterns because it behaves slightly
     # better (giving narrower results) than patternmatcher.
     def testVisitdirIncludeInclude4(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir/x'])
         m2 = matchmod.match(b'', b'', include=[b'path:dir/subdir/z'])
         um = matchmod.unionmatcher([m1, m2])
         # OPT: these next three could probably be False as well.
         self.assertEqual(um.visitdir(b'.'), True)
         self.assertEqual(um.visitdir(b'dir'), True)
         self.assertEqual(um.visitdir(b'dir/subdir'), True)
         self.assertFalse(um.visitdir(b'dir/foo'))
         self.assertFalse(um.visitdir(b'folder'))
         self.assertEqual(um.visitdir(b'dir/subdir/z'), b'all')
         self.assertEqual(um.visitdir(b'dir/subdir/x'), b'all')
 
     def testVisitchildrensetIncludeInclude4(self):
         m1 = matchmod.match(b'', b'', include=[b'path:dir/subdir/x'])
         m2 = matchmod.match(b'', b'', include=[b'path:dir/subdir/z'])
         um = matchmod.unionmatcher([m1, m2])
         self.assertEqual(um.visitchildrenset(b'.'), {b'dir'})
         self.assertEqual(um.visitchildrenset(b'dir'), {b'subdir'})
         self.assertEqual(um.visitchildrenset(b'dir/subdir'), {b'x', b'z'})
         self.assertEqual(um.visitchildrenset(b'dir/foo'), set())
         self.assertEqual(um.visitchildrenset(b'folder'), set())
         self.assertEqual(um.visitchildrenset(b'dir/subdir/z'), b'all')
         self.assertEqual(um.visitchildrenset(b'dir/subdir/x'), b'all')
 
 class SubdirMatcherTests(unittest.TestCase):
 
     def testVisitdir(self):
         m = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         sm = matchmod.subdirmatcher(b'dir', m)
 
         self.assertEqual(sm.visitdir(b'.'), True)
         self.assertEqual(sm.visitdir(b'subdir'), b'all')
         # OPT: These next two should probably be 'all' not True.
         self.assertEqual(sm.visitdir(b'subdir/x'), True)
         self.assertEqual(sm.visitdir(b'subdir/z'), True)
         self.assertFalse(sm.visitdir(b'foo'))
 
     def testVisitchildrenset(self):
         m = matchmod.match(b'', b'', include=[b'path:dir/subdir'])
         sm = matchmod.subdirmatcher(b'dir', m)
 
         self.assertEqual(sm.visitchildrenset(b'.'), {b'subdir'})
         self.assertEqual(sm.visitchildrenset(b'subdir'), b'all')
         # OPT: These next two should probably be 'all' not 'this'.
         self.assertEqual(sm.visitchildrenset(b'subdir/x'), b'this')
         self.assertEqual(sm.visitchildrenset(b'subdir/z'), b'this')
         self.assertEqual(sm.visitchildrenset(b'foo'), set())
 
 class PrefixdirMatcherTests(unittest.TestCase):
 
     def testVisitdir(self):
         m = matchmod.match(util.localpath(b'root/d'), b'e/f',
                 [b'../a.txt', b'b.txt'])
         pm = matchmod.prefixdirmatcher(b'root', b'd/e/f', b'd', m)
 
         # `m` elides 'd' because it's part of the root, and the rest of the
         # patterns are relative.
         self.assertEqual(bool(m(b'a.txt')), False)
         self.assertEqual(bool(m(b'b.txt')), False)
         self.assertEqual(bool(m(b'e/a.txt')), True)
         self.assertEqual(bool(m(b'e/b.txt')), False)
         self.assertEqual(bool(m(b'e/f/b.txt')), True)
 
         # The prefix matcher re-adds 'd' to the paths, so they need to be
         # specified when using the prefixdirmatcher.
         self.assertEqual(bool(pm(b'a.txt')), False)
         self.assertEqual(bool(pm(b'b.txt')), False)
         self.assertEqual(bool(pm(b'd/e/a.txt')), True)
         self.assertEqual(bool(pm(b'd/e/b.txt')), False)
         self.assertEqual(bool(pm(b'd/e/f/b.txt')), True)
 
         self.assertEqual(m.visitdir(b'.'), True)
         self.assertEqual(m.visitdir(b'e'), True)
         self.assertEqual(m.visitdir(b'e/f'), True)
         self.assertEqual(m.visitdir(b'e/f/g'), False)
 
         self.assertEqual(pm.visitdir(b'.'), True)
         self.assertEqual(pm.visitdir(b'd'), True)
         self.assertEqual(pm.visitdir(b'd/e'), True)
         self.assertEqual(pm.visitdir(b'd/e/f'), True)
         self.assertEqual(pm.visitdir(b'd/e/f/g'), False)
 
     def testVisitchildrenset(self):
         m = matchmod.match(util.localpath(b'root/d'), b'e/f',
                 [b'../a.txt', b'b.txt'])
         pm = matchmod.prefixdirmatcher(b'root', b'd/e/f', b'd', m)
 
         # OPT: visitchildrenset could possibly return {'e'} and {'f'} for these
         # next two, respectively; patternmatcher does not have this
         # optimization.
         self.assertEqual(m.visitchildrenset(b'.'), b'this')
         self.assertEqual(m.visitchildrenset(b'e'), b'this')
         self.assertEqual(m.visitchildrenset(b'e/f'), b'this')
         self.assertEqual(m.visitchildrenset(b'e/f/g'), set())
 
         # OPT: visitchildrenset could possibly return {'d'}, {'e'}, and {'f'}
         # for these next three, respectively; patternmatcher does not have this
         # optimization.
         self.assertEqual(pm.visitchildrenset(b'.'), b'this')
         self.assertEqual(pm.visitchildrenset(b'd'), b'this')
         self.assertEqual(pm.visitchildrenset(b'd/e'), b'this')
         self.assertEqual(pm.visitchildrenset(b'd/e/f'), b'this')
         self.assertEqual(pm.visitchildrenset(b'd/e/f/g'), set())
 
 if __name__ == '__main__':
     silenttestrunner.main(__name__)