view tests/test-match.py @ 44763:94f4f2ec7dee stable

packaging: support building Inno installer with PyOxidizer

We want to start distributing Mercurial on Python 3 on
Windows. PyOxidizer will be our vehicle for achieving that.

This commit implements basic support for producing Inno
installers using PyOxidizer.

While it is an eventual goal of PyOxidizer to produce
installers, those features aren't yet implemented. So our
strategy for producing Mercurial installers is similar to
what we've been doing with py2exe: invoke a build system to
produce files then stage those files into a directory so they
can be turned into an installer.

We had to make significant alterations to the pyoxidizer.bzl
config file to get it to produce the files that we desire for
a Windows install. This meant differentiating the build targets
so we can target Windows specifically.

We've added a new module to hgpackaging to deal with interacting
with PyOxidizer. It is similar to pyexe: we invoke a build process
then copy files to a staging directory. Ideally these extra
files would be defined in pyoxidizer.bzl. But I don't think it
is worth doing at this time, as PyOxidizer's config files are
lacking some features to make this turnkey.

The rest of the change is introducing a variant of the
Inno installer code that invokes PyOxidizer instead of
py2exe.

Comparing the Python 2.7 based Inno installers with this
one, the following changes were observed:

* No lib/*.{pyd, dll} files
* No Microsoft.VC90.CRT.manifest
* No msvc{m,p,r}90.dll files
* python27.dll replaced with python37.dll
* Add vcruntime140.dll file

The disappearance of the .pyd and .dll files is acceptable, as
PyOxidizer has embedded these in hg.exe and loads them from
memory.

The disappearance of the *90* files is acceptable because those
provide the Visual C++ 9 runtime, as required by Python 2.7.
Similarly, the appearance of vcruntime140.dll is a requirement
of Python 3.7.

Differential Revision: https://phab.mercurial-scm.org/D8473

from __future__ import absolute_import

import unittest

import silenttestrunner

from mercurial import (
    match as matchmod,
    util,
)


noop_auditor = lambda name: None


class BaseMatcherTests(unittest.TestCase):
    def testVisitdir(self):
        m = matchmod.basematcher()
        self.assertTrue(m.visitdir(b''))
        self.assertTrue(m.visitdir(b'dir'))

    def testVisitchildrenset(self):
        m = matchmod.basematcher()
        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()
        self.assertEqual(m.visitdir(b''), b'all')
        self.assertEqual(m.visitdir(b'dir'), b'all')

    def testVisitchildrenset(self):
        m = matchmod.alwaysmatcher()
        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()
        self.assertFalse(m.visitdir(b''))
        self.assertFalse(m.visitdir(b'dir'))

    def testVisitchildrenset(self):
        m = matchmod.nevermatcher()
        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(lambda *a: False)
        self.assertTrue(m.visitdir(b''))
        self.assertTrue(m.visitdir(b'dir'))

    def testVisitchildrenset(self):
        m = matchmod.predicatematcher(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(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', patterns=[b'rootfilesin:dir/subdir'],
        )
        assert isinstance(m, matchmod.patternmatcher)
        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''))
        self.assertFalse(m.visitdir(b'dir'))
        self.assertFalse(m.visitdir(b'dir/subdir'))

    def testVisitchildrensetRootfilesin(self):
        m = matchmod.match(
            util.localpath(b'/repo'), b'', patterns=[b'rootfilesin:dir/subdir'],
        )
        assert isinstance(m, matchmod.patternmatcher)
        self.assertEqual(m.visitchildrenset(b'dir/subdir/x'), set())
        self.assertEqual(m.visitchildrenset(b'folder'), set())
        # FIXME: These should probably be {'dir'}, {'subdir'} and 'this',
        # respectively, or at least 'this' for all three.
        self.assertEqual(m.visitchildrenset(b''), set())
        self.assertEqual(m.visitchildrenset(b'dir'), set())
        self.assertEqual(m.visitchildrenset(b'dir/subdir'), set())

    def testVisitdirGlob(self):
        m = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), 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.exact(files=[b'dir/subdir/foo.txt'])
        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.exact(files=[b'dir/subdir/foo.txt'])
        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.exact(
            files=[
                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',
            ]
        )
        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()
        m2 = matchmod.alwaysmatcher()
        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()
        m2 = matchmod.alwaysmatcher()
        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()
        m2 = matchmod.nevermatcher()
        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''), 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()
        m2 = matchmod.nevermatcher()
        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()
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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'), b'all')
        self.assertEqual(dm.visitdir(b'folder'), b'all')

    def testVisitchildrensetM2SubdirPrefix(self):
        m1 = matchmod.alwaysmatcher()
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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 testVisitdirIncludeInclude(self):
        m1 = matchmod.match(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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()
        m2 = matchmod.alwaysmatcher()
        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()
        m2 = matchmod.alwaysmatcher()
        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()
        m2 = matchmod.nevermatcher()
        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()
        m2 = matchmod.nevermatcher()
        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()
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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()
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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 testVisitdirIncludeInclude(self):
        m1 = matchmod.match(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir/x']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir/x']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir/x']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir/x']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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()
        m2 = matchmod.alwaysmatcher()
        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()
        m2 = matchmod.alwaysmatcher()
        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()
        m2 = matchmod.alwaysmatcher()
        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()
        m2 = matchmod.alwaysmatcher()
        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()
        m2 = matchmod.nevermatcher()
        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()
        m2 = matchmod.nevermatcher()
        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()
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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()
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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 testVisitdirIncludeInclude(self):
        m1 = matchmod.match(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir/x']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir/x']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir/x']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), b'', include=[b'path:dir/subdir/x']
        )
        m2 = matchmod.match(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), 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(
            util.localpath(b'/repo'), 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'],
            auditor=noop_auditor,
        )
        pm = matchmod.prefixdirmatcher(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'],
            auditor=noop_auditor,
        )
        pm = matchmod.prefixdirmatcher(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__)