view tests/test-walk.t @ 39772:ae531f5e583c

testing: add interface unit tests for file storage

Our strategy for supporting alternate storage backends is to define
interfaces for everything then "code to the interface."

We already have interfaces for various primitives, including file
and manifest storage.

What we don't have is generic unit tests for those interfaces. Up
to this point we've been relying on high-level integration tests
(mainly in the form of existing .t tests) to test alternate storage
backends. And my experience with developing the "simple store" test
extension is that such testing is very tedious: it takes several
minutes to run all tests and when you find a failure, it is often
non-trivial to debug.

This commit starts to change that.

This commit introduces the mercurial.testing.storage module. It
contains testing code for storage. Currently, it defines some
unittest.TestCase classes for testing the file storage interfaces.
It also defines some factory functions that allow a caller to easily
spawn a custom TestCase "bound" to a specific file storage backend
implementation.

A new .py test has been added. It simply defines a callable to produce
filelog and transaction instances on demand and then "registers" the
various test classes so the filelog class can be tested with the
storage interface unit tests.

As part of writing the tests, I identified a couple of apparent
bugs in revlog.py and filelog.py! These are tracked with inline
TODO comments.

Writing the tests makes it more obvious where the storage interface
is lacking. For example, we raise either IndexError or
error.LookupError for missing revisions depending on whether we
use an integer revision or a node. Also, we raise error.RevlogError
in various places when we should be raising a storage-agnostic
error type.

The storage interfaces are currently far from perfect and there is much
work to be done to improve them. But at least with this commit we
finally have the start of unit tests that can be used to "qualify"
the behavior of a storage backend. And when implementing and debugging
new storage backends, we now have an obvious place to define new
tests and have obvious places to insert breakpoints to facilitate
debugging. This should be invaluable when implementing new storage
backends.

I added the mercurial.testing package because these interface
conformance tests are generic and need to be usable by all storage
backends. Having the code live in tests/ would make it difficult for
storage backends implemented in extensions to test their interface
conformance. First, it would require obtaining a copy of Mercurial's
storage test code in order to test. Second, it would make testing
against multiple Mercurial versions difficult, as you would need to
import N copies of the storage testing code in order to achieve test
coverage. By making the test code part of the Mercurial distribution
itself, extensions can `import mercurial.testing.*` to access and run
the test code. The test will run against whatever Mercurial version
is active.

FWIW I've always wanted to move parts of run-tests.py into the
mercurial.* package to make the testing story simpler (e.g. imagine an
`hg debugruntests` command that could invoke the test harness). While I
have no plans to do that in the near future, establishing the
mercurial.testing package does provide a natural home for that code
should someone do this in the future.

Differential Revision: https://phab.mercurial-scm.org/D4650

  $ hg init t
  $ cd t
  $ mkdir -p beans
  $ for b in kidney navy turtle borlotti black pinto; do
  >     echo $b > beans/$b
  > done
  $ mkdir -p mammals/Procyonidae
  $ for m in cacomistle coatimundi raccoon; do
  >     echo $m > mammals/Procyonidae/$m
  > done
  $ echo skunk > mammals/skunk
  $ echo fennel > fennel
  $ echo fenugreek > fenugreek
  $ echo fiddlehead > fiddlehead
  $ hg addremove
  adding beans/black
  adding beans/borlotti
  adding beans/kidney
  adding beans/navy
  adding beans/pinto
  adding beans/turtle
  adding fennel
  adding fenugreek
  adding fiddlehead
  adding mammals/Procyonidae/cacomistle
  adding mammals/Procyonidae/coatimundi
  adding mammals/Procyonidae/raccoon
  adding mammals/skunk
  $ hg commit -m "commit #0"

  $ hg debugwalk -v
  * matcher:
  <alwaysmatcher>
  f  beans/black                     beans/black
  f  beans/borlotti                  beans/borlotti
  f  beans/kidney                    beans/kidney
  f  beans/navy                      beans/navy
  f  beans/pinto                     beans/pinto
  f  beans/turtle                    beans/turtle
  f  fennel                          fennel
  f  fenugreek                       fenugreek
  f  fiddlehead                      fiddlehead
  f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
  f  mammals/skunk                   mammals/skunk
  $ hg debugwalk -v -I.
  * matcher:
  <includematcher includes='(?:)'>
  f  beans/black                     beans/black
  f  beans/borlotti                  beans/borlotti
  f  beans/kidney                    beans/kidney
  f  beans/navy                      beans/navy
  f  beans/pinto                     beans/pinto
  f  beans/turtle                    beans/turtle
  f  fennel                          fennel
  f  fenugreek                       fenugreek
  f  fiddlehead                      fiddlehead
  f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
  f  mammals/skunk                   mammals/skunk

  $ cd mammals
  $ hg debugwalk -v
  * matcher:
  <alwaysmatcher>
  f  beans/black                     ../beans/black
  f  beans/borlotti                  ../beans/borlotti
  f  beans/kidney                    ../beans/kidney
  f  beans/navy                      ../beans/navy
  f  beans/pinto                     ../beans/pinto
  f  beans/turtle                    ../beans/turtle
  f  fennel                          ../fennel
  f  fenugreek                       ../fenugreek
  f  fiddlehead                      ../fiddlehead
  f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
  f  mammals/skunk                   skunk
  $ hg debugwalk -v -X ../beans
  * matcher:
  <differencematcher
    m1=<alwaysmatcher>,
    m2=<includematcher includes='(?:beans(?:/|$))'>>
  f  fennel                          ../fennel
  f  fenugreek                       ../fenugreek
  f  fiddlehead                      ../fiddlehead
  f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
  f  mammals/skunk                   skunk
  $ hg debugwalk -v -I '*k'
  * matcher:
  <includematcher includes='(?:mammals/[^/]*k(?:/|$))'>
  f  mammals/skunk  skunk
  $ hg debugwalk -v -I 'glob:*k'
  * matcher:
  <includematcher includes='(?:mammals/[^/]*k(?:/|$))'>
  f  mammals/skunk  skunk
  $ hg debugwalk -v -I 'relglob:*k'
  * matcher:
  <includematcher includes='(?:(?:|.*/)[^/]*k(?:/|$))'>
  f  beans/black    ../beans/black
  f  fenugreek      ../fenugreek
  f  mammals/skunk  skunk
  $ hg debugwalk -v -I 'relglob:*k' .
  * matcher:
  <intersectionmatcher
    m1=<patternmatcher patterns='(?:mammals(?:/|$))'>,
    m2=<includematcher includes='(?:(?:|.*/)[^/]*k(?:/|$))'>>
  f  mammals/skunk  skunk
  $ hg debugwalk -v -I 're:.*k$'
  * matcher:
  <includematcher includes='(?:.*k$)'>
  f  beans/black    ../beans/black
  f  fenugreek      ../fenugreek
  f  mammals/skunk  skunk
  $ hg debugwalk -v -I 'relre:.*k$'
  * matcher:
  <includematcher includes='(?:.*.*k$)'>
  f  beans/black    ../beans/black
  f  fenugreek      ../fenugreek
  f  mammals/skunk  skunk
  $ hg debugwalk -v -I 'path:beans'
  * matcher:
  <includematcher includes='(?:beans(?:/|$))'>
  f  beans/black     ../beans/black
  f  beans/borlotti  ../beans/borlotti
  f  beans/kidney    ../beans/kidney
  f  beans/navy      ../beans/navy
  f  beans/pinto     ../beans/pinto
  f  beans/turtle    ../beans/turtle
  $ hg debugwalk -v -I 'relpath:detour/../../beans'
  * matcher:
  <includematcher includes='(?:beans(?:/|$))'>
  f  beans/black     ../beans/black
  f  beans/borlotti  ../beans/borlotti
  f  beans/kidney    ../beans/kidney
  f  beans/navy      ../beans/navy
  f  beans/pinto     ../beans/pinto
  f  beans/turtle    ../beans/turtle

  $ hg debugwalk -v 'rootfilesin:'
  * matcher:
  <patternmatcher patterns='(?:[^/]+$)'>
  f  fennel      ../fennel
  f  fenugreek   ../fenugreek
  f  fiddlehead  ../fiddlehead
  $ hg debugwalk -v -I 'rootfilesin:'
  * matcher:
  <includematcher includes='(?:[^/]+$)'>
  f  fennel      ../fennel
  f  fenugreek   ../fenugreek
  f  fiddlehead  ../fiddlehead
  $ hg debugwalk -v 'rootfilesin:.'
  * matcher:
  <patternmatcher patterns='(?:[^/]+$)'>
  f  fennel      ../fennel
  f  fenugreek   ../fenugreek
  f  fiddlehead  ../fiddlehead
  $ hg debugwalk -v -I 'rootfilesin:.'
  * matcher:
  <includematcher includes='(?:[^/]+$)'>
  f  fennel      ../fennel
  f  fenugreek   ../fenugreek
  f  fiddlehead  ../fiddlehead
  $ hg debugwalk -v -X 'rootfilesin:'
  * matcher:
  <differencematcher
    m1=<alwaysmatcher>,
    m2=<includematcher includes='(?:[^/]+$)'>>
  f  beans/black                     ../beans/black
  f  beans/borlotti                  ../beans/borlotti
  f  beans/kidney                    ../beans/kidney
  f  beans/navy                      ../beans/navy
  f  beans/pinto                     ../beans/pinto
  f  beans/turtle                    ../beans/turtle
  f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
  f  mammals/skunk                   skunk
  $ hg debugwalk -v 'rootfilesin:fennel'
  * matcher:
  <patternmatcher patterns='(?:fennel/[^/]+$)'>
  $ hg debugwalk -v -I 'rootfilesin:fennel'
  * matcher:
  <includematcher includes='(?:fennel/[^/]+$)'>
  $ hg debugwalk -v 'rootfilesin:skunk'
  * matcher:
  <patternmatcher patterns='(?:skunk/[^/]+$)'>
  $ hg debugwalk -v -I 'rootfilesin:skunk'
  * matcher:
  <includematcher includes='(?:skunk/[^/]+$)'>
  $ hg debugwalk -v 'rootfilesin:beans'
  * matcher:
  <patternmatcher patterns='(?:beans/[^/]+$)'>
  f  beans/black     ../beans/black
  f  beans/borlotti  ../beans/borlotti
  f  beans/kidney    ../beans/kidney
  f  beans/navy      ../beans/navy
  f  beans/pinto     ../beans/pinto
  f  beans/turtle    ../beans/turtle
  $ hg debugwalk -v -I 'rootfilesin:beans'
  * matcher:
  <includematcher includes='(?:beans/[^/]+$)'>
  f  beans/black     ../beans/black
  f  beans/borlotti  ../beans/borlotti
  f  beans/kidney    ../beans/kidney
  f  beans/navy      ../beans/navy
  f  beans/pinto     ../beans/pinto
  f  beans/turtle    ../beans/turtle
  $ hg debugwalk -v 'rootfilesin:mammals'
  * matcher:
  <patternmatcher patterns='(?:mammals/[^/]+$)'>
  f  mammals/skunk  skunk
  $ hg debugwalk -v -I 'rootfilesin:mammals'
  * matcher:
  <includematcher includes='(?:mammals/[^/]+$)'>
  f  mammals/skunk  skunk
  $ hg debugwalk -v 'rootfilesin:mammals/'
  * matcher:
  <patternmatcher patterns='(?:mammals/[^/]+$)'>
  f  mammals/skunk  skunk
  $ hg debugwalk -v -I 'rootfilesin:mammals/'
  * matcher:
  <includematcher includes='(?:mammals/[^/]+$)'>
  f  mammals/skunk  skunk
  $ hg debugwalk -v -X 'rootfilesin:mammals'
  * matcher:
  <differencematcher
    m1=<alwaysmatcher>,
    m2=<includematcher includes='(?:mammals/[^/]+$)'>>
  f  beans/black                     ../beans/black
  f  beans/borlotti                  ../beans/borlotti
  f  beans/kidney                    ../beans/kidney
  f  beans/navy                      ../beans/navy
  f  beans/pinto                     ../beans/pinto
  f  beans/turtle                    ../beans/turtle
  f  fennel                          ../fennel
  f  fenugreek                       ../fenugreek
  f  fiddlehead                      ../fiddlehead
  f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     Procyonidae/raccoon

  $ hg debugwalk -v .
  * matcher:
  <patternmatcher patterns='(?:mammals(?:/|$))'>
  f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
  f  mammals/skunk                   skunk
  $ hg debugwalk -v -I.
  * matcher:
  <includematcher includes='(?:mammals(?:/|$))'>
  f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
  f  mammals/skunk                   skunk
  $ hg debugwalk -v Procyonidae
  * matcher:
  <patternmatcher patterns='(?:mammals/Procyonidae(?:/|$))'>
  f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     Procyonidae/raccoon

  $ cd Procyonidae
  $ hg debugwalk -v .
  * matcher:
  <patternmatcher patterns='(?:mammals/Procyonidae(?:/|$))'>
  f  mammals/Procyonidae/cacomistle  cacomistle
  f  mammals/Procyonidae/coatimundi  coatimundi
  f  mammals/Procyonidae/raccoon     raccoon
  $ hg debugwalk -v ..
  * matcher:
  <patternmatcher patterns='(?:mammals(?:/|$))'>
  f  mammals/Procyonidae/cacomistle  cacomistle
  f  mammals/Procyonidae/coatimundi  coatimundi
  f  mammals/Procyonidae/raccoon     raccoon
  f  mammals/skunk                   ../skunk
  $ cd ..

  $ hg debugwalk -v ../beans
  * matcher:
  <patternmatcher patterns='(?:beans(?:/|$))'>
  f  beans/black     ../beans/black
  f  beans/borlotti  ../beans/borlotti
  f  beans/kidney    ../beans/kidney
  f  beans/navy      ../beans/navy
  f  beans/pinto     ../beans/pinto
  f  beans/turtle    ../beans/turtle
  $ hg debugwalk -v .
  * matcher:
  <patternmatcher patterns='(?:mammals(?:/|$))'>
  f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
  f  mammals/skunk                   skunk
  $ hg debugwalk -v .hg
  abort: path 'mammals/.hg' is inside nested repo 'mammals'
  [255]
  $ hg debugwalk -v ../.hg
  abort: path contains illegal component: .hg
  [255]
  $ cd ..

  $ hg debugwalk -v -Ibeans
  * matcher:
  <includematcher includes='(?:beans(?:/|$))'>
  f  beans/black     beans/black
  f  beans/borlotti  beans/borlotti
  f  beans/kidney    beans/kidney
  f  beans/navy      beans/navy
  f  beans/pinto     beans/pinto
  f  beans/turtle    beans/turtle
  $ hg debugwalk -v -I '{*,{b,m}*/*}k'
  * matcher:
  <includematcher includes='(?:(?:[^/]*|(?:b|m)[^/]*/[^/]*)k(?:/|$))'>
  f  beans/black    beans/black
  f  fenugreek      fenugreek
  f  mammals/skunk  mammals/skunk
  $ hg debugwalk -v -Ibeans mammals
  * matcher:
  <intersectionmatcher
    m1=<patternmatcher patterns='(?:mammals(?:/|$))'>,
    m2=<includematcher includes='(?:beans(?:/|$))'>>
  $ hg debugwalk -v -Inon-existent
  * matcher:
  <includematcher includes='(?:non\\-existent(?:/|$))'>
  $ hg debugwalk -v -Inon-existent -Ibeans/black
  * matcher:
  <includematcher includes='(?:non\\-existent(?:/|$)|beans/black(?:/|$))'>
  f  beans/black  beans/black
  $ hg debugwalk -v -Ibeans beans/black
  * matcher:
  <intersectionmatcher
    m1=<patternmatcher patterns='(?:beans/black(?:/|$))'>,
    m2=<includematcher includes='(?:beans(?:/|$))'>>
  f  beans/black  beans/black  exact
  $ hg debugwalk -v -Ibeans/black beans
  * matcher:
  <intersectionmatcher
    m1=<patternmatcher patterns='(?:beans(?:/|$))'>,
    m2=<includematcher includes='(?:beans/black(?:/|$))'>>
  f  beans/black  beans/black
  $ hg debugwalk -v -Xbeans/black beans
  * matcher:
  <differencematcher
    m1=<patternmatcher patterns='(?:beans(?:/|$))'>,
    m2=<includematcher includes='(?:beans/black(?:/|$))'>>
  f  beans/borlotti  beans/borlotti
  f  beans/kidney    beans/kidney
  f  beans/navy      beans/navy
  f  beans/pinto     beans/pinto
  f  beans/turtle    beans/turtle
  $ hg debugwalk -v -Xbeans/black -Ibeans
  * matcher:
  <differencematcher
    m1=<includematcher includes='(?:beans(?:/|$))'>,
    m2=<includematcher includes='(?:beans/black(?:/|$))'>>
  f  beans/borlotti  beans/borlotti
  f  beans/kidney    beans/kidney
  f  beans/navy      beans/navy
  f  beans/pinto     beans/pinto
  f  beans/turtle    beans/turtle
  $ hg debugwalk -v -Xbeans/black beans/black
  * matcher:
  <differencematcher
    m1=<patternmatcher patterns='(?:beans/black(?:/|$))'>,
    m2=<includematcher includes='(?:beans/black(?:/|$))'>>
  $ hg debugwalk -v -Xbeans/black -Ibeans/black
  * matcher:
  <differencematcher
    m1=<includematcher includes='(?:beans/black(?:/|$))'>,
    m2=<includematcher includes='(?:beans/black(?:/|$))'>>
  $ hg debugwalk -v -Xbeans beans/black
  * matcher:
  <differencematcher
    m1=<patternmatcher patterns='(?:beans/black(?:/|$))'>,
    m2=<includematcher includes='(?:beans(?:/|$))'>>
  $ hg debugwalk -v -Xbeans -Ibeans/black
  * matcher:
  <differencematcher
    m1=<includematcher includes='(?:beans/black(?:/|$))'>,
    m2=<includematcher includes='(?:beans(?:/|$))'>>
  $ hg debugwalk -v 'glob:mammals/../beans/b*'
  * matcher:
  <patternmatcher patterns='(?:beans/b[^/]*$)'>
  f  beans/black     beans/black
  f  beans/borlotti  beans/borlotti
  $ hg debugwalk -v '-X*/Procyonidae' mammals
  * matcher:
  <differencematcher
    m1=<patternmatcher patterns='(?:mammals(?:/|$))'>,
    m2=<includematcher includes='(?:[^/]*/Procyonidae(?:/|$))'>>
  f  mammals/skunk  mammals/skunk
  $ hg debugwalk -v path:mammals
  * matcher:
  <patternmatcher patterns='(?:mammals(?:/|$))'>
  f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
  f  mammals/skunk                   mammals/skunk
  $ hg debugwalk -v ..
  abort: .. not under root '$TESTTMP/t'
  [255]
  $ hg debugwalk -v beans/../..
  abort: beans/../.. not under root '$TESTTMP/t'
  [255]
  $ hg debugwalk -v .hg
  abort: path contains illegal component: .hg
  [255]
  $ hg debugwalk -v beans/../.hg
  abort: path contains illegal component: .hg
  [255]
  $ hg debugwalk -v beans/../.hg/data
  abort: path contains illegal component: .hg/data
  [255]
  $ hg debugwalk -v beans/.hg
  abort: path 'beans/.hg' is inside nested repo 'beans'
  [255]

Test explicit paths and excludes:

  $ hg debugwalk -v fennel -X fennel
  * matcher:
  <differencematcher
    m1=<patternmatcher patterns='(?:fennel(?:/|$))'>,
    m2=<includematcher includes='(?:fennel(?:/|$))'>>
  $ hg debugwalk -v fennel -X 'f*'
  * matcher:
  <differencematcher
    m1=<patternmatcher patterns='(?:fennel(?:/|$))'>,
    m2=<includematcher includes='(?:f[^/]*(?:/|$))'>>
  $ hg debugwalk -v beans/black -X 'path:beans'
  * matcher:
  <differencematcher
    m1=<patternmatcher patterns='(?:beans/black(?:/|$))'>,
    m2=<includematcher includes='(?:beans(?:/|$))'>>
  $ hg debugwalk -v -I 'path:beans/black' -X 'path:beans'
  * matcher:
  <differencematcher
    m1=<includematcher includes='(?:beans/black(?:/|$))'>,
    m2=<includematcher includes='(?:beans(?:/|$))'>>

Test absolute paths:

  $ hg debugwalk -v `pwd`/beans
  * matcher:
  <patternmatcher patterns='(?:beans(?:/|$))'>
  f  beans/black     beans/black
  f  beans/borlotti  beans/borlotti
  f  beans/kidney    beans/kidney
  f  beans/navy      beans/navy
  f  beans/pinto     beans/pinto
  f  beans/turtle    beans/turtle
  $ hg debugwalk -v `pwd`/..
  abort: $TESTTMP/t/.. not under root '$TESTTMP/t'
  [255]

Test patterns:

  $ hg debugwalk -v glob:\*
  * matcher:
  <patternmatcher patterns='(?:[^/]*$)'>
  f  fennel      fennel
  f  fenugreek   fenugreek
  f  fiddlehead  fiddlehead
#if eol-in-paths
  $ echo glob:glob > glob:glob
  $ hg addremove
  adding glob:glob
  warning: filename contains ':', which is reserved on Windows: 'glob:glob'
  $ hg debugwalk -v glob:\*
  * matcher:
  <patternmatcher patterns='(?:[^/]*$)'>
  f  fennel      fennel
  f  fenugreek   fenugreek
  f  fiddlehead  fiddlehead
  f  glob:glob   glob:glob
  $ hg debugwalk -v glob:glob
  * matcher:
  <patternmatcher patterns='(?:glob$)'>
  glob: $ENOENT$
  $ hg debugwalk -v glob:glob:glob
  * matcher:
  <patternmatcher patterns='(?:glob:glob$)'>
  f  glob:glob  glob:glob  exact
  $ hg debugwalk -v path:glob:glob
  * matcher:
  <patternmatcher patterns='(?:glob:glob(?:/|$))'>
  f  glob:glob  glob:glob  exact
  $ rm glob:glob
  $ hg addremove
  removing glob:glob
#endif

  $ hg debugwalk -v 'glob:**e'
  * matcher:
  <patternmatcher patterns='(?:.*e$)'>
  f  beans/turtle                    beans/turtle
  f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle

  $ hg debugwalk -v 're:.*[kb]$'
  * matcher:
  <patternmatcher patterns='(?:.*[kb]$)'>
  f  beans/black    beans/black
  f  fenugreek      fenugreek
  f  mammals/skunk  mammals/skunk

  $ hg debugwalk -v path:beans/black
  * matcher:
  <patternmatcher patterns='(?:beans/black(?:/|$))'>
  f  beans/black  beans/black  exact
  $ hg debugwalk -v path:beans//black
  * matcher:
  <patternmatcher patterns='(?:beans/black(?:/|$))'>
  f  beans/black  beans/black  exact

  $ hg debugwalk -v relglob:Procyonidae
  * matcher:
  <patternmatcher patterns='(?:(?:|.*/)Procyonidae$)'>
  $ hg debugwalk -v 'relglob:Procyonidae/**'
  * matcher:
  <patternmatcher patterns='(?:(?:|.*/)Procyonidae/.*$)'>
  f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
  $ hg debugwalk -v 'relglob:Procyonidae/**' fennel
  * matcher:
  <patternmatcher patterns='(?:(?:|.*/)Procyonidae/.*$|fennel(?:/|$))'>
  f  fennel                          fennel                          exact
  f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
  $ hg debugwalk -v beans 'glob:beans/*'
  * matcher:
  <patternmatcher patterns='(?:beans(?:/|$)|beans/[^/]*$)'>
  f  beans/black     beans/black
  f  beans/borlotti  beans/borlotti
  f  beans/kidney    beans/kidney
  f  beans/navy      beans/navy
  f  beans/pinto     beans/pinto
  f  beans/turtle    beans/turtle
  $ hg debugwalk -v 'glob:mamm**'
  * matcher:
  <patternmatcher patterns='(?:mamm.*$)'>
  f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
  f  mammals/skunk                   mammals/skunk
  $ hg debugwalk -v 'glob:mamm**' fennel
  * matcher:
  <patternmatcher patterns='(?:mamm.*$|fennel(?:/|$))'>
  f  fennel                          fennel                          exact
  f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
  f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
  f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
  f  mammals/skunk                   mammals/skunk
  $ hg debugwalk -v 'glob:j*'
  * matcher:
  <patternmatcher patterns='(?:j[^/]*$)'>
  $ hg debugwalk -v NOEXIST
  * matcher:
  <patternmatcher patterns='(?:NOEXIST(?:/|$))'>
  NOEXIST: * (glob)

#if fifo
  $ mkfifo fifo
  $ hg debugwalk -v fifo
  * matcher:
  <patternmatcher patterns='(?:fifo(?:/|$))'>
  fifo: unsupported file type (type is fifo)
#endif

  $ rm fenugreek
  $ hg debugwalk -v fenugreek
  * matcher:
  <patternmatcher patterns='(?:fenugreek(?:/|$))'>
  f  fenugreek  fenugreek  exact
  $ hg rm fenugreek
  $ hg debugwalk -v fenugreek
  * matcher:
  <patternmatcher patterns='(?:fenugreek(?:/|$))'>
  f  fenugreek  fenugreek  exact
  $ touch new
  $ hg debugwalk -v new
  * matcher:
  <patternmatcher patterns='(?:new(?:/|$))'>
  f  new  new  exact

  $ mkdir ignored
  $ touch ignored/file
  $ echo '^ignored$' > .hgignore
  $ hg debugwalk -v ignored
  * matcher:
  <patternmatcher patterns='(?:ignored(?:/|$))'>
  $ hg debugwalk -v ignored/file
  * matcher:
  <patternmatcher patterns='(?:ignored/file(?:/|$))'>
  f  ignored/file  ignored/file  exact

Test listfile and listfile0

  $ "$PYTHON" -c "open('listfile0', 'wb').write(b'fenugreek\0new\0')"
  $ hg debugwalk -v -I 'listfile0:listfile0'
  * matcher:
  <includematcher includes='(?:fenugreek(?:/|$)|new(?:/|$))'>
  f  fenugreek  fenugreek
  f  new        new
  $ "$PYTHON" -c "open('listfile', 'wb').write(b'fenugreek\nnew\r\nmammals/skunk\n')"
  $ hg debugwalk -v -I 'listfile:listfile'
  * matcher:
  <includematcher includes='(?:fenugreek(?:/|$)|new(?:/|$)|mammals/skunk(?:/|$))'>
  f  fenugreek      fenugreek
  f  mammals/skunk  mammals/skunk
  f  new            new

  $ cd ..
  $ hg debugwalk -v -R t t/mammals/skunk
  * matcher:
  <patternmatcher patterns='(?:mammals/skunk(?:/|$))'>
  f  mammals/skunk  t/mammals/skunk  exact
  $ mkdir t2
  $ cd t2
  $ hg debugwalk -v -R ../t ../t/mammals/skunk
  * matcher:
  <patternmatcher patterns='(?:mammals/skunk(?:/|$))'>
  f  mammals/skunk  ../t/mammals/skunk  exact
  $ hg debugwalk -v --cwd ../t mammals/skunk
  * matcher:
  <patternmatcher patterns='(?:mammals/skunk(?:/|$))'>
  f  mammals/skunk  mammals/skunk  exact

  $ cd ..

Test split patterns on overflow

  $ cd t
  $ echo fennel > overflow.list
  $ cat >> printnum.py <<EOF
  > from __future__ import print_function
  > for i in range(20000 // 100):
  >   print('x' * 100)
  > EOF
  $ "$PYTHON" printnum.py >> overflow.list
  $ echo fenugreek >> overflow.list
  $ hg debugwalk 'listfile:overflow.list' 2>&1 | egrep -v '^xxx'
  f  fennel     fennel     exact
  f  fenugreek  fenugreek  exact
  $ cd ..