view tests/test-revset.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

  $ HGENCODING=utf-8
  $ export HGENCODING
  $ cat > testrevset.py << EOF
  > import mercurial.revset
  > 
  > baseset = mercurial.revset.baseset
  > 
  > def r3232(repo, subset, x):
  >     """"simple revset that return [3,2,3,2]
  > 
  >     revisions duplicated on purpose.
  >     """
  >     if 3 not in subset:
  >        if 2 in subset:
  >            return baseset([2,2])
  >        return baseset()
  >     return baseset([3,3,2,2])
  > 
  > mercurial.revset.symbols[b'r3232'] = r3232
  > EOF
  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > drawdag=$TESTDIR/drawdag.py
  > testrevset=$TESTTMP/testrevset.py
  > EOF

  $ try() {
  >   hg debugrevspec --debug "$@"
  > }

  $ log() {
  >   hg log --template '{rev}\n' -r "$1"
  > }

extension to build '_intlist()' and '_hexlist()', which is necessary because
these predicates use '\0' as a separator:

  $ cat <<EOF > debugrevlistspec.py
  > from __future__ import absolute_import
  > from mercurial import (
  >     node as nodemod,
  >     registrar,
  >     revset,
  >     revsetlang,
  > )
  > from mercurial.utils import stringutil
  > cmdtable = {}
  > command = registrar.command(cmdtable)
  > @command(b'debugrevlistspec',
  >     [(b'', b'optimize', None, b'print parsed tree after optimizing'),
  >      (b'', b'bin', None, b'unhexlify arguments')])
  > def debugrevlistspec(ui, repo, fmt, *args, **opts):
  >     if opts['bin']:
  >         args = map(nodemod.bin, args)
  >     expr = revsetlang.formatspec(fmt, list(args))
  >     if ui.verbose:
  >         tree = revsetlang.parse(expr, lookup=revset.lookupfn(repo))
  >         ui.note(revsetlang.prettyformat(tree), b"\n")
  >         if opts["optimize"]:
  >             opttree = revsetlang.optimize(revsetlang.analyze(tree))
  >             ui.note(b"* optimized:\n", revsetlang.prettyformat(opttree),
  >                     b"\n")
  >     func = revset.match(ui, expr, lookup=revset.lookupfn(repo))
  >     revs = func(repo)
  >     if ui.verbose:
  >         ui.note(b"* set:\n", stringutil.prettyrepr(revs), b"\n")
  >     for c in revs:
  >         ui.write(b"%d\n" % c)
  > EOF
  $ cat <<EOF >> $HGRCPATH
  > [extensions]
  > debugrevlistspec = $TESTTMP/debugrevlistspec.py
  > EOF
  $ trylist() {
  >   hg debugrevlistspec --debug "$@"
  > }

  $ hg init repo
  $ cd repo

  $ echo a > a
  $ hg branch a
  marked working directory as branch a
  (branches are permanent and global, did you want a bookmark?)
  $ hg ci -Aqm0

  $ echo b > b
  $ hg branch b
  marked working directory as branch b
  $ hg ci -Aqm1

  $ rm a
  $ hg branch a-b-c-
  marked working directory as branch a-b-c-
  $ hg ci -Aqm2 -u Bob

  $ hg log -r "extra('branch', 'a-b-c-')" --template '{rev}\n'
  2
  $ hg log -r "extra('branch')" --template '{rev}\n'
  0
  1
  2
  $ hg log -r "extra('branch', 're:a')" --template '{rev} {branch}\n'
  0 a
  2 a-b-c-

  $ hg co 1
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg branch +a+b+c+
  marked working directory as branch +a+b+c+
  $ hg ci -Aqm3

  $ hg co 2  # interleave
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo bb > b
  $ hg branch -- -a-b-c-
  marked working directory as branch -a-b-c-
  $ hg ci -Aqm4 -d "May 12 2005"

  $ hg co 3
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg branch !a/b/c/
  marked working directory as branch !a/b/c/
  $ hg ci -Aqm"5 bug"

  $ hg merge 4
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg branch _a_b_c_
  marked working directory as branch _a_b_c_
  $ hg ci -Aqm"6 issue619"

  $ hg branch .a.b.c.
  marked working directory as branch .a.b.c.
  $ hg ci -Aqm7

  $ hg branch all
  marked working directory as branch all

  $ hg co 4
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg branch é
  marked working directory as branch \xc3\xa9 (esc)
  $ hg ci -Aqm9

  $ hg tag -r6 1.0
  $ hg bookmark -r6 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

  $ hg clone --quiet -U -r 7 . ../remote1
  $ hg clone --quiet -U -r 8 . ../remote2
  $ echo "[paths]" >> .hg/hgrc
  $ echo "default = ../remote1" >> .hg/hgrc

trivial

  $ try 0:1
  (range
    (symbol '0')
    (symbol '1'))
  * set:
  <spanset+ 0:2>
  0
  1
  $ try --optimize :
  (rangeall
    None)
  * optimized:
  (rangeall
    None)
  * set:
  <spanset+ 0:10>
  0
  1
  2
  3
  4
  5
  6
  7
  8
  9
  $ try 3::6
  (dagrange
    (symbol '3')
    (symbol '6'))
  * set:
  <baseset+ [3, 5, 6]>
  3
  5
  6
  $ try '0|1|2'
  (or
    (list
      (symbol '0')
      (symbol '1')
      (symbol '2')))
  * set:
  <baseset [0, 1, 2]>
  0
  1
  2

names that should work without quoting

  $ try a
  (symbol 'a')
  * set:
  <baseset [0]>
  0
  $ try b-a
  (minus
    (symbol 'b')
    (symbol 'a'))
  * set:
  <filteredset
    <baseset [1]>,
    <not
      <baseset [0]>>>
  1
  $ try _a_b_c_
  (symbol '_a_b_c_')
  * set:
  <baseset [6]>
  6
  $ try _a_b_c_-a
  (minus
    (symbol '_a_b_c_')
    (symbol 'a'))
  * set:
  <filteredset
    <baseset [6]>,
    <not
      <baseset [0]>>>
  6
  $ try .a.b.c.
  (symbol '.a.b.c.')
  * set:
  <baseset [7]>
  7
  $ try .a.b.c.-a
  (minus
    (symbol '.a.b.c.')
    (symbol 'a'))
  * set:
  <filteredset
    <baseset [7]>,
    <not
      <baseset [0]>>>
  7

names that should be caught by fallback mechanism

  $ try -- '-a-b-c-'
  (symbol '-a-b-c-')
  * set:
  <baseset [4]>
  4
  $ log -a-b-c-
  4
  $ try '+a+b+c+'
  (symbol '+a+b+c+')
  * set:
  <baseset [3]>
  3
  $ try '+a+b+c+:'
  (rangepost
    (symbol '+a+b+c+'))
  * set:
  <spanset+ 3:10>
  3
  4
  5
  6
  7
  8
  9
  $ try ':+a+b+c+'
  (rangepre
    (symbol '+a+b+c+'))
  * set:
  <spanset+ 0:4>
  0
  1
  2
  3
  $ try -- '-a-b-c-:+a+b+c+'
  (range
    (symbol '-a-b-c-')
    (symbol '+a+b+c+'))
  * set:
  <spanset- 3:5>
  4
  3
  $ log '-a-b-c-:+a+b+c+'
  4
  3

  $ try -- -a-b-c--a # complains
  (minus
    (minus
      (minus
        (negate
          (symbol 'a'))
        (symbol 'b'))
      (symbol 'c'))
    (negate
      (symbol 'a')))
  abort: unknown revision '-a'!
  [255]
  $ try é
  (symbol '\xc3\xa9')
  * set:
  <baseset [9]>
  9

no quoting needed

  $ log ::a-b-c-
  0
  1
  2

quoting needed

  $ try '"-a-b-c-"-a'
  (minus
    (string '-a-b-c-')
    (symbol 'a'))
  * set:
  <filteredset
    <baseset [4]>,
    <not
      <baseset [0]>>>
  4

  $ log '1 or 2'
  1
  2
  $ log '1|2'
  1
  2
  $ log '1 and 2'
  $ log '1&2'
  $ try '1&2|3' # precedence - and is higher
  (or
    (list
      (and
        (symbol '1')
        (symbol '2'))
      (symbol '3')))
  * set:
  <addset
    <baseset []>,
    <baseset [3]>>
  3
  $ try '1|2&3'
  (or
    (list
      (symbol '1')
      (and
        (symbol '2')
        (symbol '3'))))
  * set:
  <addset
    <baseset [1]>,
    <baseset []>>
  1
  $ try '1&2&3' # associativity
  (and
    (and
      (symbol '1')
      (symbol '2'))
    (symbol '3'))
  * set:
  <baseset []>
  $ try '1|(2|3)'
  (or
    (list
      (symbol '1')
      (group
        (or
          (list
            (symbol '2')
            (symbol '3'))))))
  * set:
  <addset
    <baseset [1]>,
    <baseset [2, 3]>>
  1
  2
  3
  $ log '1.0' # tag
  6
  $ log 'a' # branch
  0
  $ log '2785f51ee'
  0
  $ log 'date(2005)'
  4
  $ log 'date(this is a test)'
  hg: parse error at 10: unexpected token: symbol
  (date(this is a test)
             ^ here)
  [255]
  $ log 'date()'
  hg: parse error: date requires a string
  [255]
  $ log 'date'
  abort: unknown revision 'date'!
  [255]
  $ log 'date('
  hg: parse error at 5: not a prefix: end
  (date(
        ^ here)
  [255]
  $ log 'date("\xy")'
  hg: parse error: invalid \x escape* (glob)
  [255]
  $ log 'date(tip)'
  hg: parse error: invalid date: 'tip'
  [255]
  $ log '0:date'
  abort: unknown revision 'date'!
  [255]
  $ log '::"date"'
  abort: unknown revision 'date'!
  [255]
  $ hg book date -r 4
  $ log '0:date'
  0
  1
  2
  3
  4
  $ log '::date'
  0
  1
  2
  4
  $ log '::"date"'
  0
  1
  2
  4
  $ log 'date(2005) and 1::'
  4
  $ hg book -d date

function name should be a symbol

  $ log '"date"(2005)'
  hg: parse error: not a symbol
  [255]

keyword arguments

  $ log 'extra(branch, value=a)'
  0

  $ log 'extra(branch, a, b)'
  hg: parse error: extra takes at most 2 positional arguments
  [255]
  $ log 'extra(a, label=b)'
  hg: parse error: extra got multiple values for keyword argument 'label'
  [255]
  $ log 'extra(label=branch, default)'
  hg: parse error: extra got an invalid argument
  [255]
  $ log 'extra(branch, foo+bar=baz)'
  hg: parse error: extra got an invalid argument
  [255]
  $ log 'extra(unknown=branch)'
  hg: parse error: extra got an unexpected keyword argument 'unknown'
  [255]

  $ try 'foo=bar|baz'
  (keyvalue
    (symbol 'foo')
    (or
      (list
        (symbol 'bar')
        (symbol 'baz'))))
  hg: parse error: can't use a key-value pair in this context
  [255]

 right-hand side should be optimized recursively

  $ try --optimize 'foo=(not public())'
  (keyvalue
    (symbol 'foo')
    (group
      (not
        (func
          (symbol 'public')
          None))))
  * optimized:
  (keyvalue
    (symbol 'foo')
    (func
      (symbol '_notpublic')
      None))
  hg: parse error: can't use a key-value pair in this context
  [255]

relation-subscript operator has the highest binding strength (as function call):

  $ hg debugrevspec -p parsed 'tip:tip^#generations[-1]'
  * parsed:
  (range
    (symbol 'tip')
    (relsubscript
      (parentpost
        (symbol 'tip'))
      (symbol 'generations')
      (negate
        (symbol '1'))))
  9
  8
  7
  6
  5
  4

  $ hg debugrevspec -p parsed --no-show-revs 'not public()#generations[0]'
  * parsed:
  (not
    (relsubscript
      (func
        (symbol 'public')
        None)
      (symbol 'generations')
      (symbol '0')))

left-hand side of relation-subscript operator should be optimized recursively:

  $ hg debugrevspec -p analyzed -p optimized --no-show-revs \
  > '(not public())#generations[0]'
  * analyzed:
  (relsubscript
    (not
      (func
        (symbol 'public')
        None))
    (symbol 'generations')
    (symbol '0'))
  * optimized:
  (relsubscript
    (func
      (symbol '_notpublic')
      None)
    (symbol 'generations')
    (symbol '0'))

resolution of subscript and relation-subscript ternary operators:

  $ hg debugrevspec -p analyzed 'tip[0]'
  * analyzed:
  (subscript
    (symbol 'tip')
    (symbol '0'))
  hg: parse error: can't use a subscript in this context
  [255]

  $ hg debugrevspec -p analyzed 'tip#rel[0]'
  * analyzed:
  (relsubscript
    (symbol 'tip')
    (symbol 'rel')
    (symbol '0'))
  hg: parse error: unknown identifier: rel
  [255]

  $ hg debugrevspec -p analyzed '(tip#rel)[0]'
  * analyzed:
  (subscript
    (relation
      (symbol 'tip')
      (symbol 'rel'))
    (symbol '0'))
  hg: parse error: can't use a subscript in this context
  [255]

  $ hg debugrevspec -p analyzed 'tip#rel[0][1]'
  * analyzed:
  (subscript
    (relsubscript
      (symbol 'tip')
      (symbol 'rel')
      (symbol '0'))
    (symbol '1'))
  hg: parse error: can't use a subscript in this context
  [255]

  $ hg debugrevspec -p analyzed 'tip#rel0#rel1[1]'
  * analyzed:
  (relsubscript
    (relation
      (symbol 'tip')
      (symbol 'rel0'))
    (symbol 'rel1')
    (symbol '1'))
  hg: parse error: unknown identifier: rel1
  [255]

  $ hg debugrevspec -p analyzed 'tip#rel0[0]#rel1[1]'
  * analyzed:
  (relsubscript
    (relsubscript
      (symbol 'tip')
      (symbol 'rel0')
      (symbol '0'))
    (symbol 'rel1')
    (symbol '1'))
  hg: parse error: unknown identifier: rel1
  [255]

parse errors of relation, subscript and relation-subscript operators:

  $ hg debugrevspec '[0]'
  hg: parse error at 0: not a prefix: [
  ([0]
   ^ here)
  [255]
  $ hg debugrevspec '.#'
  hg: parse error at 2: not a prefix: end
  (.#
     ^ here)
  [255]
  $ hg debugrevspec '#rel'
  hg: parse error at 0: not a prefix: #
  (#rel
   ^ here)
  [255]
  $ hg debugrevspec '.#rel[0'
  hg: parse error at 7: unexpected token: end
  (.#rel[0
          ^ here)
  [255]
  $ hg debugrevspec '.]'
  hg: parse error at 1: invalid token
  (.]
    ^ here)
  [255]

  $ hg debugrevspec '.#generations[a]'
  hg: parse error: relation subscript must be an integer
  [255]
  $ hg debugrevspec '.#generations[1-2]'
  hg: parse error: relation subscript must be an integer
  [255]

parsed tree at stages:

  $ hg debugrevspec -p all '()'
  * parsed:
  (group
    None)
  * expanded:
  (group
    None)
  * concatenated:
  (group
    None)
  * analyzed:
  None
  * optimized:
  None
  hg: parse error: missing argument
  [255]

  $ hg debugrevspec --no-optimized -p all '()'
  * parsed:
  (group
    None)
  * expanded:
  (group
    None)
  * concatenated:
  (group
    None)
  * analyzed:
  None
  hg: parse error: missing argument
  [255]

  $ hg debugrevspec -p parsed -p analyzed -p optimized '(0|1)-1'
  * parsed:
  (minus
    (group
      (or
        (list
          (symbol '0')
          (symbol '1'))))
    (symbol '1'))
  * analyzed:
  (and
    (or
      (list
        (symbol '0')
        (symbol '1')))
    (not
      (symbol '1')))
  * optimized:
  (difference
    (func
      (symbol '_list')
      (string '0\x001'))
    (symbol '1'))
  0

  $ hg debugrevspec -p unknown '0'
  abort: invalid stage name: unknown
  [255]

  $ hg debugrevspec -p all --optimize '0'
  abort: cannot use --optimize with --show-stage
  [255]

verify optimized tree:

  $ hg debugrevspec --verify '0|1'

  $ hg debugrevspec --verify -v -p analyzed -p optimized 'r3232() & 2'
  * analyzed:
  (and
    (func
      (symbol 'r3232')
      None)
    (symbol '2'))
  * optimized:
  (andsmally
    (func
      (symbol 'r3232')
      None)
    (symbol '2'))
  * analyzed set:
  <baseset [2]>
  * optimized set:
  <baseset [2, 2]>
  --- analyzed
  +++ optimized
   2
  +2
  [1]

  $ hg debugrevspec --no-optimized --verify-optimized '0'
  abort: cannot use --verify-optimized with --no-optimized
  [255]

Test that symbols only get parsed as functions if there's an opening
parenthesis.

  $ hg book only -r 9
  $ log 'only(only)'   # Outer "only" is a function, inner "only" is the bookmark
  8
  9

':y' behaves like '0:y', but can't be rewritten as such since the revision '0'
may be hidden (issue5385)

  $ try -p parsed -p analyzed ':'
  * parsed:
  (rangeall
    None)
  * analyzed:
  (rangeall
    None)
  * set:
  <spanset+ 0:10>
  0
  1
  2
  3
  4
  5
  6
  7
  8
  9
  $ try -p analyzed ':1'
  * analyzed:
  (rangepre
    (symbol '1'))
  * set:
  <spanset+ 0:2>
  0
  1
  $ try -p analyzed ':(1|2)'
  * analyzed:
  (rangepre
    (or
      (list
        (symbol '1')
        (symbol '2'))))
  * set:
  <spanset+ 0:3>
  0
  1
  2
  $ try -p analyzed ':(1&2)'
  * analyzed:
  (rangepre
    (and
      (symbol '1')
      (symbol '2')))
  * set:
  <baseset []>

infix/suffix resolution of ^ operator (issue2884, issue5764):

 x^:y means (x^):y

  $ try '1^:2'
  (range
    (parentpost
      (symbol '1'))
    (symbol '2'))
  * set:
  <spanset+ 0:3>
  0
  1
  2

  $ try '1^::2'
  (dagrange
    (parentpost
      (symbol '1'))
    (symbol '2'))
  * set:
  <baseset+ [0, 1, 2]>
  0
  1
  2

  $ try '1^..2'
  (dagrange
    (parentpost
      (symbol '1'))
    (symbol '2'))
  * set:
  <baseset+ [0, 1, 2]>
  0
  1
  2

  $ try '9^:'
  (rangepost
    (parentpost
      (symbol '9')))
  * set:
  <spanset+ 8:10>
  8
  9

  $ try '9^::'
  (dagrangepost
    (parentpost
      (symbol '9')))
  * set:
  <generatorsetasc+>
  8
  9

  $ try '9^..'
  (dagrangepost
    (parentpost
      (symbol '9')))
  * set:
  <generatorsetasc+>
  8
  9

 x^:y should be resolved before omitting group operators

  $ try '1^(:2)'
  (parent
    (symbol '1')
    (group
      (rangepre
        (symbol '2'))))
  hg: parse error: ^ expects a number 0, 1, or 2
  [255]

 x^:y should be resolved recursively

  $ try 'sort(1^:2)'
  (func
    (symbol 'sort')
    (range
      (parentpost
        (symbol '1'))
      (symbol '2')))
  * set:
  <spanset+ 0:3>
  0
  1
  2

  $ try '(3^:4)^:2'
  (range
    (parentpost
      (group
        (range
          (parentpost
            (symbol '3'))
          (symbol '4'))))
    (symbol '2'))
  * set:
  <spanset+ 0:3>
  0
  1
  2

  $ try '(3^::4)^::2'
  (dagrange
    (parentpost
      (group
        (dagrange
          (parentpost
            (symbol '3'))
          (symbol '4'))))
    (symbol '2'))
  * set:
  <baseset+ [0, 1, 2]>
  0
  1
  2

  $ try '(9^:)^:'
  (rangepost
    (parentpost
      (group
        (rangepost
          (parentpost
            (symbol '9'))))))
  * set:
  <spanset+ 4:10>
  4
  5
  6
  7
  8
  9

 x^ in alias should also be resolved

  $ try 'A' --config 'revsetalias.A=1^:2'
  (symbol 'A')
  * expanded:
  (range
    (parentpost
      (symbol '1'))
    (symbol '2'))
  * set:
  <spanset+ 0:3>
  0
  1
  2

  $ try 'A:2' --config 'revsetalias.A=1^'
  (range
    (symbol 'A')
    (symbol '2'))
  * expanded:
  (range
    (parentpost
      (symbol '1'))
    (symbol '2'))
  * set:
  <spanset+ 0:3>
  0
  1
  2

 but not beyond the boundary of alias expansion, because the resolution should
 be made at the parsing stage

  $ try '1^A' --config 'revsetalias.A=:2'
  (parent
    (symbol '1')
    (symbol 'A'))
  * expanded:
  (parent
    (symbol '1')
    (rangepre
      (symbol '2')))
  hg: parse error: ^ expects a number 0, 1, or 2
  [255]

'::' itself isn't a valid expression

  $ try '::'
  (dagrangeall
    None)
  hg: parse error: can't use '::' in this context
  [255]

ancestor can accept 0 or more arguments

  $ log 'ancestor()'
  $ log 'ancestor(1)'
  1
  $ log 'ancestor(4,5)'
  1
  $ log 'ancestor(4,5) and 4'
  $ log 'ancestor(0,0,1,3)'
  0
  $ log 'ancestor(3,1,5,3,5,1)'
  1
  $ log 'ancestor(0,1,3,5)'
  0
  $ log 'ancestor(1,2,3,4,5)'
  1

test ancestors

  $ hg log -G -T '{rev}\n' --config experimental.graphshorten=True
  @  9
  o  8
  | o  7
  | o  6
  |/|
  | o  5
  o |  4
  | o  3
  o |  2
  |/
  o  1
  o  0

  $ log 'ancestors(5)'
  0
  1
  3
  5
  $ log 'ancestor(ancestors(5))'
  0
  $ log '::r3232()'
  0
  1
  2
  3

test common ancestors

  $ hg log -T '{rev}\n' -r 'commonancestors(7 + 9)'
  0
  1
  2
  4

  $ hg log -T '{rev}\n' -r 'commonancestors(head())'
  0
  1
  2
  4

  $ hg log -T '{rev}\n' -r 'commonancestors(9)'
  0
  1
  2
  4
  8
  9

test ancestor variants of empty revision

  $ log 'ancestor(none())'
  $ log 'ancestors(none())'
  $ log 'commonancestors(none())'

test ancestors with depth limit

 (depth=0 selects the node itself)

  $ log 'reverse(ancestors(9, depth=0))'
  9

 (interleaved: '4' would be missing if heap queue were higher depth first)

  $ log 'reverse(ancestors(8:9, depth=1))'
  9
  8
  4

 (interleaved: '2' would be missing if heap queue were higher depth first)

  $ log 'reverse(ancestors(7+8, depth=2))'
  8
  7
  6
  5
  4
  2

 (walk example above by separate queries)

  $ log 'reverse(ancestors(8, depth=2)) + reverse(ancestors(7, depth=2))'
  8
  4
  2
  7
  6
  5

 (walk 2nd and 3rd ancestors)

  $ log 'reverse(ancestors(7, depth=3, startdepth=2))'
  5
  4
  3
  2

 (interleaved: '4' would be missing if higher-depth ancestors weren't scanned)

  $ log 'reverse(ancestors(7+8, depth=2, startdepth=2))'
  5
  4
  2

 (note that 'ancestors(x, depth=y, startdepth=z)' does not identical to
 'ancestors(x, depth=y) - ancestors(x, depth=z-1)' because a node may have
 multiple depths)

  $ log 'reverse(ancestors(7+8, depth=2) - ancestors(7+8, depth=1))'
  5
  2

test bad arguments passed to ancestors()

  $ log 'ancestors(., depth=-1)'
  hg: parse error: negative depth
  [255]
  $ log 'ancestors(., depth=foo)'
  hg: parse error: ancestors expects an integer depth
  [255]

test descendants

  $ hg log -G -T '{rev}\n' --config experimental.graphshorten=True
  @  9
  o  8
  | o  7
  | o  6
  |/|
  | o  5
  o |  4
  | o  3
  o |  2
  |/
  o  1
  o  0

 (null is ultimate root and has optimized path)

  $ log 'null:4 & descendants(null)'
  -1
  0
  1
  2
  3
  4

 (including merge)

  $ log ':8 & descendants(2)'
  2
  4
  6
  7
  8

 (multiple roots)

  $ log ':8 & descendants(2+5)'
  2
  4
  5
  6
  7
  8

test descendants with depth limit

 (depth=0 selects the node itself)

  $ log 'descendants(0, depth=0)'
  0
  $ log 'null: & descendants(null, depth=0)'
  -1

 (p2 = null should be ignored)

  $ log 'null: & descendants(null, depth=2)'
  -1
  0
  1

 (multiple paths: depth(6) = (2, 3))

  $ log 'descendants(1+3, depth=2)'
  1
  2
  3
  4
  5
  6

 (multiple paths: depth(5) = (1, 2), depth(6) = (2, 3))

  $ log 'descendants(3+1, depth=2, startdepth=2)'
  4
  5
  6

 (multiple depths: depth(6) = (0, 2, 4), search for depth=2)

  $ log 'descendants(0+3+6, depth=3, startdepth=1)'
  1
  2
  3
  4
  5
  6
  7

 (multiple depths: depth(6) = (0, 4), no match)

  $ log 'descendants(0+6, depth=3, startdepth=1)'
  1
  2
  3
  4
  5
  7

test ancestors/descendants relation subscript:

  $ log 'tip#generations[0]'
  9
  $ log '.#generations[-1]'
  8
  $ log '.#g[(-1)]'
  8

  $ hg debugrevspec -p parsed 'roots(:)#g[2]'
  * parsed:
  (relsubscript
    (func
      (symbol 'roots')
      (rangeall
        None))
    (symbol 'g')
    (symbol '2'))
  2
  3

test author

  $ log 'author(bob)'
  2
  $ log 'author("re:bob|test")'
  0
  1
  2
  3
  4
  5
  6
  7
  8
  9
  $ log 'author(r"re:\S")'
  0
  1
  2
  3
  4
  5
  6
  7
  8
  9
  $ log 'branch(é)'
  8
  9
  $ log 'branch(a)'
  0
  $ hg log -r 'branch("re:a")' --template '{rev} {branch}\n'
  0 a
  2 a-b-c-
  3 +a+b+c+
  4 -a-b-c-
  5 !a/b/c/
  6 _a_b_c_
  7 .a.b.c.
  $ log 'children(ancestor(4,5))'
  2
  3

  $ log 'children(4)'
  6
  8
  $ log 'children(null)'
  0

  $ log 'closed()'
  $ log 'contains(a)'
  0
  1
  3
  5
  $ log 'contains("../repo/a")'
  0
  1
  3
  5
  $ log 'desc(B)'
  5
  $ hg log -r 'desc(r"re:S?u")' --template "{rev} {desc|firstline}\n"
  5 5 bug
  6 6 issue619
  $ log 'descendants(2 or 3)'
  2
  3
  4
  5
  6
  7
  8
  9
  $ log 'file("b*")'
  1
  4
  $ log 'filelog("b")'
  1
  4
  $ log 'filelog("../repo/b")'
  1
  4
  $ log 'follow()'
  0
  1
  2
  4
  8
  9
  $ log 'grep("issue\d+")'
  6
  $ try 'grep("(")' # invalid regular expression
  (func
    (symbol 'grep')
    (string '('))
  hg: parse error: invalid match pattern: (unbalanced parenthesis|missing \),.*) (re)
  [255]
  $ try 'grep("\bissue\d+")'
  (func
    (symbol 'grep')
    (string '\x08issue\\d+'))
  * set:
  <filteredset
    <fullreposet+ 0:10>,
    <grep '\x08issue\\d+'>>
  $ try 'grep(r"\bissue\d+")'
  (func
    (symbol 'grep')
    (string '\\bissue\\d+'))
  * set:
  <filteredset
    <fullreposet+ 0:10>,
    <grep '\\bissue\\d+'>>
  6
  $ try 'grep(r"\")'
  hg: parse error at 7: unterminated string
  (grep(r"\")
          ^ here)
  [255]
  $ log 'head()'
  0
  1
  2
  3
  4
  5
  6
  7
  9

Test heads

  $ log 'heads(6::)'
  7

 heads() can be computed in subset '9:'

  $ hg debugrevspec -s '9: & heads(all())'
  * set:
  <filteredset
    <filteredset
      <baseset [9]>,
      <spanset+ 0:10>>,
    <not
      <filteredset
        <baseset [9]>, set([0, 1, 2, 3, 4, 5, 6, 8])>>>
  9

 but should follow the order of the subset

  $ log 'heads(all())'
  7
  9
  $ log 'heads(tip:0)'
  7
  9
  $ log 'tip:0 & heads(all())'
  9
  7
  $ log 'tip:0 & heads(0:tip)'
  9
  7

  $ log 'keyword(issue)'
  6
  $ log 'keyword("test a")'

Test first (=limit) and last

  $ log 'limit(head(), 1)'
  0
  $ log 'limit(author("re:bob|test"), 3, 5)'
  5
  6
  7
  $ log 'limit(author("re:bob|test"), offset=6)'
  6
  $ log 'limit(author("re:bob|test"), offset=10)'
  $ log 'limit(all(), 1, -1)'
  hg: parse error: negative offset
  [255]
  $ log 'limit(all(), -1)'
  hg: parse error: negative number to select
  [255]
  $ log 'limit(all(), 0)'

  $ log 'last(all(), -1)'
  hg: parse error: negative number to select
  [255]
  $ log 'last(all(), 0)'
  $ log 'last(all(), 1)'
  9
  $ log 'last(all(), 2)'
  8
  9

Test smartset.slice() by first/last()

 (using unoptimized set, filteredset as example)

  $ hg debugrevspec --no-show-revs -s '0:7 & branch("re:")'
  * set:
  <filteredset
    <spanset+ 0:8>,
    <branch 're:'>>
  $ log 'limit(0:7 & branch("re:"), 3, 4)'
  4
  5
  6
  $ log 'limit(7:0 & branch("re:"), 3, 4)'
  3
  2
  1
  $ log 'last(0:7 & branch("re:"), 2)'
  6
  7

 (using baseset)

  $ hg debugrevspec --no-show-revs -s 0+1+2+3+4+5+6+7
  * set:
  <baseset [0, 1, 2, 3, 4, 5, 6, 7]>
  $ hg debugrevspec --no-show-revs -s 0::7
  * set:
  <baseset+ [0, 1, 2, 3, 4, 5, 6, 7]>
  $ log 'limit(0+1+2+3+4+5+6+7, 3, 4)'
  4
  5
  6
  $ log 'limit(sort(0::7, rev), 3, 4)'
  4
  5
  6
  $ log 'limit(sort(0::7, -rev), 3, 4)'
  3
  2
  1
  $ log 'last(sort(0::7, rev), 2)'
  6
  7
  $ hg debugrevspec -s 'limit(sort(0::7, rev), 3, 6)'
  * set:
  <baseset+ [6, 7]>
  6
  7
  $ hg debugrevspec -s 'limit(sort(0::7, rev), 3, 9)'
  * set:
  <baseset+ []>
  $ hg debugrevspec -s 'limit(sort(0::7, -rev), 3, 6)'
  * set:
  <baseset- [0, 1]>
  1
  0
  $ hg debugrevspec -s 'limit(sort(0::7, -rev), 3, 9)'
  * set:
  <baseset- []>
  $ hg debugrevspec -s 'limit(0::7, 0)'
  * set:
  <baseset+ []>

 (using spanset)

  $ hg debugrevspec --no-show-revs -s 0:7
  * set:
  <spanset+ 0:8>
  $ log 'limit(0:7, 3, 4)'
  4
  5
  6
  $ log 'limit(7:0, 3, 4)'
  3
  2
  1
  $ log 'limit(0:7, 3, 6)'
  6
  7
  $ log 'limit(7:0, 3, 6)'
  1
  0
  $ log 'last(0:7, 2)'
  6
  7
  $ hg debugrevspec -s 'limit(0:7, 3, 6)'
  * set:
  <spanset+ 6:8>
  6
  7
  $ hg debugrevspec -s 'limit(0:7, 3, 9)'
  * set:
  <spanset+ 8:8>
  $ hg debugrevspec -s 'limit(7:0, 3, 6)'
  * set:
  <spanset- 0:2>
  1
  0
  $ hg debugrevspec -s 'limit(7:0, 3, 9)'
  * set:
  <spanset- 0:0>
  $ hg debugrevspec -s 'limit(0:7, 0)'
  * set:
  <spanset+ 0:0>

Test order of first/last revisions

  $ hg debugrevspec -s 'first(4:0, 3) & 3:'
  * set:
  <filteredset
    <spanset- 2:5>,
    <spanset+ 3:10>>
  4
  3

  $ hg debugrevspec -s '3: & first(4:0, 3)'
  * set:
  <filteredset
    <spanset+ 3:10>,
    <spanset- 2:5>>
  3
  4

  $ hg debugrevspec -s 'last(4:0, 3) & :1'
  * set:
  <filteredset
    <spanset- 0:3>,
    <spanset+ 0:2>>
  1
  0

  $ hg debugrevspec -s ':1 & last(4:0, 3)'
  * set:
  <filteredset
    <spanset+ 0:2>,
    <spanset+ 0:3>>
  0
  1

Test scmutil.revsingle() should return the last revision

  $ hg debugrevspec -s 'last(0::)'
  * set:
  <baseset slice=0:1
    <generatorsetasc->>
  9
  $ hg identify -r '0::' --num
  9

Test matching

  $ log 'matching(6)'
  6
  $ log 'matching(6:7, "phase parents user date branch summary files description substate")'
  6
  7

Testing min and max

max: simple

  $ log 'max(contains(a))'
  5

max: simple on unordered set)

  $ log 'max((4+0+2+5+7) and contains(a))'
  5

max: no result

  $ log 'max(contains(stringthatdoesnotappearanywhere))'

max: no result on unordered set

  $ log 'max((4+0+2+5+7) and contains(stringthatdoesnotappearanywhere))'

min: simple

  $ log 'min(contains(a))'
  0

min: simple on unordered set

  $ log 'min((4+0+2+5+7) and contains(a))'
  0

min: empty

  $ log 'min(contains(stringthatdoesnotappearanywhere))'

min: empty on unordered set

  $ log 'min((4+0+2+5+7) and contains(stringthatdoesnotappearanywhere))'


  $ log 'merge()'
  6
  $ log 'branchpoint()'
  1
  4
  $ log 'modifies(b)'
  4
  $ log 'modifies("path:b")'
  4
  $ log 'modifies("*")'
  4
  6
  $ log 'modifies("set:modified()")'
  4
  $ log 'id(5)'
  2
  $ log 'only(9)'
  8
  9
  $ log 'only(8)'
  8
  $ log 'only(9, 5)'
  2
  4
  8
  9
  $ log 'only(7 + 9, 5 + 2)'
  4
  6
  7
  8
  9

Test empty set input
  $ log 'only(p2())'
  $ log 'only(p1(), p2())'
  0
  1
  2
  4
  8
  9

Test '%' operator

  $ log '9%'
  8
  9
  $ log '9%5'
  2
  4
  8
  9
  $ log '(7 + 9)%(5 + 2)'
  4
  6
  7
  8
  9

Test operand of '%' is optimized recursively (issue4670)

  $ try --optimize '8:9-8%'
  (onlypost
    (minus
      (range
        (symbol '8')
        (symbol '9'))
      (symbol '8')))
  * optimized:
  (func
    (symbol 'only')
    (difference
      (range
        (symbol '8')
        (symbol '9'))
      (symbol '8')))
  * set:
  <baseset+ [8, 9]>
  8
  9
  $ try --optimize '(9)%(5)'
  (only
    (group
      (symbol '9'))
    (group
      (symbol '5')))
  * optimized:
  (func
    (symbol 'only')
    (list
      (symbol '9')
      (symbol '5')))
  * set:
  <baseset+ [2, 4, 8, 9]>
  2
  4
  8
  9

Test the order of operations

  $ log '7 + 9%5 + 2'
  7
  2
  4
  8
  9

Test explicit numeric revision
  $ log 'rev(-2)'
  $ log 'rev(-1)'
  -1
  $ log 'rev(0)'
  0
  $ log 'rev(9)'
  9
  $ log 'rev(10)'
  $ log 'rev(tip)'
  hg: parse error: rev expects a number
  [255]

Test hexadecimal revision
  $ log 'id(2)'
  $ log 'id(5)'
  2
  $ hg --config experimental.revisions.prefixhexnode=yes log --template '{rev}\n' -r 'id(x5)'
  2
  $ hg --config experimental.revisions.prefixhexnode=yes log --template '{rev}\n' -r 'x5'
  2
  $ hg --config experimental.revisions.prefixhexnode=yes log --template '{rev}\n' -r 'id(x)'
  $ hg --config experimental.revisions.prefixhexnode=yes log --template '{rev}\n' -r 'x'
  abort: 00changelog.i@: ambiguous identifier!
  [255]
  $ log 'id(23268)'
  4
  $ log 'id(2785f51eece)'
  0
  $ log 'id(d5d0dcbdc4d9ff5dbb2d336f32f0bb561c1a532c)'
  8
  $ log 'id(d5d0dcbdc4a)'
  $ log 'id(d5d0dcbdc4w)'
  $ log 'id(d5d0dcbdc4d9ff5dbb2d336f32f0bb561c1a532d)'
  $ log 'id(d5d0dcbdc4d9ff5dbb2d336f32f0bb561c1a532q)'
  $ log 'id(1.0)'
  $ log 'id(xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx)'

Test null revision
  $ log '(null)'
  -1
  $ log '(null:0)'
  -1
  0
  $ log '(0:null)'
  0
  -1
  $ log 'null::0'
  -1
  0
  $ log 'null:tip - 0:'
  -1
  $ log 'null: and null::' | head -1
  -1
  $ log 'null: or 0:' | head -2
  -1
  0
  $ log 'ancestors(null)'
  -1
  $ log 'reverse(null:)' | tail -2
  0
  -1
  $ log 'first(null:)'
  -1
  $ log 'min(null:)'
BROKEN: should be '-1'
  $ log 'tip:null and all()' | tail -2
  1
  0

Test working-directory revision
  $ hg debugrevspec 'wdir()'
  2147483647
  $ hg debugrevspec 'wdir()^'
  9
  $ hg up 7
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg debugrevspec 'wdir()^'
  7
  $ hg debugrevspec 'wdir()^0'
  2147483647
  $ hg debugrevspec 'wdir()~3'
  5
  $ hg debugrevspec 'ancestors(wdir())'
  0
  1
  2
  3
  4
  5
  6
  7
  2147483647
  $ hg debugrevspec '0:wdir() & ancestor(wdir())'
  2147483647
  $ hg debugrevspec '0:wdir() & ancestor(.:wdir())'
  4
  $ hg debugrevspec '0:wdir() & ancestor(wdir(), wdir())'
  2147483647
  $ hg debugrevspec '0:wdir() & ancestor(wdir(), tip)'
  4
  $ hg debugrevspec 'null:wdir() & ancestor(wdir(), null)'
  -1
  $ hg debugrevspec 'wdir()~0'
  2147483647
  $ hg debugrevspec 'p1(wdir())'
  7
  $ hg debugrevspec 'p2(wdir())'
  $ hg debugrevspec 'parents(wdir())'
  7
  $ hg debugrevspec 'wdir()^1'
  7
  $ hg debugrevspec 'wdir()^2'
  $ hg debugrevspec 'wdir()^3'
  hg: parse error: ^ expects a number 0, 1, or 2
  [255]
For tests consistency
  $ hg up 9
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg debugrevspec 'tip or wdir()'
  9
  2147483647
  $ hg debugrevspec '0:tip and wdir()'
  $ log '0:wdir()' | tail -3
  8
  9
  2147483647
  $ log 'wdir():0' | head -3
  2147483647
  9
  8
  $ log 'wdir():wdir()'
  2147483647
  $ log '(all() + wdir()) & min(. + wdir())'
  9
  $ log '(all() + wdir()) & max(. + wdir())'
  2147483647
  $ log 'first(wdir() + .)'
  2147483647
  $ log 'last(. + wdir())'
  2147483647

Test working-directory integer revision and node id
(BUG: '0:wdir()' is still needed to populate wdir revision)

  $ hg debugrevspec '0:wdir() & 2147483647'
  2147483647
  $ hg debugrevspec '0:wdir() & rev(2147483647)'
  2147483647
  $ hg debugrevspec '0:wdir() & ffffffffffffffffffffffffffffffffffffffff'
  2147483647
  $ hg debugrevspec '0:wdir() & ffffffffffff'
  2147483647
  $ hg debugrevspec '0:wdir() & id(ffffffffffffffffffffffffffffffffffffffff)'
  2147483647
  $ hg debugrevspec '0:wdir() & id(ffffffffffff)'
  2147483647

  $ cd ..

Test short 'ff...' hash collision
(BUG: '0:wdir()' is still needed to populate wdir revision)

  $ hg init wdir-hashcollision
  $ cd wdir-hashcollision
  $ cat <<EOF >> .hg/hgrc
  > [experimental]
  > evolution.createmarkers=True
  > EOF
  $ echo 0 > a
  $ hg ci -qAm 0
  $ for i in 2463 2961 6726 78127; do
  >   hg up -q 0
  >   echo $i > a
  >   hg ci -qm $i
  > done
  $ hg up -q null
  $ hg log -r '0:wdir()' -T '{rev}:{node} {shortest(node, 3)}\n'
  0:b4e73ffab476aa0ee32ed81ca51e07169844bc6a b4e
  1:fffbae3886c8fbb2114296380d276fd37715d571 fffba
  2:fffb6093b00943f91034b9bdad069402c834e572 fffb6
  3:fff48a9b9de34a4d64120c29548214c67980ade3 fff4
  4:ffff85cff0ff78504fcdc3c0bc10de0c65379249 ffff8
  2147483647:ffffffffffffffffffffffffffffffffffffffff fffff
  $ hg debugobsolete fffbae3886c8fbb2114296380d276fd37715d571
  obsoleted 1 changesets

  $ hg debugrevspec '0:wdir() & fff'
  abort: 00changelog.i@fff: ambiguous identifier!
  [255]
  $ hg debugrevspec '0:wdir() & ffff'
  abort: 00changelog.i@ffff: ambiguous identifier!
  [255]
  $ hg debugrevspec '0:wdir() & fffb'
  abort: 00changelog.i@fffb: ambiguous identifier!
  [255]
BROKEN should be '2' (node lookup uses unfiltered repo)
  $ hg debugrevspec '0:wdir() & id(fffb)'
BROKEN should be '2' (node lookup uses unfiltered repo)
  $ hg debugrevspec '0:wdir() & ffff8'
  4
  $ hg debugrevspec '0:wdir() & fffff'
  2147483647

  $ cd ..

Test branch() with wdir()

  $ cd repo

  $ log '0:wdir() & branch("literal:é")'
  8
  9
  2147483647
  $ log '0:wdir() & branch("re:é")'
  8
  9
  2147483647
  $ log '0:wdir() & branch("re:^a")'
  0
  2
  $ log '0:wdir() & branch(8)'
  8
  9
  2147483647

branch(wdir()) returns all revisions belonging to the working branch. The wdir
itself isn't returned unless it is explicitly populated.

  $ log 'branch(wdir())'
  8
  9
  $ log '0:wdir() & branch(wdir())'
  8
  9
  2147483647

  $ log 'outgoing()'
  8
  9
  $ log 'outgoing("../remote1")'
  8
  9
  $ log 'outgoing("../remote2")'
  3
  5
  6
  7
  9
  $ log 'p1(merge())'
  5
  $ log 'p2(merge())'
  4
  $ log 'parents(merge())'
  4
  5
  $ log 'p1(branchpoint())'
  0
  2
  $ log 'p2(branchpoint())'
  $ log 'parents(branchpoint())'
  0
  2
  $ log 'removes(a)'
  2
  6
  $ log 'roots(all())'
  0
  $ log 'reverse(2 or 3 or 4 or 5)'
  5
  4
  3
  2
  $ log 'reverse(all())'
  9
  8
  7
  6
  5
  4
  3
  2
  1
  0
  $ log 'reverse(all()) & filelog(b)'
  4
  1
  $ log 'rev(5)'
  5
  $ log 'sort(limit(reverse(all()), 3))'
  7
  8
  9
  $ log 'sort(2 or 3 or 4 or 5, date)'
  2
  3
  5
  4
  $ log 'tagged()'
  6
  $ log 'tag()'
  6
  $ log 'tag(1.0)'
  6
  $ log 'tag(tip)'
  9

Test order of revisions in compound expression
----------------------------------------------

The general rule is that only the outermost (= leftmost) predicate can
enforce its ordering requirement. The other predicates should take the
ordering defined by it.

 'A & B' should follow the order of 'A':

  $ log '2:0 & 0::2'
  2
  1
  0

 'head()' combines sets in right order:

  $ log '2:0 & head()'
  2
  1
  0

 'x:y' takes ordering parameter into account:

  $ try -p optimized '3:0 & 0:3 & not 2:1'
  * optimized:
  (difference
    (and
      (range
        (symbol '3')
        (symbol '0'))
      (range
        (symbol '0')
        (symbol '3')))
    (range
      (symbol '2')
      (symbol '1')))
  * set:
  <filteredset
    <filteredset
      <spanset- 0:4>,
      <spanset+ 0:4>>,
    <not
      <spanset+ 1:3>>>
  3
  0

 'a + b', which is optimized to '_list(a b)', should take the ordering of
 the left expression:

  $ try --optimize '2:0 & (0 + 1 + 2)'
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (group
      (or
        (list
          (symbol '0')
          (symbol '1')
          (symbol '2')))))
  * optimized:
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (func
      (symbol '_list')
      (string '0\x001\x002')))
  * set:
  <filteredset
    <spanset- 0:3>,
    <baseset [0, 1, 2]>>
  2
  1
  0

 'A + B' should take the ordering of the left expression:

  $ try --optimize '2:0 & (0:1 + 2)'
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (group
      (or
        (list
          (range
            (symbol '0')
            (symbol '1'))
          (symbol '2')))))
  * optimized:
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (or
      (list
        (range
          (symbol '0')
          (symbol '1'))
        (symbol '2'))))
  * set:
  <filteredset
    <spanset- 0:3>,
    <addset
      <spanset+ 0:2>,
      <baseset [2]>>>
  2
  1
  0

 '_intlist(a b)' should behave like 'a + b':

  $ trylist --optimize '2:0 & %ld' 0 1 2
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (func
      (symbol '_intlist')
      (string '0\x001\x002')))
  * optimized:
  (andsmally
    (range
      (symbol '2')
      (symbol '0'))
    (func
      (symbol '_intlist')
      (string '0\x001\x002')))
  * set:
  <filteredset
    <spanset- 0:3>,
    <baseset+ [0, 1, 2]>>
  2
  1
  0

  $ trylist --optimize '%ld & 2:0' 0 2 1
  (and
    (func
      (symbol '_intlist')
      (string '0\x002\x001'))
    (range
      (symbol '2')
      (symbol '0')))
  * optimized:
  (and
    (func
      (symbol '_intlist')
      (string '0\x002\x001'))
    (range
      (symbol '2')
      (symbol '0')))
  * set:
  <filteredset
    <baseset [0, 2, 1]>,
    <spanset- 0:3>>
  0
  2
  1

 '_hexlist(a b)' should behave like 'a + b':

  $ trylist --optimize --bin '2:0 & %ln' `hg log -T '{node} ' -r0:2`
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (func
      (symbol '_hexlist')
      (string '*'))) (glob)
  * optimized:
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (func
      (symbol '_hexlist')
      (string '*'))) (glob)
  * set:
  <filteredset
    <spanset- 0:3>,
    <baseset [0, 1, 2]>>
  2
  1
  0

  $ trylist --optimize --bin '%ln & 2:0' `hg log -T '{node} ' -r0+2+1`
  (and
    (func
      (symbol '_hexlist')
      (string '*')) (glob)
    (range
      (symbol '2')
      (symbol '0')))
  * optimized:
  (andsmally
    (func
      (symbol '_hexlist')
      (string '*')) (glob)
    (range
      (symbol '2')
      (symbol '0')))
  * set:
  <baseset [0, 2, 1]>
  0
  2
  1

 '_list' should not go through the slow follow-order path if order doesn't
 matter:

  $ try -p optimized '2:0 & not (0 + 1)'
  * optimized:
  (difference
    (range
      (symbol '2')
      (symbol '0'))
    (func
      (symbol '_list')
      (string '0\x001')))
  * set:
  <filteredset
    <spanset- 0:3>,
    <not
      <baseset [0, 1]>>>
  2

  $ try -p optimized '2:0 & not (0:2 & (0 + 1))'
  * optimized:
  (difference
    (range
      (symbol '2')
      (symbol '0'))
    (and
      (range
        (symbol '0')
        (symbol '2'))
      (func
        (symbol '_list')
        (string '0\x001'))))
  * set:
  <filteredset
    <spanset- 0:3>,
    <not
      <baseset [0, 1]>>>
  2

 because 'present()' does nothing other than suppressing an error, the
 ordering requirement should be forwarded to the nested expression

  $ try -p optimized 'present(2 + 0 + 1)'
  * optimized:
  (func
    (symbol 'present')
    (func
      (symbol '_list')
      (string '2\x000\x001')))
  * set:
  <baseset [2, 0, 1]>
  2
  0
  1

  $ try --optimize '2:0 & present(0 + 1 + 2)'
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (func
      (symbol 'present')
      (or
        (list
          (symbol '0')
          (symbol '1')
          (symbol '2')))))
  * optimized:
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (func
      (symbol 'present')
      (func
        (symbol '_list')
        (string '0\x001\x002'))))
  * set:
  <filteredset
    <spanset- 0:3>,
    <baseset [0, 1, 2]>>
  2
  1
  0

 'reverse()' should take effect only if it is the outermost expression:

  $ try --optimize '0:2 & reverse(all())'
  (and
    (range
      (symbol '0')
      (symbol '2'))
    (func
      (symbol 'reverse')
      (func
        (symbol 'all')
        None)))
  * optimized:
  (and
    (range
      (symbol '0')
      (symbol '2'))
    (func
      (symbol 'reverse')
      (func
        (symbol 'all')
        None)))
  * set:
  <filteredset
    <spanset+ 0:3>,
    <spanset+ 0:10>>
  0
  1
  2

 'sort()' should take effect only if it is the outermost expression:

  $ try --optimize '0:2 & sort(all(), -rev)'
  (and
    (range
      (symbol '0')
      (symbol '2'))
    (func
      (symbol 'sort')
      (list
        (func
          (symbol 'all')
          None)
        (negate
          (symbol 'rev')))))
  * optimized:
  (and
    (range
      (symbol '0')
      (symbol '2'))
    (func
      (symbol 'sort')
      (list
        (func
          (symbol 'all')
          None)
        (string '-rev'))))
  * set:
  <filteredset
    <spanset+ 0:3>,
    <spanset+ 0:10>>
  0
  1
  2

 invalid argument passed to noop sort():

  $ log '0:2 & sort()'
  hg: parse error: sort requires one or two arguments
  [255]
  $ log '0:2 & sort(all(), -invalid)'
  hg: parse error: unknown sort key '-invalid'
  [255]

 for 'A & f(B)', 'B' should not be affected by the order of 'A':

  $ try --optimize '2:0 & first(1 + 0 + 2)'
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (func
      (symbol 'first')
      (or
        (list
          (symbol '1')
          (symbol '0')
          (symbol '2')))))
  * optimized:
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (func
      (symbol 'first')
      (func
        (symbol '_list')
        (string '1\x000\x002'))))
  * set:
  <filteredset
    <baseset [1]>,
    <spanset- 0:3>>
  1

  $ try --optimize '2:0 & not last(0 + 2 + 1)'
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (not
      (func
        (symbol 'last')
        (or
          (list
            (symbol '0')
            (symbol '2')
            (symbol '1'))))))
  * optimized:
  (difference
    (range
      (symbol '2')
      (symbol '0'))
    (func
      (symbol 'last')
      (func
        (symbol '_list')
        (string '0\x002\x001'))))
  * set:
  <filteredset
    <spanset- 0:3>,
    <not
      <baseset [1]>>>
  2
  0

 for 'A & (op)(B)', 'B' should not be affected by the order of 'A':

  $ try --optimize '2:0 & (1 + 0 + 2):(0 + 2 + 1)'
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (range
      (group
        (or
          (list
            (symbol '1')
            (symbol '0')
            (symbol '2'))))
      (group
        (or
          (list
            (symbol '0')
            (symbol '2')
            (symbol '1'))))))
  * optimized:
  (and
    (range
      (symbol '2')
      (symbol '0'))
    (range
      (func
        (symbol '_list')
        (string '1\x000\x002'))
      (func
        (symbol '_list')
        (string '0\x002\x001'))))
  * set:
  <filteredset
    <spanset- 0:3>,
    <baseset [1]>>
  1

 'A & B' can be rewritten as 'flipand(B, A)' by weight.

  $ try --optimize 'contains("glob:*") & (2 + 0 + 1)'
  (and
    (func
      (symbol 'contains')
      (string 'glob:*'))
    (group
      (or
        (list
          (symbol '2')
          (symbol '0')
          (symbol '1')))))
  * optimized:
  (andsmally
    (func
      (symbol 'contains')
      (string 'glob:*'))
    (func
      (symbol '_list')
      (string '2\x000\x001')))
  * set:
  <filteredset
    <baseset+ [0, 1, 2]>,
    <contains 'glob:*'>>
  0
  1
  2

 and in this example, 'A & B' is rewritten as 'B & A', but 'A' overrides
 the order appropriately:

  $ try --optimize 'reverse(contains("glob:*")) & (0 + 2 + 1)'
  (and
    (func
      (symbol 'reverse')
      (func
        (symbol 'contains')
        (string 'glob:*')))
    (group
      (or
        (list
          (symbol '0')
          (symbol '2')
          (symbol '1')))))
  * optimized:
  (andsmally
    (func
      (symbol 'reverse')
      (func
        (symbol 'contains')
        (string 'glob:*')))
    (func
      (symbol '_list')
      (string '0\x002\x001')))
  * set:
  <filteredset
    <baseset- [0, 1, 2]>,
    <contains 'glob:*'>>
  2
  1
  0

test sort revset
--------------------------------------------

test when adding two unordered revsets

  $ log 'sort(keyword(issue) or modifies(b))'
  4
  6

test when sorting a reversed collection in the same way it is

  $ log 'sort(reverse(all()), -rev)'
  9
  8
  7
  6
  5
  4
  3
  2
  1
  0

test when sorting a reversed collection

  $ log 'sort(reverse(all()), rev)'
  0
  1
  2
  3
  4
  5
  6
  7
  8
  9


test sorting two sorted collections in different orders

  $ log 'sort(outgoing() or reverse(removes(a)), rev)'
  2
  6
  8
  9

test sorting two sorted collections in different orders backwards

  $ log 'sort(outgoing() or reverse(removes(a)), -rev)'
  9
  8
  6
  2

test empty sort key which is noop

  $ log 'sort(0 + 2 + 1, "")'
  0
  2
  1

test invalid sort keys

  $ log 'sort(all(), -invalid)'
  hg: parse error: unknown sort key '-invalid'
  [255]

  $ cd ..

test sorting by multiple keys including variable-length strings

  $ hg init sorting
  $ cd sorting
  $ cat <<EOF >> .hg/hgrc
  > [ui]
  > logtemplate = '{rev} {branch|p5}{desc|p5}{author|p5}{date|hgdate}\n'
  > [templatealias]
  > p5(s) = pad(s, 5)
  > EOF
  $ hg branch -qf b12
  $ hg ci -m m111 -u u112 -d '111 10800'
  $ hg branch -qf b11
  $ hg ci -m m12 -u u111 -d '112 7200'
  $ hg branch -qf b111
  $ hg ci -m m11 -u u12 -d '111 3600'
  $ hg branch -qf b112
  $ hg ci -m m111 -u u11 -d '120 0'
  $ hg branch -qf b111
  $ hg ci -m m112 -u u111 -d '110 14400'
  created new head

 compare revisions (has fast path):

  $ hg log -r 'sort(all(), rev)'
  0 b12  m111 u112 111 10800
  1 b11  m12  u111 112 7200
  2 b111 m11  u12  111 3600
  3 b112 m111 u11  120 0
  4 b111 m112 u111 110 14400

  $ hg log -r 'sort(all(), -rev)'
  4 b111 m112 u111 110 14400
  3 b112 m111 u11  120 0
  2 b111 m11  u12  111 3600
  1 b11  m12  u111 112 7200
  0 b12  m111 u112 111 10800

 compare variable-length strings (issue5218):

  $ hg log -r 'sort(all(), branch)'
  1 b11  m12  u111 112 7200
  2 b111 m11  u12  111 3600
  4 b111 m112 u111 110 14400
  3 b112 m111 u11  120 0
  0 b12  m111 u112 111 10800

  $ hg log -r 'sort(all(), -branch)'
  0 b12  m111 u112 111 10800
  3 b112 m111 u11  120 0
  2 b111 m11  u12  111 3600
  4 b111 m112 u111 110 14400
  1 b11  m12  u111 112 7200

  $ hg log -r 'sort(all(), desc)'
  2 b111 m11  u12  111 3600
  0 b12  m111 u112 111 10800
  3 b112 m111 u11  120 0
  4 b111 m112 u111 110 14400
  1 b11  m12  u111 112 7200

  $ hg log -r 'sort(all(), -desc)'
  1 b11  m12  u111 112 7200
  4 b111 m112 u111 110 14400
  0 b12  m111 u112 111 10800
  3 b112 m111 u11  120 0
  2 b111 m11  u12  111 3600

  $ hg log -r 'sort(all(), user)'
  3 b112 m111 u11  120 0
  1 b11  m12  u111 112 7200
  4 b111 m112 u111 110 14400
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600

  $ hg log -r 'sort(all(), -user)'
  2 b111 m11  u12  111 3600
  0 b12  m111 u112 111 10800
  1 b11  m12  u111 112 7200
  4 b111 m112 u111 110 14400
  3 b112 m111 u11  120 0

 compare dates (tz offset should have no effect):

  $ hg log -r 'sort(all(), date)'
  4 b111 m112 u111 110 14400
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600
  1 b11  m12  u111 112 7200
  3 b112 m111 u11  120 0

  $ hg log -r 'sort(all(), -date)'
  3 b112 m111 u11  120 0
  1 b11  m12  u111 112 7200
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600
  4 b111 m112 u111 110 14400

 be aware that 'sort(x, -k)' is not exactly the same as 'reverse(sort(x, k))'
 because '-k' reverses the comparison, not the list itself:

  $ hg log -r 'sort(0 + 2, date)'
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600

  $ hg log -r 'sort(0 + 2, -date)'
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600

  $ hg log -r 'reverse(sort(0 + 2, date))'
  2 b111 m11  u12  111 3600
  0 b12  m111 u112 111 10800

 sort by multiple keys:

  $ hg log -r 'sort(all(), "branch -rev")'
  1 b11  m12  u111 112 7200
  4 b111 m112 u111 110 14400
  2 b111 m11  u12  111 3600
  3 b112 m111 u11  120 0
  0 b12  m111 u112 111 10800

  $ hg log -r 'sort(all(), "-desc -date")'
  1 b11  m12  u111 112 7200
  4 b111 m112 u111 110 14400
  3 b112 m111 u11  120 0
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600

  $ hg log -r 'sort(all(), "user -branch date rev")'
  3 b112 m111 u11  120 0
  4 b111 m112 u111 110 14400
  1 b11  m12  u111 112 7200
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600

 toposort prioritises graph branches

  $ hg up 2
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ touch a
  $ hg addremove
  adding a
  $ hg ci -m 't1' -u 'tu' -d '130 0'
  created new head
  $ echo 'a' >> a
  $ hg ci -m 't2' -u 'tu' -d '130 0'
  $ hg book book1
  $ hg up 4
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (leaving bookmark book1)
  $ touch a
  $ hg addremove
  adding a
  $ hg ci -m 't3' -u 'tu' -d '130 0'

  $ hg log -r 'sort(all(), topo)'
  7 b111 t3   tu   130 0
  4 b111 m112 u111 110 14400
  3 b112 m111 u11  120 0
  6 b111 t2   tu   130 0
  5 b111 t1   tu   130 0
  2 b111 m11  u12  111 3600
  1 b11  m12  u111 112 7200
  0 b12  m111 u112 111 10800

  $ hg log -r 'sort(all(), -topo)'
  0 b12  m111 u112 111 10800
  1 b11  m12  u111 112 7200
  2 b111 m11  u12  111 3600
  5 b111 t1   tu   130 0
  6 b111 t2   tu   130 0
  3 b112 m111 u11  120 0
  4 b111 m112 u111 110 14400
  7 b111 t3   tu   130 0

  $ hg log -r 'sort(all(), topo, topo.firstbranch=book1)'
  6 b111 t2   tu   130 0
  5 b111 t1   tu   130 0
  7 b111 t3   tu   130 0
  4 b111 m112 u111 110 14400
  3 b112 m111 u11  120 0
  2 b111 m11  u12  111 3600
  1 b11  m12  u111 112 7200
  0 b12  m111 u112 111 10800

topographical sorting can't be combined with other sort keys, and you can't
use the topo.firstbranch option when topo sort is not active:

  $ hg log -r 'sort(all(), "topo user")'
  hg: parse error: topo sort order cannot be combined with other sort keys
  [255]

  $ hg log -r 'sort(all(), user, topo.firstbranch=book1)'
  hg: parse error: topo.firstbranch can only be used when using the topo sort key
  [255]

topo.firstbranch should accept any kind of expressions:

  $ hg log -r 'sort(0, topo, topo.firstbranch=(book1))'
  0 b12  m111 u112 111 10800

  $ cd ..
  $ cd repo

test multiline revset with errors

  $ echo > multiline-revset
  $ echo '. +' >> multiline-revset
  $ echo '.^ +' >> multiline-revset
  $ hg log -r "`cat multiline-revset`"
  hg: parse error at 9: not a prefix: end
  ( . + .^ +
            ^ here)
  [255]
  $ hg debugrevspec -v 'revset(first(rev(0)))' -p all
  * parsed:
  (func
    (symbol 'revset')
    (func
      (symbol 'first')
      (func
        (symbol 'rev')
        (symbol '0'))))
  * expanded:
  (func
    (symbol 'revset')
    (func
      (symbol 'first')
      (func
        (symbol 'rev')
        (symbol '0'))))
  * concatenated:
  (func
    (symbol 'revset')
    (func
      (symbol 'first')
      (func
        (symbol 'rev')
        (symbol '0'))))
  * analyzed:
  (func
    (symbol 'first')
    (func
      (symbol 'rev')
      (symbol '0')))
  * optimized:
  (func
    (symbol 'first')
    (func
      (symbol 'rev')
      (symbol '0')))
  * set:
  <baseset+ [0]>
  0