tests/test-grep.t

filelog: wrap revlog instead of inheriting it (API)

The revlog base class exposes a ton of methods. Inheriting the
revlog class for filelog will make it difficult to expose a
clean interface. There will be abstraction violations.

This commit breaks the inheritance of revlog by the filelog
class. Filelog instances now contain a reference to a revlog
instance. Various properties and methods are now proxied to
that instance.

There is precedence for doing this: manifestlog does something
similar. Although, manifestlog has a cleaner interface than
filelog. We'll get there with filelog...

The new filelog class exposes a handful of extra properties and
methods that aren't part of the declared filelog interface.
Every extra item was added in order to get a test to pass. The
set of tests that failed without these extra proxies has
significant overlap with the set of tests that don't work with
the simple store repo. There should be no surprise there.

Hopefully the hardest part about this commit to review are the
changes to bundlerepo and unionrepo. Both repository types
define a custom revlog or revlog-like class and then have a
custom filelog that inherits from both filelog and their custom
revlog. This code has been changed so the filelog types don't
inherit from revlog. Instead, they replace the revlog instance
on the created filelog. This is super hacky. I plan to fix this
in a future commit by parameterizing filelog.__init__.

Because Python function call overhead is a thing, this change
could impact performance by introducing a nearly empty proxy
function for various methods and properties. I would gladly
measure the performance impact of it, but I'm not sure what
operations have tight loops over filelog attribute lookups
or function calls. I know some of the DAG traversal code can
be sensitive about the performance of e.g. parentrevs(). However,
many of these functions are implemented on the revlog class and
therefore have direct access to self.parentrevs() and aren't
going through a proxy.

.. api::

   filelog.filelog is now a standalone class and doesn't inherit
   from revlog. Instead, it wraps a revlog instance at self._revlog.
   This change was made in an attempt to formalize storage APIs and
   prevent revlog implementation details leaking through to callers.

Differential Revision: https://phab.mercurial-scm.org/D3154

  $ hg init t
  $ cd t
  $ echo import > port
  $ hg add port
  $ hg commit -m 0 -u spam -d '0 0'
  $ echo export >> port
  $ hg commit -m 1 -u eggs -d '1 0'
  $ echo export > port
  $ echo vaportight >> port
  $ echo 'import/export' >> port
  $ hg commit -m 2 -u spam -d '2 0'
  $ echo 'import/export' >> port
  $ hg commit -m 3 -u eggs -d '3 0'
  $ head -n 3 port > port1
  $ mv port1 port
  $ hg commit -m 4 -u spam -d '4 0'

pattern error

  $ hg grep '**test**'
  grep: invalid match pattern: nothing to repeat
  [1]

simple

  $ hg grep '.*'
  port:4:export
  port:4:vaportight
  port:4:import/export
  $ hg grep port port
  port:4:export
  port:4:vaportight
  port:4:import/export

simple with color

  $ hg --config extensions.color= grep --config color.mode=ansi \
  >     --color=always port port
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;32m4\x1b[0m\x1b[0;36m:\x1b[0mex\x1b[0;31;1mport\x1b[0m (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;32m4\x1b[0m\x1b[0;36m:\x1b[0mva\x1b[0;31;1mport\x1b[0might (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;32m4\x1b[0m\x1b[0;36m:\x1b[0mim\x1b[0;31;1mport\x1b[0m/ex\x1b[0;31;1mport\x1b[0m (esc)

simple templated

  $ hg grep port \
  > -T '{file}:{rev}:{node|short}:{texts % "{if(matched, text|upper, text)}"}\n'
  port:4:914fa752cdea:exPORT
  port:4:914fa752cdea:vaPORTight
  port:4:914fa752cdea:imPORT/exPORT

simple JSON (no "change" field)

  $ hg grep -Tjson port
  [
   {
    "date": [4.0, 0],
    "file": "port",
    "line_number": 1,
    "node": "914fa752cdea87777ac1a8d5c858b0c736218f6c",
    "rev": 4,
    "texts": [{"matched": false, "text": "ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "date": [4.0, 0],
    "file": "port",
    "line_number": 2,
    "node": "914fa752cdea87777ac1a8d5c858b0c736218f6c",
    "rev": 4,
    "texts": [{"matched": false, "text": "va"}, {"matched": true, "text": "port"}, {"matched": false, "text": "ight"}],
    "user": "spam"
   },
   {
    "date": [4.0, 0],
    "file": "port",
    "line_number": 3,
    "node": "914fa752cdea87777ac1a8d5c858b0c736218f6c",
    "rev": 4,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}, {"matched": false, "text": "/ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   }
  ]

simple JSON without matching lines

  $ hg grep -Tjson -l port
  [
   {
    "date": [4.0, 0],
    "file": "port",
    "line_number": 1,
    "node": "914fa752cdea87777ac1a8d5c858b0c736218f6c",
    "rev": 4,
    "user": "spam"
   }
  ]

all

  $ hg grep --traceback --all -nu port port
  port:4:4:-:spam:import/export
  port:3:4:+:eggs:import/export
  port:2:1:-:spam:import
  port:2:2:-:spam:export
  port:2:1:+:spam:export
  port:2:2:+:spam:vaportight
  port:2:3:+:spam:import/export
  port:1:2:+:eggs:export
  port:0:1:+:spam:import

all JSON

  $ hg grep --all -Tjson port port
  [
   {
    "change": "-",
    "date": [4.0, 0],
    "file": "port",
    "line_number": 4,
    "node": "914fa752cdea87777ac1a8d5c858b0c736218f6c",
    "rev": 4,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}, {"matched": false, "text": "/ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "change": "+",
    "date": [3.0, 0],
    "file": "port",
    "line_number": 4,
    "node": "95040cfd017d658c536071c6290230a613c4c2a6",
    "rev": 3,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}, {"matched": false, "text": "/ex"}, {"matched": true, "text": "port"}],
    "user": "eggs"
   },
   {
    "change": "-",
    "date": [2.0, 0],
    "file": "port",
    "line_number": 1,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "rev": 2,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "change": "-",
    "date": [2.0, 0],
    "file": "port",
    "line_number": 2,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "rev": 2,
    "texts": [{"matched": false, "text": "ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "change": "+",
    "date": [2.0, 0],
    "file": "port",
    "line_number": 1,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "rev": 2,
    "texts": [{"matched": false, "text": "ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "change": "+",
    "date": [2.0, 0],
    "file": "port",
    "line_number": 2,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "rev": 2,
    "texts": [{"matched": false, "text": "va"}, {"matched": true, "text": "port"}, {"matched": false, "text": "ight"}],
    "user": "spam"
   },
   {
    "change": "+",
    "date": [2.0, 0],
    "file": "port",
    "line_number": 3,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "rev": 2,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}, {"matched": false, "text": "/ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "change": "+",
    "date": [1.0, 0],
    "file": "port",
    "line_number": 2,
    "node": "8b20f75c158513ff5ac80bd0e5219bfb6f0eb587",
    "rev": 1,
    "texts": [{"matched": false, "text": "ex"}, {"matched": true, "text": "port"}],
    "user": "eggs"
   },
   {
    "change": "+",
    "date": [0.0, 0],
    "file": "port",
    "line_number": 1,
    "node": "f31323c9217050ba245ee8b537c713ec2e8ab226",
    "rev": 0,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}],
    "user": "spam"
   }
  ]

other

  $ hg grep -l port port
  port:4
  $ hg grep import port
  port:4:import/export

  $ hg cp port port2
  $ hg commit -m 4 -u spam -d '5 0'

follow

  $ hg grep --traceback -f 'import\n\Z' port2
  port:0:import
  
  $ echo deport >> port2
  $ hg commit -m 5 -u eggs -d '6 0'
  $ hg grep -f --all -nu port port2
  port2:6:4:+:eggs:deport
  port:4:4:-:spam:import/export
  port:3:4:+:eggs:import/export
  port:2:1:-:spam:import
  port:2:2:-:spam:export
  port:2:1:+:spam:export
  port:2:2:+:spam:vaportight
  port:2:3:+:spam:import/export
  port:1:2:+:eggs:export
  port:0:1:+:spam:import

  $ hg up -q null
  $ hg grep -f port
  [1]

Test wdir
(at least, this shouldn't crash)

  $ hg up -q
  $ echo wport >> port2
  $ hg stat
  M port2
  $ hg grep -r 'wdir()' port
  abort: working directory revision cannot be specified
  [255]

  $ cd ..
  $ hg init t2
  $ cd t2
  $ hg grep foobar foo
  [1]
  $ hg grep foobar
  [1]
  $ echo blue >> color
  $ echo black >> color
  $ hg add color
  $ hg ci -m 0
  $ echo orange >> color
  $ hg ci -m 1
  $ echo black > color
  $ hg ci -m 2
  $ echo orange >> color
  $ echo blue >> color
  $ hg ci -m 3
  $ hg grep orange
  color:3:orange
  $ hg grep --all orange
  color:3:+:orange
  color:2:-:orange
  color:1:+:orange

test substring match: '^' should only match at the beginning

  $ hg grep '^.' --config extensions.color= --color debug
  [grep.filename|color][grep.sep|:][grep.rev|3][grep.sep|:][grep.match|b]lack
  [grep.filename|color][grep.sep|:][grep.rev|3][grep.sep|:][grep.match|o]range
  [grep.filename|color][grep.sep|:][grep.rev|3][grep.sep|:][grep.match|b]lue

match in last "line" without newline

  $ $PYTHON -c 'fp = open("noeol", "wb"); fp.write(b"no infinite loop"); fp.close();'
  $ hg ci -Amnoeol
  adding noeol
  $ hg grep loop
  noeol:4:no infinite loop

  $ cd ..

Issue685: traceback in grep -r after rename

Got a traceback when using grep on a single
revision with renamed files.

  $ hg init issue685
  $ cd issue685
  $ echo octarine > color
  $ hg ci -Amcolor
  adding color
  $ hg rename color colour
  $ hg ci -Am rename
  $ hg grep octarine
  colour:1:octarine
  color:0:octarine

Used to crash here

  $ hg grep -r 1 octarine
  colour:1:octarine
  $ cd ..


Issue337: test that grep follows parent-child relationships instead
of just using revision numbers.

  $ hg init issue337
  $ cd issue337

  $ echo white > color
  $ hg commit -A -m "0 white"
  adding color

  $ echo red > color
  $ hg commit -A -m "1 red"

  $ hg update 0
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo black > color
  $ hg commit -A -m "2 black"
  created new head

  $ hg update --clean 1
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo blue > color
  $ hg commit -A -m "3 blue"

  $ hg grep --all red
  color:3:-:red
  color:1:+:red

Issue3885: test that changing revision order does not alter the
revisions printed, just their order.

  $ hg grep --all red -r "all()"
  color:1:+:red
  color:3:-:red

  $ hg grep --all red -r "reverse(all())"
  color:3:-:red
  color:1:+:red

  $ cd ..

  $ hg init a
  $ cd a
  $ cp "$TESTDIR/binfile.bin" .
  $ hg add binfile.bin
  $ hg ci -m 'add binfile.bin'
  $ hg grep "MaCam" --all
  binfile.bin:0:+: Binary file matches

  $ cd ..