view tests/test-status.t @ 48083:bf8837e3d7ce

dirstate: Remove the flat Rust DirstateMap implementation Before this changeset we had two Rust implementations of `DirstateMap`. This removes the "flat" DirstateMap so that the "tree" DirstateMap is always used when Rust enabled. This simplifies the code a lot, and will enable (in the next changeset) further removal of a trait abstraction. This is a performance regression when: * Rust is enabled, and * The repository uses the legacy dirstate-v1 file format, and * For `hg status`, unknown files are not listed (such as with `-mard`) The regression is about 100 milliseconds for `hg status -mard` on a semi-large repository (mozilla-central), from ~320ms to ~420ms. We deem this to be small enough to be worth it. The new dirstate-v2 is still experimental at this point, but we aim to stabilize it (though not yet enable it by default for new repositories) in Mercurial 6.0. Eventually, upgrating repositories to dirsate-v2 will eliminate this regression (and enable other performance improvements). # Background The flat DirstateMap was introduced with the first Rust implementation of the status algorithm. It works similarly to the previous Python + C one, with a single `HashMap` that associates file paths to a `DirstateEntry` (where Python has a dict). We later added the tree DirstateMap where the root of the tree contains nodes for files and directories that are directly at the root of the repository, and nodes for directories can contain child nodes representing the files and directly that *they* contain directly. The shape of this tree mirrors that of the working directory in the filesystem. This enables the status algorithm to traverse this tree in tandem with traversing the filesystem tree, which in turns enables a more efficient algorithm. Furthermore, the new dirstate-v2 file format is also based on a tree of the same shape. The tree DirstateMap can access a dirstate-v2 file without parsing it: binary data in a single large (possibly memory-mapped) bytes buffer is traversed on demand. This allows `DirstateMap` creation to take `O(1)` time. (Mutation works by creating new in-memory nodes with copy-on-write semantics, and serialization is append-mostly.) The tradeoff is that for "legacy" repositories that use the dirstate-v1 file format, parsing that file into a tree DirstateMap takes more time. Profiling shows that this time is dominated by `HashMap`. For a dirstate containing `F` files with an average `D` directory depth, the flat DirstateMap does parsing in `O(F)` number of HashMap operations but the tree DirstateMap in `O(F × D)` operations, since each node has its own HashMap containing its child nodes. This slower costs ~140ms on an old snapshot of mozilla-central, and ~80ms on an old snapshot of the Netbeans repository. The status algorithm is faster, but with `-mard` (when not listing unknown files) it is typically not faster *enough* to compensate the slower parsing. Both Rust implementations are always faster than the Python + C implementation # Benchmark results All benchmarks are run on changeset 98c0408324e6, with repositories that use the dirstate-v1 file format, on a server with 4 CPU cores and 4 CPU threads (no HyperThreading). `hg status` benchmarks show wall clock times of the entire command as the average and standard deviation of serveral runs, collected by https://github.com/sharkdp/hyperfine and reformated. Parsing benchmarks are wall clock time of the Rust function that converts a bytes buffer of the dirstate file into the `DirstateMap` data structure as used by the status algorithm. A single run each, collected by running `hg status` this environment variable: RUST_LOG=hg::dirstate::dirstate_map=trace,hg::dirstate_tree::dirstate_map=trace Benchmark 1: Rust flat DirstateMap → Rust tree DirstateMap hg status mozilla-clean 562.3 ms ± 2.0 ms → 462.5 ms ± 0.6 ms 1.22 ± 0.00 times faster mozilla-dirty 859.6 ms ± 2.2 ms → 719.5 ms ± 3.2 ms 1.19 ± 0.01 times faster mozilla-ignored 558.2 ms ± 3.0 ms → 457.9 ms ± 2.9 ms 1.22 ± 0.01 times faster mozilla-unknowns 859.4 ms ± 5.7 ms → 716.0 ms ± 4.7 ms 1.20 ± 0.01 times faster netbeans-clean 336.5 ms ± 0.9 ms → 339.5 ms ± 0.4 ms 0.99 ± 0.00 times faster netbeans-dirty 491.4 ms ± 1.6 ms → 475.1 ms ± 1.2 ms 1.03 ± 0.00 times faster netbeans-ignored 343.7 ms ± 1.0 ms → 347.8 ms ± 0.4 ms 0.99 ± 0.00 times faster netbeans-unknowns 484.3 ms ± 1.0 ms → 466.0 ms ± 1.2 ms 1.04 ± 0.00 times faster hg status -mard mozilla-clean 317.3 ms ± 0.6 ms → 422.5 ms ± 1.2 ms 0.75 ± 0.00 times faster mozilla-dirty 315.4 ms ± 0.6 ms → 417.7 ms ± 1.1 ms 0.76 ± 0.00 times faster mozilla-ignored 314.6 ms ± 0.6 ms → 417.4 ms ± 1.0 ms 0.75 ± 0.00 times faster mozilla-unknowns 312.9 ms ± 0.9 ms → 417.3 ms ± 1.6 ms 0.75 ± 0.00 times faster netbeans-clean 212.0 ms ± 0.6 ms → 283.6 ms ± 0.8 ms 0.75 ± 0.00 times faster netbeans-dirty 211.4 ms ± 1.0 ms → 283.4 ms ± 1.6 ms 0.75 ± 0.01 times faster netbeans-ignored 211.4 ms ± 0.9 ms → 283.9 ms ± 0.8 ms 0.74 ± 0.01 times faster netbeans-unknowns 211.1 ms ± 0.6 ms → 283.4 ms ± 1.0 ms 0.74 ± 0.00 times faster Parsing mozilla-clean 38.4ms → 177.6ms mozilla-dirty 38.8ms → 177.0ms mozilla-ignored 38.8ms → 178.0ms mozilla-unknowns 38.7ms → 176.9ms netbeans-clean 16.5ms → 97.3ms netbeans-dirty 16.5ms → 98.4ms netbeans-ignored 16.9ms → 97.4ms netbeans-unknowns 16.9ms → 96.3ms Benchmark 2: Python + C dirstatemap → Rust tree DirstateMap hg status mozilla-clean 1261.0 ms ± 3.6 ms → 461.1 ms ± 0.5 ms 2.73 ± 0.00 times faster mozilla-dirty 2293.4 ms ± 9.1 ms → 719.6 ms ± 3.6 ms 3.19 ± 0.01 times faster mozilla-ignored 1240.4 ms ± 2.3 ms → 457.7 ms ± 1.9 ms 2.71 ± 0.00 times faster mozilla-unknowns 2283.3 ms ± 9.0 ms → 719.7 ms ± 3.8 ms 3.17 ± 0.01 times faster netbeans-clean 879.7 ms ± 3.5 ms → 339.9 ms ± 0.5 ms 2.59 ± 0.00 times faster netbeans-dirty 1257.3 ms ± 4.7 ms → 474.6 ms ± 1.6 ms 2.65 ± 0.01 times faster netbeans-ignored 943.9 ms ± 1.9 ms → 347.3 ms ± 1.1 ms 2.72 ± 0.00 times faster netbeans-unknowns 1188.1 ms ± 5.0 ms → 465.2 ms ± 2.3 ms 2.55 ± 0.01 times faster hg status -mard mozilla-clean 903.2 ms ± 3.6 ms → 423.4 ms ± 2.2 ms 2.13 ± 0.01 times faster mozilla-dirty 884.6 ms ± 4.5 ms → 417.3 ms ± 1.4 ms 2.12 ± 0.01 times faster mozilla-ignored 881.9 ms ± 1.3 ms → 417.3 ms ± 0.8 ms 2.11 ± 0.00 times faster mozilla-unknowns 878.5 ms ± 1.9 ms → 416.4 ms ± 0.9 ms 2.11 ± 0.00 times faster netbeans-clean 434.9 ms ± 1.8 ms → 284.0 ms ± 0.8 ms 1.53 ± 0.01 times faster netbeans-dirty 434.1 ms ± 0.8 ms → 283.1 ms ± 0.8 ms 1.53 ± 0.00 times faster netbeans-ignored 431.7 ms ± 1.1 ms → 283.6 ms ± 1.8 ms 1.52 ± 0.01 times faster netbeans-unknowns 433.0 ms ± 1.3 ms → 283.5 ms ± 0.7 ms 1.53 ± 0.00 times faster Differential Revision: https://phab.mercurial-scm.org/D11516
author Simon Sapin <simon.sapin@octobus.net>
date Mon, 27 Sep 2021 12:09:15 +0200
parents 284a20269a97
children b4f83c9e7905
line wrap: on
line source

#testcases dirstate-v1 dirstate-v2

#if no-rust
  $ hg init repo0 --config format.exp-dirstate-v2=1
  abort: dirstate v2 format requested by config but not supported (requires Rust extensions)
  [255]
#endif

#if dirstate-v2
#require rust
  $ echo '[format]' >> $HGRCPATH
  $ echo 'exp-dirstate-v2=1' >> $HGRCPATH
#endif

  $ hg init repo1
  $ cd repo1
  $ mkdir a b a/1 b/1 b/2
  $ touch in_root a/in_a b/in_b a/1/in_a_1 b/1/in_b_1 b/2/in_b_2

hg status in repo root:

  $ hg status
  ? a/1/in_a_1
  ? a/in_a
  ? b/1/in_b_1
  ? b/2/in_b_2
  ? b/in_b
  ? in_root

hg status . in repo root:

  $ hg status .
  ? a/1/in_a_1
  ? a/in_a
  ? b/1/in_b_1
  ? b/2/in_b_2
  ? b/in_b
  ? in_root

  $ hg status --cwd a
  ? a/1/in_a_1
  ? a/in_a
  ? b/1/in_b_1
  ? b/2/in_b_2
  ? b/in_b
  ? in_root
  $ hg status --cwd a .
  ? 1/in_a_1
  ? in_a
  $ hg status --cwd a ..
  ? 1/in_a_1
  ? in_a
  ? ../b/1/in_b_1
  ? ../b/2/in_b_2
  ? ../b/in_b
  ? ../in_root

  $ hg status --cwd b
  ? a/1/in_a_1
  ? a/in_a
  ? b/1/in_b_1
  ? b/2/in_b_2
  ? b/in_b
  ? in_root
  $ hg status --cwd b .
  ? 1/in_b_1
  ? 2/in_b_2
  ? in_b
  $ hg status --cwd b ..
  ? ../a/1/in_a_1
  ? ../a/in_a
  ? 1/in_b_1
  ? 2/in_b_2
  ? in_b
  ? ../in_root

  $ hg status --cwd a/1
  ? a/1/in_a_1
  ? a/in_a
  ? b/1/in_b_1
  ? b/2/in_b_2
  ? b/in_b
  ? in_root
  $ hg status --cwd a/1 .
  ? in_a_1
  $ hg status --cwd a/1 ..
  ? in_a_1
  ? ../in_a

  $ hg status --cwd b/1
  ? a/1/in_a_1
  ? a/in_a
  ? b/1/in_b_1
  ? b/2/in_b_2
  ? b/in_b
  ? in_root
  $ hg status --cwd b/1 .
  ? in_b_1
  $ hg status --cwd b/1 ..
  ? in_b_1
  ? ../2/in_b_2
  ? ../in_b

  $ hg status --cwd b/2
  ? a/1/in_a_1
  ? a/in_a
  ? b/1/in_b_1
  ? b/2/in_b_2
  ? b/in_b
  ? in_root
  $ hg status --cwd b/2 .
  ? in_b_2
  $ hg status --cwd b/2 ..
  ? ../1/in_b_1
  ? in_b_2
  ? ../in_b

combining patterns with root and patterns without a root works

  $ hg st a/in_a re:.*b$
  ? a/in_a
  ? b/in_b

tweaking defaults works
  $ hg status --cwd a --config ui.tweakdefaults=yes
  ? 1/in_a_1
  ? in_a
  ? ../b/1/in_b_1
  ? ../b/2/in_b_2
  ? ../b/in_b
  ? ../in_root
  $ HGPLAIN=1 hg status --cwd a --config ui.tweakdefaults=yes
  ? a/1/in_a_1 (glob)
  ? a/in_a (glob)
  ? b/1/in_b_1 (glob)
  ? b/2/in_b_2 (glob)
  ? b/in_b (glob)
  ? in_root
  $ HGPLAINEXCEPT=tweakdefaults hg status --cwd a --config ui.tweakdefaults=yes
  ? 1/in_a_1
  ? in_a
  ? ../b/1/in_b_1
  ? ../b/2/in_b_2
  ? ../b/in_b
  ? ../in_root (glob)

relative paths can be requested

  $ hg status --cwd a --config ui.relative-paths=yes
  ? 1/in_a_1
  ? in_a
  ? ../b/1/in_b_1
  ? ../b/2/in_b_2
  ? ../b/in_b
  ? ../in_root

  $ hg status --cwd a . --config ui.relative-paths=legacy
  ? 1/in_a_1
  ? in_a
  $ hg status --cwd a . --config ui.relative-paths=no
  ? a/1/in_a_1
  ? a/in_a

commands.status.relative overrides ui.relative-paths

  $ cat >> $HGRCPATH <<EOF
  > [ui]
  > relative-paths = False
  > [commands]
  > status.relative = True
  > EOF
  $ hg status --cwd a
  ? 1/in_a_1
  ? in_a
  ? ../b/1/in_b_1
  ? ../b/2/in_b_2
  ? ../b/in_b
  ? ../in_root
  $ HGPLAIN=1 hg status --cwd a
  ? a/1/in_a_1 (glob)
  ? a/in_a (glob)
  ? b/1/in_b_1 (glob)
  ? b/2/in_b_2 (glob)
  ? b/in_b (glob)
  ? in_root

if relative paths are explicitly off, tweakdefaults doesn't change it
  $ cat >> $HGRCPATH <<EOF
  > [commands]
  > status.relative = False
  > EOF
  $ hg status --cwd a --config ui.tweakdefaults=yes
  ? a/1/in_a_1
  ? a/in_a
  ? b/1/in_b_1
  ? b/2/in_b_2
  ? b/in_b
  ? in_root

  $ cd ..

  $ hg init repo2
  $ cd repo2
  $ touch modified removed deleted ignored
  $ echo "^ignored$" > .hgignore
  $ hg ci -A -m 'initial checkin'
  adding .hgignore
  adding deleted
  adding modified
  adding removed
  $ touch modified added unknown ignored
  $ hg add added
  $ hg remove removed
  $ rm deleted

hg status:

  $ hg status
  A added
  R removed
  ! deleted
  ? unknown

hg status modified added removed deleted unknown never-existed ignored:

  $ hg status modified added removed deleted unknown never-existed ignored
  never-existed: * (glob)
  A added
  R removed
  ! deleted
  ? unknown

  $ hg copy modified copied

hg status -C:

  $ hg status -C
  A added
  A copied
    modified
  R removed
  ! deleted
  ? unknown

hg status -A:

  $ hg status -A
  A added
  A copied
    modified
  R removed
  ! deleted
  ? unknown
  I ignored
  C .hgignore
  C modified

  $ hg status -A -T '{status} {path} {node|shortest}\n'
  A added ffff
  A copied ffff
  R removed ffff
  ! deleted ffff
  ? unknown ffff
  I ignored ffff
  C .hgignore ffff
  C modified ffff

  $ hg status -A -Tjson
  [
   {
    "itemtype": "file",
    "path": "added",
    "status": "A"
   },
   {
    "itemtype": "file",
    "path": "copied",
    "source": "modified",
    "status": "A"
   },
   {
    "itemtype": "file",
    "path": "removed",
    "status": "R"
   },
   {
    "itemtype": "file",
    "path": "deleted",
    "status": "!"
   },
   {
    "itemtype": "file",
    "path": "unknown",
    "status": "?"
   },
   {
    "itemtype": "file",
    "path": "ignored",
    "status": "I"
   },
   {
    "itemtype": "file",
    "path": ".hgignore",
    "status": "C"
   },
   {
    "itemtype": "file",
    "path": "modified",
    "status": "C"
   }
  ]

  $ hg status -A -Tpickle > pickle
  >>> from __future__ import print_function
  >>> from mercurial import util
  >>> pickle = util.pickle
  >>> data = sorted((x[b'status'].decode(), x[b'path'].decode()) for x in pickle.load(open("pickle", r"rb")))
  >>> for s, p in data: print("%s %s" % (s, p))
  ! deleted
  ? pickle
  ? unknown
  A added
  A copied
  C .hgignore
  C modified
  I ignored
  R removed
  $ rm pickle

  $ echo "^ignoreddir$" > .hgignore
  $ mkdir ignoreddir
  $ touch ignoreddir/file

Test templater support:

  $ hg status -AT "[{status}]\t{if(source, '{source} -> ')}{path}\n"
  [M]	.hgignore
  [A]	added
  [A]	modified -> copied
  [R]	removed
  [!]	deleted
  [?]	ignored
  [?]	unknown
  [I]	ignoreddir/file
  [C]	modified
  $ hg status -AT default
  M .hgignore
  A added
  A copied
    modified
  R removed
  ! deleted
  ? ignored
  ? unknown
  I ignoreddir/file
  C modified
  $ hg status -T compact
  abort: "status" not in template map
  [255]

hg status ignoreddir/file:

  $ hg status ignoreddir/file

hg status -i ignoreddir/file:

  $ hg status -i ignoreddir/file
  I ignoreddir/file
  $ cd ..

Check 'status -q' and some combinations

  $ hg init repo3
  $ cd repo3
  $ touch modified removed deleted ignored
  $ echo "^ignored$" > .hgignore
  $ hg commit -A -m 'initial checkin'
  adding .hgignore
  adding deleted
  adding modified
  adding removed
  $ touch added unknown ignored
  $ hg add added
  $ echo "test" >> modified
  $ hg remove removed
  $ rm deleted
  $ hg copy modified copied

Specify working directory revision explicitly, that should be the same as
"hg status"

  $ hg status --change "wdir()"
  M modified
  A added
  A copied
  R removed
  ! deleted
  ? unknown

Run status with 2 different flags.
Check if result is the same or different.
If result is not as expected, raise error

  $ assert() {
  >     hg status $1 > ../a
  >     hg status $2 > ../b
  >     if diff ../a ../b > /dev/null; then
  >         out=0
  >     else
  >         out=1
  >     fi
  >     if [ $3 -eq 0 ]; then
  >         df="same"
  >     else
  >         df="different"
  >     fi
  >     if [ $out -ne $3 ]; then
  >         echo "Error on $1 and $2, should be $df."
  >     fi
  > }

Assert flag1 flag2 [0-same | 1-different]

  $ assert "-q" "-mard"      0
  $ assert "-A" "-marduicC"  0
  $ assert "-qA" "-mardcC"   0
  $ assert "-qAui" "-A"      0
  $ assert "-qAu" "-marducC" 0
  $ assert "-qAi" "-mardicC" 0
  $ assert "-qu" "-u"        0
  $ assert "-q" "-u"         1
  $ assert "-m" "-a"         1
  $ assert "-r" "-d"         1
  $ cd ..

  $ hg init repo4
  $ cd repo4
  $ touch modified removed deleted
  $ hg ci -q -A -m 'initial checkin'
  $ touch added unknown
  $ hg add added
  $ hg remove removed
  $ rm deleted
  $ echo x > modified
  $ hg copy modified copied
  $ hg ci -m 'test checkin' -d "1000001 0"
  $ rm *
  $ touch unrelated
  $ hg ci -q -A -m 'unrelated checkin' -d "1000002 0"

hg status --change 1:

  $ hg status --change 1
  M modified
  A added
  A copied
  R removed

hg status --change 1 unrelated:

  $ hg status --change 1 unrelated

hg status -C --change 1 added modified copied removed deleted:

  $ hg status -C --change 1 added modified copied removed deleted
  M modified
  A added
  A copied
    modified
  R removed

hg status -A --change 1 and revset:

  $ hg status -A --change '1|1'
  M modified
  A added
  A copied
    modified
  R removed
  C deleted

  $ cd ..

hg status with --rev and reverted changes:

  $ hg init reverted-changes-repo
  $ cd reverted-changes-repo
  $ echo a > file
  $ hg add file
  $ hg ci -m a
  $ echo b > file
  $ hg ci -m b

reverted file should appear clean

  $ hg revert -r 0 .
  reverting file
  $ hg status -A --rev 0
  C file

#if execbit
reverted file with changed flag should appear modified

  $ chmod +x file
  $ hg status -A --rev 0
  M file

  $ hg revert -r 0 .
  reverting file

reverted and committed file with changed flag should appear modified

  $ hg co -C .
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ chmod +x file
  $ hg ci -m 'change flag'
  $ hg status -A --rev 1 --rev 2
  M file
  $ hg diff -r 1 -r 2

#endif

  $ cd ..

hg status of binary file starting with '\1\n', a separator for metadata:

  $ hg init repo5
  $ cd repo5
  >>> open("010a", r"wb").write(b"\1\nfoo") and None
  $ hg ci -q -A -m 'initial checkin'
  $ hg status -A
  C 010a

  >>> open("010a", r"wb").write(b"\1\nbar") and None
  $ hg status -A
  M 010a
  $ hg ci -q -m 'modify 010a'
  $ hg status -A --rev 0:1
  M 010a

  $ touch empty
  $ hg ci -q -A -m 'add another file'
  $ hg status -A --rev 1:2 010a
  C 010a

  $ cd ..

test "hg status" with "directory pattern" which matches against files
only known on target revision.

  $ hg init repo6
  $ cd repo6

  $ echo a > a.txt
  $ hg add a.txt
  $ hg commit -m '#0'
  $ mkdir -p 1/2/3/4/5
  $ echo b > 1/2/3/4/5/b.txt
  $ hg add 1/2/3/4/5/b.txt
  $ hg commit -m '#1'

  $ hg update -C 0 > /dev/null
  $ hg status -A
  C a.txt

the directory matching against specified pattern should be removed,
because directory existence prevents 'dirstate.walk()' from showing
warning message about such pattern.

  $ test ! -d 1
  $ hg status -A --rev 1 1/2/3/4/5/b.txt
  R 1/2/3/4/5/b.txt
  $ hg status -A --rev 1 1/2/3/4/5
  R 1/2/3/4/5/b.txt
  $ hg status -A --rev 1 1/2/3
  R 1/2/3/4/5/b.txt
  $ hg status -A --rev 1 1
  R 1/2/3/4/5/b.txt

  $ hg status --config ui.formatdebug=True --rev 1 1
  status = [
      {
          'itemtype': 'file',
          'path': '1/2/3/4/5/b.txt',
          'status': 'R'
      },
  ]

#if windows
  $ hg --config ui.slash=false status -A --rev 1 1
  R 1\2\3\4\5\b.txt
#endif

  $ cd ..

Status after move overwriting a file (issue4458)
=================================================


  $ hg init issue4458
  $ cd issue4458
  $ echo a > a
  $ echo b > b
  $ hg commit -Am base
  adding a
  adding b


with --force

  $ hg mv b --force a
  $ hg st --copies
  M a
    b
  R b
  $ hg revert --all
  reverting a
  undeleting b
  $ rm *.orig

without force

  $ hg rm a
  $ hg st --copies
  R a
  $ hg mv b a
  $ hg st --copies
  M a
    b
  R b

using ui.statuscopies setting
  $ hg st --config ui.statuscopies=true
  M a
    b
  R b
  $ hg st --config ui.statuscopies=false
  M a
  R b
  $ hg st --config ui.tweakdefaults=yes
  M a
    b
  R b

using log status template (issue5155)
  $ hg log -Tstatus -r 'wdir()' -C
  changeset:   2147483647:ffffffffffff
  parent:      0:8c55c58b4c0e
  user:        test
  date:        * (glob)
  files:
  M a
    b
  R b
  
  $ hg log -GTstatus -r 'wdir()' -C
  o  changeset:   2147483647:ffffffffffff
  |  parent:      0:8c55c58b4c0e
  ~  user:        test
     date:        * (glob)
     files:
     M a
       b
     R b
  

Other "bug" highlight, the revision status does not report the copy information.
This is buggy behavior.

  $ hg commit -m 'blah'
  $ hg st --copies --change .
  M a
  R b

using log status template, the copy information is displayed correctly.
  $ hg log -Tstatus -r. -C
  changeset:   1:6685fde43d21
  tag:         tip
  user:        test
  date:        * (glob)
  summary:     blah
  files:
  M a
    b
  R b
  

  $ cd ..

Make sure .hg doesn't show up even as a symlink

  $ hg init repo0
  $ mkdir symlink-repo0
  $ cd symlink-repo0
  $ ln -s ../repo0/.hg
  $ hg status

If the size hasn’t changed but mtime has, status needs to read the contents
of the file to check whether it has changed

  $ echo 1 > a
  $ echo 1 > b
  $ touch -t 200102030000 a b
  $ hg commit -Aqm '#0'
  $ echo 2 > a
  $ touch -t 200102040000 a b
  $ hg status
  M a

Asking specifically for the status of a deleted/removed file

  $ rm a
  $ rm b
  $ hg status a
  ! a
  $ hg rm a
  $ hg rm b
  $ hg status a
  R a
  $ hg commit -qm '#1'
  $ hg status a
  a: $ENOENT$

Check using include flag with pattern when status does not need to traverse
the working directory (issue6483)

  $ cd ..
  $ hg init issue6483
  $ cd issue6483
  $ touch a.py b.rs
  $ hg add a.py b.rs
  $ hg st -aI "*.py"
  A a.py

Also check exclude pattern

  $ hg st -aX "*.rs"
  A a.py

issue6335
When a directory containing a tracked file gets symlinked, as of 5.8
`hg st` only gives the correct answer about clean (or deleted) files
if also listing unknowns.
The tree-based dirstate and status algorithm fix this:

#if symlink no-dirstate-v1

  $ cd ..
  $ hg init issue6335
  $ cd issue6335
  $ mkdir foo
  $ touch foo/a
  $ hg ci -Ama
  adding foo/a
  $ mv foo bar
  $ ln -s bar foo
  $ hg status
  ! foo/a
  ? bar/a
  ? foo

  $ hg status -c  # incorrect output with `dirstate-v1`
  $ hg status -cu
  ? bar/a
  ? foo
  $ hg status -d  # incorrect output with `dirstate-v1`
  ! foo/a
  $ hg status -du
  ! foo/a
  ? bar/a
  ? foo

#endif


Create a repo with files in each possible status

  $ cd ..
  $ hg init repo7
  $ cd repo7
  $ mkdir subdir
  $ touch clean modified deleted removed
  $ touch subdir/clean subdir/modified subdir/deleted subdir/removed
  $ echo ignored > .hgignore
  $ hg ci -Aqm '#0'
  $ echo 1 > modified
  $ echo 1 > subdir/modified
  $ rm deleted
  $ rm subdir/deleted
  $ hg rm removed
  $ hg rm subdir/removed
  $ touch unknown ignored
  $ touch subdir/unknown subdir/ignored

Check the output

  $ hg status
  M modified
  M subdir/modified
  R removed
  R subdir/removed
  ! deleted
  ! subdir/deleted
  ? subdir/unknown
  ? unknown

  $ hg status -mard
  M modified
  M subdir/modified
  R removed
  R subdir/removed
  ! deleted
  ! subdir/deleted

  $ hg status -A
  M modified
  M subdir/modified
  R removed
  R subdir/removed
  ! deleted
  ! subdir/deleted
  ? subdir/unknown
  ? unknown
  I ignored
  I subdir/ignored
  C .hgignore
  C clean
  C subdir/clean

Note: `hg status some-name` creates a patternmatcher which is not supported
yet by the Rust implementation of status, but includematcher is supported.
--include is used below for that reason

#if unix-permissions

Not having permission to read a directory that contains tracked files makes
status emit a warning then behave as if the directory was empty or removed
entirely:

  $ chmod 0 subdir
  $ hg status --include subdir
  subdir: Permission denied
  R subdir/removed
  ! subdir/clean
  ! subdir/deleted
  ! subdir/modified
  $ chmod 755 subdir

#endif

Remove a directory that contains tracked files

  $ rm -r subdir
  $ hg status --include subdir
  R subdir/removed
  ! subdir/clean
  ! subdir/deleted
  ! subdir/modified

… and replace it by a file

  $ touch subdir
  $ hg status --include subdir
  R subdir/removed
  ! subdir/clean
  ! subdir/deleted
  ! subdir/modified
  ? subdir

Replaced a deleted or removed file with a directory

  $ mkdir deleted removed
  $ touch deleted/1 removed/1
  $ hg status --include deleted --include removed
  R removed
  ! deleted
  ? deleted/1
  ? removed/1
  $ hg add removed/1
  $ hg status --include deleted --include removed
  A removed/1
  R removed
  ! deleted
  ? deleted/1

Deeply nested files in an ignored directory are still listed on request

  $ echo ignored-dir >> .hgignore
  $ mkdir ignored-dir
  $ mkdir ignored-dir/subdir
  $ touch ignored-dir/subdir/1
  $ hg status --ignored
  I ignored
  I ignored-dir/subdir/1

Check using include flag while listing ignored composes correctly (issue6514)

  $ cd ..
  $ hg init issue6514
  $ cd issue6514
  $ mkdir ignored-folder
  $ touch A.hs B.hs C.hs ignored-folder/other.txt ignored-folder/ctest.hs
  $ cat >.hgignore <<EOF
  > A.hs
  > B.hs
  > ignored-folder/
  > EOF
  $ hg st -i -I 're:.*\.hs$'
  I A.hs
  I B.hs
  I ignored-folder/ctest.hs

#if dirstate-v2

Check read_dir caching

  $ cd ..
  $ hg init repo8
  $ cd repo8
  $ mkdir subdir
  $ touch subdir/a subdir/b
  $ hg ci -Aqm '#0'

The cached mtime is initially unset

  $ hg debugdirstate --all --no-dates | grep '^ '
      0         -1 unset               subdir

It is still not set when there are unknown files

  $ touch subdir/unknown
  $ hg status
  ? subdir/unknown
  $ hg debugdirstate --all --no-dates | grep '^ '
      0         -1 unset               subdir

Now the directory is eligible for caching, so its mtime is save in the dirstate

  $ rm subdir/unknown
  $ hg status
  $ hg debugdirstate --all --no-dates | grep '^ '
      0         -1 set                 subdir

This time the command should be ever so slightly faster since it does not need `read_dir("subdir")`

  $ hg status

Creating a new file changes the directory’s mtime, invalidating the cache

  $ touch subdir/unknown
  $ hg status
  ? subdir/unknown

  $ rm subdir/unknown
  $ hg status

Removing a node from the dirstate resets the cache for its parent directory

  $ hg forget subdir/a
  $ hg debugdirstate --all --no-dates | grep '^ '
      0         -1 set                 subdir
  $ hg ci -qm '#1'
  $ hg debugdirstate --all --no-dates | grep '^ '
      0         -1 unset               subdir
  $ hg status
  ? subdir/a

#endif