view tests/test-merge-changedelete.t @ 37048:fc5e261915b9

wireproto: require POST for all HTTPv2 requests

Wire protocol version 1 transfers argument data via request
headers by default. This has historically caused problems because
servers institute limits on the length of individual HTTP headers
as well as the total size of all request headers. Mercurial servers
can advertise the maximum length of an individual header. But
there's no guarantee any intermediate HTTP agents will accept
headers up to that length.

In the existing wire protocol, server operators typically also
key off the HTTP request method to implement authentication.
For example, GET requests translate to read-only requests and
can be allowed. But read-write commands must use POST and require
authentication. This has typically worked because the only wire
protocol commands that use POST modify the repo (e.g. the
"unbundle" command).

There is an experimental feature to enable clients to transmit
argument data via POST request bodies. This is technically a
better and more robust solution. But we can't enable it by default
because of servers assuming POST means write access.

In version 2 of the wire protocol, the permissions of a request
are encoded in the URL. And with it being a new protocol in a new
URL space, we're not constrained by backwards compatibility
requirements.

This commit adopts the technically superior mechanism of using
HTTP request bodies to send argument data by requiring POST for
all commands. Strictly speaking, it may be possible to send
request bodies on GET requests. But my experience is that not all
HTTP stacks support this. POST pretty much always works. Using POST
for read-only operations does sacrifice some RESTful design
purity. But this API cares about practicality, not about being
in Roy T. Fielding's REST ivory tower.

There's a chance we may relax this restriction in the future. But
for now, I want to see how far we can get with a POST only API.

Differential Revision: https://phab.mercurial-scm.org/D2837

Tests for change/delete conflicts, including:
b5605d88dc27: Make ui.prompt repeat on "unrecognized response" again
 (issue897)

840e2b315c1f: Fix misleading error and prompts during update/merge
 (issue556)

Make sure HGMERGE doesn't interfere with the test
  $ unset HGMERGE

  $ status() {
  >     echo "--- status ---"
  >     hg st -A file1 file2 file3
  >     echo "--- resolve --list ---"
  >     hg resolve --list file1 file2 file3
  >     echo "--- debugmergestate ---"
  >     hg debugmergestate
  >     for file in file1 file2 file3; do
  >         if [ -f $file ]; then
  >             echo "--- $file ---"
  >             cat $file
  >         else
  >             echo "*** $file does not exist"
  >         fi
  >     done
  > }

  $ hg init repo
  $ cd repo

  $ echo 1 > file1
  $ echo 2 > file2
  $ echo 3 > file3
  $ hg ci -Am 'added files'
  adding file1
  adding file2
  adding file3

  $ hg rm file1
  $ echo changed >> file2
  $ echo changed1 >> file3
  $ hg ci -m 'removed file1, changed file2, changed file3'

  $ hg co 0
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ echo changed >> file1
  $ hg rm file2
  $ echo changed2 >> file3
  $ hg ci -m 'changed file1, removed file2, changed file3'
  created new head


Non-interactive merge:

  $ hg merge -y
  local [working copy] changed file1 which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  other [merge rev] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  merging file3
  warning: conflicts while merging file3! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 0 files removed, 3 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
  [1]

  $ status
  --- status ---
  M file2
  M file3
  C file1
  --- resolve --list ---
  U file1
  U file2
  U file3
  --- debugmergestate ---
  * version 2 records
  local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: merge rev
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "u", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  file extras: file3 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file3 (record type "F", state "u", hash d5b0a58bc47161b1b8a831084b366f757c4f0b11)
    local path: file3 (flags "")
    ancestor path: file3 (node 2661d26c649684b482d10f91960cc3db683c38b4)
    other path: file3 (node a2644c43e210356772c7772a8674544a62e06beb)
  --- file1 ---
  1
  changed
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  <<<<<<< working copy: 13910f48cf7b - test: changed file1, removed file2, chan...
  changed2
  =======
  changed1
  >>>>>>> merge rev:    10f9a0a634e8 - test: removed file1, changed file2, chan...


Interactive merge:

  $ hg co -C
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  updated to "13910f48cf7b: changed file1, removed file2, changed file3"
  1 other heads for branch "default"

  $ hg merge --config ui.interactive=true <<EOF
  > c
  > d
  > EOF
  local [working copy] changed file1 which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? c
  other [merge rev] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? d
  merging file3
  warning: conflicts while merging file3! (edit, then use 'hg resolve --mark')
  0 files updated, 2 files merged, 0 files removed, 1 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
  [1]

  $ status
  --- status ---
  file2: * (glob)
  M file3
  C file1
  --- resolve --list ---
  R file1
  R file2
  U file3
  --- debugmergestate ---
  * version 2 records
  local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: merge rev
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "r", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  file extras: file3 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file3 (record type "F", state "u", hash d5b0a58bc47161b1b8a831084b366f757c4f0b11)
    local path: file3 (flags "")
    ancestor path: file3 (node 2661d26c649684b482d10f91960cc3db683c38b4)
    other path: file3 (node a2644c43e210356772c7772a8674544a62e06beb)
  --- file1 ---
  1
  changed
  *** file2 does not exist
  --- file3 ---
  3
  <<<<<<< working copy: 13910f48cf7b - test: changed file1, removed file2, chan...
  changed2
  =======
  changed1
  >>>>>>> merge rev:    10f9a0a634e8 - test: removed file1, changed file2, chan...


Interactive merge with bad input:

  $ hg co -C
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  updated to "13910f48cf7b: changed file1, removed file2, changed file3"
  1 other heads for branch "default"

  $ hg merge --config ui.interactive=true <<EOF
  > foo
  > bar
  > d
  > baz
  > c
  > EOF
  local [working copy] changed file1 which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? foo
  unrecognized response
  local [working copy] changed file1 which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? bar
  unrecognized response
  local [working copy] changed file1 which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? d
  other [merge rev] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? baz
  unrecognized response
  other [merge rev] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? c
  merging file3
  warning: conflicts while merging file3! (edit, then use 'hg resolve --mark')
  0 files updated, 1 files merged, 1 files removed, 1 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
  [1]

  $ status
  --- status ---
  M file2
  M file3
  R file1
  --- resolve --list ---
  R file1
  R file2
  U file3
  --- debugmergestate ---
  * version 2 records
  local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: merge rev
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "r", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  file extras: file3 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file3 (record type "F", state "u", hash d5b0a58bc47161b1b8a831084b366f757c4f0b11)
    local path: file3 (flags "")
    ancestor path: file3 (node 2661d26c649684b482d10f91960cc3db683c38b4)
    other path: file3 (node a2644c43e210356772c7772a8674544a62e06beb)
  *** file1 does not exist
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  <<<<<<< working copy: 13910f48cf7b - test: changed file1, removed file2, chan...
  changed2
  =======
  changed1
  >>>>>>> merge rev:    10f9a0a634e8 - test: removed file1, changed file2, chan...


Interactive merge with not enough input:

  $ hg co -C
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  updated to "13910f48cf7b: changed file1, removed file2, changed file3"
  1 other heads for branch "default"

  $ hg merge --config ui.interactive=true <<EOF
  > d
  > EOF
  local [working copy] changed file1 which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? d
  other [merge rev] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
  merging file3
  warning: conflicts while merging file3! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 1 files removed, 2 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
  [1]

  $ status
  --- status ---
  M file2
  M file3
  R file1
  --- resolve --list ---
  R file1
  U file2
  U file3
  --- debugmergestate ---
  * version 2 records
  local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: merge rev
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "u", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  file extras: file3 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file3 (record type "F", state "u", hash d5b0a58bc47161b1b8a831084b366f757c4f0b11)
    local path: file3 (flags "")
    ancestor path: file3 (node 2661d26c649684b482d10f91960cc3db683c38b4)
    other path: file3 (node a2644c43e210356772c7772a8674544a62e06beb)
  *** file1 does not exist
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  <<<<<<< working copy: 13910f48cf7b - test: changed file1, removed file2, chan...
  changed2
  =======
  changed1
  >>>>>>> merge rev:    10f9a0a634e8 - test: removed file1, changed file2, chan...

Choose local versions of files

  $ hg co -C
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  updated to "13910f48cf7b: changed file1, removed file2, changed file3"
  1 other heads for branch "default"

  $ hg merge --tool :local
  0 files updated, 3 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ status 2>&1 | tee $TESTTMP/local.status
  --- status ---
  file2: * (glob)
  M file3
  C file1
  --- resolve --list ---
  R file1
  R file2
  R file3
  --- debugmergestate ---
  * version 2 records
  local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: merge rev
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "r", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  file extras: file3 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file3 (record type "F", state "r", hash d5b0a58bc47161b1b8a831084b366f757c4f0b11)
    local path: file3 (flags "")
    ancestor path: file3 (node 2661d26c649684b482d10f91960cc3db683c38b4)
    other path: file3 (node a2644c43e210356772c7772a8674544a62e06beb)
  --- file1 ---
  1
  changed
  *** file2 does not exist
  --- file3 ---
  3
  changed2

Choose other versions of files

  $ hg co -C
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  updated to "13910f48cf7b: changed file1, removed file2, changed file3"
  1 other heads for branch "default"

  $ hg merge --tool :other
  0 files updated, 2 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ status 2>&1 | tee $TESTTMP/other.status
  --- status ---
  M file2
  M file3
  R file1
  --- resolve --list ---
  R file1
  R file2
  R file3
  --- debugmergestate ---
  * version 2 records
  local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: merge rev
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "r", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  file extras: file3 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file3 (record type "F", state "r", hash d5b0a58bc47161b1b8a831084b366f757c4f0b11)
    local path: file3 (flags "")
    ancestor path: file3 (node 2661d26c649684b482d10f91960cc3db683c38b4)
    other path: file3 (node a2644c43e210356772c7772a8674544a62e06beb)
  *** file1 does not exist
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  changed1

Fail

  $ hg co -C
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  updated to "13910f48cf7b: changed file1, removed file2, changed file3"
  1 other heads for branch "default"

  $ hg merge --tool :fail
  0 files updated, 0 files merged, 0 files removed, 3 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
  [1]
  $ status 2>&1 | tee $TESTTMP/fail.status
  --- status ---
  M file2
  M file3
  C file1
  --- resolve --list ---
  U file1
  U file2
  U file3
  --- debugmergestate ---
  * version 2 records
  local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: merge rev
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "u", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  file extras: file3 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file3 (record type "F", state "u", hash d5b0a58bc47161b1b8a831084b366f757c4f0b11)
    local path: file3 (flags "")
    ancestor path: file3 (node 2661d26c649684b482d10f91960cc3db683c38b4)
    other path: file3 (node a2644c43e210356772c7772a8674544a62e06beb)
  --- file1 ---
  1
  changed
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  changed2

Force prompts with no input (should be similar to :fail)

  $ hg co -C
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  updated to "13910f48cf7b: changed file1, removed file2, changed file3"
  1 other heads for branch "default"

  $ hg merge --config ui.interactive=True --tool :prompt
  local [working copy] changed file1 which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? 
  other [merge rev] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for file3? 
  0 files updated, 0 files merged, 0 files removed, 3 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
  [1]
  $ status 2>&1 | tee $TESTTMP/prompt.status
  --- status ---
  M file2
  M file3
  C file1
  --- resolve --list ---
  U file1
  U file2
  U file3
  --- debugmergestate ---
  * version 2 records
  local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: merge rev
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "u", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  file extras: file3 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file3 (record type "F", state "u", hash d5b0a58bc47161b1b8a831084b366f757c4f0b11)
    local path: file3 (flags "")
    ancestor path: file3 (node 2661d26c649684b482d10f91960cc3db683c38b4)
    other path: file3 (node a2644c43e210356772c7772a8674544a62e06beb)
  --- file1 ---
  1
  changed
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  changed2
  $ cmp $TESTTMP/fail.status $TESTTMP/prompt.status || diff -U8 $TESTTMP/fail.status $TESTTMP/prompt.status


Force prompts

  $ hg co -C
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  updated to "13910f48cf7b: changed file1, removed file2, changed file3"
  1 other heads for branch "default"

  $ hg merge --tool :prompt
  local [working copy] changed file1 which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  other [merge rev] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for file3? u
  0 files updated, 0 files merged, 0 files removed, 3 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
  [1]
  $ status
  --- status ---
  M file2
  M file3
  C file1
  --- resolve --list ---
  U file1
  U file2
  U file3
  --- debugmergestate ---
  * version 2 records
  local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: merge rev
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "u", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  file extras: file3 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file3 (record type "F", state "u", hash d5b0a58bc47161b1b8a831084b366f757c4f0b11)
    local path: file3 (flags "")
    ancestor path: file3 (node 2661d26c649684b482d10f91960cc3db683c38b4)
    other path: file3 (node a2644c43e210356772c7772a8674544a62e06beb)
  --- file1 ---
  1
  changed
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  changed2

Choose to merge all files

  $ hg co -C
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  updated to "13910f48cf7b: changed file1, removed file2, changed file3"
  1 other heads for branch "default"

  $ hg merge --tool :merge3
  local [working copy] changed file1 which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  other [merge rev] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  merging file3
  warning: conflicts while merging file3! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 0 files removed, 3 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
  [1]
  $ status
  --- status ---
  M file2
  M file3
  C file1
  --- resolve --list ---
  U file1
  U file2
  U file3
  --- debugmergestate ---
  * version 2 records
  local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: merge rev
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "u", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  file extras: file3 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file3 (record type "F", state "u", hash d5b0a58bc47161b1b8a831084b366f757c4f0b11)
    local path: file3 (flags "")
    ancestor path: file3 (node 2661d26c649684b482d10f91960cc3db683c38b4)
    other path: file3 (node a2644c43e210356772c7772a8674544a62e06beb)
  --- file1 ---
  1
  changed
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  <<<<<<< working copy: 13910f48cf7b - test: changed file1, removed file2, chan...
  changed2
  ||||||| base
  =======
  changed1
  >>>>>>> merge rev:    10f9a0a634e8 - test: removed file1, changed file2, chan...

Exercise transitions between local, other, fail and prompt, and make sure the
dirstate stays consistent. (Compare with each other and to the above
invocations.)

  $ testtransitions() {
  >     # this traversal order covers every transition
  >     tools="local other prompt local fail other local prompt other fail prompt fail local"
  >     lasttool="merge3"
  >     for tool in $tools; do
  >         echo "=== :$lasttool -> :$tool ==="
  >         ref="$TESTTMP/$tool.status"
  >         hg resolve --unmark --all
  >         hg resolve --tool ":$tool" --all --config ui.interactive=True
  >         status > "$TESTTMP/compare.status" 2>&1
  >         echo '--- diff of status ---'
  >         if cmp "$TESTTMP/$tool.status" "$TESTTMP/compare.status" || diff -U8 "$TESTTMP/$tool.status" "$TESTTMP/compare.status"; then
  >             echo '(status identical)'
  >         fi
  >         lasttool="$tool"
  >         echo
  >     done
  > }

  $ testtransitions
  === :merge3 -> :local ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  
  === :local -> :other ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  
  === :other -> :prompt ===
  local [working copy] changed file1 which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? 
  other [merge rev] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for file3? 
  --- diff of status ---
  (status identical)
  
  === :prompt -> :local ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  
  === :local -> :fail ===
  --- diff of status ---
  (status identical)
  
  === :fail -> :other ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  
  === :other -> :local ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  
  === :local -> :prompt ===
  local [working copy] changed file1 which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? 
  other [merge rev] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for file3? 
  --- diff of status ---
  (status identical)
  
  === :prompt -> :other ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  
  === :other -> :fail ===
  --- diff of status ---
  (status identical)
  
  === :fail -> :prompt ===
  local [working copy] changed file1 which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? 
  other [merge rev] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for file3? 
  --- diff of status ---
  (status identical)
  
  === :prompt -> :fail ===
  --- diff of status ---
  (status identical)
  
  === :fail -> :local ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  


Non-interactive linear update

  $ hg co -C 0
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo changed >> file1
  $ hg rm file2
  $ hg update 1 -y
  local [working copy] changed file1 which other [destination] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  other [destination] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  1 files updated, 0 files merged, 0 files removed, 2 files unresolved
  use 'hg resolve' to retry unresolved file merges
  [1]
  $ status
  --- status ---
  A file1
  C file2
  C file3
  --- resolve --list ---
  U file1
  U file2
  --- debugmergestate ---
  * version 2 records
  local: ab57bf49aa276a22d35a473592d4c34b5abc3eff
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: destination
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "u", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  --- file1 ---
  1
  changed
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  changed1

Choose local versions of files

  $ hg co -C 0
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo changed >> file1
  $ hg rm file2
  $ hg update 1 --tool :local
  1 files updated, 2 files merged, 0 files removed, 0 files unresolved
  $ status 2>&1 | tee $TESTTMP/local.status
  --- status ---
  file2: * (glob)
  A file1
  C file3
  --- resolve --list ---
  R file1
  R file2
  --- debugmergestate ---
  * version 2 records
  local: ab57bf49aa276a22d35a473592d4c34b5abc3eff
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: destination
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "r", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  --- file1 ---
  1
  changed
  *** file2 does not exist
  --- file3 ---
  3
  changed1

Choose other versions of files

  $ hg co -C 0
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo changed >> file1
  $ hg rm file2
  $ hg update 1 --tool :other
  1 files updated, 1 files merged, 1 files removed, 0 files unresolved
  $ status 2>&1 | tee $TESTTMP/other.status
  --- status ---
  file1: * (glob)
  C file2
  C file3
  --- resolve --list ---
  R file1
  R file2
  --- debugmergestate ---
  * version 2 records
  local: ab57bf49aa276a22d35a473592d4c34b5abc3eff
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: destination
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "r", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  *** file1 does not exist
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  changed1

Fail

  $ hg co -C 0
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo changed >> file1
  $ hg rm file2
  $ hg update 1 --tool :fail
  1 files updated, 0 files merged, 0 files removed, 2 files unresolved
  use 'hg resolve' to retry unresolved file merges
  [1]
  $ status 2>&1 | tee $TESTTMP/fail.status
  --- status ---
  A file1
  C file2
  C file3
  --- resolve --list ---
  U file1
  U file2
  --- debugmergestate ---
  * version 2 records
  local: ab57bf49aa276a22d35a473592d4c34b5abc3eff
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: destination
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "u", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  --- file1 ---
  1
  changed
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  changed1

Force prompts with no input

  $ hg co -C 0
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo changed >> file1
  $ hg rm file2
  $ hg update 1 --config ui.interactive=True --tool :prompt
  local [working copy] changed file1 which other [destination] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? 
  other [destination] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
  1 files updated, 0 files merged, 0 files removed, 2 files unresolved
  use 'hg resolve' to retry unresolved file merges
  [1]
  $ status 2>&1 | tee $TESTTMP/prompt.status
  --- status ---
  A file1
  C file2
  C file3
  --- resolve --list ---
  U file1
  U file2
  --- debugmergestate ---
  * version 2 records
  local: ab57bf49aa276a22d35a473592d4c34b5abc3eff
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: destination
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "u", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  --- file1 ---
  1
  changed
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  changed1
  $ cmp $TESTTMP/fail.status $TESTTMP/prompt.status || diff -U8 $TESTTMP/fail.status $TESTTMP/prompt.status

Choose to merge all files

  $ hg co -C 0
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo changed >> file1
  $ hg rm file2
  $ hg update 1 --tool :merge3
  local [working copy] changed file1 which other [destination] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  other [destination] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  1 files updated, 0 files merged, 0 files removed, 2 files unresolved
  use 'hg resolve' to retry unresolved file merges
  [1]
  $ status
  --- status ---
  A file1
  C file2
  C file3
  --- resolve --list ---
  U file1
  U file2
  --- debugmergestate ---
  * version 2 records
  local: ab57bf49aa276a22d35a473592d4c34b5abc3eff
  other: 10f9a0a634e82080907e62f075ab119cbc565ea6
  labels:
    local: working copy
    other: destination
  file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
    local path: file1 (flags "")
    ancestor path: file1 (node b8e02f6433738021a065f94175c7cd23db5f05be)
    other path: file1 (node null)
  file extras: file2 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
  file: file2 (record type "C", state "u", hash null)
    local path: file2 (flags "")
    ancestor path: file2 (node 5d9299349fc01ddd25d0070d149b124d8f10411e)
    other path: file2 (node e7c1328648519852e723de86c0c0525acd779257)
  --- file1 ---
  1
  changed
  --- file2 ---
  2
  changed
  --- file3 ---
  3
  changed1

Test transitions between different merge tools

  $ testtransitions
  === :merge3 -> :local ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  
  === :local -> :other ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  
  === :other -> :prompt ===
  local [working copy] changed file1 which other [destination] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? 
  other [destination] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
  --- diff of status ---
  (status identical)
  
  === :prompt -> :local ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  
  === :local -> :fail ===
  --- diff of status ---
  (status identical)
  
  === :fail -> :other ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  
  === :other -> :local ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  
  === :local -> :prompt ===
  local [working copy] changed file1 which other [destination] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? 
  other [destination] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
  --- diff of status ---
  (status identical)
  
  === :prompt -> :other ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)
  
  === :other -> :fail ===
  --- diff of status ---
  (status identical)
  
  === :fail -> :prompt ===
  local [working copy] changed file1 which other [destination] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? 
  other [destination] changed file2 which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
  --- diff of status ---
  (status identical)
  
  === :prompt -> :fail ===
  --- diff of status ---
  (status identical)
  
  === :fail -> :local ===
  (no more unresolved files)
  --- diff of status ---
  (status identical)