tests: clarify a comment describing a phabricator test scenario

Per review feedback.

Differential Revision: https://phab.mercurial-scm.org/D8455

tests/test-phabricator.t

@@ -1,965 +1,965 b''
 #require vcr
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
   > phabricator = 
   > 
   > [auth]
   > hgphab.schemes = https
   > hgphab.prefix = phab.mercurial-scm.org
   > # When working on the extension and making phabricator interaction
   > # changes, edit this to be a real phabricator token. When done, edit
   > # it back. The VCR transcripts will be auto-sanitised to replace your real
   > # token with this value.
   > hgphab.phabtoken = cli-hahayouwish
   > 
   > [phabricator]
   > debug = True
   > EOF
   $ hg init repo
   $ cd repo
   $ cat >> .hg/hgrc <<EOF
   > [phabricator]
   > url = https://phab.mercurial-scm.org/
   > callsign = HG
   > EOF
   $ VCR="$TESTDIR/phabricator"
 
 Error is handled reasonably. We override the phabtoken here so that
 when you're developing changes to phabricator.py you can edit the
 above config and have a real token in the test but not have to edit
 this test.
   $ hg phabread --config auth.hgphab.phabtoken=cli-notavalidtoken \
   >  --test-vcr "$VCR/phabread-conduit-error.json" D4480 | head
   abort: Conduit Error (ERR-INVALID-AUTH): API token "cli-notavalidtoken" has the wrong length. API tokens should be 32 characters long.
 
 Missing arguments don't crash, and may print the command help
 
   $ hg debugcallconduit
   hg debugcallconduit: invalid arguments
   hg debugcallconduit METHOD
   
   call Conduit API
   
   options:
   
   (use 'hg debugcallconduit -h' to show more help)
   [255]
   $ hg phabread
   abort: empty DREVSPEC set
   [255]
 
 Basic phabread:
   $ hg phabread --test-vcr "$VCR/phabread-4480.json" D4480 | head
   # HG changeset patch
   # Date 1536771503 0
   # Parent  a5de21c9e3703f8e8eb064bd7d893ff2f703c66a
   exchangev2: start to implement pull with wire protocol v2
   
   Wire protocol version 2 will take a substantially different
   approach to exchange than version 1 (at least as far as pulling
   is concerned).
   
   This commit establishes a new exchangev2 module for holding
 
 Phabread with multiple DREVSPEC
 
 TODO: attempt to order related revisions like --stack?
   $ hg phabread --test-vcr "$VCR/phabread-multi-drev.json" D8205 8206 D8207 \
   >             | grep '^Differential Revision'
   Differential Revision: https://phab.mercurial-scm.org/D8205
   Differential Revision: https://phab.mercurial-scm.org/D8206
   Differential Revision: https://phab.mercurial-scm.org/D8207
 
 Empty DREVSPECs don't crash
 
   $ hg phabread --test-vcr "$VCR/phabread-empty-drev.json" D7917-D7917
   abort: empty DREVSPEC set
   [255]
 
 
 phabupdate with an accept:
   $ hg phabupdate --accept D4564 \
   > -m 'I think I like where this is headed. Will read rest of series later.'\
   >  --test-vcr "$VCR/accept-4564.json"
   abort: Conduit Error (ERR-CONDUIT-CORE): Validation errors:
     - You can not accept this revision because it has already been closed. Only open revisions can be accepted.
   [255]
   $ hg phabupdate --accept D7913 -m 'LGTM' --test-vcr "$VCR/accept-7913.json"
 
 Create a differential diff:
   $ HGENCODING=utf-8; export HGENCODING
   $ echo alpha > alpha
   $ hg ci --addremove -m 'create alpha for phabricator test €'
   adding alpha
   $ hg phabsend -r . --test-vcr "$VCR/phabsend-create-alpha.json"
   D7915 - created - d386117f30e6: create alpha for phabricator test \xe2\x82\xac (esc)
   new commits: ['347bf67801e5']
   saved backup bundle to $TESTTMP/repo/.hg/strip-backup/d386117f30e6-24ffe649-phabsend.hg
   $ echo more >> alpha
   $ HGEDITOR=true hg ci --amend
   saved backup bundle to $TESTTMP/repo/.hg/strip-backup/347bf67801e5-3bf313e4-amend.hg
   $ echo beta > beta
   $ hg ci --addremove -m 'create beta for phabricator test'
   adding beta
   $ hg phabsend -r ".^::" --test-vcr "$VCR/phabsend-update-alpha-create-beta.json"
   c44b38f24a45 mapped to old nodes []
   D7915 - updated - c44b38f24a45: create alpha for phabricator test \xe2\x82\xac (esc)
   D7916 - created - 9e6901f21d5b: create beta for phabricator test
   new commits: ['a692622e6937']
   saved backup bundle to $TESTTMP/repo/.hg/strip-backup/9e6901f21d5b-1fcd4f0e-phabsend.hg
   $ unset HGENCODING
 
 The amend won't explode after posting a public commit.  The local tag is left
 behind to identify it.
 
   $ echo 'public change' > beta
   $ hg ci -m 'create public change for phabricator testing'
   $ hg phase --public .
   $ echo 'draft change' > alpha
   $ hg ci -m 'create draft change for phabricator testing'
   $ hg phabsend --amend -r '.^::' --test-vcr "$VCR/phabsend-create-public.json"
   D7917 - created - 7b4185ab5d16: create public change for phabricator testing
   D7918 - created - 251c1c333fc6: create draft change for phabricator testing
   warning: not updating public commit 2:7b4185ab5d16
   new commits: ['3244dc4a3334']
   saved backup bundle to $TESTTMP/repo/.hg/strip-backup/251c1c333fc6-41cb7c3b-phabsend.hg
   $ hg tags -v
   tip                                3:3244dc4a3334
   D7917                              2:7b4185ab5d16 local
 
   $ hg debugcallconduit user.search --test-vcr "$VCR/phab-conduit.json" <<EOF
   > {
   >     "constraints": {
   >         "isBot": true
   >     }
   > }
   > EOF
   {
     "cursor": {
       "after": null,
       "before": null,
       "limit": 100,
       "order": null
     },
     "data": [],
     "maps": {},
     "query": {
       "queryKey": null
     }
   }
 
 Template keywords
   $ hg log -T'{rev} {phabreview|json}\n'
   3 {"id": "D7918", "url": "https://phab.mercurial-scm.org/D7918"}
   2 {"id": "D7917", "url": "https://phab.mercurial-scm.org/D7917"}
   1 {"id": "D7916", "url": "https://phab.mercurial-scm.org/D7916"}
   0 {"id": "D7915", "url": "https://phab.mercurial-scm.org/D7915"}
 
   $ hg log -T'{rev} {if(phabreview, "{phabreview.url} {phabreview.id}")}\n'
   3 https://phab.mercurial-scm.org/D7918 D7918
   2 https://phab.mercurial-scm.org/D7917 D7917
   1 https://phab.mercurial-scm.org/D7916 D7916
   0 https://phab.mercurial-scm.org/D7915 D7915
 
 Commenting when phabsending:
   $ echo comment > comment
   $ hg ci --addremove -m "create comment for phabricator test"
   adding comment
   $ hg phabsend -r . -m "For default branch" --test-vcr "$VCR/phabsend-comment-created.json"
   D7919 - created - d5dddca9023d: create comment for phabricator test
   new commits: ['f7db812bbe1d']
   saved backup bundle to $TESTTMP/repo/.hg/strip-backup/d5dddca9023d-adf673ba-phabsend.hg
   $ echo comment2 >> comment
   $ hg ci --amend
   saved backup bundle to $TESTTMP/repo/.hg/strip-backup/f7db812bbe1d-8fcded77-amend.hg
   $ hg phabsend -r . -m "Address review comments" --test-vcr "$VCR/phabsend-comment-updated.json"
   1849d7828727 mapped to old nodes []
   D7919 - updated - 1849d7828727: create comment for phabricator test
 
 Phabsending a skipped commit:
   $ hg phabsend --no-amend -r . --test-vcr "$VCR/phabsend-skipped.json"
   1849d7828727 mapped to old nodes ['1849d7828727']
   D7919 - skipped - 1849d7828727: create comment for phabricator test
 
-Phabsend doesn't create an instability when rebasing existing revisions on top
+Phabsend doesn't create an instability when restacking existing revisions on top
 of new revisions.
 
   $ hg init reorder
   $ cd reorder
   $ cat >> .hg/hgrc <<EOF
   > [phabricator]
   > url = https://phab.mercurial-scm.org/
   > callsign = HG
   > [experimental]
   > evolution = all
   > EOF
 
   $ echo "add" > file1.txt
   $ hg ci -Aqm 'added'
   $ echo "mod1" > file1.txt
   $ hg ci -m 'modified 1'
   $ echo "mod2" > file1.txt
   $ hg ci -m 'modified 2'
   $ hg phabsend -r . --test-vcr "$VCR/phabsend-add-parent-setup.json"
   D8433 - created - 5d3959e20d1d: modified 2
   new commits: ['2b4aa8a88d61']
   $ hg log -G -T compact
   @  3[tip]:1   2b4aa8a88d61   1970-01-01 00:00 +0000   test
   |    modified 2
   |
   o  1   d549263bcb2d   1970-01-01 00:00 +0000   test
   |    modified 1
   |
   o  0   5cbade24e0fa   1970-01-01 00:00 +0000   test
        added
   
 Also check that it doesn't create more orphans outside of the stack
 
   $ hg up -q 1
   $ echo "mod3" > file1.txt
   $ hg ci -m 'modified 3'
   created new head
   $ hg up -q 3
   $ hg phabsend -r ".^ + ." --test-vcr "$VCR/phabsend-add-parent.json"
   2b4aa8a88d61 mapped to old nodes ['2b4aa8a88d61']
   D8434 - created - d549263bcb2d: modified 1
   D8433 - updated - 2b4aa8a88d61: modified 2
   new commits: ['876a60d024de']
   new commits: ['0c6523cb1d0f']
   restabilizing 1eda4bf55021 as d2c78c3a3e01
   $ hg log -G -T compact
   o  7[tip]:5   d2c78c3a3e01   1970-01-01 00:00 +0000   test
   |    modified 3
   |
   | @  6   0c6523cb1d0f   1970-01-01 00:00 +0000   test
   |/     modified 2
   |
   o  5:0   876a60d024de   1970-01-01 00:00 +0000   test
   |    modified 1
   |
   o  0   5cbade24e0fa   1970-01-01 00:00 +0000   test
        added
   
 Posting obsolete commits is disallowed
 
   $ echo "mod3" > file1.txt
   $ hg ci -m 'modified A'
   $ echo "mod4" > file1.txt
   $ hg ci -m 'modified B'
 
   $ hg up '.^'
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo 'obsolete' > file1.txt
   $ hg amend --config extensions.amend=
   1 new orphan changesets
   $ hg log -G
   @  changeset:   10:082be6c94150
   |  tag:         tip
   |  parent:      6:0c6523cb1d0f
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     modified A
   |
   | *  changeset:   9:a67643f48146
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  instability: orphan
   | |  summary:     modified B
   | |
   | x  changeset:   8:db79727cb2f7
   |/   parent:      6:0c6523cb1d0f
   |    user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    obsolete:    rewritten using amend as 10:082be6c94150
   |    summary:     modified A
   |
   | o  changeset:   7:d2c78c3a3e01
   | |  parent:      5:876a60d024de
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     modified 3
   | |
   o |  changeset:   6:0c6523cb1d0f
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    summary:     modified 2
   |
   o  changeset:   5:876a60d024de
   |  parent:      0:5cbade24e0fa
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     modified 1
   |
   o  changeset:   0:5cbade24e0fa
      user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     added
   
   $ hg phabsend -r 5::
   abort: obsolete commits cannot be posted for review
   [255]
 
 Don't restack existing orphans
 
   $ hg phabsend -r 5::tip --test-vcr "$VCR/phabsend-no-restack-orphan.json"
   876a60d024de mapped to old nodes ['876a60d024de']
   0c6523cb1d0f mapped to old nodes ['0c6523cb1d0f']
   D8434 - updated - 876a60d024de: modified 1
   D8433 - updated - 0c6523cb1d0f: modified 2
   D8435 - created - 082be6c94150: modified A
   new commits: ['b5913193c805']
   not restabilizing unchanged d2c78c3a3e01
   $ hg log -G
   @  changeset:   11:b5913193c805
   |  tag:         tip
   |  parent:      6:0c6523cb1d0f
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     modified A
   |
   | *  changeset:   9:a67643f48146
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  instability: orphan
   | |  summary:     modified B
   | |
   | x  changeset:   8:db79727cb2f7
   |/   parent:      6:0c6523cb1d0f
   |    user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    obsolete:    rewritten using amend, phabsend as 11:b5913193c805
   |    summary:     modified A
   |
   | o  changeset:   7:d2c78c3a3e01
   | |  parent:      5:876a60d024de
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     modified 3
   | |
   o |  changeset:   6:0c6523cb1d0f
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    summary:     modified 2
   |
   o  changeset:   5:876a60d024de
   |  parent:      0:5cbade24e0fa
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     modified 1
   |
   o  changeset:   0:5cbade24e0fa
      user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     added
   
   $ cd ..
 
 Phabesending a new binary, a modified binary, and a removed binary
 
   >>> open('bin', 'wb').write(b'\0a') and None
   $ hg ci -Am 'add binary'
   adding bin
   >>> open('bin', 'wb').write(b'\0b') and None
   $ hg ci -m 'modify binary'
   $ hg rm bin
   $ hg ci -m 'remove binary'
   $ hg phabsend -r .~2:: --test-vcr "$VCR/phabsend-binary.json"
   uploading bin@aa24a81f55de
   D8007 - created - aa24a81f55de: add binary
   uploading bin@d8d62a881b54
   D8008 - created - d8d62a881b54: modify binary
   D8009 - created - af55645b2e29: remove binary
   new commits: ['b8139fbb4a57']
   new commits: ['c88ce4c2d2ad']
   new commits: ['75dbbc901145']
   saved backup bundle to $TESTTMP/repo/.hg/strip-backup/aa24a81f55de-a3a0cf24-phabsend.hg
 
 Phabsend a renamed binary and a copied binary, with and without content changes
 to src and dest
 
   >>> open('bin2', 'wb').write(b'\0c') and None
   $ hg ci -Am 'add another binary'
   adding bin2
 
 TODO: "bin2" can't be viewed in this commit (left or right side), and the URL
 looks much different than when viewing "bin2_moved".  No idea if this is a phab
 bug, or phabsend bug.  The patch (as printed by phabread) look reasonable
 though.
 
   $ hg mv bin2 bin2_moved
   $ hg ci -m "moved binary"
 
 Note: "bin2_moved" is also not viewable in phabricator with this review
 
   $ hg cp bin2_moved bin2_copied
   $ hg ci -m "copied binary"
 
 Note: "bin2_moved_again" is marked binary in phabricator, and both sides of it
 are viewable in their proper state.  "bin2_copied" is not viewable, and not
 listed as binary in phabricator.
 
   >>> open('bin2_copied', 'wb').write(b'\0move+mod') and None
   $ hg mv bin2_copied bin2_moved_again
   $ hg ci -m "move+mod copied binary"
 
 Note: "bin2_moved" and "bin2_moved_copy" are both marked binary, and both
 viewable on each side.
 
   >>> open('bin2_moved', 'wb').write(b'\0precopy mod') and None
   $ hg cp bin2_moved bin2_moved_copied
   >>> open('bin2_moved', 'wb').write(b'\0copy src+mod') and None
   $ hg ci -m "copy+mod moved binary"
 
   $ hg phabsend -r .~4:: --test-vcr "$VCR/phabsend-binary-renames.json"
   uploading bin2@f42f9195e00c
   D8128 - created - f42f9195e00c: add another binary
   D8129 - created - 834ab31d80ae: moved binary
   D8130 - created - 494b750e5194: copied binary
   uploading bin2_moved_again@25f766b50cc2
   D8131 - created - 25f766b50cc2: move+mod copied binary
   uploading bin2_moved_copied@1b87b363a5e4
   uploading bin2_moved@1b87b363a5e4
   D8132 - created - 1b87b363a5e4: copy+mod moved binary
   new commits: ['90437c20312a']
   new commits: ['f391f4da4c61']
   new commits: ['da86a9f3268c']
   new commits: ['003ffc16ba66']
   new commits: ['13bd750c36fa']
   saved backup bundle to $TESTTMP/repo/.hg/strip-backup/f42f9195e00c-e82a0769-phabsend.hg
 
 Phabreading a DREV with a local:commits time as a string:
   $ hg phabread --test-vcr "$VCR/phabread-str-time.json" D1285
   # HG changeset patch
   # User Pulkit Goyal <[e-mail]>
   # Date 1509404054 -19800
   # Node ID 44fc1c1f1774a76423b9c732af6938435099bcc5
   # Parent  8feef8ef8389a3b544e0a74624f1efc3a8d85d35
   repoview: add a new attribute _visibilityexceptions and related API
   
   Currently we don't have a defined way in core to make some hidden revisions
   visible in filtered repo. Extensions to achieve the purpose of unhiding some
   hidden commits, wrap repoview.pinnedrevs() function.
   
   To make the above task simple and have well defined API, this patch adds a new
   attribute '_visibilityexceptions' to repoview class which will contains
   the hidden revs which should be exception.
   This will allow to set different exceptions for different repoview objects
   backed by the same unfiltered repo.
   
   This patch also adds API to add revs to the attribute set and get them.
   
   Thanks to Jun for suggesting the use of repoview class instead of localrepo.
   
   Differential Revision: https://phab.mercurial-scm.org/D1285
   diff --git a/mercurial/repoview.py b/mercurial/repoview.py
   --- a/mercurial/repoview.py
   +++ b/mercurial/repoview.py
   @@ * @@ (glob)
        subclasses of `localrepo`. Eg: `bundlerepo` or `statichttprepo`.
        """
    
   +    # hidden revs which should be visible
   +    _visibilityexceptions = set()
   +
        def __init__(self, repo, filtername):
            object.__setattr__(self, r'_unfilteredrepo', repo)
            object.__setattr__(self, r'filtername', filtername)
   @@ -231,6 +234,14 @@
                return self
            return self.unfiltered().filtered(name)
    
   +    def addvisibilityexceptions(self, revs):
   +        """adds hidden revs which should be visible to set of exceptions"""
   +        self._visibilityexceptions.update(revs)
   +
   +    def getvisibilityexceptions(self):
   +        """returns the set of hidden revs which should be visible"""
   +        return self._visibilityexceptions
   +
        # everything access are forwarded to the proxied repo
        def __getattr__(self, attr):
            return getattr(self._unfilteredrepo, attr)
   diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
   --- a/mercurial/localrepo.py
   +++ b/mercurial/localrepo.py
   @@ -570,6 +570,14 @@
        def close(self):
            self._writecaches()
    
   +    def addvisibilityexceptions(self, exceptions):
   +        # should be called on a filtered repository
   +        pass
   +
   +    def getvisibilityexceptions(self):
   +        # should be called on a filtered repository
   +        return set()
   +
        def _loadextensions(self):
            extensions.loadall(self.ui)
    
   
 A bad .arcconfig doesn't error out
   $ echo 'garbage' > .arcconfig
   $ hg config phabricator --debug
   invalid JSON in $TESTTMP/repo/.arcconfig
   read config from: */.hgrc (glob)
   */.hgrc:*: phabricator.debug=True (glob)
   $TESTTMP/repo/.hg/hgrc:*: phabricator.url=https://phab.mercurial-scm.org/ (glob)
   $TESTTMP/repo/.hg/hgrc:*: phabricator.callsign=HG (glob)
 
 The .arcconfig content overrides global config
   $ cat >> $HGRCPATH << EOF
   > [phabricator]
   > url = global
   > callsign = global
   > EOF
   $ cp $TESTDIR/../.arcconfig .
   $ mv .hg/hgrc .hg/hgrc.bak
   $ hg config phabricator --debug
   read config from: */.hgrc (glob)
   */.hgrc:*: phabricator.debug=True (glob)
   $TESTTMP/repo/.arcconfig: phabricator.callsign=HG
   $TESTTMP/repo/.arcconfig: phabricator.url=https://phab.mercurial-scm.org/
 
 But it doesn't override local config
   $ cat >> .hg/hgrc << EOF
   > [phabricator]
   > url = local
   > callsign = local
   > EOF
   $ hg config phabricator --debug
   read config from: */.hgrc (glob)
   */.hgrc:*: phabricator.debug=True (glob)
   $TESTTMP/repo/.hg/hgrc:*: phabricator.url=local (glob)
   $TESTTMP/repo/.hg/hgrc:*: phabricator.callsign=local (glob)
   $ mv .hg/hgrc.bak .hg/hgrc
 
 Phabimport works with a stack
 
   $ cd ..
   $ hg clone repo repo2 -qr 1
   $ cp repo/.hg/hgrc repo2/.hg/
   $ cd repo2
   $ hg phabimport --stack 'D7918' --test-vcr "$VCR/phabimport-stack.json"
   applying patch from D7917
   applying patch from D7918
   $ hg log -r .: -G -Tcompact
   o  3[tip]   aaef04066140   1970-01-01 00:00 +0000   test
   |    create draft change for phabricator testing
   |
   o  2   8de3712202d1   1970-01-01 00:00 +0000   test
   |    create public change for phabricator testing
   |
   @  1   a692622e6937   1970-01-01 00:00 +0000   test
   |    create beta for phabricator test
   ~
 Phabimport can create secret commits
 
   $ hg rollback --config ui.rollback=True
   repository tip rolled back to revision 1 (undo phabimport)
   $ hg phabimport --stack 'D7918' --test-vcr "$VCR/phabimport-stack.json" \
   >    --config phabimport.secret=True
   applying patch from D7917
   applying patch from D7918
   $ hg log -r 'reverse(.:)' -T phases
   changeset:   3:aaef04066140
   tag:         tip
   phase:       secret
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     create draft change for phabricator testing
   
   changeset:   2:8de3712202d1
   phase:       secret
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     create public change for phabricator testing
   
   changeset:   1:a692622e6937
   phase:       public
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     create beta for phabricator test
   
 Phabimport accepts multiple DREVSPECs
 
   $ hg rollback --config ui.rollback=True
   repository tip rolled back to revision 1 (undo phabimport)
   $ hg phabimport --no-stack D7917 D7918 --test-vcr "$VCR/phabimport-multi-drev.json"
   applying patch from D7917
   applying patch from D7918
 
 Phabsend requires a linear range of commits
 
   $ hg phabsend -r 0+2+3
   abort: cannot phabsend multiple head revisions: c44b38f24a45
   (the revisions must form a linear chain)
   [255]
 
 Validate arguments with --fold
 
   $ hg phabsend --fold -r 1
   abort: cannot fold a single revision
   [255]
   $ hg phabsend --fold --no-amend -r 1::
   abort: cannot fold with --no-amend
   [255]
   $ hg phabsend --fold -r 1::
   abort: cannot fold revisions with different DREV values
   [255]
 
 Setup a series of commits to be folded, and include the Test Plan field multiple
 times to test the concatenation logic.  No Test Plan field in the last one to
 ensure missing fields are skipped.
 
   $ hg init ../folded
   $ cd ../folded
   $ cat >> .hg/hgrc <<EOF
   > [phabricator]
   > url = https://phab.mercurial-scm.org/
   > callsign = HG
   > EOF
 
   $ echo 'added' > file.txt
   $ hg ci -Aqm 'added file'
 
   $ cat > log.txt <<EOF
   > one: first commit to review
   > 
   > This file was modified with 'mod1' as its contents.
   > 
   > Test Plan:
   > LOL!  What testing?!
   > EOF
   $ echo mod1 > file.txt
   $ hg ci -l log.txt
 
   $ cat > log.txt <<EOF
   > two: second commit to review
   > 
   > This file was modified with 'mod2' as its contents.
   > 
   > Test Plan:
   > Haha! yeah, right.
   > 
   > EOF
   $ echo mod2 > file.txt
   $ hg ci -l log.txt
 
   $ echo mod3 > file.txt
   $ hg ci -m '3: a commit with no detailed message'
 
 The folding of immutable commits works...
 
   $ hg phase -r tip --public
   $ hg phabsend --fold -r 1:: --test-vcr "$VCR/phabsend-fold-immutable.json"
   D8386 - created - a959a3f69d8d: one: first commit to review
   D8386 - created - 24a4438154ba: two: second commit to review
   D8386 - created - d235829e802c: 3: a commit with no detailed message
   warning: not updating public commit 1:a959a3f69d8d
   warning: not updating public commit 2:24a4438154ba
   warning: not updating public commit 3:d235829e802c
   no newnodes to update
 
   $ hg phase -r 0 --draft --force
 
 ... as does the initial mutable fold...
 
   $ echo y | hg phabsend --fold --confirm -r 1:: \
   >          --test-vcr "$VCR/phabsend-fold-initial.json"
   NEW - a959a3f69d8d: one: first commit to review
   NEW - 24a4438154ba: two: second commit to review
   NEW - d235829e802c: 3: a commit with no detailed message
   Send the above changes to https://phab.mercurial-scm.org/ (yn)? y
   D8387 - created - a959a3f69d8d: one: first commit to review
   D8387 - created - 24a4438154ba: two: second commit to review
   D8387 - created - d235829e802c: 3: a commit with no detailed message
   updating local commit list for D8387
   new commits: ['602c4e738243', '832553266fe8', '921f8265efbd']
   saved backup bundle to $TESTTMP/folded/.hg/strip-backup/a959a3f69d8d-a4a24136-phabsend.hg
 
 ... and doesn't mangle the local commits.
 
   $ hg log -T '{rev}:{node|short}\n{indent(desc, "  ")}\n'
   3:921f8265efbd
     3: a commit with no detailed message
   
     Differential Revision: https://phab.mercurial-scm.org/D8387
   2:832553266fe8
     two: second commit to review
   
     This file was modified with 'mod2' as its contents.
   
     Test Plan:
     Haha! yeah, right.
   
     Differential Revision: https://phab.mercurial-scm.org/D8387
   1:602c4e738243
     one: first commit to review
   
     This file was modified with 'mod1' as its contents.
   
     Test Plan:
     LOL!  What testing?!
   
     Differential Revision: https://phab.mercurial-scm.org/D8387
   0:98d480e0d494
     added file
 
 Setup some obsmarkers by adding a file to the middle commit.  This stress tests
 getoldnodedrevmap() in later phabsends.
 
   $ hg up '.^'
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo 'modified' > file2.txt
   $ hg add file2.txt
   $ hg amend --config experimental.evolution=all --config extensions.amend=
   1 new orphan changesets
   $ hg up 3
   obsolete feature not enabled but 1 markers found!
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg rebase --config experimental.evolution=all --config extensions.rebase=
   note: not rebasing 2:832553266fe8 "two: second commit to review", already in destination as 4:0124e5474c88 "two: second commit to review" (tip)
   rebasing 3:921f8265efbd "3: a commit with no detailed message"
 
 When commits have changed locally, the local commit list on Phabricator is
 updated.
 
   $ echo y | hg phabsend --fold --confirm -r 1:: \
   >          --test-vcr "$VCR/phabsend-fold-updated.json"
   obsolete feature not enabled but 2 markers found!
   602c4e738243 mapped to old nodes ['602c4e738243']
   0124e5474c88 mapped to old nodes ['832553266fe8']
   e4edb1fe3565 mapped to old nodes ['921f8265efbd']
   D8387 - 602c4e738243: one: first commit to review
   D8387 - 0124e5474c88: two: second commit to review
   D8387 - e4edb1fe3565: 3: a commit with no detailed message
   Send the above changes to https://phab.mercurial-scm.org/ (yn)? y
   D8387 - updated - 602c4e738243: one: first commit to review
   D8387 - updated - 0124e5474c88: two: second commit to review
   D8387 - updated - e4edb1fe3565: 3: a commit with no detailed message
   obsolete feature not enabled but 2 markers found! (?)
   updating local commit list for D8387
   new commits: ['602c4e738243', '0124e5474c88', 'e4edb1fe3565']
   $ hg log -Tcompact
   obsolete feature not enabled but 2 markers found!
   5[tip]   e4edb1fe3565   1970-01-01 00:00 +0000   test
     3: a commit with no detailed message
   
   4:1   0124e5474c88   1970-01-01 00:00 +0000   test
     two: second commit to review
   
   1   602c4e738243   1970-01-01 00:00 +0000   test
     one: first commit to review
   
   0   98d480e0d494   1970-01-01 00:00 +0000   test
     added file
   
 When nothing has changed locally since the last phabsend, the commit list isn't
 updated, and nothing is changed locally afterward.
 
   $ hg phabsend --fold -r 1:: --test-vcr "$VCR/phabsend-fold-no-changes.json"
   obsolete feature not enabled but 2 markers found!
   602c4e738243 mapped to old nodes ['602c4e738243']
   0124e5474c88 mapped to old nodes ['0124e5474c88']
   e4edb1fe3565 mapped to old nodes ['e4edb1fe3565']
   D8387 - updated - 602c4e738243: one: first commit to review
   D8387 - updated - 0124e5474c88: two: second commit to review
   D8387 - updated - e4edb1fe3565: 3: a commit with no detailed message
   obsolete feature not enabled but 2 markers found! (?)
   local commit list for D8387 is already up-to-date
   $ hg log -Tcompact
   obsolete feature not enabled but 2 markers found!
   5[tip]   e4edb1fe3565   1970-01-01 00:00 +0000   test
     3: a commit with no detailed message
   
   4:1   0124e5474c88   1970-01-01 00:00 +0000   test
     two: second commit to review
   
   1   602c4e738243   1970-01-01 00:00 +0000   test
     one: first commit to review
   
   0   98d480e0d494   1970-01-01 00:00 +0000   test
     added file
   
 Fold will accept new revisions at the end...
 
   $ echo 'another mod' > file2.txt
   $ hg ci -m 'four: extend the fold range'
   obsolete feature not enabled but 2 markers found!
   $ hg phabsend --fold -r 1:: --test-vcr "$VCR/phabsend-fold-extend-end.json" \
   >             --config experimental.evolution=all
   602c4e738243 mapped to old nodes ['602c4e738243']
   0124e5474c88 mapped to old nodes ['0124e5474c88']
   e4edb1fe3565 mapped to old nodes ['e4edb1fe3565']
   D8387 - updated - 602c4e738243: one: first commit to review
   D8387 - updated - 0124e5474c88: two: second commit to review
   D8387 - updated - e4edb1fe3565: 3: a commit with no detailed message
   D8387 - created - 94aaae213b23: four: extend the fold range
   updating local commit list for D8387
   new commits: ['602c4e738243', '0124e5474c88', 'e4edb1fe3565', '51a04fea8707']
   $ hg log -r . -T '{desc}\n'
   four: extend the fold range
   
   Differential Revision: https://phab.mercurial-scm.org/D8387
   $ hg log -T'{rev} {if(phabreview, "{phabreview.url} {phabreview.id}")}\n' -r 1::
   obsolete feature not enabled but 3 markers found!
   1 https://phab.mercurial-scm.org/D8387 D8387
   4 https://phab.mercurial-scm.org/D8387 D8387
   5 https://phab.mercurial-scm.org/D8387 D8387
   7 https://phab.mercurial-scm.org/D8387 D8387
 
 ... and also accepts new revisions at the beginning of the range
 
 It's a bit unfortunate that not having a Differential URL on the first commit
 causes a new Differential Revision to be created, though it isn't *entirely*
 unreasonable.  At least this updates the subsequent commits.
 
 TODO: See if it can reuse the existing Differential.
 
   $ hg phabsend --fold -r 0:: --test-vcr "$VCR/phabsend-fold-extend-front.json" \
   >             --config experimental.evolution=all
   602c4e738243 mapped to old nodes ['602c4e738243']
   0124e5474c88 mapped to old nodes ['0124e5474c88']
   e4edb1fe3565 mapped to old nodes ['e4edb1fe3565']
   51a04fea8707 mapped to old nodes ['51a04fea8707']
   D8388 - created - 98d480e0d494: added file
   D8388 - updated - 602c4e738243: one: first commit to review
   D8388 - updated - 0124e5474c88: two: second commit to review
   D8388 - updated - e4edb1fe3565: 3: a commit with no detailed message
   D8388 - updated - 51a04fea8707: four: extend the fold range
   updating local commit list for D8388
   new commits: ['15e9b14b4b4c', '6320b7d714cf', '3ee132d41dbc', '30682b960804', 'ac7db67f0991']
 
   $ hg log -T '{rev}:{node|short}\n{indent(desc, "  ")}\n'
   obsolete feature not enabled but 8 markers found!
   12:ac7db67f0991
     four: extend the fold range
   
     Differential Revision: https://phab.mercurial-scm.org/D8388
   11:30682b960804
     3: a commit with no detailed message
   
     Differential Revision: https://phab.mercurial-scm.org/D8388
   10:3ee132d41dbc
     two: second commit to review
   
     This file was modified with 'mod2' as its contents.
   
     Test Plan:
     Haha! yeah, right.
   
     Differential Revision: https://phab.mercurial-scm.org/D8388
   9:6320b7d714cf
     one: first commit to review
   
     This file was modified with 'mod1' as its contents.
   
     Test Plan:
     LOL!  What testing?!
   
     Differential Revision: https://phab.mercurial-scm.org/D8388
   8:15e9b14b4b4c
     added file
   
     Differential Revision: https://phab.mercurial-scm.org/D8388
 
 Test phabsend --fold with an `hg split` at the end of the range
 
   $ echo foo > file3.txt
   $ hg add file3.txt
 
   $ hg log -r . -T '{desc}' > log.txt
   $ echo 'amended mod' > file2.txt
   $ hg ci --amend -l log.txt --config experimental.evolution=all
 
   $ cat <<EOF | hg --config extensions.split= --config ui.interactive=True \
   >                --config experimental.evolution=all split -r .
   > n
   > y
   > y
   > y
   > y
   > EOF
   diff --git a/file2.txt b/file2.txt
   1 hunks, 1 lines changed
   examine changes to 'file2.txt'?
   (enter ? for help) [Ynesfdaq?] n
   
   diff --git a/file3.txt b/file3.txt
   new file mode 100644
   examine changes to 'file3.txt'?
   (enter ? for help) [Ynesfdaq?] y
   
   @@ -0,0 +1,1 @@
   +foo
   record change 2/2 to 'file3.txt'?
   (enter ? for help) [Ynesfdaq?] y
   
   created new head
   diff --git a/file2.txt b/file2.txt
   1 hunks, 1 lines changed
   examine changes to 'file2.txt'?
   (enter ? for help) [Ynesfdaq?] y
   
   @@ -1,1 +1,1 @@
   -modified
   +amended mod
   record this change to 'file2.txt'?
   (enter ? for help) [Ynesfdaq?] y
   
   $ hg phabsend --fold -r 8:: --test-vcr "$VCR/phabsend-fold-split-end.json" \
   >             --config experimental.evolution=all
   15e9b14b4b4c mapped to old nodes ['15e9b14b4b4c']
   6320b7d714cf mapped to old nodes ['6320b7d714cf']
   3ee132d41dbc mapped to old nodes ['3ee132d41dbc']
   30682b960804 mapped to old nodes ['30682b960804']
   6bc15dc99efd mapped to old nodes ['ac7db67f0991']
   b50946d5e490 mapped to old nodes ['ac7db67f0991']
   D8388 - updated - 15e9b14b4b4c: added file
   D8388 - updated - 6320b7d714cf: one: first commit to review
   D8388 - updated - 3ee132d41dbc: two: second commit to review
   D8388 - updated - 30682b960804: 3: a commit with no detailed message
   D8388 - updated - 6bc15dc99efd: four: extend the fold range
   D8388 - updated - b50946d5e490: four: extend the fold range
   updating local commit list for D8388
   new commits: ['15e9b14b4b4c', '6320b7d714cf', '3ee132d41dbc', '30682b960804', '6bc15dc99efd', 'b50946d5e490']
 
 Test phabsend --fold with an `hg fold` at the end of the range
 
   $ hg --config experimental.evolution=all --config extensions.rebase= \
   >    rebase -r '.^' -r . -d '.^^' --collapse -l log.txt
   rebasing 14:6bc15dc99efd "four: extend the fold range"
   rebasing 15:b50946d5e490 "four: extend the fold range" (tip)
 
   $ hg phabsend --fold -r 8:: --test-vcr "$VCR/phabsend-fold-fold-end.json" \
   >             --config experimental.evolution=all
   15e9b14b4b4c mapped to old nodes ['15e9b14b4b4c']
   6320b7d714cf mapped to old nodes ['6320b7d714cf']
   3ee132d41dbc mapped to old nodes ['3ee132d41dbc']
   30682b960804 mapped to old nodes ['30682b960804']
   e919cdf3d4fe mapped to old nodes ['6bc15dc99efd', 'b50946d5e490']
   D8388 - updated - 15e9b14b4b4c: added file
   D8388 - updated - 6320b7d714cf: one: first commit to review
   D8388 - updated - 3ee132d41dbc: two: second commit to review
   D8388 - updated - 30682b960804: 3: a commit with no detailed message
   D8388 - updated - e919cdf3d4fe: four: extend the fold range
   updating local commit list for D8388
   new commits: ['15e9b14b4b4c', '6320b7d714cf', '3ee132d41dbc', '30682b960804', 'e919cdf3d4fe']
 
   $ hg log -r tip -v
   obsolete feature not enabled but 12 markers found!
   changeset:   16:e919cdf3d4fe
   tag:         tip
   parent:      11:30682b960804
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   files:       file2.txt file3.txt
   description:
   four: extend the fold range
   
   Differential Revision: https://phab.mercurial-scm.org/D8388
   
   
 
   $ cd ..