view tests/test-evolve-orphan-split.t @ 6935:954d7ea5cd67 stable tip

stack: when stack base is obsolete, pick any successor, even if at random

There are situations when s0 is obsolete and we also cannot pick just one
successor for it to use in stack. In such a case, let's pick the "latest"
successor from the first set.

We're assuming that obsutil.successorssets() returns data in the same order (it
should, since it makes sure to sort data internally). Keeping that in mind,
while the successor picked for s0 by this code is not based on any sort of
sophisticated logic, it should nonetheless be the same every time.

This patch is probably not going to completely break anything that was
previously working fine, because the previous behavior was to just abort with
an exception.

** Testing resolution of orphans by `hg evolve` where an obsolete changeset has
multiple successors **

  $ . $TESTDIR/testlib/common.sh

  $ cat >> $HGRCPATH <<EOF
  > [ui]
  > interactive = True
  > [extensions]
  > rebase =
  > evolve =
  > EOF

Repo Setup

  $ hg init repo
  $ cd repo
  $ echo ".*\.orig" > .hgignore
  $ hg add .hgignore
  $ hg ci -m "added hgignore"

An orphan changeset with parent got split
-----------------------------------------

  $ for ch in a b c; do echo foo > $ch; done;

  $ hg add a b
  $ hg ci -m "added a and b"
  $ hg add c
  $ hg ci -m "added c"

  $ hg glog
  @  2:86e1ebf1ca61 added c
  |   () draft
  o  1:d0ddb614efbd added a and b
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

  $ hg split -r 1 <<EOF
  > y
  > y
  > n
  > c
  > EOF
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  adding a
  adding b
  diff --git a/a b/a
  new file mode 100644
  examine changes to 'a'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +foo
  record change 1/2 to 'a'?
  (enter ? for help) [Ynesfdaq?] y
  
  diff --git a/b b/b
  new file mode 100644
  examine changes to 'b'?
  (enter ? for help) [Ynesfdaq?] n
  
  created new head
  continue splitting? [Ycdq?] c
  1 new orphan changesets

  $ hg glog
  @  4:8b179cffc81c added a and b
  |   () draft
  o  3:bd3735d4dab0 added a and b
  |   () draft
  | *  2:86e1ebf1ca61 added c
  | |   () draft orphan
  | x  1:d0ddb614efbd added a and b
  |/    () draft
  o  0:8fa14d15e168 added hgignore
      () draft

  $ hg evolve --update
  move:[2] added c
  atop:[4] added a and b
  working directory is now at af13f0560b31

  $ hg glog
  @  5:af13f0560b31 added c
  |   () draft
  o  4:8b179cffc81c added a and b
  |   () draft
  o  3:bd3735d4dab0 added a and b
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

When the successors does not form a linear chain and are multiple heads
-----------------------------------------------------------------------

  $ hg fold -r .^^::. --exact -m "added a b c"
  3 changesets folded
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg glog
  @  6:f89e4764f2ed added a b c
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft
  $ echo foo > d
  $ hg ci -Aqm "added d"

  $ hg glog
  @  7:d48a30875f01 added d
  |   () draft
  o  6:f89e4764f2ed added a b c
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft
  $ hg prev
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  [6] added a b c
  $ hg split -r . <<EOF
  > y
  > n
  > y
  > y
  > y
  > y
  > c
  > EOF
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  adding a
  adding b
  adding c
  diff --git a/a b/a
  new file mode 100644
  examine changes to 'a'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +foo
  record change 1/3 to 'a'?
  (enter ? for help) [Ynesfdaq?] n
  
  diff --git a/b b/b
  new file mode 100644
  examine changes to 'b'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +foo
  record change 2/3 to 'b'?
  (enter ? for help) [Ynesfdaq?] y
  
  diff --git a/c b/c
  new file mode 100644
  examine changes to 'c'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +foo
  record change 3/3 to 'c'?
  (enter ? for help) [Ynesfdaq?] y
  
  created new head
  continue splitting? [Ycdq?] c
  1 new orphan changesets

  $ hg glog
  @  9:c0fbf8aaf6c4 added a b c
  |   () draft
  o  8:f2632392aefe added a b c
  |   () draft
  | *  7:d48a30875f01 added d
  | |   () draft orphan
  | x  6:f89e4764f2ed added a b c
  |/    () draft
  o  0:8fa14d15e168 added hgignore
      () draft

  $ hg rebase -r . -d 8fa14d15e168
  rebasing 9:c0fbf8aaf6c4 tip "added a b c"
  $ hg glog
  @  10:7f87764e5b64 added a b c
  |   () draft
  | o  8:f2632392aefe added a b c
  |/    () draft
  | *  7:d48a30875f01 added d
  | |   () draft orphan
  | x  6:f89e4764f2ed added a b c
  |/    () draft
  o  0:8fa14d15e168 added hgignore
      () draft

  $ hg evolve --dry-run <<EOF
  > 1
  > EOF
  changeset f89e4764f2ed split over multiple topological branches, choose an evolve destination:
  1: [f2632392aefe] added a b c
  2: [7f87764e5b64] added a b c
  q: quit the prompt
  enter the index of the revision you want to select: 1
  move:[7] added d
  atop:[8] added a b c
  hg rebase -r d48a30875f01 -d f2632392aefe

  $ hg evolve --dry-run <<EOF
  > 2
  > EOF
  changeset f89e4764f2ed split over multiple topological branches, choose an evolve destination:
  1: [f2632392aefe] added a b c
  2: [7f87764e5b64] added a b c
  q: quit the prompt
  enter the index of the revision you want to select: 2
  move:[7] added d
  atop:[10] added a b c
  hg rebase -r d48a30875f01 -d 7f87764e5b64

Testing the interactive prompt with invalid values first
(this should move its own test file when we use it at multiple places)

  $ hg evolve --all <<EOF
  > foo
  > EOF
  changeset f89e4764f2ed split over multiple topological branches, choose an evolve destination:
  1: [f2632392aefe] added a b c
  2: [7f87764e5b64] added a b c
  q: quit the prompt
  enter the index of the revision you want to select: foo
  invalid value 'foo' entered for index
  could not solve instability, ambiguous destination: parent split across two branches

  $ hg evolve --all <<EOF
  > 4
  > EOF
  changeset f89e4764f2ed split over multiple topological branches, choose an evolve destination:
  1: [f2632392aefe] added a b c
  2: [7f87764e5b64] added a b c
  q: quit the prompt
  enter the index of the revision you want to select: 4
  invalid value '4' entered for index
  could not solve instability, ambiguous destination: parent split across two branches

  $ hg evolve --all <<EOF
  > -1
  > EOF
  changeset f89e4764f2ed split over multiple topological branches, choose an evolve destination:
  1: [f2632392aefe] added a b c
  2: [7f87764e5b64] added a b c
  q: quit the prompt
  enter the index of the revision you want to select: -1
  invalid value '-1' entered for index
  could not solve instability, ambiguous destination: parent split across two branches

  $ hg evolve --all <<EOF
  > q
  > EOF
  changeset f89e4764f2ed split over multiple topological branches, choose an evolve destination:
  1: [f2632392aefe] added a b c
  2: [7f87764e5b64] added a b c
  q: quit the prompt
  enter the index of the revision you want to select: q
  could not solve instability, ambiguous destination: parent split across two branches

Doing the evolve with the interactive prompt

  $ hg evolve --all <<EOF
  > 1
  > EOF
  changeset f89e4764f2ed split over multiple topological branches, choose an evolve destination:
  1: [f2632392aefe] added a b c
  2: [7f87764e5b64] added a b c
  q: quit the prompt
  enter the index of the revision you want to select: 1
  move:[7] added d
  atop:[8] added a b c