view tests/test-unstable-orphan.t @ 4500:cfcb7eedc666

evolve: use merge.update() for resolving phase divergence

Iterating over the manifest when tree manifests and narrowness is in
play produces entries for paths outside the narrowspec that represent
trees. For example, if the tests/ directory of the hg repo was not in
the narrowspec (and the hg repo was using tree manifests, which it
doesn't), then there would be a "tests/" entry in the manifest. The
merge code deals with some of these cases. For example, it's valid to
do a merge if only the local side changes directories outside the
narrowspec. That allows rebasing a local commit onto a public commit
that had changes to the excluded paths to work.

However, _resolvephasedivergent() was iterating of the manifests,
which resulted in crashes for some of our users when they tried to
resolve phase-divergent commits (actually content-divergent commits
that became phase-divergent after the intermediate rebase). We can fix
that by relying on merge.update(), since that already handles this
case.

==================================
Test for "orphan" type instability
==================================

This file gather test case around the "orphan" changeset instability. This
instability happens when a changesets has obsolete ancestors.

  $ cat >> $HGRCPATH <<EOF
  > [defaults]
  > amend=-d "0 0"
  > fold=-d "0 0"
  > [web]
  > push_ssl = false
  > allow_push = *
  > [phases]
  > publish = False
  > [diff]
  > git = 1
  > unified = 0
  > [ui]
  > logtemplate = {rev}:{node|short}@{branch}({phase}) {desc|firstline}\n
  > [extensions]
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
  $ mkcommit() {
  >    echo "$1" > "$1"
  >    hg add "$1"
  >    hg ci -m "add $1"
  > }

  $ mkstack() {
  >    # Creates a stack of commit based on $1 with messages from $2, $3 ..
  >    hg update "$1" -C
  >    shift
  >    mkcommits $*
  > }

  $ mkcommits() {
  >   for i in $@; do mkcommit $i ; done
  > }

orphan parent is obsolete with a single successor
=================================================

Test orphan resolution for a changeset orphan because its parent is obsolete
with one successor.

  $ hg init test1
  $ cd test1
  $ mkcommits _a _b _c
  $ hg up "desc(_b)"
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg amend -m "bprime"
  1 new orphan changesets
  $ hg log -G
  @  3:36050226a9b9@default(draft) bprime
  |
  | *  2:102002290587@default(draft) add _c
  | |
  | x  1:37445b16603b@default(draft) add _b
  |/
  o  0:135f39f4bd78@default(draft) add _a
  

  $ hg evo --all --any --orphan
  move:[2] add _c
  atop:[3] bprime
  working directory is now at fdcf3523a74d
  $ hg log -G
  @  4:fdcf3523a74d@default(draft) add _c
  |
  o  3:36050226a9b9@default(draft) bprime
  |
  o  0:135f39f4bd78@default(draft) add _a
  

  $ cd ..


orphan parent is obsolete with a multiple successors (reversed order)
=====================================================================

Test orphan resolution for a changeset orphan because its parent is obsolete
with multiple successors on the same branch but in reverse order (cross-split).

  $ hg init test5
  $ cd test5
  $ mkcommits _a _b _c
  $ hg up "desc(_a)"
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ mkcommits bprimesplit1 bprimesplit2
  created new head
  $ hg prune "desc(_b)" -s "desc(bprimesplit1) + desc(bprimesplit2)" --split
  1 changesets pruned
  1 new orphan changesets
  $ hg up "desc(_a)"
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ mkcommits bsecondsplit1 bsecondsplit2
  created new head
  $ hg prune "desc(bprimesplit1)" -s "desc(bsecondsplit2)"
  1 changesets pruned
  1 new orphan changesets
  $ hg prune "desc(bprimesplit2)" -s "desc(bsecondsplit1)"
  1 changesets pruned
  $ hg log -G
  @  6:59b942dbda14@default(draft) add bsecondsplit2
  |
  o  5:8ffdae67d696@default(draft) add bsecondsplit1
  |
  | *  2:102002290587@default(draft) add _c
  | |
  | x  1:37445b16603b@default(draft) add _b
  |/
  o  0:135f39f4bd78@default(draft) add _a
  

  $ hg evo --all --any --orphan
  move:[2] add _c
  atop:[6] add bsecondsplit2
  working directory is now at 98e3f21461ff
  $ hg log -G
  @  7:98e3f21461ff@default(draft) add _c
  |
  o  6:59b942dbda14@default(draft) add bsecondsplit2
  |
  o  5:8ffdae67d696@default(draft) add bsecondsplit1
  |
  o  0:135f39f4bd78@default(draft) add _a
  

  $ cd ..