annotate tests/test-evolve-orphan-corner-cases.t @ 6934:dd518437d4e0 stable

tests: introduce a compat-branches blacklist file

The idea behind this file is to have an easy and obvious mechanism for skipping
some tests on compatibility branches without modifying the test files
themselves or touching .gitlab-ci.yml.

Obviously, each compatibility branch can have different set of tests, and so
the contents of this file can be different on different branches.

This concept had actually existed in core for a long time, see
tests/blacklists/ directory.

=======================================================
Tests the resolution of orphan changesets: corner cases
=======================================================

Setup
=====
  $ cat >> $HGRCPATH <<EOF
  > [alias]
  > glog = log -GT "{rev}:{node|short} {desc|firstline}\n {phase} {troubles}\n\n"
  > [phases]
  > publish = False
  > [extensions]
  > rebase =
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

  $ glog() {
  >   hg log -G --template '{rev}:{node|short}@{branch}({phase}) {desc|firstline}\n' "$@"
  > }

Test to make sure that `lastsolved` always has correct value and things don't break:
------------------------------------------------------------------------------------
(before we were not updating it in case of orphan merge)

Prepare the repo:
  $ hg init orphanmergerepo
  $ cd orphanmergerepo
  $ for fn in a b c; do echo foo > $fn; hg ci -Am "added "$fn; done;
  adding a
  adding b
  adding c
Let's create a merge commit so that we can create orphan merge later:
  $ hg up 1 -q
  $ echo feature > f
  $ hg ci -Am "added feature f"
  adding f
  created new head
  $ hg merge
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m "merge feature branch"
  $ glog
  @    4:2c0a98d38026@default(draft) merge feature branch
  |\
  | o  3:4c33e511041e@default(draft) added feature f
  | |
  o |  2:8be98ac1a569@default(draft) added c
  |/
  o  1:80e6d2c47cfe@default(draft) added b
  |
  o  0:f7ad41964313@default(draft) added a
  

Now make the parents of merge commit obsolete to get a orphan merge:
  $ hg up 2 -q
  $ echo "fixit" > c
  $ hg ci --amend -m "updated c"
  1 new orphan changesets
  $ hg up 3 -q
  $ echo "fixit" > c
  $ hg ci --amend -m "updated f"
  $ glog
  @  6:086d9bedcd75@default(draft) updated f
  |
  | o  5:f84f2c548fbc@default(draft) updated c
  |/
  | *    4:2c0a98d38026@default(draft) merge feature branch
  | |\
  +---x  3:4c33e511041e@default(draft) added feature f
  | |
  | x  2:8be98ac1a569@default(draft) added c
  |/
  o  1:80e6d2c47cfe@default(draft) added b
  |
  o  0:f7ad41964313@default(draft) added a
  

To check `lastsolved` contain right value after completion of orphan-merge
resolution there should be one more instability to be evolved; lets create one:
  $ hg up 1 -q
  $ echo d > d
  $ hg ci -Am "added d"
  adding c
  adding d
  created new head
  $ echo e > e
  $ hg ci -Am "added e"
  adding e
  $ hg up .^
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo "updated d" >> d
  $ hg ci --amend -m "updated d"
  1 new orphan changesets
  $ glog
  @  9:7c4d1834c346@default(draft) updated d
  |
  | *  8:421f7614462a@default(draft) added e
  | |
  | x  7:afe5acea1990@default(draft) added d
  |/
  | o  6:086d9bedcd75@default(draft) updated f
  |/
  | o  5:f84f2c548fbc@default(draft) updated c
  |/
  | *    4:2c0a98d38026@default(draft) merge feature branch
  | |\
  +---x  3:4c33e511041e@default(draft) added feature f
  | |
  | x  2:8be98ac1a569@default(draft) added c
  |/
  o  1:80e6d2c47cfe@default(draft) added b
  |
  o  0:f7ad41964313@default(draft) added a
  
Now we have one orphan merge and one more orphan cset that we just created.
Lets evolve:
  $ hg evolve --all --any
  move:[4] merge feature branch
  atop:[5] updated c
  move:[10] merge feature branch
  atop:[6] updated f
  move:[8] added e
  atop:[9] updated d