evolve: add comptability to read old evolvestate files
When a user runs `hg evolve` with old evolve where we used to write evolvestate
the old ways i.e. without using cbor, and faces conflicts, the evolve is
interrupted. If the user updates evolve before completing the evolve, that can
result in traceback as the new evolve cannot read the old evolvestate file.
The previous patch added function to read old evolvestate file and this patch
uses that when we encounter the above mentioned case.
Testing the handling of phases for `hg evolve` command
$ cat >> $HGRCPATH <<EOF
> [phases]
> publish = False
> [alias]
> glog = log -G --template='{rev} - {node|short} {desc} ({phase})\n'
> [extensions]
> EOF
$ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
Testing when there are no conflicts during evolve
$ hg init noconflict
$ cd noconflict
$ echo a>a
$ hg ci -Aqm a
$ echo b>b
$ hg ci -Aqm b
$ echo c>c
$ hg ci -Aqsm c
$ hg glog
@ 2 - 177f92b77385 c (secret)
|
o 1 - d2ae7f538514 b (draft)
|
o 0 - cb9a9f314b8b a (draft)
$ hg prev
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
[1] b
$ echo b2>b
$ hg amend
1 new orphan changesets
$ hg evolve
move:[2] c
atop:[3] b
working directory is now at 813dde83a7f3
$ hg glog
@ 4 - 813dde83a7f3 c (secret)
|
o 3 - fd89d0f19529 b (draft)
|
o 0 - cb9a9f314b8b a (draft)
$ cd ..
Testing case when there are conflicts (bug 5720)
$ hg init conflicts
$ cd conflicts
$ echo a > a
$ hg ci -Am a
adding a
$ echo b > a
$ hg ci -m b
$ echo c > a
$ hg ci -sm c
$ hg glog
@ 2 - 13833940840c c (secret)
|
o 1 - 1e6c11564562 b (draft)
|
o 0 - cb9a9f314b8b a (draft)
$ hg prev
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
[1] b
$ echo b2 > a
$ hg amend
1 new orphan changesets
$ hg glog
@ 3 - 87495ea7c9ec b (draft)
|
| * 2 - 13833940840c c (secret)
| |
| x 1 - 1e6c11564562 b (draft)
|/
o 0 - cb9a9f314b8b a (draft)
$ hg evolve
move:[2] c
atop:[3] b
merging a
warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
evolve failed!
fix conflict and run 'hg evolve --continue' or use 'hg update -C .' to abort
abort: unresolved merge conflicts (see hg help resolve)
[255]
$ hg diff
diff -r 87495ea7c9ec a
--- a/a Thu Jan 01 00:00:00 1970 +0000
+++ b/a Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +1,5 @@
+<<<<<<< destination: 87495ea7c9ec - test: b
b2
+=======
+c
+>>>>>>> evolving: 13833940840c - test: c
$ hg glog
@ 3 - 87495ea7c9ec b (draft)
|
| * 2 - 13833940840c c (secret)
| |
| x 1 - 1e6c11564562 b (draft)
|/
o 0 - cb9a9f314b8b a (draft)
$ echo c2 > a
$ hg resolve -m
(no more unresolved files)
continue: hg evolve --continue
$ hg evolve -c
evolving 2:13833940840c "c"
working directory is now at 3d2080c198e5
$ hg glog
@ 4 - 3d2080c198e5 c (secret)
|
o 3 - 87495ea7c9ec b (draft)
|
o 0 - cb9a9f314b8b a (draft)