comparison tests/test-fix.t @ 43962:eebdd6709868

fix: fix handling of merge commits by using overlayworkingctx

Most of this code was conceptually copied from what rebase does, with one small
difference: hgext.rebaserev.rebase uses branchmerge=True, while I had to use
branchmerge=False, or else it got really confused about updating to the same
revision in some situations. I believe that the difference is that rebase is
always dealing with *some* form of update - it never gets to mergemod.update if
the source and destination are the same, while we can encounter that situation
with fix. This may imply that this code has some issues with named branches that
should be investigated.

Differential Revision: https://phab.mercurial-scm.org/D7703

43961:b69d5f3a41d0

  $ cat baz
  Line ranges:
  2 through 2

  $ cd ..

43962:eebdd6709868

  $ cat baz
  Line ranges:
  2 through 2

  $ cd ..

Test various cases around merges. We were previously dropping files if they were
created on only the p2 side of the merge, so let's test permutations of:
*   added, was fixed
*   added, considered for fixing but was already good
*   added, not considered for fixing
*   modified, was fixed
*   modified, considered for fixing but was already good
*   modified, not considered for fixing

Before the bug was fixed where we would drop files, this test demonstrated the
following issues:
*   new_in_r1.ignored, new_in_r1_already_good.changed, and
>   mod_in_r1_already_good.changed were NOT in the manifest for the merge commit
*   mod_in_r1.ignored had its contents from r0, NOT r1.

We're also setting a named branch for every commit to demonstrate that the
branch is kept intact and there aren't issues updating to another branch in the
middle of fix.

  $ hg init merge_keeps_files
  $ cd merge_keeps_files
  $ for f in r0 mod_in_r1 mod_in_r2 mod_in_merge mod_in_child; do
  >   for c in changed whole ignored; do
  >     printf "hello\n" > $f.$c
  >   done
  >   printf "HELLO\n" > "mod_in_${f}_already_good.changed"
  > done
  $ hg branch -q r0
  $ hg ci -Aqm 'r0'
  $ hg phase -p
  $ make_test_files() {
  >   printf "world\n" >> "mod_in_$1.changed"
  >   printf "world\n" >> "mod_in_$1.whole"
  >   printf "world\n" >> "mod_in_$1.ignored"
  >   printf "WORLD\n" >> "mod_in_$1_already_good.changed"
  >   printf "new in $1\n" > "new_in_$1.changed"
  >   printf "new in $1\n" > "new_in_$1.whole"
  >   printf "new in $1\n" > "new_in_$1.ignored"
  >   printf "ALREADY GOOD, NEW IN THIS REV\n" > "new_in_$1_already_good.changed"
  > }
  $ make_test_commit() {
  >   make_test_files "$1"
  >   hg branch -q "$1"
  >   hg ci -Aqm "$2"
  > }
  $ make_test_commit r1 "merge me, pt1"
  $ hg co -q ".^"
  $ make_test_commit r2 "merge me, pt2"
  $ hg merge -qr 1
  $ make_test_commit merge "evil merge"
  $ make_test_commit child "child of merge"
  $ make_test_files wdir
  $ hg fix -r 'not public()' -w
  $ hg log -G -T'{rev}:{shortest(node,8)}: branch:{branch} desc:{desc}'
  @  8:c22ce900: branch:child desc:child of merge
  |
  o    7:5a30615a: branch:merge desc:evil merge
  |\
  | o  6:4e5acdc4: branch:r2 desc:merge me, pt2
  | |
  o |  5:eea01878: branch:r1 desc:merge me, pt1
  |/
  o  0:0c548d87: branch:r0 desc:r0
  
  $ hg files -r tip
  mod_in_child.changed
  mod_in_child.ignored
  mod_in_child.whole
  mod_in_child_already_good.changed
  mod_in_merge.changed
  mod_in_merge.ignored
  mod_in_merge.whole
  mod_in_merge_already_good.changed
  mod_in_mod_in_child_already_good.changed
  mod_in_mod_in_merge_already_good.changed
  mod_in_mod_in_r1_already_good.changed
  mod_in_mod_in_r2_already_good.changed
  mod_in_r0_already_good.changed
  mod_in_r1.changed
  mod_in_r1.ignored
  mod_in_r1.whole
  mod_in_r1_already_good.changed
  mod_in_r2.changed
  mod_in_r2.ignored
  mod_in_r2.whole
  mod_in_r2_already_good.changed
  new_in_child.changed
  new_in_child.ignored
  new_in_child.whole
  new_in_child_already_good.changed
  new_in_merge.changed
  new_in_merge.ignored
  new_in_merge.whole
  new_in_merge_already_good.changed
  new_in_r1.changed
  new_in_r1.ignored
  new_in_r1.whole
  new_in_r1_already_good.changed
  new_in_r2.changed
  new_in_r2.ignored
  new_in_r2.whole
  new_in_r2_already_good.changed
  r0.changed
  r0.ignored
  r0.whole
  $ for f in "$(hg files -r tip)"; do hg cat -r tip $f -T'{path}:\n{data}\n'; done
  mod_in_child.changed:
  hello
  WORLD
  
  mod_in_child.ignored:
  hello
  world
  
  mod_in_child.whole:
  HELLO
  WORLD
  
  mod_in_child_already_good.changed:
  WORLD
  
  mod_in_merge.changed:
  hello
  WORLD
  
  mod_in_merge.ignored:
  hello
  world
  
  mod_in_merge.whole:
  HELLO
  WORLD
  
  mod_in_merge_already_good.changed:
  WORLD
  
  mod_in_mod_in_child_already_good.changed:
  HELLO
  
  mod_in_mod_in_merge_already_good.changed:
  HELLO
  
  mod_in_mod_in_r1_already_good.changed:
  HELLO
  
  mod_in_mod_in_r2_already_good.changed:
  HELLO
  
  mod_in_r0_already_good.changed:
  HELLO
  
  mod_in_r1.changed:
  hello
  WORLD
  
  mod_in_r1.ignored:
  hello
  world
  
  mod_in_r1.whole:
  HELLO
  WORLD
  
  mod_in_r1_already_good.changed:
  WORLD
  
  mod_in_r2.changed:
  hello
  WORLD
  
  mod_in_r2.ignored:
  hello
  world
  
  mod_in_r2.whole:
  HELLO
  WORLD
  
  mod_in_r2_already_good.changed:
  WORLD
  
  new_in_child.changed:
  NEW IN CHILD
  
  new_in_child.ignored:
  new in child
  
  new_in_child.whole:
  NEW IN CHILD
  
  new_in_child_already_good.changed:
  ALREADY GOOD, NEW IN THIS REV
  
  new_in_merge.changed:
  NEW IN MERGE
  
  new_in_merge.ignored:
  new in merge
  
  new_in_merge.whole:
  NEW IN MERGE
  
  new_in_merge_already_good.changed:
  ALREADY GOOD, NEW IN THIS REV
  
  new_in_r1.changed:
  NEW IN R1
  
  new_in_r1.ignored:
  new in r1
  
  new_in_r1.whole:
  NEW IN R1
  
  new_in_r1_already_good.changed:
  ALREADY GOOD, NEW IN THIS REV
  
  new_in_r2.changed:
  NEW IN R2
  
  new_in_r2.ignored:
  new in r2
  
  new_in_r2.whole:
  NEW IN R2
  
  new_in_r2_already_good.changed:
  ALREADY GOOD, NEW IN THIS REV
  
  r0.changed:
  hello
  
  r0.ignored:
  hello
  
  r0.whole:
  hello