tests/test-rename-dir-merge.t

subrepo: handle svn tracked/unknown directory collisions

This happens more often than expected. Say you have an svn subrepository with
python code. Python would have generated unknown .pyc files. Now, you rebase
this setup on a revision where a directory containing python code does not
exist. Subversion is first asked to remove this directory when updating, but
will not because it contains untracked items. Then it will have to bring back
the directory after the merge but will fail because it now collides with an
untracked directory.

Using --force is not very elegant but it is much simpler than rewriting our own
purge command for subversion.

  $ mkdir t
  $ cd t
  $ hg init

  $ mkdir a
  $ echo foo > a/a
  $ echo bar > a/b
  $ hg ci -Am "0"
  adding a/a
  adding a/b

  $ hg co -C 0
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg mv a b
  moving a/a to b/a
  moving a/b to b/b
  $ hg ci -m "1 mv a/ b/"

  $ hg co -C 0
  2 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo baz > a/c
  $ echo quux > a/d
  $ hg add a/c
  $ hg ci -m "2 add a/c"
  created new head

  $ hg merge --debug 1
    searching for copies back to rev 1
    unmatched files in local:
     a/c
     a/d
    unmatched files in other:
     b/a
     b/b
    all copies found (* = to merge, ! = divergent):
     b/a -> a/a 
     b/b -> a/b 
    checking for directory renames
    dir a/ -> b/
    file a/c -> b/c
    file a/d -> b/d
  resolving manifests
   overwrite None partial False
   ancestor f9b20c0d4c51 local ce36d17b18fb+ remote 397f8b00a740
   a/d: remote renamed directory to b/d -> d
   a/c: remote renamed directory to b/c -> d
   a/b: other deleted -> r
   a/a: other deleted -> r
   b/a: remote created -> g
   b/b: remote created -> g
  updating: a/a 1/6 files (16.67%)
  removing a/a
  updating: a/b 2/6 files (33.33%)
  removing a/b
  updating: a/c 3/6 files (50.00%)
  moving a/c to b/c
  updating: a/d 4/6 files (66.67%)
  moving a/d to b/d
  updating: b/a 5/6 files (83.33%)
  getting b/a
  updating: b/b 6/6 files (100.00%)
  getting b/b
  4 files updated, 0 files merged, 2 files removed, 0 files unresolved
  (branch merge, don't forget to commit)

  $ echo a/* b/*
  a/* b/a b/b b/c b/d
  $ hg st -C
  M b/a
  M b/b
  A b/c
    a/c
  R a/a
  R a/b
  R a/c
  ? b/d
  $ hg ci -m "3 merge 2+1"
  $ hg debugrename b/c
  b/c renamed from a/c:354ae8da6e890359ef49ade27b68bbc361f3ca88

  $ hg co -C 1
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg merge --debug 2
    searching for copies back to rev 1
    unmatched files in local:
     b/a
     b/b
     b/d
    unmatched files in other:
     a/c
    all copies found (* = to merge, ! = divergent):
     b/a -> a/a 
     b/b -> a/b 
    checking for directory renames
    dir a/ -> b/
    file a/c -> b/c
  resolving manifests
   overwrite None partial False
   ancestor f9b20c0d4c51 local 397f8b00a740+ remote ce36d17b18fb
   None: local renamed directory to b/c -> d
  updating:None 1/1 files (100.00%)
  getting a/c to b/c
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)

  $ echo a/* b/*
  a/* b/a b/b b/c b/d
  $ hg st -C
  A b/c
    a/c
  ? b/d
  $ hg ci -m "4 merge 1+2"
  created new head
  $ hg debugrename b/c
  b/c renamed from a/c:354ae8da6e890359ef49ade27b68bbc361f3ca88


Second scenario with two repos:

  $ cd ..
  $ mkdir r1
  $ cd r1
  $ hg init
  $ mkdir a
  $ echo foo > a/f
  $ hg add a
  adding a/f
  $ hg ci -m "a/f == foo"
  $ cd ..

  $ hg clone r1 r2
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd r2
  $ hg mv a b
  moving a/f to b/f
  $ echo foo1 > b/f
  $ hg ci -m" a -> b, b/f == foo1"
  $ cd ..

  $ cd r1
  $ mkdir a/aa
  $ echo bar > a/aa/g
  $ hg add a/aa
  adding a/aa/g
  $ hg ci -m "a/aa/g"
  $ hg pull ../r2
  pulling from ../r2
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  (run 'hg heads' to see heads, 'hg merge' to merge)

  $ hg merge
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)

  $ hg st -C
  M b/f
  A b/aa/g
    a/aa/g
  R a/aa/g
  R a/f