tests/test-merge7.t

automation: refresh requirements

I'm hitting errors installing the old version of cffi due to an
apparent issue where older versions of cffi aren't compatible with
the modern Clang I'm using. So let's upgrade packages to unbreak
things and to keep things modern.

Differential Revision: https://phab.mercurial-scm.org/D12629

initial
  $ hg init test-a
  $ cd test-a
  $ cat >test.txt <<"EOF"
  > 1
  > 2
  > 3
  > EOF
  $ hg add test.txt
  $ hg commit -m "Initial"

clone
  $ cd ..
  $ hg clone test-a test-b
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

change test-a
  $ cd test-a
  $ cat >test.txt <<"EOF"
  > one
  > two
  > three
  > EOF
  $ hg commit -m "Numbers as words"

change test-b
  $ cd ../test-b
  $ cat >test.txt <<"EOF"
  > 1
  > 2.5
  > 3
  > EOF
  $ hg commit -m "2 -> 2.5"

now pull and merge from test-a
  $ hg pull ../test-a
  pulling from ../test-a
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  new changesets 96b70246a118
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg merge
  merging test.txt
  warning: conflicts while merging test.txt! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 0 files removed, 1 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
  [1]
resolve conflict
  $ cat >test.txt <<"EOF"
  > one
  > two-point-five
  > three
  > EOF
  $ rm -f *.orig
  $ hg resolve -m test.txt
  (no more unresolved files)
  $ hg commit -m "Merge 1"

change test-a again
  $ cd ../test-a
  $ cat >test.txt <<"EOF"
  > one
  > two-point-one
  > three
  > EOF
  $ hg commit -m "two -> two-point-one"

pull and merge from test-a again
  $ cd ../test-b
  $ hg pull ../test-a
  pulling from ../test-a
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  new changesets 40d11a4173a8
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg merge --debug
  resolving manifests
   branchmerge: True, force: False, partial: False
   ancestor: 96b70246a118, local: 50c3a7e29886+, remote: 40d11a4173a8
  starting 4 threads for background file closing (?)
   preserving test.txt for resolve of test.txt
   test.txt: versions differ -> m
  picked tool ':merge' for test.txt (binary False symlink False changedelete False)
  merging test.txt
  my test.txt@50c3a7e29886+ other test.txt@40d11a4173a8 ancestor test.txt@96b70246a118
  warning: conflicts while merging test.txt! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 0 files removed, 1 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
  [1]

  $ cat test.txt
  one
  <<<<<<< working copy: 50c3a7e29886 - test: Merge 1
  two-point-five
  =======
  two-point-one
  >>>>>>> merge rev:    40d11a4173a8 - test: two -> two-point-one
  three

  $ hg debugindex test.txt
     rev linkrev       nodeid    p1-nodeid    p2-nodeid
       0       0 01365c4cca56 000000000000 000000000000
       1       1 7b013192566a 01365c4cca56 000000000000
       2       2 8fe46a3eb557 01365c4cca56 000000000000
       3       3 fc3148072371 7b013192566a 8fe46a3eb557
       4       4 d40249267ae3 8fe46a3eb557 000000000000

  $ hg log
  changeset:   4:40d11a4173a8
  tag:         tip
  parent:      2:96b70246a118
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     two -> two-point-one
  
  changeset:   3:50c3a7e29886
  parent:      1:d1e159716d41
  parent:      2:96b70246a118
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     Merge 1
  
  changeset:   2:96b70246a118
  parent:      0:b1832b9d912a
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     Numbers as words
  
  changeset:   1:d1e159716d41
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     2 -> 2.5
  
  changeset:   0:b1832b9d912a
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     Initial
  

  $ cd ..