=====================================================

Test Copy tracing for chain of copies involving merge

=====================================================

This test files covers copies/rename case for a chains of commit where merges

are involved. It cheks we do not have unwanted update of behavior and that the

different options to retrieve copies behave correctly.

Setup

=====

use git diff to see rename

  $ cat << EOF >> $HGRCPATH

  > [diff]

  > git=yes

  > [ui]

  > logtemplate={rev} {desc}]\n

  > EOF

  $ hg init repo-chain

  $ cd repo-chain

Add some linear rename initialy

  $ touch a b h

  $ hg ci -Am 'i-0 initial commit: a b h'

  adding a

  adding b

  adding h

  $ hg mv a c

  $ hg ci -Am 'i-1: a -move-> c'

  $ hg mv c d

  $ hg ci -Am 'i-2: c -move-> d'

  $ hg log -G

  @  2 i-2: c -move-> d]

  |

  o  1 i-1: a -move-> c]

  |

  o  0 i-0 initial commit: a b h]

And having another branch with renames on the other side

  $ hg mv d e

  $ hg ci -Am 'a-1: d -move-> e'

  $ hg mv e f

  $ hg ci -Am 'a-2: e -move-> f'

  $ hg log -G --rev '::.'

  @  4 a-2: e -move-> f]

  |

  o  3 a-1: d -move-> e]

  |

  o  2 i-2: c -move-> d]

  |

  o  1 i-1: a -move-> c]

  |

  o  0 i-0 initial commit: a b h]

Have a branching with nothing on one side

  $ hg up 'desc("i-2")'

  1 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ echo foo > b

  $ hg ci -m 'b-1: b update'

  created new head

  $ hg log -G --rev '::.'

  @  5 b-1: b update]

  |

  o  2 i-2: c -move-> d]

  |

  o  1 i-1: a -move-> c]

  |

  o  0 i-0 initial commit: a b h]

Merge the two branches we just defined (in both directions)

- one with change to an unrelated file

- one with renames in them

  $ hg up 'desc("b-1")'

  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg merge 'desc("a-2")'

  1 files updated, 0 files merged, 1 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg ci -m 'mBAm-0 simple merge - one way'

  $ hg up 'desc("a-2")'

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg merge 'desc("b-1")'

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg ci -m 'mABm-0 simple merge - the other way'

  created new head

  $ hg log -G --rev '::(desc("mABm")+desc("mBAm"))'

  @    7 mABm-0 simple merge - the other way]

  |\

  +---o  6 mBAm-0 simple merge - one way]

  | |/

  | o  5 b-1: b update]

  | |

  o |  4 a-2: e -move-> f]

  | |

  o |  3 a-1: d -move-> e]

  |/

  o  2 i-2: c -move-> d]

  |

  o  1 i-1: a -move-> c]

  |

  o  0 i-0 initial commit: a b h]

Create a branch that delete a file previous renamed

  $ hg up 'desc("i-2")'

  2 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ hg rm d

  $ hg ci -m 'c-1 delete d'

  created new head

  $ hg log -G --rev '::.'

  @  8 c-1 delete d]

  |

  o  2 i-2: c -move-> d]

  |

  o  1 i-1: a -move-> c]

  |

  o  0 i-0 initial commit: a b h]

Merge:

- one with change to an unrelated file

- one deleting the change

and recreate an unrelated file after the merge

  $ hg up 'desc("b-1")'

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg merge 'desc("c-1")'

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg ci -m 'mBCm-0 simple merge - one way'

  $ echo bar > d

  $ hg add d

  $ hg ci -m 'mBCm-1 re-add d'

  $ hg up 'desc("c-1")'

  1 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ hg merge 'desc("b-1")'

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg ci -m 'mCBm-0 simple merge - the other way'

  created new head

  $ echo bar > d

  $ hg add d

  $ hg ci -m 'mCBm-1 re-add d'

  $ hg log -G --rev '::(desc("mCBm")+desc("mBCm"))'

  @  12 mCBm-1 re-add d]

  |

  o    11 mCBm-0 simple merge - the other way]

  |\

  | | o  10 mBCm-1 re-add d]

  | | |

  +---o  9 mBCm-0 simple merge - one way]

  | |/

  | o  8 c-1 delete d]

  | |

  o |  5 b-1: b update]

  |/

  o  2 i-2: c -move-> d]

  |

  o  1 i-1: a -move-> c]

  |

  o  0 i-0 initial commit: a b h]

Create a branch that delete a file previous renamed and recreate it

  $ hg up 'desc("i-2")'

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg rm d

  $ hg ci -m 'd-1 delete d'

  created new head

  $ echo bar > d

  $ hg add d

  $ hg ci -m 'd-2 re-add d'

  $ hg log -G --rev '::.'

  @  14 d-2 re-add d]

  |

  o  13 d-1 delete d]

  |

  o  2 i-2: c -move-> d]

  |

  o  1 i-1: a -move-> c]

  |

  o  0 i-0 initial commit: a b h]

Merge:

- one with change to an unrelated file

- one deleting and recreating the file

Note:

| In this case, the merge get conflicting information since on one side we have

| a "brand new" d. and one the other one we have "d renamed from c (itself

| renamed from c)".

|

| The current code arbitrarily pick one side

  $ hg up 'desc("b-1")'

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg merge 'desc("d-2")'

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg ci -m 'mBDm-0 simple merge - one way'

  $ hg up 'desc("d-2")'

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg merge 'desc("b-1")'

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg ci -m 'mDBm-0 simple merge - the other way'

  created new head

  $ hg log -G --rev '::(desc("mDBm")+desc("mBDm"))'

  @    16 mDBm-0 simple merge - the other way]

  |\

  +---o  15 mBDm-0 simple merge - one way]

  | |/

  | o  14 d-2 re-add d]

  | |

  | o  13 d-1 delete d]

  | |

  o |  5 b-1: b update]

  |/

  o  2 i-2: c -move-> d]

  |

  o  1 i-1: a -move-> c]

  |

  o  0 i-0 initial commit: a b h]

Having another branch renaming a different file to the same filename as another

  $ hg up 'desc("i-2")'

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg mv b g

  $ hg ci -m 'e-1 b -move-> g'

  created new head

  $ hg mv g f

  $ hg ci -m 'e-2 g -move-> f'

  $ hg log -G --rev '::.'

  @  18 e-2 g -move-> f]

  |

  o  17 e-1 b -move-> g]

  |

  o  2 i-2: c -move-> d]

  |

  o  1 i-1: a -move-> c]

  |

  o  0 i-0 initial commit: a b h]

Merge:

- the "e-" branch renaming b to f (through 'g')

- the "a-" branch renaming d to f (through e)

  $ hg up 'desc("a-2")'

  2 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ hg merge 'desc("e-2")'

  1 files updated, 0 files merged, 1 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg ci -m 'mAEm-0 simple merge - one way'

  $ hg up 'desc("e-2")'

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg merge 'desc("a-2")'

  1 files updated, 0 files merged, 1 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg ci -m 'mEAm-0 simple merge - the other way'

  created new head

  $ hg log -G --rev '::(desc("mAEm")+desc("mEAm"))'

  @    20 mEAm-0 simple merge - the other way]

  |\

  +---o  19 mAEm-0 simple merge - one way]

  | |/

  | o  18 e-2 g -move-> f]

  | |

  | o  17 e-1 b -move-> g]

  | |

  o |  4 a-2: e -move-> f]

  | |

  o |  3 a-1: d -move-> e]

  |/

  o  2 i-2: c -move-> d]

  |

  o  1 i-1: a -move-> c]

  |

  o  0 i-0 initial commit: a b h]

Note:

| In this case, one of the merge wrongly record a merge while there is none.

| This lead to bad copy tracing information to be dug up.

Merge:

- one with change to an unrelated file (b)

- one overwriting a file (d) with a rename (from h to i to d)

  $ hg up 'desc("i-2")'

  2 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ hg mv h i

  $ hg commit -m "f-1: rename h -> i"

  created new head

  $ hg mv --force i d

  $ hg commit -m "f-2: rename i -> d"

  $ hg debugindex d

     rev linkrev nodeid       p1           p2

       0       2 01c2f5eabdc4 000000000000 000000000000

       1      10 b004912a8510 000000000000 000000000000

       2      15 0bb5445dc4d0 01c2f5eabdc4 b004912a8510

       3      22 c72365ee036f 000000000000 000000000000

  $ hg up 'desc("b-1")'

  3 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg merge 'desc("f-2")'

  1 files updated, 0 files merged, 1 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg ci -m 'mBFm-0 simple merge - one way'

  $ hg up 'desc("f-2")'

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg merge 'desc("b-1")'

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg ci -m 'mFBm-0 simple merge - the other way'

  created new head

  $ hg log -G --rev '::(desc("mBFm")+desc("mFBm"))'

  @    24 mFBm-0 simple merge - the other way]

  |\

  +---o  23 mBFm-0 simple merge - one way]

  | |/

  | o  22 f-2: rename i -> d]

  | |

  | o  21 f-1: rename h -> i]

  | |

  o |  5 b-1: b update]

  |/

  o  2 i-2: c -move-> d]

  |

  o  1 i-1: a -move-> c]

  |

  o  0 i-0 initial commit: a b h]