tests: collect all branch creation in one place in test-copies-chain-merge.t

I found this test case really hard to read because it requires
scrolling back and forth between the setup and the verification. The
next patch will move the verification close to the merge commits they
test. This patch prepares for that by moving all branch creation first
so they are separate from the merge commits (because many merge
commits reuse the same branches).

Differential Revision: https://phab.mercurial-scm.org/D8376

tests/test-copies-chain-merge.t

@@ -75,13 +75,72 b' Have a branching with nothing on one sid'
   o  0 i-0 initial commit: a b h
   
 
+Create a branch that delete a file previous renamed
+
+  $ hg up 'desc("i-2")'
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg rm d
+  $ hg ci -m 'c-1 delete d'
+  created new head
+  $ hg log -G --rev '::.'
+  @  6 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
+  
+
+Create a branch that delete a file previous renamed and recreate it
+
+  $ hg up 'desc("i-2")'
+  1 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 '::.'
+  @  8 d-2 re-add d
+  |
+  o  7 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
+  
+
+Having another branch renaming a different file to the same filename as another
+
+  $ hg up 'desc("i-2")'
+  1 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 '::.'
+  @  10 e-2 g -move-> f
+  |
+  o  9 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 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
+  1 files updated, 0 files merged, 1 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)
@@ -94,9 +153,9 b' Merge the two branches we just defined ('
   $ 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
+  @    12 mABm-0 simple merge - the other way
   |\
-  +---o  6 mBAm-0 simple merge - one way
+  +---o  11 mBAm-0 simple merge - one way
   | |/
   | o  5 b-1: b update
   | |
@@ -111,30 +170,13 b' Merge the two branches we just defined ('
   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
+  1 files updated, 0 files merged, 1 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)
@@ -153,15 +195,15 b' and recreate an unrelated file after the'
   $ 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
+  @  16 mCBm-1 re-add d
   |
-  o    11 mCBm-0 simple merge - the other way
+  o    15 mCBm-0 simple merge - the other way
   |\
-  | | o  10 mBCm-1 re-add d
+  | | o  14 mBCm-1 re-add d
   | | |
-  +---o  9 mBCm-0 simple merge - one way
+  +---o  13 mBCm-0 simple merge - one way
   | |/
-  | o  8 c-1 delete d
+  | o  6 c-1 delete d
   | |
   o |  5 b-1: b update
   |/
@@ -172,28 +214,6 b' and recreate an unrelated file after the'
   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
@@ -206,7 +226,7 b' Note:'
 | The current code arbitrarily pick one side
 
   $ hg up 'desc("b-1")'
-  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  1 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)
@@ -219,13 +239,13 b' Note:'
   $ 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
+  @    18 mDBm-0 simple merge - the other way
   |\
-  +---o  15 mBDm-0 simple merge - one way
+  +---o  17 mBDm-0 simple merge - one way
   | |/
-  | o  14 d-2 re-add d
+  | o  8 d-2 re-add d
   | |
-  | o  13 d-1 delete d
+  | o  7 d-1 delete d
   | |
   o |  5 b-1: b update
   |/
@@ -236,27 +256,6 b' Note:'
   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)
@@ -279,9 +278,9 b' Merge:'
   |\
   +---o  19 mAEm-0 simple merge - one way
   | |/
-  | o  18 e-2 g -move-> f
+  | o  10 e-2 g -move-> f
   | |
-  | o  17 e-1 b -move-> g
+  | o  9 e-1 b -move-> g
   | |
   o |  4 a-2: e -move-> f
   | |
@@ -313,8 +312,8 b' Merge:'
   $ hg debugindex d
      rev linkrev nodeid       p1           p2
        0       2 01c2f5eabdc4 000000000000 000000000000
-       1      10 b004912a8510 000000000000 000000000000
-       2      15 0bb5445dc4d0 01c2f5eabdc4 b004912a8510
+       1       8 b004912a8510 000000000000 000000000000
+       2      17 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
@@ -378,9 +377,9 b' Merge:'
   | |/
   | o  25 g-1: update d
   | |
-  o |  14 d-2 re-add d
+  o |  8 d-2 re-add d
   | |
-  o |  13 d-1 delete d
+  o |  7 d-1 delete d
   |/
   o  2 i-2: c -move-> d
   |
@@ -576,8 +575,8 b' not a merge.'
   $ hg debugindex d
      rev linkrev nodeid       p1           p2
        0       2 01c2f5eabdc4 000000000000 000000000000
-       1      10 b004912a8510 000000000000 000000000000
-       2      15 0bb5445dc4d0 01c2f5eabdc4 b004912a8510
+       1       8 b004912a8510 000000000000 000000000000
+       2      17 0bb5445dc4d0 01c2f5eabdc4 b004912a8510
        3      22 c72365ee036f 000000000000 000000000000
        4      23 863d9bc49190 01c2f5eabdc4 c72365ee036f
        5      25 7bded9d9da1f 01c2f5eabdc4 000000000000
@@ -588,9 +587,9 b' not a merge.'
 (This `hg log` output if wrong, since no merge actually happened).
 
   $ hg log -Gfr 'desc("mBDm-0")' d
-  o    15 mBDm-0 simple merge - one way
+  o    17 mBDm-0 simple merge - one way
   |\
-  o :  14 d-2 re-add d
+  o :  8 d-2 re-add d
   :/
   o  2 i-2: c -move-> d
   |
@@ -602,7 +601,7 b' not a merge.'
 This `hg log` output is correct
 
   $ hg log -Gfr 'desc("mDBm-0")' d
-  o  14 d-2 re-add d
+  o  8 d-2 re-add d
   |
   ~
 
@@ -633,7 +632,7 b' Comparing with a merge with colliding re'
   $ hg debugindex f
      rev linkrev nodeid       p1           p2
        0       4 0dd616bc7ab1 000000000000 000000000000
-       1      18 6da5a2eecb9c 000000000000 000000000000
+       1      10 6da5a2eecb9c 000000000000 000000000000
        2      19 eb806e34ef6b 0dd616bc7ab1 6da5a2eecb9c
   $ hg status --copies --rev 'desc("a-2")' --rev 'desc("mAEm-0")'
   M f
@@ -770,7 +769,7 b' consider history and rename on both bran'
   |\
   | o  25 g-1: update d
   | |
-  o |  14 d-2 re-add d
+  o |  8 d-2 re-add d
   |/
   o  2 i-2: c -move-> d
   |
@@ -785,7 +784,7 b' consider history and rename on both bran'
   |\
   | o  25 g-1: update d
   | |
-  o |  14 d-2 re-add d
+  o |  8 d-2 re-add d
   |/
   o  2 i-2: c -move-> d
   |