This test file test the rewind command in several situations.

Global setup

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

  $ . $TESTDIR/testlib/common.sh

  $ cat >> $HGRCPATH <<EOF

  > [ui]

  > interactive = true

  > [phases]

  > publish=False

  > [extensions]

  > evolve =

  > EOF

  $ hg init rewind-testing-base

  $ cd rewind-testing-base

  $ echo a > root

  $ hg add root

  $ hg ci -m 'c_ROOT'

  $ echo a > A

  $ hg add A

  $ hg ci -m 'c_A0'

  $ echo a > B

  $ hg add B

  $ hg ci -m 'c_B0'

  $ hg log -G

  @  changeset:   2:7e594302a05d

  |  tag:         tip

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_B0

  |

  o  changeset:   1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_A0

  |

  o  changeset:   0:eba9c2249fe7

     user:        test

     date:        Thu Jan 01 00:00:00 1970 +0000

     summary:     c_ROOT

  $ cd ..

Test rewinding to single changesets

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

  $ hg clone rewind-testing-base rewind-testing-simple-prune

  updating to branch default

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

  $ cd rewind-testing-simple-prune

Prune changeset unrelated to the working copy

---------------------------------------------

Setup

`````

Update to an unrelated changeset

  $ hg up 'desc("c_ROOT")'

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

Prune the head

  $ hg prune -r 'desc("c_B0")'

  1 changesets pruned

  $ hg log -G

  o  changeset:   1:579f120ba918

  |  tag:         tip

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_A0

  |

  @  changeset:   0:eba9c2249fe7

     user:        test

     date:        Thu Jan 01 00:00:00 1970 +0000

     summary:     c_ROOT

Actual rewind

`````````````

  $ hg rewind --hidden --to 'desc("c_B0")'

  rewinded to 1 changesets

  $ hg debugobsolete

  7e594302a05d3769b27be88fc3cdfd39d7498498 0 {579f120ba91885449adc92eedf48ef3569742cee} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}

  7e594302a05d3769b27be88fc3cdfd39d7498498 073989a581cf430a844192364fa37606357cbbc2 4 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '2', 'operation': 'rewind', 'user': 'test'}

  $ hg obslog -r 'desc("c_B0")'

  o  073989a581cf (3) c_B0

  |

  x  7e594302a05d (2) c_B0

       pruned using prune by test (Thu Jan 01 00:00:00 1970 +0000)

       rewritten(meta) as 073989a581cf using rewind by test (Thu Jan 01 00:00:00 1970 +0000)

  $ hg log -G

  o  changeset:   3:073989a581cf

  |  tag:         tip

  |  parent:      1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_B0

  |

  o  changeset:   1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_A0

  |

  @  changeset:   0:eba9c2249fe7

     user:        test

     date:        Thu Jan 01 00:00:00 1970 +0000

     summary:     c_ROOT

XXX-TODO: fix the obsfate from "meta-changed as 3" to "identical" or something.

  $ hg log -G --hidden

  o  changeset:   3:073989a581cf

  |  tag:         tip

  |  parent:      1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_B0

  |

  | x  changeset:   2:7e594302a05d

  |/   user:        test

  |    date:        Thu Jan 01 00:00:00 1970 +0000

  |    obsolete:    meta-changed using rewind as 3:073989a581cf

  |    summary:     c_B0

  |

  o  changeset:   1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_A0

  |

  @  changeset:   0:eba9c2249fe7

     user:        test

     date:        Thu Jan 01 00:00:00 1970 +0000

     summary:     c_ROOT

Other independant rewind create a different revision

----------------------------------------------------------

setup

`````

note: we use "default-date" to make it a "different rewind"

  $ echo '[devel]' >> $HGRCPATH

  $ echo 'default-date = 1 0' >> $HGRCPATH

Actual rewind

`````````````

  $ hg prune 'desc("c_B0")'

  1 changesets pruned

  $ hg rewind --hidden --to 'min(desc("c_B0"))'

  rewinded to 1 changesets

  $ hg debugobsolete

  7e594302a05d3769b27be88fc3cdfd39d7498498 0 {579f120ba91885449adc92eedf48ef3569742cee} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}

  7e594302a05d3769b27be88fc3cdfd39d7498498 073989a581cf430a844192364fa37606357cbbc2 4 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '2', 'operation': 'rewind', 'user': 'test'}

  073989a581cf430a844192364fa37606357cbbc2 0 {579f120ba91885449adc92eedf48ef3569742cee} (Thu Jan 01 00:00:01 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}

  7e594302a05d3769b27be88fc3cdfd39d7498498 48acf2c0d9c8961859ce9a913671eb2adc9b057b 4 (Thu Jan 01 00:00:01 1970 +0000) {'ef1': '34', 'operation': 'rewind', 'user': 'test'}

  $ hg obslog -r 'desc("c_B0")' --all

  x  073989a581cf (3) c_B0

  |    pruned using prune by test (Thu Jan 01 00:00:01 1970 +0000)

  |

  | o  48acf2c0d9c8 (4) c_B0

  |/

  x  7e594302a05d (2) c_B0

       pruned using prune by test (Thu Jan 01 00:00:00 1970 +0000)

       rewritten(meta) as 073989a581cf using rewind by test (Thu Jan 01 00:00:00 1970 +0000)

       rewritten(meta, date) as 48acf2c0d9c8 using rewind by test (Thu Jan 01 00:00:01 1970 +0000)

  $ hg log -G

  o  changeset:   4:48acf2c0d9c8

  |  tag:         tip

  |  parent:      1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:01 1970 +0000

  |  summary:     c_B0

  |

  o  changeset:   1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_A0

  |

  @  changeset:   0:eba9c2249fe7

     user:        test

     date:        Thu Jan 01 00:00:00 1970 +0000

     summary:     c_ROOT

  $ hg log -G --hidden

  o  changeset:   4:48acf2c0d9c8

  |  tag:         tip

  |  parent:      1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:01 1970 +0000

  |  summary:     c_B0

  |

  | x  changeset:   3:073989a581cf

  |/   parent:      1:579f120ba918

  |    user:        test

  |    date:        Thu Jan 01 00:00:00 1970 +0000

  |    obsolete:    pruned using prune

  |    summary:     c_B0

  |

  | x  changeset:   2:7e594302a05d

  |/   user:        test

  |    date:        Thu Jan 01 00:00:00 1970 +0000

  |    obsolete:    rewritten using rewind as 4:48acf2c0d9c8

  |    obsolete:    meta-changed using rewind as 3:073989a581cf

  |    summary:     c_B0

  |

  o  changeset:   1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_A0

  |

  @  changeset:   0:eba9c2249fe7

     user:        test

     date:        Thu Jan 01 00:00:00 1970 +0000

     summary:     c_ROOT

  $ cd ..

rewind a simple amend - creating content-divergence

---------------------------------------------------

Setup

`````

  $ hg clone rewind-testing-base rewind-testing-single-rewrite

  updating to branch default

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

  $ cd rewind-testing-single-rewrite

  $ echo BB > B

  $ hg amend -m 'c_B1'

  $ hg log -G

  @  changeset:   3:25c8f5ab0c3b

  |  tag:         tip

  |  parent:      1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_B1

  |

  o  changeset:   1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_A0

  |

  o  changeset:   0:eba9c2249fe7

     user:        test

     date:        Thu Jan 01 00:00:00 1970 +0000

     summary:     c_ROOT

Actual rewind

`````````````

  $ hg rewind --hidden --to 'desc("c_B0")' --as-divergence

  2 new content-divergent changesets

  rewinded to 1 changesets

  $ hg debugobsolete

  7e594302a05d3769b27be88fc3cdfd39d7498498 25c8f5ab0c3bb569ec672570f1a901be4c6f032b 0 (Thu Jan 01 00:00:01 1970 +0000) {'ef1': '9', 'operation': 'amend', 'user': 'test'}

  7e594302a05d3769b27be88fc3cdfd39d7498498 48acf2c0d9c8961859ce9a913671eb2adc9b057b 4 (Thu Jan 01 00:00:01 1970 +0000) {'ef1': '34', 'operation': 'rewind', 'user': 'test'}

  $ hg obslog --rev 'desc("c_B0")'

  *  48acf2c0d9c8 (4) c_B0

  |

  x  7e594302a05d (2) c_B0

       rewritten(description, content) as 25c8f5ab0c3b using amend by test (Thu Jan 01 00:00:01 1970 +0000)

       rewritten(meta, date) as 48acf2c0d9c8 using rewind by test (Thu Jan 01 00:00:01 1970 +0000)

  $ hg log -G

  *  changeset:   4:48acf2c0d9c8

  |  tag:         tip

  |  parent:      1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:01 1970 +0000

  |  instability: content-divergent

  |  summary:     c_B0

  |

  | @  changeset:   3:25c8f5ab0c3b

  |/   parent:      1:579f120ba918

  |    user:        test

  |    date:        Thu Jan 01 00:00:00 1970 +0000

  |    instability: content-divergent

  |    summary:     c_B1

  |

  o  changeset:   1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_A0

  |

  o  changeset:   0:eba9c2249fe7

     user:        test

     date:        Thu Jan 01 00:00:00 1970 +0000

     summary:     c_ROOT

  $ hg log -G --hidden

  *  changeset:   4:48acf2c0d9c8

  |  tag:         tip

  |  parent:      1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:01 1970 +0000

  |  instability: content-divergent

  |  summary:     c_B0

  |

  | @  changeset:   3:25c8f5ab0c3b

  |/   parent:      1:579f120ba918

  |    user:        test

  |    date:        Thu Jan 01 00:00:00 1970 +0000

  |    instability: content-divergent

  |    summary:     c_B1

  |

  | x  changeset:   2:7e594302a05d

  |/   user:        test

  |    date:        Thu Jan 01 00:00:00 1970 +0000

  |    obsolete:    rewritten using rewind as 4:48acf2c0d9c8

  |    obsolete:    rewritten using amend as 3:25c8f5ab0c3b

  |    summary:     c_B0

  |

  o  changeset:   1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_A0

  |

  o  changeset:   0:eba9c2249fe7

     user:        test

     date:        Thu Jan 01 00:00:00 1970 +0000

     summary:     c_ROOT

Cleanup

```````

  $ hg prune 'max(desc("c_B0"))'

  1 changesets pruned

  $ hg log -G

  @  changeset:   3:25c8f5ab0c3b

  |  tag:         tip

  |  parent:      1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_B1

  |

  o  changeset:   1:579f120ba918

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     c_A0

  |

  o  changeset:   0:eba9c2249fe7

     user:        test

     date:        Thu Jan 01 00:00:00 1970 +0000

     summary:     c_ROOT

  $ echo 'default-date = 2 0' >> $HGRCPATH

rewind a simple amend - obsoleting the current latest successors

----------------------------------------------------------------

  $ hg rewind --hidden --to 'min(desc("c_B0"))'

  rewinded to 1 changesets

  (1 changesets obsoleted)

  working directory is now at d8b4471cfb3c

  $ hg debugobsolete

  7e594302a05d3769b27be88fc3cdfd39d7498498 25c8f5ab0c3bb569ec672570f1a901be4c6f032b 0 (Thu Jan 01 00:00:01 1970 +0000) {'ef1': '9', 'operation': 'amend', 'user': 'test'}