annotate tests/test-issue-6028.t @ 4843:d6e2820dac1f stable

tests: add some more actions to test-issue-6028, describe what's being done

This patch does two things: it explains what's happening in the test file so
it's easier to understand, and also it adds checks that make sure something
like swapping merge parents is not accidentally breaking anything.

The primary reason to touch this test file was that it was broken by a change
in core's merge.graft() that erroneously swapped merge parents. Since only
evolve uses merge.graft() for merge commits and there aren't any tests in core
for it, let's test it here. Plus, this test case is pretty simple and these
additional checks don't make it too complicated.

This test file test the #6028 issue

evolve fails with mercurial.error.ProgrammingError: unsupported changeid '' of type <type 'str'>

https://bz.mercurial-scm.org/show_bug.cgi?id=6028

Global setup
============

  $ . $TESTDIR/testlib/common.sh
  $ cat >> $HGRCPATH <<EOF
  > [ui]
  > interactive = true
  > [phases]
  > publish=False
  > [extensions]
  > evolve =
  > topic =
  > EOF

Test
====

  $ hg init $TESTTMP/issue-6028
  $ cd $TESTTMP/issue-6028

create initial commit

  $ echo "0" > 0
  $ hg ci -Am 0
  adding 0

start new topics "a" and "b" both from 0

  $ hg up default
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg topics a
  marked working directory as topic: a
  $ echo "a" > a
  $ hg ci -Am a
  adding a
  active topic 'a' grew its first changeset
  (see 'hg help topics' for more information)

  $ hg up default
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg topics b
  marked working directory as topic: b
  $ echo "b" > b
  $ hg ci -Am b
  adding b
  active topic 'b' grew its first changeset
  (see 'hg help topics' for more information)

create branch "integration" from 0, merge topics "a" and "b" into it

  $ hg up default
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg branch integration
  marked working directory as branch integration

  $ hg merge a
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m "merged a"

  $ hg merge b
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m "merged b"

commit a bad file on topic "a", merge it into "integration"

  $ hg up a
  switching to topic a
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo "a bad commit" >> a_bad_commit
  $ hg add a_bad_commit
  $ hg ci -m "a bad commit"
  $ hg up integration
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg merge a
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m "merged a bad commit"

add more commits on both topics and merge them into "integration"

  $ hg up a
  switching to topic a
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo "aa" >> a
  $ hg ci -m "aa"
  $ hg up integration
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg merge a
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m "merged aa"

  $ hg up b
  switching to topic b
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo "bb" >> b
  $ hg ci -m "bb"
  $ hg up integration
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg merge b
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m "merged bb"

create instability by pruning two changesets, one in a topic, one a merge

  $ hg log -r 5:6 -T '{rev}: {desc}\n'
  5: a bad commit
  6: merged a bad commit

  $ hg prune -r 5:6
  2 changesets pruned
  3 new orphan changesets

  $ hg up 4
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved

start the evolve

  $ hg evolve --update --no-all
  move:[8] merged aa
  atop:[4] merged b
  working directory is now at c920dd828523

casually checking issue6141: position of p2 is not changed

  $ hg log -r 'predecessors(.) + .'
  changeset:   8:3f6f25057afb
  branch:      integration
  parent:      6:cfc4c333724f
  parent:      7:61eff7f7bb6c
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  obsolete:    rebased using evolve as 11:c920dd828523
  summary:     merged aa
  
  changeset:   11:c920dd828523
  branch:      integration
  tag:         tip
  parent:      4:e33aee2c715e
  parent:      7:61eff7f7bb6c
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  instability: orphan
  summary:     merged aa
  

test that we successfully got rid of the bad file

  $ hg d --git -r 'predecessors(.)' -r '.'
  diff --git a/a_bad_commit b/a_bad_commit
  deleted file mode 100644
  --- a/a_bad_commit
  +++ /dev/null
  @@ -1,1 +0,0 @@
  -a bad commit

evolve creates an obsolete changeset above as 11

  $ hg evolve -r .
  cannot solve instability of c920dd828523, skipping
  cannot solve instability of c920dd828523, skipping