tests/test-debugrename.t

bookmark: complexity pull-push test to have deeper tree

This changeset only touch test.

The previous test was correct, it tested that the successors of an old bookmark
position was seen as a valid destination for bookmark.

However, a newer version is made for two reason:

(1) The new test check further. It check that the descendant of the successors
    is a valid destination

(2) An ever more complexe test is needed to validate a future fix to issue 3680
    Splitting complexification of the test and actual bugfix help to reduce the
    noise in the bugfix changeset. Issue 3680 is NOT fixed by this changeset.

  $ hg init
  $ echo a > a
  $ hg ci -Am t
  adding a

  $ hg mv a b
  $ hg ci -Am t1
  $ hg debugrename b
  b renamed from a:b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3

  $ hg mv b a
  $ hg ci -Am t2
  $ hg debugrename a
  a renamed from b:37d9b5d994eab34eda9c16b195ace52c7b129980

  $ hg debugrename --rev 1 b
  b renamed from a:b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3