view tests/test-debugindexdot.t @ 38941:c0b6a7c78a21

index: split up nt_init() in two

I'd like to make nt_init() take a pointer to a nodetree to initialize,
but it currently also allocates the nodetree. This patch prepares for
that change by making nt_init() be about initializing an existing node
tree and by creating a new index_init_nt() that creates the nodetree.

Differential Revision: https://phab.mercurial-scm.org/D4114

Just exercise debugindexdot
Create a short file history including a merge.
  $ hg init t
  $ cd t
  $ echo a > a
  $ hg ci -qAm t1 -d '0 0'
  $ echo a >> a
  $ hg ci -m t2 -d '1 0'
  $ hg up -qC 0
  $ echo b >> a
  $ hg ci -m t3 -d '2 0'
  created new head
  $ HGMERGE=true hg merge -q
  $ hg ci -m merge -d '3 0'

  $ hg debugindexdot a
  digraph G {
  	-1 -> 0
  	0 -> 1
  	0 -> 2
  	2 -> 3
  	1 -> 3
  }

  $ cd ..