view tests/test-diffdir.t @ 24409:30b8db6d0c04

subrepo: add the parent context to hgsubrepo

This brings parity with gitsubrepo and svnsubrepo (which already reference their
parent), and will be used in an upcoming patch.

I'm a bit concerned that the parent context could get stale (consider what
happens when the parent repo is reverted for example).  I tried adding the
parent context to the substate tuple so that the parent is available everywhere
a state change is possible, but that made submerge() unhappy.  Even with
removing the parent context inside submerge(), I wasn't able to get all of the
test diffs fixed.

But since the other subrepos reference their parent too, if there is a problem,
it is a preexisting one (that nobody seems to be running into).  It can be fixed
if/when it pops up.

  $ hg init
  $ touch a
  $ hg add a
  $ hg ci -m "a"

  $ echo 123 > b
  $ hg add b
  $ hg diff --nodates
  diff -r 3903775176ed b
  --- /dev/null
  +++ b/b
  @@ -0,0 +1,1 @@
  +123

  $ hg diff --nodates -r tip
  diff -r 3903775176ed b
  --- /dev/null
  +++ b/b
  @@ -0,0 +1,1 @@
  +123

  $ echo foo > a
  $ hg diff --nodates
  diff -r 3903775176ed a
  --- a/a
  +++ b/a
  @@ -0,0 +1,1 @@
  +foo
  diff -r 3903775176ed b
  --- /dev/null
  +++ b/b
  @@ -0,0 +1,1 @@
  +123

  $ hg diff -r ""
  hg: parse error: empty query
  [255]
  $ hg diff -r tip -r ""
  hg: parse error: empty query
  [255]