view tests/test-diff-issue2761.t @ 38975:87b737b78bd0

changegroup: pass function to resolve delta parents into constructor

Previously, _deltaparent() encapsulated the logic for all 3
delta parent modes of operation. The choice of delta parent
is static for the lifetime of the packer and can be passed into
the packer as a callable. So do that.

Differential Revision: https://phab.mercurial-scm.org/D4132

Test issue2761

  $ hg init

  $ touch to-be-deleted
  $ hg add
  adding to-be-deleted
  $ hg ci -m first
  $ echo a > to-be-deleted
  $ hg ci -m second
  $ rm to-be-deleted
  $ hg diff -r 0

Same issue, different code path

  $ hg up -C
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ touch does-not-exist-in-1
  $ hg add
  adding does-not-exist-in-1
  $ hg ci -m third
  $ rm does-not-exist-in-1
  $ hg diff -r 1