tests/test-debugrename.t

bundle2.unbundlepart: implement seek()

This implements a seek() method for unbundlepart.  This allows on-disk bundle2
parts to behave enough like files for bundlerepo to handle them.  A future
patch will add support for bundlerepo to read the bundle2 files that are
written when the experimental.strip-bundle2-version config option is used.

  $ 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