[SVN-2939] Can't replace branch with neon/serf

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: ---
• Fix Version/s: 1.5.1
• Component/s: libsvn_ra_neon
• Labels: bite-sized
• Assignee: Unassigned
• Reporter: Subversion Importer
• Created: 21/Sep/07 18:10
• Updated: 27/Oct/18 16:35
• Resolved: 18/Jun/09 09:40

Description

I found a bug in ra-{neon,serf} that can't be shown with the client
library, but only when using the ra commit editor to build up a
relatively complex transaction.  See
http://svn.haxx.se/dev/archive-2007-09/0327.shtml and
http://svn.haxx.se/dev/archive-2007-09/0332.shtml for Python and
sh/svnmucc scripts demonstrating the bug.

The problem is basically:

  1. Delete /trunk/dir1/dir2/
  => commit r13
  2. In one transaction:
     a. Copy /trunk@13 to /branch
     b. Create /branch/dir1/dir2
  => commit r14
  3. In one transaction:
     a. Delete /branch
     b. Copy /trunk@13 to /branch
     c. Create /branch/dir1/dir2
  => ERROR: .../branch/dir1/dir2 already exists

Of course, /branch/dir1/dir2 does *not* exist in the transaction I'm
building in step 3! Some or all of Neon, serf, and mod-dav-svn are
looking at branch/dir1/dir2 in the revision root rather than the
transaction root.

There's a bit more to it, and serf is slightly different from neon,
but that's basically it. See the test script for details.  Plop it
into subversion/bindings/swig/python/tests and run it.  Comment out
both REPOS_URL settings to see it run over local.

Original issue reported by epg