bzr shelve/unshelve should test the availability of diffstat before running it

[Aaron Bentley]

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Michael Ellerman wrote:
> On Tue, 25 Oct 2005 03:41, Aaron Bentley wrote:
> 
>>Michael Ellerman wrote:
>>
>>>Sweet. Actually if you want to pull my new code into bzrtools every now
>>>and then that'd be fine too, whatever's easiest.
>>
>>I'll be glad to.  Right now, it's not passing the selftest for a variety
>>of reasons, but let me know when it's ready.
> 
> 
> Hmm, works for me?
> 
> concordia ~$ bzr selftest test_shelf
> running tests...
> bzr binary                     /home/michael/src/bzr/mine/bzr

The test it was failing was a blackbox test.  Maybe your internals are
fine, but you're not testing the commandline.

$ bzr shelve -r -1
bzr: ERROR: 'tuple' object has no attribute 'revision_history'
  command: '/home/abentley/bin/bzr' 'shelve' '-r' '-1'
  pwd: /home/abentley/bzrplugins/shelf_v2
  at /home/abentley/bzr.ab/bzrlib/revisionspec.py line 151, in in_history()
  see ~/.bzr.log for debug information

This was caused by the recent signature change of open_containing.

Aaron
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