438 

   439 Sub-case: fallback for corrupted data file

   440 ------------------------------------------

   441 

   442 Sabotaging the data file so that nodemap resolutions fail, triggering fallback to

   443 (non-persistent) C implementation.

   444 

   445 

   446   $ UUID=`hg debugnodemap --metadata| grep 'uid:' | \

   447   > sed 's/uid: //'`

   448   $ FILE=.hg/store/00changelog-"${UUID}".nd

   449   $ python -c "fobj = open('$FILE', 'r+b'); fobj.write(b'\xff' * 121088); fobj.close()"

   450 

   451 The nodemap data file is still considered in sync with the docket. This

   452 would fail without the fallback to the (non-persistent) C implementation:

   453 

   454   $ hg log -r b355ef8adce0949b8bdf6afc72ca853740d65944 -T '{rev}\n' --traceback

   455   5002

   456 

   457 The nodemap data file hasn't been fixed, more tests can be inserted:

   458 

   459   $ hg debugnodemap --dump-disk | f --bytes=256 --hexdump --size

   460   size=121088

   461   0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   462   0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   463   0020: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   464   0030: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   465   0040: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   466   0050: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   467   0060: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   468   0070: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   469   0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   470   0090: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   471   00a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   472   00b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   473   00c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   474   00d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   475   00e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   476   00f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

   477