Add a couple of tests for element defragmentation, to
see that the function works correctly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230827135854.e2a5cead1816.I09f0edc19d162b54ee330991c728c1e9aa42ebf6@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>