test_pos_map/reset_nonempty no longer triggers an assertion

[anarthal]

close #403

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.95%. Comparing base (1c67537) to head (e0edbdb).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #404   +/-   ##
========================================
  Coverage    98.95%   98.95%           
========================================
  Files          142      142           
  Lines         7199     7199           
========================================
  Hits          7124     7124           
  Misses          75       75           

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