Fix CPU tests

[tkf]

No description provided.

[codecov]

Codecov Report

Merging #54 (d5983ee) into union (e859777) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##            union      #54   +/-   ##
=======================================
  Coverage   54.07%   54.07%           
=======================================
  Files           2        2           
  Lines         135      135           
=======================================
  Hits           73       73           
  Misses         62       62           

Flag	Coverage Δ
unittests	0.00% <ø> (ø)

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