test uuid value on postgresql

[alileza]

[codecov[bot]]

Codecov Report

Merging #107 into master will not change coverage by %. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #107   +/-   ##
=======================================
  Coverage   36.10%   36.10%           
=======================================
  Files          10       10           
  Lines         554      554           
=======================================
  Hits          200      200           
  Misses        333      333           
  Partials       21       21           

Flag	Coverage Δ
#tomatotests	?
#unittests	36.10% <ø> (ø)

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