Improve fixtures

[Baptouuuu]

Fix #21

Unlike described in the issue, this PR doesn't add an equality check as the generation of non encoded values is done on purpose and the parsing encode these values (so the equality fails as it's a strict comparison).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.65%. Comparing base (ca50712) to head (562aada).

Additional details and impacted files

@@              Coverage Diff              @@
##             develop      #25      +/-   ##
=============================================
+ Coverage      98.24%   98.65%   +0.40%     
- Complexity       520      522       +2     
=============================================
  Files             33       33              
  Lines           1765     1779      +14     
=============================================
+ Hits            1734     1755      +21     
+ Misses            31       24       -7     

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