Added AssertUnique and AssertNotUnique

[MarvinJWendt]

No description provided.

[codecov]

Codecov Report

Merging #158 (9b23311) into main (9b3ca14) will increase coverage by 0.35%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #158      +/-   ##
==========================================
+ Coverage   86.43%   86.78%   +0.35%     
==========================================
  Files          11       11              
  Lines         678      696      +18     
==========================================
+ Hits          586      604      +18     
  Misses         56       56              
  Partials       36       36              

Impacted Files	Coverage Δ
assert.go	96.33% <100.00%> (+0.11%)	⬆️
fuzz-utils.go	83.33% <100.00%> (+6.06%)	⬆️

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