Improved tests

[nibix]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 96.15385% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...ctivem/collections/ImmutableCompactSubSetImpl.java	94.73%	1 Missing ⚠️

Files with missing lines	Coverage Δ	Complexity Δ
...java/com/selectivem/collections/GenericArrays.java	96.96% <100.00%> (+39.39%)	16.00 <2.00> (+5.00)
...om/selectivem/collections/UnmodifiableSetImpl.java	100.00% <100.00%> (ø)	10.00 <3.00> (ø)
...a/com/selectivem/collections/BitBackedSetImpl.java	94.73% <ø> (+5.56%)	16.00 <0.00> (ø)
...ctivem/collections/ImmutableCompactSubSetImpl.java	92.00% <94.73%> (+25.33%)	4.00 <0.00> (ø)