Added more tests (increase coverage)

[jorgecarleitao]

Also implemented TrustedLen for iter.cloned() when iter is trusted len.

[codecov]

Codecov Report

Merging #1027 (406a7b8) into main (266fbbe) will increase coverage by 0.41%.
The diff coverage is 88.57%.

@@            Coverage Diff             @@
##             main    #1027      +/-   ##
==========================================
+ Coverage   71.62%   72.04%   +0.41%     
==========================================
  Files         359      359              
  Lines       19907    19926      +19     
==========================================
+ Hits        14259    14355      +96     
+ Misses       5648     5571      -77     

Impacted Files	Coverage Δ
src/array/binary/mutable.rs	85.45% <ø> (+1.40%)	⬆️
src/ffi/array.rs	86.62% <ø> (+2.54%)	⬆️
src/bitmap/mutable.rs	92.30% <87.87%> (+2.05%)	⬆️
src/array/fixed_size_binary/mod.rs	90.29% <100.00%> (+1.94%)	⬆️
src/ffi/schema.rs	75.16% <100.00%> (+6.87%)	⬆️
src/array/list/mod.rs	70.79% <0.00%> (+0.88%)	⬆️
src/array/mod.rs	68.08% <0.00%> (+1.06%)	⬆️
src/bitmap/utils/slice_iterator.rs	87.93% <0.00%> (+1.72%)	⬆️
... and 10 more

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