Increase test coverage

[jsirish]

No description provided.

[codecov]

Codecov Report

Merging #19 into master will increase coverage by 11.82%.
The diff coverage is 100%.

@@              Coverage Diff              @@
##             master      #19       +/-   ##
=============================================
+ Coverage     65.02%   76.84%   +11.82%     
  Complexity       62       62               
=============================================
  Files            11       11               
  Lines           203      203               
=============================================
+ Hits            132      156       +24     
+ Misses           71       47       -24

Impacted Files	Coverage Δ	Complexity Δ
src/Elements/ElementFeatures.php	100% <100%> (+22.22%)	5 <0> (ø)	⬇️
src/Elements/ElementSlideshow.php	100% <100%> (+100%)	2 <0> (ø)	⬇️
src/Elements/ElementPromos.php	33.33% <100%> (+7.84%)	16 <0> (ø)	⬇️
src/Elements/ElementBlogPosts.php	71.42% <0%> (+71.42%)	4% <0%> (ø)	⬇️
src/Elements/ElementChildPages.php	100% <0%> (+100%)	1% <0%> (ø)	⬇️

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