[PhingTask] Added some more tests

[siad007]

Related to #1241

[codecov]

Codecov Report

Merging #1263 into master will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1263      +/-   ##
============================================
+ Coverage     50.42%   50.45%   +0.02%     
  Complexity     9516     9516              
============================================
  Files           486      486              
  Lines         23328    23328              
============================================
+ Hits          11763    11769       +6     
+ Misses        11565    11559       -6

Impacted Files	Coverage Δ	Complexity Δ
classes/phing/Project.php	76.23% <0%> (+1.98%)	125% <0%> (ø)	⬇️

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