Enhancement: Update phpunit/phpunit

[localheinz]

This PR

• updates phpunit/phpunit
• uses an actual version constraint for mockery/mockery
• fixes risky tests by adding to assertion count from Mockery

💁‍♂️ For reference, see sebastianbergmann/phpunit@5.7.27...6.5.13.

[codecov]

Codecov Report

Merging #198 into master will decrease coverage by 4.48%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##             master    #198      +/-   ##
===========================================
- Coverage     76.08%   71.6%   -4.49%     
  Complexity      109     109              
===========================================
  Files            17      17              
  Lines           322     324       +2     
===========================================
- Hits            245     232      -13     
- Misses           77      92      +15

Impacted Files	Coverage Δ	Complexity Δ
src/Renderers/Results/JsonResultsRenderer.php	0% <0%> (-100%)	1% <0%> (ø)
src/Renderers/Results/CsvResultsRenderer.php	0% <0%> (-100%)	3% <0%> (ø)
src/Processes/ChurnProcess.php	87.5% <0%> (-12.5%)	7% <0%> (ø)
src/Results/ResultCollection.php	100% <0%> (ø)	6% <0%> (ø)	⬇️

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[codecov]

Codecov Report

Merging #198 into master will increase coverage by 0.14%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #198      +/-   ##
============================================
+ Coverage     76.08%   76.23%   +0.14%     
  Complexity      109      109              
============================================
  Files            17       17              
  Lines           322      324       +2     
============================================
+ Hits            245      247       +2     
  Misses           77       77

Impacted Files	Coverage Δ	Complexity Δ
src/Results/ResultCollection.php	100% <0%> (ø)	6% <0%> (ø)	⬇️
src/Renderers/Results/JsonResultsRenderer.php	100% <0%> (ø)	1% <0%> (ø)	⬇️

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[bmitch]

My only concern with this is jumping PhpUnit to a new major version. I'm not sure how widely used 5.* is still.

[localheinz]

@bmitch

I wouldn't worry about it, the latest version of phpunit/phpunit is 7.5.2, so we are far behind. Since we are installing phpunit/phpunit with composer, I don't see any issues with what other people use.

[bmitch]

Thank you @localheinz !